Hey guys,
I mostly search when I need info. and read posts. This time I couldn't really find what I was looking for so... I need some opinions on what A/R I should get. I'm looking to make around 550hp and thinking about getting t3/t67. Since its a b16 I know im probally gonna have to rev it to about 9500 to get a good power band out of it. Do you guys think I should get the .63 or .83 A/R? I'm not worried too much about lag, I used to have a t3/to4e .57 .82 a/r. on a stock b16 and made 280hp before. I'm just not sure if the .63 will make power at that rpm.

Engine Info.
benson sleeved b16a block
83mm CP pistons
Eagle rods 3/8 bolts
portflow springs and retainers
Skunk2 valves, and IM
one fab non a/c mani

 

 

.63 a/r

 

The .63a/r will be more then enough for only 550whp on that turbo..

 

I know the .63 will support that much power, but what I'm wondering is will it make power past 8500 or 9000?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92cxturbo &raquo;</TD></TR><TR><TD CLASS="quote">I know the .63 will support that much power, but what I'm wondering is will it make power past 8500 or 9000?</TD></TR></TABLE>

yes

 

All the dyno's that Ive seen with the smaller .63 a/r seem to fall off around 8800. I would really like to make power to 9500 atleast.

 

.82 A/R My old B16A had a T3/60-1 with .82 A/R made 500whp 25psi then later I got the Full Race T4/T67 with .68 A/R BUT that is T4 full spool 6500 and made power to over 10,500 RPM

T3/60-1 chart here

https://honda-tech.com/zerothread?id=311514

T4/T67 chart here

https://honda-tech.com/zerothread?id=1069197

 

https://honda-tech.com/zerothread?id=1377270

If a .63 A/R will pull to 9500 no problems on Servion's 1.8L motor, it'll do 9500+ on a B16 without issue. .82 A/R is going to give you additional lag with minimal top end gain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tokes1320 &raquo;</TD></TR><TR><TD CLASS="quote">https://honda-tech.com/zerothread?id=1377270

If a .63 A/R will pull to 9500 no problems on Servion's 1.8L motor, it'll do 9500+ on a B16 without issue. .82 A/R is going to give you additional lag with minimal top end gain.</TD></TR></TABLE>

UH going from a .63 A/R to an .82 A/R is going to spool maybe 300-500rpm slower BUT will give 20-30whp gain! Also Full Race and Jeff Evans had done some testing on a GT35R with .63 A/R and then .82 A/R and spool they state was identiacal BUT power gains were significant.

 

If he only wants 550 WHP i'll take the .63 A/R and throw another pound of boost at it to compensate for what the .82 A/R hot side might make. The only tests I've ever seen were between a .63 A/R SC61 and a .82 A/R GT35R that Jack @ P1 did, and even comparing a journal bearing to a ball bearing turbo the lag added was fairly significant.

Heck at "only" 550 WHP I'd probably skip on a T3/T67 all together and "step down" to an SC61, maybe a .63 A/R GT35R or even a GT30R and take all the added powerband I can get, which is the focus of his initial post.

 

The least amount of backpressure is really what you want for max power and efficiency.

 

Thanks for all the replays guys! my goal isnt that I only want to make 550hp I just fell it would be a good starting point, and then be able to make more later down the road. I thought I read in a post that Servion was gonna switch to the .82 A/R.(I just realized Ive been sayin .83, oops ) Does anyone know if he has yet? I would really like to see a comparision on that.

If want I want is least amount of back pressure which makes sense to rev to though's rpm's then would I be better off just getting the H.O.?

 

Yeah if your going to go with the .82a/r you should just step up to the P trim (H.O.).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboElements.com &raquo;</TD></TR><TR><TD CLASS="quote">Yeah if your going to go with the .82a/r you should just step up to the P trim (H.O.).</TD></TR></TABLE>

 

I think thats what I am gonna do. thanks guys!

 

I'm working a B16 project, too. So this thread is very informative for me, cause i'm still unsure which AR i shoud use.

Can you please explain what the advandace of the P Trim will be? (compared to the Stages 1-5)

TIA,
Doc

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostfed.com &raquo;</TD></TR><TR><TD CLASS="quote">
UH going from a .63 A/R to an .82 A/R is going to spool maybe 300-500rpm slower BUT will give 20-30whp gain! Also Full Race and Jeff Evans had done some testing on a GT35R with .63 A/R and then .82 A/R and spool they state was identiacal BUT power gains were significant. </TD></TR></TABLE>

Jeff's test is not going to be the same if they used a 67. Ball bearing's are going to make a big difference in this case IMO. I can guaranty it will be at least a 500rpm difference. If you will never want more then 500-550HP, go with the .63.

And il agree if you only want 500HP get the SC-61 and spend the extra cash on an victor x IM or something I dont know if you have ever driven with a 67 but the power comes in like you would not believe (all of a sudden), the sc-61 is a smother transition and is much more manageable on the streets IMO.

Oh I have an sc-61 an non-ac one-fab manifold FS right now too. Both brand new, PM if interested.

Happy Holidays

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White Smoke &raquo;</TD></TR><TR><TD CLASS="quote">

Jeff's test is not going to be the same if they used a 67. Ball bearing's are going to make a big difference in this case IMO. I can guaranty it will be at least a 500rpm difference. If you will never want more then 500-550HP, go with the .63.

And il agree if you only want 500HP get the SC-61 and spend the extra cash on an victor x IM or something I dont know if you have ever driven with a 67 but the power comes in like you would not believe (all of a sudden), the sc-61 is a smother transition and is much more manageable on the streets IMO.

Oh I have an sc-61 an non-ac one-fab manifold FS right now too. Both brand new, PM if interested.

Happy Holidays </TD></TR></TABLE>

Yeah I have driven with a 67 before!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostfed.com &raquo;</TD></TR><TR><TD CLASS="quote">Yeah I have driven with a 67 before! </TD></TR></TABLE>
I was referring to the thread poster in that second paragraph. Sorry if that was not clear.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White Smoke &raquo;</TD></TR><TR><TD CLASS="quote">
I was referring to the thread poster in that second paragraph. Sorry if that was not clear. </TD></TR></TABLE>

I know!

 

im, running a b16 with a sc61 w/63 ar and i made 595 on 28lbs.im goin to the t67 ho for next season.heres the graphhttp://forums.evans-tuning.com/viewtopic.php?t=2475

 

T3/67 H.O. .82ar 15 psi revin to 10k

http://neptune.evans-tuning.co...t=112