1985 Toyota Corolla GT-S, the infamous Hachi Roku. RB25DE used cylinder block similar to RB20, but with cylinder diameter enlarged to 86 mm. Later, since 2001, 45V4 turbocharger with steel impeller was installed. DE can be had for $300/$400. Does anyone have the gear ratios for the RB25DET box (R33 if there is any difference?). What if you want to go all in and squeeze the RB25DET engine to 400hp and beyond? Similar to many legendary engines from the 90-s, RB series are highly reliable and durable. We also do not accept returns for hazardous materials, flammable liquids, or gases. Gear ratios are carefully calculated for each vehicle application for the sole intention to maximize your engine's potential. Also that version was equipped with variable valve timing system NVCS on the intake side, fuel injector 370 cc/min, and oil jets were installed in cylinder block. Here is what I was going to do (I already got a quote for insurance and will activate it once the car is bought): Of course how you drive, the clutch you have, and even the fluid you use can have an effect on that. We did this so we can prevent cracks and crevices to the RB25DET cylinder block. 2. what are the differences and what does the swap involve? So I think you need to just call Services NSW and ask them, or look at their website. This engine is released mainly for emission purposes as it is a complaint to higher ecological standards, which enabled the R34 to pass as a Low Emissions Vehicle with its less harmful emission output and better fuel consumption. To make it happen, you have to first upgrade the internal engine parts so that you can have bigger valves and ported cylinder heads. Is the car modified or defected (or defected in another state)? We have used RB25DET boxes up to 620 bhp with no problems, so they are way tough. Perhaps one of the best aspects of these setups is the strong RB25DET transmission. Of course, some insignificant problems may still happen. Thats my experiences for an RB25det with the RB25 Tranny.. Installing a turbo kit on an RB25DE engine is a total waste of time and money. Other modifications also include: The main mechanical difference between the S1 and S2 is their camshafts. We know that high-power engines demand more oil due to their high-speed nature. Step 1 - Get an unregistered vehicle permit from Services NSW As the topic implies, can i get some rough idea what to completely modify for a stock rb25det in order to get around 400hp? Heavy Duty Shifter Return Springs - suit ALL Nissan 5 Speed Transmission's. Step 3 - Take your modified car to a blue slip workshop. If the car is going to be a DD then I wouldn't go with the 4.11's or so. Do paperwork. RB25DE NEO power increased to 200 HP at 6,400, torque 231 NM at 4,800 RPM. Those are very optimistic figures mate. 12-03-2010, 11:00 #1 200sxct Guest Join Date Feb 2004 Location Warrington Posts 611 Rides 0 Difference between a R33 RB25DE and RB25DET gearbox? Step 1 - Get an unregistered vehicle permit from Services NSW Add a compatible lightweight flywheel and clutch to the RB25DET engine. Not vainly they are the most popular engines in the world. If youre drag racing or drifting with an RB25DET engine for a long period, its common to find excess oil leakage in the cylinder head and catch can. By Hi all, I'm going to be buying a car soon (never bought one unregoed, it's in nsw but is regoed in another state) so was looking for some advice on the process. R34 5 speed box's will be the same aswell. Add a compatible lightweight flywheel and clutch to the RB25DET engine. Also RB25 have high fuel consumption and problems with electronics. But again, I suspect that there is more arse pain to be had here. The 71 transmission is Nissan's most common transmission. The trick is to force as much air and fuel as possible into the RB25DET engine so that you can maximize horsepower. and that's on a very conservative fuelling n ignition maps, main objective to prolong engine life, power comes second. Here is what I was going to do (I already got a quote for insurance and will activate it once the car is bought): Paste as plain text instead, 400whp should be the real target hehe. For that reason, the RB25DE is a naturally aspirated engine with 182 to 200 hp. 323i. By To elaborate, NEOs are innovative as they changed the various aspects of the RB25DET machine from the earlier