My cylinder head results (now with pics)

[Tun_x]

For those involved I want to say thanks .. the results speak for them selves .. a little back ground on the project …I am a die hard 7m fan and decided to do a cylinder head and approach it with every resource that I have available including funding … there were no shortcuts taken everything was done with state of the art equipment and parts.. The head was done with the state mind that drivability and peak power were the end goal, while sacrificing little or no bottom end performance… I want to thank Cleggs machine and in particularly Robert Jackson @ Monster performance for lending his expertise ..
This far from a " run of the mill " port job

All testing was done on the same day @ 28lbs



7m stock as tested


intake exhaust


lift " cfm lift " cfm
.100" 84.3 .100" 83.0
.200" 146.1 .200" 122.9
.300" 177.4 .300" 134.7
.350" 180.5 .350" 139.8
.400" 182.4
.450" 181.7


7m custom


intake exhaust

lift " cfm lift" cfm
.100" 84.8 .100" 86.0
.200" 149.3 .200" 138.5
.300" 204.1 .300" 160.7
.350" 223.7 .350" 167.1
.400" 235.7 .400" 172.0
.450" 246.0 .450" 175.4



Thanks to all who helped ....:biglaugh:


Jason Kemp

 

[jdub]

Nice...big difference above .2" lift.

What cams/spec?

 

[figgie]

nice flow numbers.

 

[SuperRunner]

On the intake side, you couldn't ask for too much better from this head(although there is ALWAYS room for improvement)

I was definatly hoping to see a little more improvement on the exhaust side. Since the soul purpous of the motor is for race, we were looking for at least 80% E/I ratio, upwards of 85%. The results we got were about 75%. There is still quite a bit of material that can be removed from the exhaust side.

During this next year, we will be doing some extensive testing on some very radical and EXTREME port work. I see absolutly no reason why the 7M head can't flow 280cfm for a race motor, with some drivabiltly factor still in mind.

 

[Tun_x]

Nice...big difference above .2" lift.

What cams/spec?

Bc 280's

http://www.briancrower.com/makes/toyota/7mgte.shtml

 

[Slow66]

Nicely done.

I picked up my head off of my friend Kevin (MelloYello as some might remember him on SF) and he had it ported by Headgames but he lost the flowsheets. I'd be interested to see what my junk flows...

I'm gonna send it over to you Jason

 

[Tun_x]

Nicely done.

I picked up my head off of my friend Kevin (MelloYello as some might remember him on SF) and he had it ported by Headgames but he lost the flowsheets. I'd be interested to see what my junk flows...

I'm gonna send it over to you Jason

send it and we will flow test it ...

 

[Tun_x]

send it and we will flow test it ...

you gonna send it?