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Rb20 Powah - Full Update ! New Graph

raz0r$harP.UK

By raz0r$harP.UK,
in Engines & Forced Induction

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Roy Grand Master

Roy

Posted
Posted
you still keen to get your beast checked out on DrDrifts dyno? i'm free all this week :D

It wont be happening for a few weeks, teh car still hasnt left the paint shop, so thesetup isnt back on proplery yet. It wont be happening before Dutton as i just wont have time, the only dyno time the thing will see is at the mechanic/tuners

raz0r$harP.UK Grand Master

raz0r$harP.UK

Posted
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new graph is up in the first post, the mechanic read it wrong as he only glanced over when he called me.... it was actually 270.8 which is bit lower but im still way happy... that was at around 21.5psi going down to 20psi up top

looks like a cliff though

they said it has potential for a lil more

yeah its externally gated with screamer

hks 256 cams... unsure on headwork

EDIT: just noticed but with the bov fixed n boost holding the 270 run spools a decent amount earlier

Roy Grand Master

Roy

Posted
Posted

Any more info an air:fuels etc. How to the line has the thing been tuned. Quick run down to Wakefield and thrash it senseless and let me know how it goes...i want to run 20psi at Dutton which will net me around the mid 250-260rwkws.

Do you know the engine has pistons or not? Also curious to know what boost you are planning on running day to day...i hope your engine is stock as the response isnt really any different from mine when running the same boost...lol i wanna know ho much you can lean on the std engine.

raz0r$harP.UK Grand Master

raz0r$harP.UK

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hahaha

not sure on pistons but it was meant to have been rebuilt so i would assume so ... but who knows

ill be running it daily on 18/19 psi

ill have to try and get print out with af ratio's but i dont have one yet

RS500 Experienced

RS500

Posted
Posted

well done dude. that's awesome power out of the RB20/22.

i have a Trust TD06-25G kit sitting in the garage which i wouldn't mind putting on my car but i'm afraid it will be too laggy.

maybe i should put the RB24 together ;-)

FATGTS-R Experienced

FATGTS-R

Posted
Posted

These engines always amaze me. From what I have seen boost control and tuning i.e timing have major impacts and can make some peoples results seem meek to what I assume could be there true potential. Goes for all engines I guess.

Was there any major boost control changes and/or tuning changes in the bottem end of the run from the 230 to 270kw runs?

Comparing razors 230 graph to Roys 230 graph if anything roys is better down low indicating maybe it isnt 2.2 but maybe it is?. At ~106km/h raz has 13psi as does roy, but roy has about 125rwkw where raz has about 112rwkw.

But bring in the 270 run and its like a different car altogether. 106km/h has 150rwkw and 20psi, the 13psi was reached at approx 99km/h this time?

I encountered the exact same thing with mine. Power started at about 170rwkw,then 200, then 230, then 280rwkw. Each time power increased my boost was increased (same turbo all along) but the boost threshold never changed. Off the spring it has 7-8psi which hits at about 4,000rpm and with the 280 run it spikes to 24psi and then settles at 20psi but once again its all in by 4,000rpm?

The major difference according to my tuner was that he used in his words "a shit load more timing" across the board to bring things on earlier and be more responsive and compensated by keeping the a/f ratios at a sane level. My a/f plot peaks at 11.5:1 and at full noise is 11.2:1.

Would love to overlay our graphs as my engine is also an unknown with many beleiving its stroked as well but my plot is in rpm not km/h.

After all that, once again congratulations on your result. I'm sure Carlh has been lurking and waiting to bombard us all lol. Hope he gets the triple tonne.

raz0r$harP.UK Grand Master

raz0r$harP.UK

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the only difference in the 230 / 270 runs was the 230 one the bov was leaking... it was plated off and boosted up.. thats why there wasnt the big drop in boost as comapred in the 230 run

i am hoping it will spool like the 270 run with the bov fixed

thanks and yeah it will be awesome when an rb20 runs 300

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