models; one of them is the use of solid lifters. If you push the stock ceramic turbo beyond 0.9 bar boost or 13psi, you could have a premature turbo failure. Also stroker kit may be used, then displacement will reach 2.8-2.9L. This will make it easier to install. R32/RB20DET are different they are the same as SR20 and CA18 boxes. MPT-180 / MPT-180-23. Leaking Front Shock Absorber R33 GTR - What to buy. We cover everything you need to know about Nissans RB25DET six-cylinder engine. All these performance mods are too expensive, complicated and irrational. Despite being made solely for ecological and emission compliance to meet the LEV emission criteria, the NEO version did not disappoint and delivered the special order. you might want to email NightXCZ77 for that info. It's easy! Overall, RB25 engines are highly reliable and can last a lifetime with proper maintenance, not compromising engine oil quality and gasoline. Nissan SR20DET: Everything You Need To Know. It's been a few years, but from memory a VL box looks to be smaller than a RB20DET gearbox which is way smaller than a RB25DET box. elongate top bellhousing bolts inward about 6mm each. The RB25DET/R33, Z32, R32GTR and R33 GTR Gearbox internals are identical. Currently you have JavaScript disabled. But in 1993, the first-ever series (S1) RB25DET appeared in the 1993 Nissan Skyline R33 GTST, which featured Nissans NVCS VVT (Variable Valve Timing) system on the intake cam that gave this engine more power and torque at lower-end RPM range than its previous model. 6. Nothing beats a personal car based on your own preferences. But, RB25DET reign and one of the best aspects of it is having a strong transmission. Upload or insert images from URL. If so, then your plan is basically ccorrect. Yes? Introduce Yourself Here, Difference between Rb25de neo and RB25det neo Piston rings. But yes with the rb25 tranny you will get stupid hi speeds if you could actually get the car to go that fast. You get that kind of power & maybe more with just EBC, ECU and Exhaust. 33 boxes are stronger aswell, but there are a couple of mods neded to fit it. I don't think they will de register it, they bought it sometime ago and I assume with QLD rego. Is the car modified or defected (or defected in another state)? Then be surprised at the transformation that has taken place after install/setup and kick yourself for not doing it earlier lol. Yes? Choose one column. Re-paint the engine bay for a nice, clean, and smooth finish. Your stock turbocharger will not promote much power, therefore you need HKS GT2835 turbocharger. Also buy fuel injectors 550 cc/min, fuel pressure regulator, Splitfire ignition coils and 3-layer radiator. If you want, you can update the gauges on the dashboard since you will be adding a more powerful engine. The latter is not an extraordinary problem. Don't the skylines come with 4.11 stock? Some key changes in S2 were highlighted through the electrical system department, where ignition coils that featured built-in ignitors were introduced. This sounds like a major concern. Thanks. RB25, RB26, RB30, VQ35HR, VQ37HR, VR38 RWD. If you have lost a 3rd gear in an RB25, RB26, or 300ZX transmission then you know you will need something more sturdy to make it survive. Give MCA or Shockworks a call, explain how you use your car and what your budget is. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In this case, you should just change the coils, and in general, change them every 60,000 miles of mileage (100,000 km). as the angle is oposite. After youve tuned the engine with all the necessary parts, cover the front end with shields. Raw Brokerage houses the largest selection of RB25 parts for sale in the United States offering a full service outlet for everything from oem replacement to parts for 1,500hp+built engines. Step 4 - Restore the car to stock or near stock. RB25DET NEO engines use 45V3 turbocharger with enlarged exhaust housing and plastic impeller, boost pressure is 10 psi (0.7 bar). New To The Forum? The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. RB25s are also subjected to some electronic problems and high fuel consumption. Would also like to know if it is any stronger than the MX7? RB26 with RB25DET gearbox - what R200 diff ratio, http://www.geocities.com/z_design_studio/transmission.html. Step 6 - All done now, and will do a service For 400whp then it's