Top RB20 Club... do you have over 260rwkw?

[Roy]

Personally im thinking i dont really want to throw away the nice long runners of the std RB20 inlet manifold. Has anyone actually put one of thee short runner manifolds on and gained torque?

I have a spare inlet manifold that i am tweaking to see if i can get a bit more out of the RB20...it will be a purely back to back test so will be interesting to see my results?

[Rolls]

The gibson HR31 used the standard over the top plenum and still made some serious power (300kw+). I'd personally leave it as it is unless you really have run out of room.

Edited February 21, 2008 by Rolls

[AD4M]

i have a std inlet plenum,throttle body, cams, gears, springs, the entire motor was unopend and were making 300rwkw! 405rwhp to be exact, lasted over 6 months on that power befor i changed the setup and added cams and a new turbo, it recently gave way haha

[Bunky_r31]

and the lesson there adam

if it aint broke... haha

what's the plans for the future?

[AD4M]

and the lesson there adam

if it aint broke... haha

what's the plans for the future?

too right there, we lean on this thing so hard its crazy its lasted a solid year of 20psi+ of boost haha

i honestly cant say yet because i really dont know! we're looking into building the 20 but its going to come down too how much we can squeese out of the 20 head in terms of flow.. probobly have an attack plan in a couple weeks

[Roy]

So what gave way? Piston, big end bearing?

[AD4M]

its suffering crank case pressure and blow bye so its the rings, on the first time out since the new turb it ran 12.5@113 and shat the motor on the same run. spewing because i was really confident the car had the 11 in it still

[Roy]

LOL so its still running, with blowing out hte dip stick and blow by or is it proper farked ?

[TurboX]

DAMN, wish I had just changed my Inlet manifold after a dyno tune then compared it again.

That would have answered all these front face inlet manifold questions!

BUT I didn't!

Changed a whole heap of things at the same time inc the highflow turbo...

[AD4M]

LOL so its still running, with blowing out hte dip stick and blow by or is it proper farked ?

hahah yeah it still runs,cable tied the dip stick in still gets a bit off boost aswell haha the 20 just wont give up in a big way!

Edited February 21, 2008 by AD4M

[r3240sx]

hahah yeah it still runs,cable tied the dip stick in still gets a bit off boost aswell haha the 20 just wont give up in a big way!

OK, so I dont quite have 260kw yet, but I thought I'd share about my motor while you're on that subject.

I'd been running around on about 270 hp with my RB20 which was probably a bit too lean. Ran strong for a few months with 16 psi, took it to the track and blew up on the first run. 1st and second gear felt like a bat out of hell! I felt a surge of power after hooking 3rd gear and babied it across the line for a 14.0 @105mph. Popped the hood, found had blown out the PCV considerably, and I had audible piston slap.

I drove the car for another 2-3 months before I had another motor lined up. When it was time to kill the car, I raced a buddy's 88 civic hatch with a b18. I got about 2-3 cars ahead (100mph or so) and looked back only to see a giant cloud of smoke left behind. Parked it a mile later and tore out the motor.

I think the moral of the story is the RB20 is stout as hell, and no matter how low the compression, it has too much pride to let itself loose to a honda.

I have a new motor in my car now, and a few mods that I'm just hoping to get over the 300whp mark with

Garrett t3, .60ar compressor .48 ar turbine 60 trim

tomei poncams

mild port/polish

supra 440cc's/nismo FPR

reflashed ECU

SAFC

I'll post a dyno graph asap, so I can actually contribute something of worth to this thread!

-Max

[Roy]

Yeh they are tuff. Mine is still running and this happened about 2.5 years ago

[RS500]

Yeh they are tuff. Mine is still running and this happened about 2.5 years ago

the silver bullet will just not die

Edited February 22, 2008 by RS500

[SimonR32]

just so everyone knows, adam may claim all this power but he does drive little a nanna

jks, he absolutley belts the shit outta that car, 3th gear peeling lines in traffic. got more mental problems than me

in all seriousness, i cant wait to get back to the dark side of rb20 love!!!

Edited February 22, 2008 by Cerbera

[Draconis]

What is the most anyone has gotten out of stock cams with adjustable cam gears? I'm looking for about 300rwhp or about 482rwkph. I have lots of other mods, so I do know they will effect my capability, but they will allow for that power range. Right now, the cams are the only thing holding me back for being able to breathe. Thanks mate.

[Roy]

What is the most anyone has gotten out of stock cams with adjustable cam gears? I'm looking for about 300rwhp or about 482rwkph. I have lots of other mods, so I do know they will effect my capability, but they will allow for that power range. Right now, the cams are the only thing holding me back for being able to breathe. Thanks mate.

300rwhp or what?

I am making about 340rwhp with std cams, valve springs, head, plenum, throttle body etc. I run a Greddy exhaust manifold and HKS cam gears. So doesnt seem to hurt power too much...i havce tried one set of cams with less then spectacualr results. So just be careful when chsoing cams to make sure they suit the turbo/engine configuration

[Draconis]

wow... sorry Roy about the rwkph. I was trying to say miles per hour and translated that to kilometers per hour in some other computation and somehow got it mixed up with my horsepower computations and such. Been trying to figure out several things here, but you answered my question entirely. Shit, I dont know how many times you have helped me in both answering my questions and with the many posts you have done in the past. I will be posting my power here hopefully in the next month or two. Finally I'll be about satisfied with it.

Edited February 28, 2008 by Draconis

[huddy]

to back that up... i'm in the club now!!!

RB24 - GT3076r (.63 IW)

standard head/cams/cam gears set on 0/standard throttle body/standard plenum.

i'm looking into some poncams and hoping to get a bit more out of it.

possible wheelspin up top also??

this was with rev limit at 7200.

rev limit is now at 7500

Edited February 28, 2008 by huddy

[Roy]

Yeh BABY!!!! Looks strong. So what was the issue?

[Simon-S14]

who so low rev limit??