Portflow reworked IB head makes 244 HP on the Dynapack thru the muffler!
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From: Southern California, U.S.A.
Portflow reworked IB head makes 244 HP on the Dynapack thru the muffler!
I had the ITR head off to do some flow testing and for Tom to see if he could squeeze any more flow from the head. Import Builders did the head for me a few months back, but I never flow tested it before. Tom at Portflow managed to get another 5-7 CFM at the higher lift points on the intake side to the tune of 308.5CFM@0.550" of lift 
While the IB head was off I put a head that JG did for me on the car, but not before Tom flowed it as well. The JG head managed only 280.3CFM@0.550" of lift on the intake side.
The IB head has been back on the car for a couple of weeks and I finally found some time today to get the thing on the dyno. I was mildly surprised when the car was able to put down 244.2 WHP (hub) and 165.7 ft.-lbs. of torque on Shawn Church's Dynapack. I had previously tuned the motor with the JG head installed, open header, and managed only 235.4 WHP and 161.6 ft.-lbs. of torque. Same motor, same cams, same intake, and both configurations tuned to a tee with Hondata S300. My hat is off to Import Builders for a great port job and to Tom Fujita at Portflow for making a great head even better
After I finished tuning the car with the Magic intake, I slapped the AEM CAI that is normally on the car for daily driving back on. I made a few passes to clean up the A/F and the motor was able to put down 240.8 WHP and 162.5 ft.-lbs. of torque
I plan on doing a little more testing with this motor so stay tuned
While the IB head was off I put a head that JG did for me on the car, but not before Tom flowed it as well. The JG head managed only 280.3CFM@0.550" of lift on the intake side.
The IB head has been back on the car for a couple of weeks and I finally found some time today to get the thing on the dyno. I was mildly surprised when the car was able to put down 244.2 WHP (hub) and 165.7 ft.-lbs. of torque on Shawn Church's Dynapack. I had previously tuned the motor with the JG head installed, open header, and managed only 235.4 WHP and 161.6 ft.-lbs. of torque. Same motor, same cams, same intake, and both configurations tuned to a tee with Hondata S300. My hat is off to Import Builders for a great port job and to Tom Fujita at Portflow for making a great head even better
After I finished tuning the car with the Magic intake, I slapped the AEM CAI that is normally on the car for daily driving back on. I made a few passes to clean up the A/F and the motor was able to put down 240.8 WHP and 162.5 ft.-lbs. of torque
I plan on doing a little more testing with this motor so stay tuned
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From: Southern California, U.S.A.
Re: (LsVtec92Hatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch »</TD></TR><TR><TD CLASS="quote">How does it feel?</TD></TR></TABLE>
Like a 2 liter monster
BTW, for those who do not already know, this motor is a 1.8.
81.5mm bore and stock 87.2mm ITR crank
Like a 2 liter monster
BTW, for those who do not already know, this motor is a 1.8.
81.5mm bore and stock 87.2mm ITR crank
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From: Clairemont, CA, USA
Re: (b19coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">
Like a 2 liter monster
BTW, for those who do not already know, this motor is a 1.8.
81.5mm bore and stock 87.2mm ITR crank </TD></TR></TABLE>
mine feels like a 2 liter monster.......oh wait it is...lol
Like a 2 liter monster
BTW, for those who do not already know, this motor is a 1.8.
81.5mm bore and stock 87.2mm ITR crank
</TD></TR></TABLE>mine feels like a 2 liter monster.......oh wait it is...lol
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Thread Starter
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From: Southern California, U.S.A.
Re: (pulpdeem)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pulpdeem »</TD></TR><TR><TD CLASS="quote">streetable daily driver motor?</TD></TR></TABLE>
Very streetable-it runs like stock, until you push the go-fast button.
Very streetable-it runs like stock, until you push the go-fast button.
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From: So Cal
Re: (b19coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">
Very streetable-it runs like stock, until you push the go-fast button.</TD></TR></TABLE>
you have nitrous?
Very streetable-it runs like stock, until you push the go-fast button.</TD></TR></TABLE>
you have nitrous?