safe to get the Tomei Stroker parts for the RB25. It doesn't have anything to do with the seller. This is an MX7, notice how the MX7 (VL Turbo Box) has less webbing on the bellhousing. . Powered by Invision Community. Thats what i paid and gain. Powered by - Designed with theHueman theme, Normal engine operating temperature, C (F), Nissan RB25DET engine reliability, problems and repair, It is quite popular representative of RB series. Other than that. You cannot paste images directly. Just by looking at those cars, it can give you speed vibes. We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. Also such engines do not have hydraulic lifters. There is no need to adjust the valves on RB25DE/DET engines, since they use hydraulic lifters. 2. To start a return, you can contact us at admin@speedtekautoracing.com. It will make compression ratio 8.7 and increase displacement to 2.6L. You cant miss this engine as it can be found in various configurations and referred to as one of the best engines to work on by enthusiasts. Sometimes ignition coils fail, what causes complaints of misfire. The intake manifold was also revised by reducing the runner diameter from 50 mm to 45 mm. Once the work was done, i wen't for a drive and found that each gear was crunching, and that i no longer had a 4th gear, it feels like it's nearly going in but it just wont click in just that little bit further and then it'll pop out of gear. It almost looks like I have to go 4.375 or 4.1 at lowest. 1. The RB25 engine has a solid reputation due to its durability and reliability. fj20 tight ass secondhand box replacement. February 6, 2011 in Drivetrain and transmission. Display as a link instead, Single-speed, three-shaft power take-off with wide selection of ratios and modular output options capable of supporting up to 650 HP and 3,500 rpm input speeds.*. I think you will struggle to deregister it in the other state, so I suspect that you are saying that you will be buying it unregistered because the owner will be deregistering it before selling it to you. Step 2 - Drive the car from the seller to my house and keep it stored Not vainly they are the most popular engines in the world. At the same note, it does not deprive us of power as it produces high power even coming straight from the factory and the best of all is you can tune it depending on your liking. We discussed the specifications above. It is badged as the RB25DE engine, a non-VCT, non-turbocharged model that can produce 190 HP at 6,000 RPM. fs5r30a pull clutch. 5. The stronger 71B replaced the original 71A . Do paperwork. It is expensive, takes long time and has no sense. The world's best and quietest 6 Speed straight cut sequential gearbox - a sequential dogbox transmission that's at home on the Track or the Street, Reliable and strong. With these performance parts you will gain about 300 WHP. R34 GTT Skyline (RB25DET) Z32 300ZX Fairlady (VG30DE, VG30DETT) If you have an S15 with the 6-speed gearbox then: No flywheel spacer is used *No* bellhousing machining is required If you have an S13 or S14 then: No flywheel spacer is used Its impact on the automotive industry and community is overwhelming. It is much easier, more reliable, quicker and cheaper to purchase RB25DET, and you will gain much power at once. So I think you need to just call Services NSW and ask them, or look at their website. The Fora platform includes forum software by XenForo. For a better experience, please enable JavaScript in your browser before proceeding. I have an MX7 box but am thinking about purchasing an RB25 box as I've heard it may be better suited to my 4.11 diff. 9. Step 4 - Get a pink slip (or don't need this as I'm getting a blue slip?) Make sure there is enough ground clearance. All these performance mods increased the power to 280 HP at 6,400 RPM, and torque 334 NM at 3,200 RPM. Also, buy a fuel pressure regulator, 550 cc/min fuel injectors, spitfire ignition coils, and a 3-layer radiator. I hope so, yeah that seems like a huge issue. Anyway, RB25s are the engine choice of most gear-heads, but the final models were ruled out following the release of its successor in 2002, the VQ25DET. Here is an interesting breakdown of an RB25DET engine with 550hp. You need to be a member in order to leave a comment. BMW 325e Sedan (US) Differentials There were many differentials used on the E30 models. New To The