Rb26dett

Discuss the RB20, RB25 and RB26 series engines.
TBNismo
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I have an opportunity to put a r34 rb26dett and 6 speed gearbox in my 95 240sx. I got the whole package for 5,000. my other option was buying a s13 sr20det and spending the next 3 grand in engine work. would i be better off with the rb or the worked sr.


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WDRacing
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Stupid question, but I'll assume your new. There is no way your going to build an SR for 3grand that will outperform an RB26. The RB26 can make 500HP without even breathing hard.

WD

Siddhartha
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What would need to be done to the RB to make this amount of power, WDRacing? I don't think that question has been answered here yet, and would make a good sticky.

Daunttless
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I/E, Bigger Injectors, Fuel Control, Boost Control, Twin GT2530s, Head Gasket if you so desire, Front Mount Intercooler, Downpipe, Fuel Pump, 256 or 264 Cams if you like, thats about it, I may have forgotten something but I don't think so.

JESTER
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Only thing, the price of the install on the RB.

If you have the cash to install and the minor upgrades go for the RB. If not, SR. The 240sx with an RB26DETT has to be the Holy Grail of the import world. I have dreams about that

Good luck. I hope everything goes well. And keep us posted.

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WDRacing
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Daunttless wrote:I/E, Bigger Injectors, Fuel Control, Boost Control, Twin GT2530s, Head Gasket if you so desire, Front Mount Intercooler, Downpipe, Fuel Pump, 256 or 264 Cams if you like, thats about it, I may have forgotten something but I don't think so.


You could leave the stock cams in as well as the head gasket and hit 500 with no problems. But the rest is pretty essential.

But if your like me, you'll drop in the cams and add alcohol, then push her till she starts to pop and back it off just a tad.

Its not going to be cheap, but there aren't to many 600+hp 240's that come on boost at 2500 roaming the streets these days. You'll have serious traction issues, but that isn't always a bad thing.

WD

Siddhartha
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what about twin t3/t04rs? what kinda performance would they yield? would it be streetable for drag-racing?

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themadscientist
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Got a sledgehammer? You will need one to fit two of those in there! Traction is nonexistent with this setup. Unless you are building it for strip only and tubbing it or highway racing you are going to be frustrated with it.

Siddhartha
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::quickly puts sledgehammer behind his back:: Uh, yeh, non-existant traction, I knew that . . .

Seriously, though, what would be a good turbo/set of turbos for drag racing?

Daunttless
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GT3037s? Or Bigger? : ) Depends on how much power you want to make. You're looking at TONS of money to prep the car for that amount of power though.

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themadscientist
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Well I have seen T51R-SPLs, T88s,twin GT3037Ss and twin GT3240s that respond very well in a drag situation, in a 4wd GT-R. Now let's take a buddies 180SX, RB26 with twin GT2835s. Loses to T04E-boosted HachiRoku, why? tons upon tons of wheelspin. Second example, Silvia with RB26 and T51R. Loses to CA18 with T04R up in mainland, why redefines wheelspin. I have seen several 180s or Silvias with big ol RB26s but I haven't seen one yet that solved the traction problem. Well HKS's 180SX but it's tubbed, big gumballs, little different. I am not saying it is impossible but it would take a guy skilled in setting up the chassis and suspension for drag, excellent driving ability and really smart boost management.

JESTER
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Dont flame me for this one. But............

I say go for a single turbo upgrade. Say a T60 or something in that area. I here they spool pretty quick. If not you could go with a 50 shot off the line that cuts out when the boost from the turbo kicks in.

CurlyStooge
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Personally, go single turbo. Twin turbo is pretty much worthless on the RB26 in a 240sx. The downpipes would have problems clearing the steering system and brake system. The best bet with sticking an aftermarket turbo in the 240s bay with an rb26 would be a single turbo on a manifold that pushes it slightly towards the front, to give more room for the downpipe to return without hitting anythign, or coming too close and causing reliability issues with heat stress on parts. Drag racing wont do too well with a 60mm turbo, theres little to no lag with that, but compared to a nice 70+mm, theres little to no top end either. I personally would go with a 66mm or something along that line, not too bad of lag and extremely nice top end. Also, any TT kit you can put together couldnt make any more power than an 80mm turbo with 3.5" downpipe, plain and simple. An 80mm will push enough to make over 1000hp easily, Titan motorsports made 1047whp with a Greddy T88H SPL, the T88H is smaller than our 80mm supra kits too.

Siddhartha
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Wow, the hulkster lives in O-town??? Holy ****, I was a hulkomaniac from waaaaaaaaay back . . . AND he has a supra and not some expensive italian car. Wow.

Nitrous helps spool turbos???

CurlyStooge
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Siddhartha wrote:Wow, the hulkster lives in O-town??? Holy ****, I was a hulkomaniac from waaaaaaaaay back . . . AND he has a supra and not some expensive italian car. Wow.

