So went to the dyno recently and wanted to get some input.
Maybe suggestions/ theories.


Mods:
B20Z block 84.5 with stock crank
12.0 compression rollerwaves
B16 head port job by Endyn
Bump Stix Cams by Endyn - degreed to specs
Blox Intake manifold ported
68mm Pro Products TB
Big Tube Replica Header
3" exhaust system
Cheapo 3" ram intake
450 DSM injectors on Hondata S300
All on 91 octane
12.3 to 12.7 A/F all the way to redline





Modified by BeniRacing at 5:43 PM 8/22/2008

 

did u use a velocity stack?? and is the blox manifold cut open and ported/polished on the inside to clean up the rough casting? or is iy just port matched to the 68mm?

maybe a perf x ....
but sounds like a solid setup

 

whats the size/stroke of the motor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mannyman &raquo;</TD></TR><TR><TD CLASS="quote">did u use a velocity stack?? and is the blox manifold cut open and ported/polished on the inside to clean up the rough casting? or is iy just port matched to the 68mm?

maybe a perf x ....
but sounds like a solid setup</TD></TR></TABLE>

Its a blox ported by endyn. So should be good.
I do not have a velocity stack.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91whiteZCrex &raquo;</TD></TR><TR><TD CLASS="quote">whats the size/stroke of the motor?</TD></TR></TABLE>

Stock CRV crank and 84.5 mm bore
The rods are longer with the raised wrist pins from endyn.

 

yeah the manifold is good then. A velocty stack type on the end of ur intake will yeild a few ponies. And what block is used, gsr???

 

I figured you knew from the 84.5 mm and CRV crank
B20z Block

 

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

The rods are longer with the raised wrist pins from endyn.
</TD></TR></TABLE>

usually means its stroked in some way.. like when u throw ls crank in b16a

 

Those are some good solid #'s man!
Thats an interesting dip there...Stock fuel pump?
How much more power you looking for?

 

in what car is it, and what's it run in the 1/4?

 

vtec's kicking in too early i believe? wherer it set at now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PyroProblem &raquo;</TD></TR><TR><TD CLASS="quote">Those are some good solid #'s man!
Thats an interesting dip there...Stock fuel pump?
How much more power you looking for?</TD></TR></TABLE>

Its got the 255 wahlbro pump.
And looking for about 235whp.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slofu &raquo;</TD></TR><TR><TD CLASS="quote">in what car is it, and what's it run in the 1/4?</TD></TR></TABLE>

Its in a 88 CRX SI and havent run it yet with this setup.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraType-R &raquo;</TD></TR><TR><TD CLASS="quote">vtec's kicking in too early i believe? wherer it set at now.</TD></TR></TABLE>

Im not really sure but I think its set around that first little dip, but I will have to make sure.

 

Where does the motor peak power at RPM wise?
And are you using the long rods?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Colt Seavers &raquo;</TD></TR><TR><TD CLASS="quote">And are you using the long rods?</TD></TR></TABLE>

He has already posted that.

-Custom header &gt; generic garbage.
-M24xx/Pro2

 

headers w/sequentially-paired primaries are known to yield dips like the larger one on similar builds.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BeniRacing &raquo;</TD></TR><TR><TD CLASS="quote">
12.3 to 12.7 A/F all the way to redline
</TD></TR></TABLE>

How about a leaner tune...? I see 235-240 easy if you bring it down to 13.5-14.

 

Ask Larry!

 

Yeah I was talking to some people about the header design actually causing that dip.
Wasn't sure if it would actually do that and be that drastic.

 

Sorry, I was the idiot behind the laptop on this one. The RPM pickup would not stay steady after 4500 rpms on this setup so I could not get a solid torque line with engine RPMS.

On this particular build, I didn't want to lean out the AFRs too much due to pump gas. I just feel uncomfortable sending people out the door with 13.XX AFRs to gain another couple HP. With correction factors, it just takes the ecu to lean it out due to IATs or ECTs to melt a nice motor down.

As far as the huge dip, the "tri-Y" header usually dips right in the 6500 rpm range. I've seen this on a ton of builds on HT, and on our dyno.

I think that if we threw some race gas in it, I could bump in a little more timing and lean it out a little bit more safely and get more power out of it. Then again, we are thinking about throwing it on a different dyno in town to see if ours does indeed read on average of about 7% lower than other dynos in town.
-Chuong

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slofu &raquo;</TD></TR><TR><TD CLASS="quote">in what car is it, and what's it run in the 1/4?</TD></TR></TABLE>

LOL yeah i busted a 15.5 @ 101mph with a 3.3 60ft.

I ran out of fuel at the line.

 

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

LOL yeah i busted a 15.5 @ 101mph with a 3.3 60ft.

I ran out of fuel at the line. </TD></TR></TABLE>

Your trap speed is high.

 

3.3 60ft??? damn u where just sitting roasting up the tires...lol
get some DR or slicks

 

bigger cams (Pro1 or 2)
real HyTech or SMSP or RMF header
BPI intake stack

 

Just because he has roller wave pistons doesn't mean that he's using a long rod....

 

isnt the endyn cams have jun 3 vtec lobes? if thats the case i dont see pro 1's or pro 2's picking up that much more top end.
also the rollerwave pistons are suppose to let you run more timing on higher compression without detonating.did you move the cam gears any even though they were degree'd

 

bigger throttle body as big as the manifold opening better intake a smsp hitech or other highend header.

and talk to larry to see if your head is setup to be able to run pro 2's without issues. they should hold the power a little higher in the rpms without dropping off