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Motorsports and Skilled Driving Discussion for Organized Racing and motorsports and tips and techniques at becoming a better driver. |
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#1 |
How good of a track car is it with an RB25DET
I'm new here, I hope I'm not posting in a wrong place.
Who's tracking his car with an RB25, any heat issues with these engines? How's the reliability? I hear the tranny is a solid piece I don't have to worry about, and a healthy engine can handle around 400whp, no? I've been reading a lot the past week and have a lot of research ahead of me, just wondering if it is possible to track them with 550+whp? I track my mustang gt '11, so 400whp second car isn't worth it. I can make up to 500whp with these 5.0 engines, so I need to own something scary lol. Owning a built rb25 motor in a 240 will be double(or more) the price of that NA build (+set of wheels, brakes, paint, tuning, suspension... basically a lot) So how good of a track car is it? I've seen one with an SR20det at the track and it was really fast straight/corners, but he had heat issues, never saw that guy again ![]() |
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#2 |
Nissanaholic!
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Zilvia "database error" ate my answer and i dont feel like writing it again, so here is the short version:
RB25 makes S13/14 quite nose heavy, and if you think an SR S13/14 has heat management issue, this is a whole other level. I cant see an SR overheat unless it is poorly mapped and/or something went wrong. You are in V8 land, so slap an LS7 in it if you want power. Lighter, better weight distribution, no need to rebuild the engine, nothing to worry about reliability, cheap usage. If you are not satisfied with that kind of power, you alway can add a couple turbos on that. I think it still will be more reliable than an rb25. One of the hardest thing to do when swapping an rb is sourcing a good condition one, with the good crank, otherwise you are in for quite some work. |
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#4 | ||
Leaky Injector
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#5 | |
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can you give me more details on the car? (mods, mileage on the engine, power, etc) Can you tell me where did you get it from, it seems that every time I found someone that sells them I find horror stories somewhere. |
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#6 |
Leaky Injector
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![]() I got the swap from JDM VTEC in canada. It came with a test drive video and 33,000k on the car. It is a series 2 RB20DET. It has 660cc injectors, Godspeed kkr430 turbo, huge same side intercooler, Nistune Ecu. It is pushing 16psi and dyno numbers of 400hp and 396 toque on race gas. Top 16 xdc Texas. Next upgrade arrived for christmas, new Godspeed intake manifold and intercooler. This is such a fun ass car and really reliable.
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#7 | |
Man w/ CTSV & a Car Seat
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#9 |
Zilvia FREAK!
![]() Join Date: Jul 2009
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Going on two years with mine and it still isn't running right. Someone shoot me.
RB26 is next up, hopefully...after I get tired of trying to figuring this one out.
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#10 |
Zilvia Junkie
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Over heating can be solved by notching the radiator support so that twin 12" pullers with a shroud can be used. I also run a nismo thermostat. My car rarely sees over 180f.
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INTENSE POWER RIPPED ME OFF |
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#11 |
Leaky Injector
![]() Join Date: Oct 2009
Location: Long Beach, CA
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depends on what series your going to compete in.. that's if you are though..
if you just want a weekend track car.. something with replaceable parts would be much better... KA-T.. SR20.. VQ.. and the bandwagon engine LSx... using a LSX is great.. for drifting u can bang the limiter all day and not give a shit lol... as far as using the RB20/5/6/30 it would make great for a TIME ATTACK car... if u had shit ton of money to throw around.. it being nose heavy is something that can be made up for... i actually like a lil nose heavy ![]() |
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#12 | ||||||
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I've seen a lot of guys say the extra weight is from the tranny and won't be very noticeable. I see some agree with you over here. I was planing on changing the bottom end anyway. Quote:
I've seen the complaints about bad oil pumps and starvation when making over 1Gs, did you have any experience with that? Quote:
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#13 | |
Zilvia Member
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All of the aftermarket radiators add rows and are too thick with out cutting the radiator support. I wish Koyo made an OEM replacement copper core for the KA. |
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#14 |
Zilvia Junkie
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Never been on a dyno with my current setup. Stock long block RB25, twin scroll t4 manifold, 4" dp, HX52 (67mm turbo) at 19psi, 800cc injectors, etc. Power wise, I'm guessing close to 500whp. A buddy of mine made 480whp at 17psi with a similar turbo.
