Looking for some stock and after flowbench numbers. Only one I seen were on an accord.

That has before and after. I will post later * not mine*

 

I love Cars, where are you!?!?!?

 

j35a8 on a SuperFlow 110 measures as follows 273 cfm at .450 lift in stock form on the intake side, and after porting at .450 lift it flows 303.93 cfm - so about a 30 cfm gain on the intake side at .450 lift. .400 lift was 272 cfm stock, and after porting flowed 297.3 - still a pretty good gain. Gains don't really start to be measurable until after .300 lift - I gained only 6 cfm at .300 lift after porting on the intake side.

Exhaust side flows 183 cfm at .450 lift, and 198 cfm after porting. Gains are good all around even at low lift as at .250 lift it flows 163 stock, and after porting at .250 it flows 179.


I have Gerzand's ported j32a3 heads as well (selling soon if anyone is interested) which on the same SuperFlow 110 bench I have measured at 275 cfm at .450 lift on the intake side - basically with porting they are very similar to a j35a8 in stock form. Sadly I don't have stock numbers for those because I bought them from him already ported and milled for 11.5:1 compression.

 

Do you guys have graph like these?

Intake:

Exhaust:


after


intake


exhaust

 

No, I just made up a bunch of numbers for the hell of it.

My shop has all the charts and will be part of my build thread when my car is done.

 

 

I'm a guy I like charts and graphs .

 

youre awful demanding on very specific information that only a few members have. Be lucky ILC has some sort of info for you and is willing to share. Maybe a simple thank you would be in order...

 

Hey gotta e demanding and straight forward to get shit done.

ILC thanks for your contribution.

Just wanted to know since everyone wants PnP heads but never get flow bench. How the hell do you know your not losing power? Giving up velocity for flow or vice versa. This was meant to give an idea to the whole community on what to expect, not just for myself.

And yes PnP varies between the people doing it. Unless its CNC.

Now with that being said where are you getting the heads flowed? I would like to contribute more data. I live in WV.

 

"everyone wants pnp heads but never get flow bench" - no, they just never get pnp'ed heads. The members on here in the 3G section that actually have had heads ported on their j32/j35 I can probably count on 1 hand.

I did it right and I had the 80% rule tested on a cylinder in a blown head before I even started touching the heads that were gonna be in my car. I knew I was going to make power before I even touched the heads that are in my car. I proved out all the numbers ahead of time actually paying to have a cylinder machined in an old head, and yea my shop has all the charts to prove it. That's called "doing it right" which most people just simply don't have the money to do, because it ain't cheap.

There are very few shops that have the fixtures for flowing the J-series heads. Most shops you go to will require you to pay them to make the fixtures and that's probably 500 bucks right there. Now the actual setup, flowbenching in stock form, then doing a test cylinder and flowing that? You've spent between 1k-1500 bucks on R&D total. Again, most people in the TL world either A) don't have the money, or B) Don't care enough to spend it because they aren't crazy like me.

It's not that most people don't get charts (not everyone does, to be sure) but it's moreso that we just don't have a high volume of people on here who have done head work to even take a test sample of.

My heads were flowed and machined at King Motorsports Unlimited in New Berlin, WI

 

 

Once again ILC TY for the info. I shot an email to King motorsports unlimited