compression is far from the only reason.

their heads outflow most any other 4cyl head by a good margin.

 

That has to be the most retarded thing I've ever heard.

My Evo IX which has a completely stock long block from head to toe and is making 330whp/326wtq @ ~24psi on stock turbo. You're trying to tell me (in an imaginary world) that I could swap in 10:1 pistons without changing anything else and then drop my boost down to 19 psi and make the same power? So you're saying that the much more advanced head of the Honda has nothing to do with the fact that they can make more power on lower boost?

-Jalal

 

Thank you, sir.

I'd like to add that the AMS CNC Head for the 4g63 flows 277 CFM Intake. OEM K20A2 heads flow in the 290 CFM range on the intake side. Fully ported K-series heads are flowing well over 300 CFM.

About a year ago, I was Englishtown for a big drag event and Head Games happened to be there. The guys name slips my mind, but I asked him how the new 4B11 head compares to the K-series head. He told me that the 4B11 is right around where the old Honda B-series heads are. Basically, they don't come close.

This isn't about Honda being better, this is about the ignorant comments 4doorstreetbike is making.

:facepalm:

-Jalal

 

Honda heads simply were made for N/A use. They do not have have a prettier torque curve when turbocharged compared to a 4g63 which just stomps it in the spool/ torque department.

Higher velocity ports give more torque in turbocharged cars. and spool the turbo faster. The size of ports and cam duration was both made smaller on the 4b11. Its not so much they "flow" better. its the velocity that is ruling king.

Honda heads do outflow mitsu heads on a flow bench. they do make better peak power at very high rpms. but the over all power band of a 4g63 is leaps and bounds better if you know how to look at a power graph. the honda also has no AWD platform to make use of meaty torque curve so their power bands actually work well for FWD use.

Honda heads shame a mitsu head? I beg to differ. A Mitsu head would suck on N/A car. The Honda head would shame it in that case. Mitsu head are way better for their intended use.

 

Several years back I let a local Honda guy that built 8 and 9 second hondas drive my high 9 second Mitsu. He was shocked at how much fun my car was. I think the exact quote was. "my car may be as fast or faster but holy shiat my car has no torque!" one week later he had his first AWD talon. he failed miserably at building it and stuck with hondas. But I will never forget his reaction when he drove my car. He was making around 375tq in his 9 flat car. I was making 550tq in my 10 flat car. There was no comparison of the fun factor on the street with TQ and AWD.

 

We won't disagree, because neither one of us have stated anything incorrect. Everything I said was in response to what 4doorstreetbike said.
They can absolutely demonstrate what the OP is talking about.

-Jalal

 

I once used a redneck dump.

It's a stock O2 housing with a cut out on the WG runner with a peice welded to seal the turbine outlet and no gasket. Basically the WG flapper could be seen from engine bay. Using flexible woven carbon-graphite to channel the exhaust out the hood vent and a barriered intake to keep IAT logs no more than ambient, the system actually worked good and sounded rather interesting. The only drawback was carbon monoxide poisoning and a filthy radiator.

Anyhow, the sheet that directed fumes out the hood broke so I had to use aluminum foil as a temp fix. It worked until I spun in first hittting rev limit blasting fireballs out the dump, tiny peices of foil went everywhere out the vent and I melted my wire to the pwr steering pump.

I have the part for sale if anyone would like it.

 

I'm sorry for resurecting an old thread but this needed to be read again. I almost fell off my chair reading this!!!!!!