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What Next For My Rb20det?

limpus

By limpus,
in Engines & Forced Induction

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limpus Mentor

limpus

Posted
Posted (edited)

Hey fellas...i'm just after some opinions on what you would do next if you were in my position...i have a rb20det R32 making 217rwkw @ 19.5psi with the following mods:

1989 RB20DET R32

3" Turboback Exhaust with 3" Metalcat

Hybrid FMIC

Bosch 040

GTR Injectors

Z32 afm

Turbotech Bleeder

Aerospeed cam gears

HKS 2535

DR DRIFT Remap

To me the usable power at the moment is decent but i was wondering if there was anything more i could do...perhaps cams or some head work? If you were in my position what else would you do to the current setup to give it a slight edge? I'm not keen on a rb25 or any other conversion just yet and the rest of the car (clutch, suspension, lsd, brakes) have been done already...i'm looking for genuine suggestions to undertake in the near future as i'm enjoying the car as is for now...Cheers!!

Heres a dyno chart from my last tune...the lower reading was from the last tune without the Metalcat...

217rwkw.jpg

Edited by limpus
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abu Grand Master

abu

Posted
Posted (edited)

Nice result mate.

I have to agree with you there, stick with the RB20! To many people give up on it too quick.

What do you use the car for?

A good set of suspension (coilover's) would go a long way, you could make some good use of that 217rwkw! That would really help you get the power to the ground, weather your drifting it or using it for track use. Even on the street it would be quiet an improvement.

CAMs would also be alright, maybe more response, quicker spool up?

How does the HKS2535 go on the RB20? Does it feel laggy or you don't miss it at all?

Good luck with it! Keep us posted on your results.

Thanks,

Abu

Edited by abu
limpus Mentor

limpus

Posted
  • Author
Posted

Thanks mate...i've already got suspension...and done the rear subframe bushes too along with a 1.5 way lsd...with any larger turbo the rb20 would be alittle laggier than stock...but its all worth it above 4000rpm when it comes alive...i was looking for alittle icing on the cake for the engine...like head work or cams as mentioned or even a proper exhaust manifold...i believe i have already done most of the usual bolt on mods so now i'm looking for ideas...cheers....

BAMR33 Mentor

BAMR33

Posted
Posted (edited)

Power is just a number... Head porting and cams will make more power but it won't be worth it for the amount of cash you fork out. Besides 217rwkW is crazy for an rb20 especially with such a nice power curve, I'd be happy with that and enjoy it.

Edit: Maybe an ebc

Edited by BAMR33
CEF11E Veteran

CEF11E

Posted
Posted

enjoy it for a year with no more mods. when the 20 pops build a larger capacity engine. it is so much easier to squeeze power out of a larger capacity to begin with. don't waste any more on it it is already a more than capable package just enjoy it :down:

Roy Grand Master

Roy

Posted
Posted

Dr Drifts dyno reads a tad lower then DD. In my experience its around 10rwkws lower.

It seems nice in the mid up to 4,000rpm. But considering the boost you are running is still a bit down on what i would have expected. Maybe the exhaust is hurting power and response a little. I woudl be interested to see how yo ugo with cams. I had no luck with cams in my car. The cams didnt gel with the turbo i run. Looking at the std RB20 cams they are not too different to RB26s, only slightly less lift. So the std cams are pretty big for a 2L

As others have said. Just enjoy thrashing around in it until you win lotto then buy a TVR :down:

limpus Mentor

limpus

Posted
  • Author
Posted

All very valid points...thanks fellas...i did think it was down on power slightly but like mentioned power is only a figure...i am enjoying the car as is for now... the exhaust might be alittle restrictive still as i had a large resonator welded in to keep exhaust noise down...i'm inclined to agree with most of you and just leave the car as is...was just looking for ideas...thanks for your input guys...cheers....

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