Intake/Head Porting

Post by **racer12306** » Sun Oct 18, 2009 10:16 pm

Just wondering if anyone who has ported a head or intake, beyond just the normal cleanup, has ever put these parts on a flow bench to match the flow on all cylinders?

hul kogan · Post by **hul kogan** » Mon Oct 19, 2009 9:51 am

Just normal cleanup and port match over here, but I would also be interested to see if anyone has spent some time on the flow bench.

Mat · Post by **Mat** » Mon Oct 19, 2009 10:27 am

No, flowbenching is spendy for us thrifty bastards.
But if you want to talk texturing, direction manipulation, and velocity theory, I can help with that.

Post by **racer12306** » Mon Oct 19, 2009 10:31 am

Only issue I see with not flowing these parts is a mismatch between cylinders.

Mat · Post by **Mat** » Mon Oct 19, 2009 10:35 am

If you're that worried about it, just be consistent with your porting method (start on the right, move to the left, etc) and record the amount of time it takes for each runner/port etc. That will get you close enough.

Post by **racer12306** » Mon Oct 19, 2009 10:54 am

There is a DIY flowbench on one of the forums i've been on, I think its GarageJournal, that I think would be neat to make.

Post by **occasional demons** » Mon Oct 19, 2009 11:55 am

racer12306 wrote:Only issue I see with not flowing these parts is a mismatch between cylinders.

Considering how the as cast ports look, you really can't do much worse.

IDK if I would use time as a measure, based on what I just said.

Possibly a better way, would be to use some kind of template, and measure the fluid volume of the port, with the valves installed.