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INTENSE POWER RIPPED ME OFF |
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#15 |
Leaky Injector
![]() Join Date: Oct 2009
Location: Long Beach, CA
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why time attack.. makes easier power.... great mid - high end torque.. while hitting almost 9k rpm... engine response on a RB is insane if done up properly..
ov course u can go with a 2J and 1J.. but lets say you did decide to compete in time attack.. for instance GTA.. this allows you to compete because you use a engine from another car.. but from the same manufacture ![]() i wouldn't DD / track a RB engine.. at all due to insanely expensive.. replacement parts.. |
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#16 |
Man w/ CTSV & a Car Seat
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Here's a good read on the oiling issue with RB engines.
The SkyLife - Modified and Exotic Car News Community, Tutorials, Build Stories and How To guides.: Nissan Skyline GTR Oil Pump problems I have the snout issue, but I just said fuck it and slapped a new N1 oil pump. ![]() As far as temp, I'm not running AC, using a Nismo thermostat, some no name Ebay Aluminum rad, Dual FAL fans that I'm using as pushers and a PBM Swirl pot. No issue at the track or daily with the fans on. Car would get hot on the track but not till after running it hard for a while. I'd kick the fans on, chill for a few minutes to get it back down and would sit about 76*. Still running a stock turbo setup so putting down maybe 210 on stock boost. I got a old IHI turbo kit to put in that should get me close to 400 and be happy with it. ![]() |
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#17 |
Honestly an ls swap is more than perfect for the track. You can make easy reliable power, low end torque and it maybe a bandwagon swap but people are doing it for a reason. Weight isn't to far off a ka.
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#18 |
Zilvia FREAK!
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okay first off people need to get off the LS bandwagon. First off its the same price swap for swap for an ls or rb26dett. Go price out everything. okay with that being said it depends on what you wanna do witht he car. Then go from there im doing a 26 swap with a 50/50 weight basis so if you want some pointers let me know
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Drifters Do It Sideways |
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#20 |
Leaky Injector
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Uploaded a video from 2011, my Qualifying run with a bone stock RB20DET. Built car in 8 days and got 3rd even with blown stock front coils.
Round 4 Vegas Drift 2011 Joey's qualifying run - YouTube |
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#21 | |
It's Always Broken.
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So are you on stock internals with your KKR?
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#23 |
Zilvia FREAK!
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I'm currently building an rb25 s13. I would have went v8 if I had known better. Parts take for ever to come in and are hard to find. But I really do live a turbo car so I'm still happy. But my car would be running right now if I just bought a v8. You can get parts for those at autozone. You break a belt at the track you can just go to an auto parts store and get one. You break a belt on the rb, and your done for weeks
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#24 | |
Leaky Injector
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#25 | |
Nissanaholic!
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what country Are you in?? i get my rb parts in a week or less(due to shipping). you can get a timing belt in a week. i got a nismo n1 oil pump next-dayed for 210.00 total. a few dealers specialize and stock rb parts. don't drink the kool-aid!!
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#26 | |
Post Whore!
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I agree with this, parts are everywhere for these motors. If you break a fan/ps/alt belt everyone carries them as you only need to know the size and rib numbers, nothing special. I tossed a alternator belt a few years back, rolled into a autozone and had it on the car in less then 30min including clean up. As for OEM stuff it can take a week or so and you have to know part numbers but most dealerships can get it for you if they are not lazy and will take two min to type in the number you give.
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Need to adjust your idle? http://zilvia.net/f/s-chassis/395413...-pictures.html |
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#27 |
Man w/ CTSV & a Car Seat
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My thing is that I've driven cars with an LS in it and honestly, wasnt too impressed with it. I just prefer boosted cars more. Then again, this was during the time I had a 500hp SR so I may be biased a bit.
Who cares if you can can get a crate motor for less than what it cost to an RB engine, you'd get a long block with nothing else. No supporting parts on it like harness, TB, alternator, starter, ECU or transmission. Take you alot more money and time trying to source all that stuff out, then still have to find swap components for it. |
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