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From: Toronto, On, Canada
Re: Portflow reworked IB head makes 244 HP on the Dynapack thru the muffler! (Michael Delaney)
the JG head tops out 280 cfm @ 28" with 0.55 lift which is about 240 whp if you presume a 15% drivetrain loss.
The reworked IB head tops out at 268 whp.
the flow volume differences appear to be the same at 0.45 and 0.5 lift where most of us "street people" have cams.
what cams are you running?
The reworked IB head tops out at 268 whp.
the flow volume differences appear to be the same at 0.45 and 0.5 lift where most of us "street people" have cams.
what cams are you running?
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Re: Portflow reworked IB head makes 244 HP on the Dynapack thru the muffler! (Michael Delaney)
I'm sorry .And I want to say this as nice as possible, But I call BS.First How did you get a .550 cam to even fit.The guides would have to be cut all the way off.So the retainers would clear .And the rocker pads will come off the lobe too.And why would your motor make so much more power than other people that have more comp. Way bigger bore And A way bigger stroke.With the same bolt ons as you?Please tell me your secret.We can make millions.
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From: So Cal
Easy Randy. He hasnt even said he runs .550" lift/ Second of all, this is on a dynapack dyno which reads about 8-10hp higher than a standard dynojet 248c.
Delaney,tuan or whatever, why did you edit your original post?
Modified by LsVtec92Hatch at 5:41 PM 2/12/2006
Delaney,tuan or whatever, why did you edit your original post?
Modified by LsVtec92Hatch at 5:41 PM 2/12/2006
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Re: (LsVtec92Hatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch »</TD></TR><TR><TD CLASS="quote">Easy Randy. He hasnt even said he runs .550" lift/ Second of all, this is on a dynapack dyno which reads about 8-10% higher than a standard dynojet 248c.
Delaney,tuan or whatever, why did you edit your original post?</TD></TR></TABLE>
I'm not being a smart ***. But why would you flow a head at a lift number that you will never see.What do both heads flow with the same lift as the cam he will be using.Anyway the HP just seems a little high.Maybe I'm just used to dynojet #s
Delaney,tuan or whatever, why did you edit your original post?</TD></TR></TABLE>
I'm not being a smart ***. But why would you flow a head at a lift number that you will never see.What do both heads flow with the same lift as the cam he will be using.Anyway the HP just seems a little high.Maybe I'm just used to dynojet #s
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From: Toronto, On, Canada
Re: (RMF)
my original post was about the flow pressure differences but he corrected it to 28 in. vacuum. I just couldn't read the flow pressures for 0.5-0.55 in.
given that it's corrected to standard 28 test pressure I deleted the post.
I did say that 155 tq from 6-8K is exceptional for 1.8L NA. I've never seen a 1.8L make that. But I thought Todd was running 1.9L...anyway...he told us the bore and stroke.
after looking at the flowbench sheet a little closer I found the test pressures at around the same 27.9 ish for both the JG and Portflow head.
Aren't rollercams at 13-14mm (0.51-0.55 in.) lift?
I don't know what cams he's running. That's why I'm asking.
at 0.5 in. lift he's running 271 and 299 cfm which translates to a potential 236-260 whp with 15% drivetrain losses.
looks to be in the plausible ballpark.
given that it's corrected to standard 28 test pressure I deleted the post.
I did say that 155 tq from 6-8K is exceptional for 1.8L NA. I've never seen a 1.8L make that. But I thought Todd was running 1.9L...anyway...he told us the bore and stroke.
after looking at the flowbench sheet a little closer I found the test pressures at around the same 27.9 ish for both the JG and Portflow head.
Aren't rollercams at 13-14mm (0.51-0.55 in.) lift?
I don't know what cams he's running. That's why I'm asking.
at 0.5 in. lift he's running 271 and 299 cfm which translates to a potential 236-260 whp with 15% drivetrain losses.
looks to be in the plausible ballpark.
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From: San Diego
Re: (RMF)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF »</TD></TR><TR><TD CLASS="quote">
But why would you flow a head at a lift number that you will never see.</TD></TR></TABLE>
Thats what i was wondering. I think its for the same reason that people post dynapack graphs
But why would you flow a head at a lift number that you will never see.</TD></TR></TABLE>
Thats what i was wondering. I think its for the same reason that people post dynapack graphs