my numbers on the dyno

[nomenai]

well finally after a year of up's and down's i got my rb20 done. basicly is this:stock bottom endnew water pump and oil pumpcosmetic head gasker and arp boltsintake and header after marketgarrett gt35/40r turbo dual ballbearing650cc injector map acu compugreddy boost controllersard blow off valvetail wesgategreddy taiming belt

361 whp and 290 torque at 17 psi

i know i can puss it to 390 or 400 but im happy for now.

[Carl H]

not too shabby...looks like i have to up the ante again .

[Yellow4g63]

17psi is that all? Thought forsure you would take it to 22psi lol. Pump gas pull?

[nomenai]

yea pump gas

[StricNyne]

how does that sard BOV sound i go tit and havent heard it in the 2 yeas i owned it lol

[Sky80]

what are the specs on your gt35/40r? 17psi seems like alot for that big turbo? either way i bet she's fast! post some pics/video/dyno graph!

[Sky80]

oh yeah, you might want to change your sig too, it says greddy head gasket and your post says cometic...

[nomenai]

my too is not loud, my wasgate is more loud then the blow off valve.

[nomenai]

i can't post for some reason i can't do it any more. and yes the turbo is good for 650hp but im working on my next engine rb25det fully bild and im going to use it. but it spools at 3000rpm

http://www.turbobygarrett.com/...3.htm
Modified by nomenai at 4:09 PM 3/29/2007

[Carl H]

wait wait wait...you are running a gt35r variant and are getting full boost at 3k?how is that possible?i have a gt30r with a .63 turbine housing and i dont see full boost till 4k...

[nomenai]

no no no the turbo START SPOOLING at 3000rpm

[Yellow4g63]

what are the specs on your gt35/40r? 17psi seems like alot for that big turbo? either way i bet she's fast! post some pics/video/dyno graph!

17psi isn't alot he needs to run 25psi plus on that thing.

[Shocker]

17psi isn't alot he needs to run 25psi plus on that thing.

naw.. Im taking it he has the .63 ex housing. Seems like he could tune it more with that boost pressure and get more power... That is a decent amount of boost. He should be seeing around 400 on that pressure.

Where you on a mustang dyno?

[Yellow4g63]

Could be his stock cams and it's only a 2.0. RB25 would make power at that boost level for sure.

[Sky80]

Im not saying the numbers are bad (sh*t he's putting down more than me) but i guess im just comparing his numbers to carl h's numbers with a gt30r and at those same boost levels(im thinking of the numbers before his new setup)... and yes i read the post i know this is a rb20

[Sil240]

Those are Pretty good Fockin #'s.361 WHP is 425 Crank HP assuming a 15% loss.

[nomenai]

Could be his stock cams and it's only a 2.0. RB25 would make power at that boost level for sure.

ok for the rb20 in stock form i think this is the limit. remember the rb20 heads have a very small intake and exhaust valves and runners. second the valve spring start to float and i need bigger cams (more duration). but i don't care im building a rb25 so for me is enough for now. the power curve after the 360whp decrease. another i was running 8300 rpm's. NO POINT w stock engine it doesn't make more power after 7500 rpm's
Modified by nomenai at 5:43 PM 3/30/2007

[Carl H]

were you getting valve float?on my tomei cams revving to 8.5k i hadnt experience valve float.i think the general agrememnt is that past 6.5k stock cams for the 20 prove to be a hinderance to power.

[nomenai]

more then 360 whp past 7700rpm's w stock cams and valve springs

[Carl H]

yah i hear that but what i dont understand is that i was generating 387whp@18psi or so revving to 8.5k and i didnt have valve float at all.

[nomenai]

yes but i have oem cams i don't i have tomei's
Modified by nomenai at 6:14 PM 3/30/2007

[Carl H]

yes i understand this but the tomei cams have not only increased duration but lift as well, so i should have had valve float problems...

[Sky80]

I hate to keep bugging, but do you have the dyno graph that would be awesome...

[Sil240]

Higher lift cams with springs that are not strog enough would have valve float.

Long duration cams might have a problem with blow through.

I've never heard of valve float with stock cams, unless your spring are badly worn???

[nomenai]

ok lest

I hate to keep bugging, but do you have the dyno graph that would be awesome...

lets do this im going to send the dyno to you email an you post the pic in you account

[rbsileighty]

What intake and exhaust manifolds are you running... and where are you seeing full boost with that turbo?

Oh... and how did you mount the turbo if you do happen to be using a stock manifold?

You can send the file to me and I'll post it:[email protected]

[Sky80]

ok lest

lets do this im going to send the dyno to you email an you post the pic in you account

sweet,

[email protected]

ill post it as soon as i get it

[nomenai]

yes i have custom made intake and top mount header

[rbsileighty]

Do you have pics of your intake and exhaust mani?

Here's your dyno:

[Carl H]

your afrs are scary, worse than mine were...