Re: https://honda-tech.com/zerothread?id=1420377

Set Up

SMSP Big tube D16 Prototype header w/ 2-1/4" outlet into
a 2-1/4" 300 cell spun body cat into
a Greddy 60mm B pipe into
a 2-1/2" Magnaflow muffler

Gude Cam (.405" lift)
AEM adjustable cam gear
Y8 IM with ported runners by DFE and Skunk2 IM to the guys at Skunk2
Head had a medium port job by DFE (I'll let DonF explain all he did or didn't do)
Stock A6 valves and valvetrain
P29 +.25mm pistons (.040" in the hole) block work by DFE
Stock rods resized w/ ARP bolts by DFE
ARP head studs
Stock Crank polished by Justice Racing Engines

Tuning by SGT

First runs were done with

Y8 IM with the runners cleaned up about 5-6" from the head by DFE
54mm TB (not sure what it's from)

The base run..... pretty funny, got to love that AFR



After adding and adding and adding fuel this was the best run with the mildly ported Y8 IM and 54mm TB. As you can see this isn't the engine for this big tube header. At 7000 rpm we were at 100% duty cycle for the 240cc injectors at 44psi.



Now compared to the base run, a 33whp jump from tuning. That's a 34% increase.



Then we changed to the Skunk2 IM. The 54mm TB throttle stop arm hit a stiffening web on the IM and we were on a limited schedule so we went straight to the ITR TB. Now this isn't the best back to back test for a IM but the ITR TB isn't going to be the answer to clean up that low end torque dip from a header that's too big. That was up to the Skunk2 IM. This EG has brakes from an LS Integra along with the brake prop valve. The Integra prop valve protrudes further from the firewall than the stock Civic prop valve so there was a clearance issue. I had to relocated the prop valve lower on the firewall.

We lost the rpm signal on Run13 so I can't post the torque curve.

Run13: Skunk2 IM
Run10: Y8 IM



Here's another run with both hp and torque comparing the 2 IMs.



And for those who like STD numbers



I plan to run another header in the near future that is more suited for this engine.

Bottom line: The car is much more fun to drive with the extra power and the Skunk2 IM did help correct the mid range dip from a big tube header. I expect more gains in the mid range from the IM with the new header. You can also tell that this engine would easily make bigger whp numbers since torque wasn't really dropping off yet, but I'm running stock springs so 7000 rpms is just fine.

A better cam would also probably help to wake up the mid range. My goal is to have a great torque curve from 3000 to 6000 rpm.

 

Looks like somebody has been ptting in overtime on the dyno

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">Looks like somebody has been ptting in overtime on the dyno </TD></TR></TABLE>

Your turn is coming up

 

Great post dave! The work in the manifold/head looks to have been worth every penny!

 

Nice nice. When will people start kicking themselves for swapping out their D for a B?

 

hopefully never, we need to keep the prices for OEM D parts where they are.
although, they have gone up in the past few years.

nice work smsp! any chance you will wind it out at all to see where it peaks?


EDIT: noticed your on stock springs. good point that may not be a great idea.
m.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aquafina &raquo;</TD></TR><TR><TD CLASS="quote">Nice nice. When will people start kicking themselves for swapping out their D for a B?</TD></TR></TABLE>

never? lol


good stuff from smsp

 

nice.

you know you might crack 140 along with the midrange gains if you made a more appropriate header for this setup (header as mentioned)

someone needs to build something sick enough to handle that big tube header haha

if i didn't get into mini-z's i'd consider it....

79mm, crazy head, 12.5:1 and PowerFC.

 

looks nice...i bet its a blast to drive.

no vt@k?...joking

 

I love how you built a motor for your beater, isn't this in a 4 door also?

 

dave is that camshaft gude GORILLA SR (HCCS 10) or the GORILLA JR (HCCS 9) ??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jt-sport &raquo;</TD></TR><TR><TD CLASS="quote">dave is that camshaft gude GORILLA SR (HCCS 10) or the GORILLA JR (HCCS 9) ??
</TD></TR></TABLE>

Hell if I know. I think it's around .405-.410" lift.

Edit: Looking at their site it may be a Jr. but I don't remember seeing any markings on it. Plus I don't know how old it is.


Modified by SMSP at 10:35 PM 1/15/2006

 

Thats around 10.3-10.5mm of lift for you metric heads.

 

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

Hell if I know. I think it's around .405-.410" lift.

Edit: Looking at their site it may be a Jr. but I don't remember seeing any markings on it. Plus I don't know how old it is.


Modified by SMSP at 10:35 PM 1/15/2006</TD></TR></TABLE>

dave, call bill and see what kind of weird answer he will give you.

 

did you have a chance to mess around with the cam sprocket?? just curious, there might be a few ponies left

 

33whp gain is just ridiculous

 

Nice numbers. If you can get a deal on a crane 251-0012 cam i would try that. I really like mine and i think it would great for your midrange and top end also. They also have the larger one but i dont think it's as streetable. So what e.c.u. did you use and what did you tune with??

 

usually you have impressive setups and dynocharts, this one is not dave, sorry to say. would have expected alot more given bottom end rebuild, headwork and your custom exhaust.

in contrast, we did a stock VX (1.5L) shortblock with gude head and cams and adc header, tuned with CROME we were able to pull 135 and about 98tq, was a bit higher when we dyno'd in 2nd gear given stock VX tranny. The customer got a Bisimoto header and I had to retune on the street, added at least a good 5-9% more fuel tuning. I'm sure he;s low 140 by now.

suggest you go back to check leakage or something, cause it sounds low.

Greg

 

Well we are going to try a new header and then cam. I believe this is the cam that's in there now.

PART NO: HCCS09
DESCRIPTION: (GORILLA JR.) Pro Cam! Requires BULLFROG ECU
POWER BAND 5000 RPM. to 8600 RPM.
IDLE: Fair
SPECIFICATIONS: Intake LIFT - .409 DURATION - 261
Exhaust LIFT - .404 DURATION - 237


Idle: Fair, as long as it doesn't stall when you come to a light and disengage the clutch

I suspect this would be a mid 140s engine if we could spin it, as it is right now.

 

any pics of the car or engine?

 

props to a D-series all-moter project

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Philthy415 &raquo;</TD></TR><TR><TD CLASS="quote">any pics of the car or engine?</TD></TR></TABLE>

Car is a beater.

I do have 2 dyno runs but haven't figured out how to condense them so they can be hosted.

 

just curious but did you play with advancing cam timing to bring the it under that 8600 range on the gude cam thats in there now?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohc_boy &raquo;</TD></TR><TR><TD CLASS="quote">just curious but did you play with advancing cam timing to bring the it under that 8600 range on the gude cam thats in there now?</TD></TR></TABLE>

Yep. Below are all on the S2 IM.

Run11 2 retarded
Run12 4 retarded
run 13 2 advanced

it didn't like 4 advance or 6 advanced

 

so a lil advance helped. when are you gonna do the cam n header change? i'd like to see this put down some better numbers. i was guessing you'd be in the 140 range originally.