Forum? Strength wise they are the same. I want to change my gear ratio to the 4.08 gears as I am keeping the motor N/A. Refunds Also it was equipped with crankshaft with piston stroke 71.7 mm, new connecting rods and pistons. I reckon if you can afford to mod ur RB25 (ER34) at a budget range of 40-50k then my advice is to sell ur car and buy the 34GTR. 71-Series Transmission. I'm damn sure that one of their business items is to tell people how to do this. Step 3 - Get green slip online (blue slip should already be provided by seller) The box in that photo is an RB25DET box above. Get laughed at. I also just heard that apparently compliance for imports isn't universal for all states? Items sent back to us without first requesting a return will not be accepted. Stock fuel injectors are 340 cc/min. The only problem is the aftermarket parts for RB25DET NEO are very hard to find since they were available in the market for a short period. 5. Step 6 - Head to SERVICES NSW. And yes, it's near stock, so i take it the swap wouldn't really make a difference power wise? Wishing to gain 350+ WHP, we should upgrade the previous variant. If approved, youll be automatically refunded on your original payment method. Details OS Giken Close Ratio Gear Kits are developed for those seeking improved drive train reliability and faster lap times. Compression Ratio_8.5:1 (1) Compression Ratio_9.0:1 (3) . ? Sign up for a new account in our community. You can find RB25DET engines in both R33 and R34 Nissan Skyline GTS-T models. It also came with larger injectors, improved pistons, reinforced connecting rods, and a bigger 45V1 turbocharger. This engine is compliant with high ecological standards and it is equipped with new intake manifold with thin runners. Later, in 1993 (when Skyline R33 appeared), NVCS system was used on intake camshaft. It is quite popular representative of RB series. But, after its 15-year hiatus, Nissan continued its production in 2019, putting a smile on our faces as we witness yet another episode of RB greatness. MPT-518A. anyone had tested it before? RB25 gear ratios 1st 3.214 - 39.1 mph 2nd 1.925 - 65.2 mph 3rd 1.302 - 96.4 mph 4th 1.000 - 125.6 mph 5th 0.752 - 167 mph SR20 Gear Ratios 1st: 3.321 - 37.8 mph 2nd: 1.902 - 66 mph 3rd: 1.308 - 96 mph 4th: 1.000 - 125.6 mph 5th: 0.759 - 165.4 mph I'm on the look out for a slightly lower set as I do want a bit more acceleration, however the car is still really quick and fun to drive even though it is geared a bit tall. Hi all, I'm going to be buying a car soon (never bought one unregoed, it's in nsw but is regoed in another state) so was looking for some advice on the process. The OS Giken OS-88 gearbox is a sequential 6-speed gearbox Buy direct from Japan, 100% genuine parts shipped worldwide. Step 4 - Get a pink slip (or don't need this as I'm getting a blue slip?) On top of that, you need to think about upgrading your turbo, fuel pump, oil cooler, and oil pump. It doesn't have anything to do with the seller. Click here for instructions on how to enable JavaScript in your browser. With 90mm shaft centres, this compact unit has been proven at over 1,200 whp. Yeah I definatly agree with you the speed you can get out of a RB + R200 is pretty amusing. Post vids. It appeared in 1991 and replaced RB20DET. 3. would i lose any power due to the different ratio's etc. Oil surges might also contribute to some issues, as high-speed cornering can lead to a bearing failure. Is there anything I missed or got wrong? CS = Counter Shaft Gear Count. If youre going to swap your KA engine with an RB25DET engine, there are a few things that youre going to need. Introduce Yourself Here, front and back ratios question/brain fart. Along with that we are getting a billet 6061 center plate, an overhaul kit, and early shift sleeve. Return to the blue slip workshop and get it signed off. The turbocharger was larger than 16V of RB20DET. Would like to get your feedback to build a s15 gearbox that can withstand 500hp and 550 Nm (tq) . You should immediately forget of naturally aspirated tuning RB25DE or installing turbo kit on RB25DE. What is the actual bhp of stock RB25det? Apexi PFC. Not to mention, RB25DET engines are durable and reliable with no major mechanical issues and if you tune it to its full potential, you can achieve up to 500hp. Still though I can drop down to 3rd and mat it and it goes