Targetnut

Does anyone have close-up pics that show the detail of a ported exhaust port on a 22RE head.

I'm specificly looking for a picture showing how the little hump in the side of the port adjacent to the coolant passage was treated.

Of course any pics would be appreciated (I like pictures)

dcg9381

DOA port work:

http://lakebox.dnsalias.com/photos/1...tportwork2.jpg

http://lakebox.dnsalias.com/photos/1...stportwork.jpg

http://lakebox.dnsalias.com/photos/1...tportwork3.jpg

http://lakebox.dnsalias.com/photos/1.../exhports5.jpg

Targetnut

Thanks.

If anyone has others, I'd certainly be interested in seeing those as well

dcg9381

Flow test on this head:
218cfm @ .425/16" water 103 F
200cfm @ .425/16" water 106 F

Targetnut

I'm working on a rudementary flow bench so that I can measure the flow on the ports and make sure that i am making them better and that they are even. I don't expect to be able to determine exact flow numbers only relative flows

Am I to expect to see a nearly 10% flow difference based on a difference of 3deg F?

I know there would be a difference but I would have never have dreamed it would be so large.