Nitrous helps spool turbos???


he lives in the clear water area, brings his car to us though. He won't take any of his cars to anyone but Larry, PERIOD. He's bringing his charger over next. The supra was built for his 12 year old son (no, im not joking), his son wanted a muscle car, went online looking for mach 4s and searched for "MKIV Performance" and it brought up supra stuff, he looked, he liked, he got. Hulk fell in love with the all mighty supra during the drive to and from the shop, and the many nights out with Nick boosting it, and is thinking about tting a 2002 VVTi supra TT from Japan. LOL. Hulk can't drive supercars, I asked Nick (his son ) and he said "no, we've tried getting them before, but my dad doesn't fit in any of them". LOL. His whife drives a turbocharged Bentley, the thing is huge, I've seen boats smaller than it.

edit: oh yeah, if anyone wants it, I've got his private cell number, thinking about celling it on ebay (jk, i wouldnt do that, lol).

Siddhartha
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The Hulk was my fave wrestler back in the day, followed by shawn micheals and the old school Undertaker.

Figures he wouldnt fit in a supercar, I mean, c'mon, his NAME is the Hulk . . . .

CurlyStooge
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his real name is Terry Bollea

veilsideS14
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You mean like this?



It can be done and I have done it. No sledgehammers required.

~~~~~~~~~~~~~~~~~~~~~~~The site of all the madness...coming soon:http://www.exhaustnote.com

CurlyStooge
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veilsideS14 wrote:You mean like this?



It can be done and I have done it. No sledgehammers required.

~~~~~~~~~~~~~~~~~~~~~~~The site of all the madness...coming soon:http://www.exhaustnote.com


im pretty sure the person that made the sledgehammer comment was referring to 2 huge turbos fitting, not the engine itself. Like what you'r doing by the way, when do you expect it to be finished?

JESTER
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Siddhartha,

You set your nitrous to activate off the line before the (usually large) turbo hasn't had a chance to spool up. When the turbo gets spooled the nitrous shuts off and lets the turbo do it's job.

The N2O takes the place of the boost from the turbo until it spools so you don't experience any turbo lag.

(I bought a manuel on the use and installation of Nitrous systems.) What can I say.

Siddhartha
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OOOO!::smacks forehead in amazement at his stupidity::

CurlyStooge
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JESTER wrote:Siddhartha,

You set your nitrous to activate off the line before the (usually large) turbo hasn't had a chance to spool up. When the turbo gets spooled the nitrous shuts off and lets the turbo do it's job.

The N2O takes the place of the boost from the turbo until it spools so you don't experience any turbo lag.

(I bought a manuel on the use and installation of Nitrous systems.) What can I say.


ummm, that manual you bought should have told you that you dont shoot nitrous off the line because of traction problems.

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themadscientist
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I inject the nitrous directly into the cabin. It doesn't make the car any faster but I don't seem to care after a couple of seconds.

CurlyStooge
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themadscientist wrote:I inject the nitrous directly into the cabin. It doesn't make the car any faster but I don't seem to care after a couple of seconds.


:crazy :jump

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WDRacing
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Actually I know quite a few people who have there N20 set to open as soon as full throttle is apllied. Which in there case is usually 5 feet forward from the line. This is on GTR's by the way not 240's.

I do have a friend(Bill) who has a 180 with the RB26 sporting twin 2530's. He runs Nittos and Tein, I believe, coil over's. He has minimal wheel spin. But then again he can drive well. His car dyno'd at just over 500RWHP.

Alot of poor traction results come from the clutch and throttle. It takes a nice happy medium of both to get good ET's. But that is the same with any high HP car.

WD

CurlyStooge
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WDRacing wrote:Actually I know quite a few people who have there N20 set to open as soon as full throttle is apllied. Which in there case is usually 5 feet forward from the line. This is on GTR's by the way not 240's.

I do have a friend(Bill) who has a 180 with the RB26 sporting twin 2530's. He runs Nittos and Tein, I believe, coil over's. He has minimal wheel spin. But then again he can drive well. His car dyno'd at just over 500RWHP.

Alot of poor traction results come from the clutch and throttle. It takes a nice happy medium of both to get good ET's. But that is the same with any high HP car.

WD


well its different with AWD cars, im talking fwd and rwd, 90% of the drag car population. But you do make a good point. As far as the rb26 180sx, your a luck bastard living in japland. LOL

JESTER
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Most of the cars around my area who run nitrous are activated off the line (full throttle).

Now I don't know how you guys set up nitrous systems, but all the of systems I have researched are design to be activated on throttle, not little push buttons on the stearing wheels. Those little suicide switchs tend to get stuck and you are out of an engine. Off the line you hit WOT and the N2O kicks in. That's how the systems are designed to work.

And that is for all applications. Whether it be a Mustang, Skyline, Civic, or 240sx. If you dot belive me check out some of the web sites. NOS, Venom, Nitrous Express.

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GatorS14
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damn,the hulk makes that supra look like a golf cart!

Siddhartha
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The Hulk would make a friggin' Excursion look like a golf cart . . . .

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themadscientist
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WDRacing wrote:I do have a friend(Bill) who has a 180 with the RB26 sporting twin 2530's. He runs Nittos and Tein, I believe, coil over's. He has minimal wheel spin. But then again he can drive well. His car dyno'd at just over 500RWHP. WD


You mean Western World Bad-Billy Morris "the longest arms in racing" I thought he left. I haven't seen him around in ages.


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