like hell. The rated limit of the stock turbocharger pressure is between 11.5 13 psi. What kind of top speeds can I get out of it ? RB25DET 1st: 3.214 2nd: 1.925 3rd: 1.302 4th: 1.000 5th: 0.752 Reverse: 3.369 Final: 4.363 VG30DETT 1st: 3.210 2nd: 1.930 3rd: 1.300 4th: 1.000 5th: 0.750 Final drive: 4.080 (NA Model) Final Drive: 3.692 (TT Model) #1 James_H, Mar 24, 2010 Last edited: Mar 25, 2010 lsd32 Member Joined: Mar 31, 2008 Posts: 629 Likes Received: 0 Sign up for a new account in our community. However, they are still minor issues that might arise despite its excellent design. Yes that is the confuser, in that the GTR is 4.11, but their gearbox ratios are different. You will also need a GT-R N1 oil pump, oil cooler, aftermarket ECU, Walbro 255 lph fuel pump. Turbocharger like this lets driving quarter mile per high 11 seconds. Comparing RB25DET and 1JZ-GTE, one might say that 1JZ is somewhat better, and in general, Toyota engine is somewhat more reliable and it fits for performance tuning more. March 17, 2003 in Drivetrain and transmission. 1st 2.60 2.60 2.44 2.44 2.16. Step 6 - Head to SERVICES NSW. Nissans RB25DET engine burst onto the scene in 1993 when it was used in the R33 Nissan Skyline GTST. For starters, after youve removed the KA engine, you can stitch weld every seam in the engine bay. I do want to have a good standing qtr time though so will have to be in the middle somewhere maybe the 3.9. This engine earned one of the highest figures of all the RB25DET engines, producing 280 HP at 6,400 RPM and 267 lb-ft of torque at 3,200 RPM in stock form. This wont be so bad for those with the stock R33 crossmember, since the shifter sits to far foward anyway. The problem with BMW boxes are (at least the 5 speed) that the ratios is way off. I ran some calcs tonite on the current diff which is in the Z - 3.7 and came up with ludicrous speeds ie 351km in 5th gear @ 8000rpm - even with wind resistance and pulling lower revs still a little high dont you think?!! If so, then your plan is basically ccorrect. RB25DET compatible transmissions Postby roadrunr Tue May 01, 2007 5:57 pm I seem to remember someone saying that other Nissan transmissions will bolt up to a RB25DET, but I can't find the posts now, besides what could you use to search for? (GPS calibrated Autometer Speedo) While it definatly hurts performance, the car is a dream to drive on the highway as it is pulling about 2200 RPM at 120km/h or about 70-75 mph. There is almost certainly some pain in the arse here though. I have a 2006 G35(true full bolt ons and then some) with manual transmission and factory VLSD. It is a compressed mixture based on chrysotile asbestos fibers, synthetic rubber or natural rubber, sulfur and other modifying additives. Particularly as you can't select 4th at all. Leaking Front Shock Absorber R33 GTR - What to buy. my car boost 0.8bar also all 6 pistons shit themselves already. Differences being its a stronger box, but seeing as you have an NA is it running bullshit amounts of power to make the swap worth doing? You need to replace the coils and have a scheduled 60,000-mile replacement to ease problems like this in this issue. The engines power was 245-250 HP at 6,400 RPM, torque 272 m at 4,800 RPM. Please remember it can take some time for your bank or credit card company to process and post the refund too. Still though I can drop down to 3rd and mat it and it goes like hell. But, what is the difference between the NEOs and non-NEOs? Stock fuel injectors are 340 cc/min. . I have a few questions. Upgrade it now, or upgrade it later if you run the car hard. However, you can avoid that by swapping it with an aftermarket turbo kit that can handle more boost. Step 2 - Drive the car from the seller to my house and keep it stored Step 1 - Get an unregistered vehicle permit from Services NSW In this case you need GT3540 turbocharger, and also camshafts 256/256, valve springs and fuel injectors 750 cc/min. The price for a nice but USED BMW 6 speed is often higher than a brand new Nissan transmission, atleast here. Just my 2 cents comments. Premature turbo failure might also occur on some occasions, as running more than 13 psi on a standard ceramic turbo might cause some troubles. These engines were installed on Nissan Skyline R32. The RB25DET gearbox is basicaly the same as a GTR gearbox (gear width, bearing size, shaft diameter etc) so