Originally Posted by
5speed 
Very nice work, but beside all the pretty pictures do you have any concrete numbers to back up your opinion on the port velocity.
What kind of speed are you seeing with the pilot probe?
What's the cfm before and after porting?
Any dyno numbers?
Remember the low intake velocity idea was based on most of the VEs making peak power around 7,500. Of course the port velocity will be higher if you spin it up to 9,000. What was too slow for 7,500 is now too fast for 9,000.
I would also like HKS Danny to chime on this. His answers are always interesting.
I can can see why the velocity theory has come up. As at high rpm the ex will simply not keep up with the intake.
Dyno number will be a while. I will post up flow data when the head is 100% done. There will be before and after.
Originally Posted by
mirrortints Awaiting post on exhaust ports...LOL
After you mentioned the exhaust ports in another thread, I checked mine out while the head was off. WOW! Intake (for being stock) seems pretty smooth, exhaust on the other hand...YIKES!
Yeah they are just terrible. A lot of time went into reshaping them a lot more than the pics will be able to show.
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