hey guys i got my c5 head ported from Penner Racing Heads up here in canada, i would like to share my specs and engine setup.
head cfm numbers
Test Pressure(in.) 28

Valve Lift (in.) 100----200----300----400-----500

Test CFM-------88.9----155.1--214.2--261.2--283.1

that is on the intake side and heres the exhaust

valve lift (in.) 100----200-----300------400-----500

test cfm--------71.3---150.2---201.8---212.8--218.5

my engine setup is
sleeved GSR block 85mm
arias 14.0 forged pistons
an-r header
diy itbs
stock gsr crank and rods
skunk 2 stage 3 cams with buddy club valve train

i havent run the engine yet just waiting on a few parts.

 

Which valves were used?
Stock ITR?
did you bush the rods or are the pistons just pressed on?
ARP rod bolts at least?

 

14.0.0 compression

 

low lift #s look similar to my old ported head. around .300 though my head starts to gain ahead of your head. my head is also about 10cfm above your head at lift.
all in all not bad, its a decent flowing head and it will make power. maybe a slight change in the valve job and he will get more out of the head. valve jobs are the most important part of headwork.

 

im using stock itr valves, arp head studs, and arp rod bolts. i know there are more parts and work involved to make this a better setup but i think ill be happy with its results and next year keep improving. The pistons are a floating now.

 

Better numbers than my JG head, about 5 CFM below my Portflow head at each lift point. Should make good numbers tuned

 

i had some manifolds flowed on my setup aswell, my diy itbs, stock itr manifold and a skunk 2 pro series.

my itbs were 2 inch runners about 13.5 inches long at end of stacks, hayabusa throttle bodies and it flowed 261.2
the stock itr was 260.6 and the skunk2 pro was 264.6. this was after port, so there is improvment needed on my intake system but i will try my itbs out cause it flows the same as the itr and it will sound better. also the manifolds had just a stock b16 throttle body


Modified by AllMotr at 11:42 PM 5/7/2006

 

id encourage you to use the ITBs. although i havent had any experience with them myself my friend did a DIY ITB setup and it ran strong. plus it wasnt fully tuned and his driving is questionable. his setup consisted of stock GSR with DIY ITBs, RMF header and adjustment of the stock timing fuel maps.

 

take me to vtec...allmotr FTW

 

one more week and it will be out and i will have dyno numbers and a video of me at the track hopefully running 12s, i ahve raxle axles and bogarts for traction i was busting 1.7 60fts with a open diff so lets see what can happen on a lsd that was installed(itr).

 

from personal experience i dont think your 60's will improve much with the LSD, they didnt for me. what you will notice is lack of torque steer though. the only thing that made my 60s really drop besides slicks was launching really high.

 

lol and launching high allmotr does great

 

cant wait to hear/see this car in person. looks like penner did an great job with the porting, although your head did flow pretty darn well to begin with.

 

is this a semi street driven car or drag only?

you will make more power w/ the common plenum manifold but out of your power band the itbs will make more power and be a little more driveable as you won't have problems with intake reversion.

 

the car is a daily driver, well i hope it will cause thats what i will be using it for. Well 1.7 60fts is still good enuff for me.


also im figuring my power band will be from 6000-9500


Modified by AllMotr at 5:30 PM 5/12/2006

 

what fuel are you planning to run on with this setup? I'm thinking you are going to have to pull quite a bit of timing to get it to run decent on even 93 octane.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drift4jesus &raquo;</TD></TR><TR><TD CLASS="quote">what fuel are you planning to run on with this setup? I'm thinking you are going to have to pull quite a bit of timing to get it to run decent on even 93 octane.</TD></TR></TABLE>

we have 94 pump here

 

I don't believe the hype of 94 sunoco. I have personally had high comp motors run better on shell 93 than the 94 stuff but its essentially the same.

To get the most out of it at the track I'd put some 100 in there and tune accordingly.

 

we dont have sunoco here, we have mohawk and husky...its true 94 and it works great

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wpgcivic &raquo;</TD></TR><TR><TD CLASS="quote">we dont have sunoco here, we have mohawk and husky...its true 94 and it works great</TD></TR></TABLE>

yup its good ****! and every week on thursday its the price of regular :D:D:D

 

well the car now has 500kms and its running tip top, i am kinda surprised how well it runs on 14.0-1 compression, i did a compression test and i was seeing cyl.1 275 cyl.2 275, cyl.3 260, and cyl.4 275, i am very happy with how well the comp. test turned out. Just need to get it on the dyno for tunning and i will post the numbers it makes. also the skunk 2 stage 3 cams i find are one of the best street cams due too the low primaries and big vtec lobes.


Modified by AllMotr at 11:09 AM 7/5/2006

 

ITB's are a bit long eh?

 

HECKFORD SMASH!!!!.

 

can't wait to go cruisin in it once its tuned.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">ITB's are a bit long eh?</TD></TR></TABLE>

actually they sit half 1/4 of an inch lower then the itr manifold when they sidebyside on there flanges.