it is a very strong gearbox. Also i never seen actual proof that the RB25 box is stronger. Confirm the wiring is done correctly and test the new engine. Yes you can do the swap. You can find RB25DET engines in both R33 and R34 Nissan Skyline GTS-T models. The RB25DET gearbox is basicaly the same as a GTR gearbox (gear width, bearing size, shaft diameter etc) so it is a very strong gearbox. I think you will struggle to deregister it in the other state, so I suspect that you are saying that you will be buying it unregistered because the owner will be deregistering it before selling it to you. Yeah well originally i thought the clutch had welded itself so i was driving it really hard, dropping the clutch and smashing gears (4th gear dissapeared during), then after talking to a few mech's and reading a few more posts, realised it was very unlikely this had happened seeing as it's n/a, and near stock. I also get rediculus fuel economy too because the revs are so low. They are Commonly worn out in Our Billet Steel4140Chromoly Steel RB25DET & RB26DETT Billet Shift Fork for 3rd & 4th Gear.Direct Replacement over theGenuine Factory Shift Fork which is known to fail. wow, 450 on wheel.. thats awesome!!! You should immediately forget of naturally aspirated tuning RB25DE or installing turbo kit on RB25DE. Bolt the transmission into the engine. maybe the halfcut engine that i got was already dying. 10. In other respects, these engines are quite reliable, if being served regularly and using high quality engine oil and gasoline. Drive home. I don't think they will de register it, they bought it sometime ago and I assume with QLD rego. What do you mean blue slip is provided by the seller? The QBE69G is the uprated version of the QBE60G with thicker shafts and bigger gears the main effect of these differences between them is the power rating: the QBE60G is rated to 375bhp and the QBE69G is rated to 750bhp " With a stack of different ratios and shifter positions the QBE69G is an attractive option. A mate has one behind a VG30DET in a 260Z. This alteration featured a revised electrical system and a new 45V2 turbocharger, which has a ceramic turbine wheel rather than the Aluminum wheel found in the previous S1. As I understand I first need greenslip before I can get rego) just woundering what dose an r33 rev on the freeway at 100km/h with a 5 speed. May this serve as a simple guide for understanding the engine that governs the iconic R33s and R34s. The normall aspirated VL box is small and weak - around the same size or smaller than the RB20. Im running whatever the stock R-180 I think its stupid high. In 1998 the engine was modified and named RB25DET NEO. When I looked at the 100kph speed in 5th with the 3.7 its actually about right around 2100rpm so maybe it will be ok. The stock one cant provide more power to reach that level, so upgrading to HKS GT2835 turbocharger would suffice. Parts may be cheap but labour to build and to convert your cyl. S2 cam angle sensors shaft goes slightly different into the exhaust cam. Losing power probly not seeing as you possibly dont have enough to lose. Even though it could be a little bit tempting, we dont advise going beyond 11.5 to 13 psi at this level since you will be using a stock turbocharger. Powered by Invision Community. 11. Post vids. Come join the discussion about performance, turbos, racing, parts, classifieds, modifications, troubleshooting, maintenance, and more! Designed for high horsepower applications where the standard gearbox is no longer capable of coping with the power, and ratios suited for motorsport and a sequential gearchange are required. Since 1995, ignition system, MAF, crankshaft position sensor and ECU were modified. Toyota 5VZ-FE: Everything You Need To Know. Why wouldn't you want 4.11's for daily driving? Features. As to increasing the boost on stock RB25DET turbocharger, their limit is just 11.5-13 psi (0.8-0.9 bar). However, if were talking about cars that came with the RB25DET engine, we have: Better yet, you can even put an RB25DET engine on a 240SX S13 chassis to improve its performance. Sure, there were other minor changes such as a new airflow meter, cam angle sensor, ECU, and throttle position sensor but there wasnt much of a big mechanical difference between series 1 and series 2 except the cam angle sensors shaft. Step 3 - Take your modified car to a