i have a quick question. how much hp do you all think a port and polished head will give a otherwise slightly modified engine? jdm intake manifold, spoon chip, header, and intake being the other mods. Thanks for your help.

 

probably 10~

 

i was talking to my local machinist the other day about this and he said that he did one honda head (port and polish) and spend many hours ($1200) and he said he only gained 1 cfm on the flow bench.. The only thing is im not sure what head it was ..get a vlave job instead is my input

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mademan2723 &raquo;</TD></TR><TR><TD CLASS="quote">i was talking to my local machinist the other day about this and he said that he did one honda head (port and polish) and spend many hours ($1200) and he said he only gained 1 cfm on the flow bench.. The only thing is im not sure what head it was ..get a vlave job instead is my input</TD></TR></TABLE>


thats why you go to the pros that have done it b 4....

http://www.portflow.com just to mention one

cause if you dont you are just a guinea pig and you wont b happy.

 

i recommend http://www.portflow.com they did my head nice work. take it to the pros

 

well actually i did go to the pros, my machinest does motor work for top racers around the area. I looked at the portflow site and its says some stuff but i didnt see any flow bench tests of any head just ported and polished since that was the original question. Angle vlave jobs are a different story..