blue slip workshop. Please login and you will add product to your wishlist. Step 1 - Get an unregistered vehicle permit from Services NSW Of course, some insignificant problems may still happen. It is much easier, more reliable, quicker and cheaper to purchase RB25DET, and you will gain much power at once. The Fora platform includes forum software by XenForo. Also RB25DE NEO has head with modified compression chambers, new camshafts and improved exhaust manifold. If you wish really impressive power, then better buy RB26DETT engine. tried searching, couldn't dig up anything? Other than Rb25, included in the RB series are RB20, RB24S, RB26DETT, and RB30. Youll also need the receipt or proof of purchase. Step 7 - Do a skid. However, even though the stock internals can withstand such high power outputs, even up to 500 HP, it is still better to back it up and keep the reliability high for the engine by buying forged pistons, MLS head gasket, GT-R rods, ARP studs, and do some head porting. A few years later in 1995, Nissan made a few adjustments by including ignition coils with built-in ignitors on the electrical system and switched the aluminum wheel on the turbocharger with a ceramic turbine wheel. I'm trying to decide which box I should use behing my RB30. N155 KID, Truth be told, the NEO head that was introduced in 1998 is a slightly better engine with stronger internals than the original RB25DET that came out in 1993. HOLD64, I know the RB25 box will be younger which is an advantage. Can anyone confirm the differences between a RB25DE and RB25DET gearbox. I'm using a 3:7 VLSD right now and it does tend to need more gear. Yes, you can do that but it requires a lot of work and sourcing a different range of aftermarket parts. The gears are the same in the GT-R, RB25, and Z32, so If you're using the Z32 diff, it's not a problem. Thinking about an engine swap? 9. Two inlets came into the manifold, increasing the air velocity, which gave the car a more lower-end torque action. The engine was applied for Nissan Skyline R33. RB25DET NEO engines use a 45V3 turbocharger with a larger OP6 turbine which some came with steel compressor and turbine wheels, in this case, a nylon plastic compressor wheel and ceramic turbine wheel. Replace it with another N/A box, it's simply not worth putting in the turbo box unless you have plans for big power upgrades down the track - talking turbocharging etc. Our VR38DETT engine guide is perfect for you. With the details you've provided, I'm guessing it will be closer to the following - Weve not really gone into the specifics, but if you want to tune an RB25DET engine and take it to the next level, what should you do? http://www.geocities.com/z_design_studio/transmission.html. RB25DE camshafts: duration 240/240 deg, lift 7.8/7.8 mm. It's been a few years, but from memory a VL box looks to be smaller than a RB20DET gearbox which is way smaller than a RB25DET box. Get laughed at. Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right. What have others used? if i got 45k i will buy over my mechanic skyline engine 8++whp with t88 turbine, researching and puchasing your own parts then pay someone to build your engine, true bro u build ur self with what u want is the best. That's what cheap RB25DET boxes go for. Step 5 - Pay for your green slip. In this case, you should just change the coils, and in general, change them every 60,000 miles of mileage (100,000 km). FS5R30A TWIN SYNCHRO, VG30DET,RB25DET,RB26DETT. RB25 engines used a similar cast-iron cylinder block to RB20, which it replaced, but with a larger cylinder diameter of 86 mm, camshaft with a piston stroke of 71.7 mm, and new connecting rods and pistons. 33gtr late 32gtr,rb25 neo FJ20ET TO RB BOX. You can leave the rear VG caseing on, but like I had said above, the shifter itself will sit 4 1/2 inches farther back then the RB25 transmission. So i'm putting the problem down to the gear box being screwed after changing gears without the clutch fully engaged. It's been a few years, but from memory a VL box looks to be smaller than a RB20DET gearbox which is way smaller than a RB25DET box. Upon this more than 500-600 horsepower will be available. Your future roadmap for tuning is limitless from heredepending how deep your pocket is. Sometimes the ignition coils do fail and cause misfiring.

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