im thinking of going NA for now...without getting too serious about NA...thinking of getting port and polish for my NA gsr....just wondering will port and polish also good for turbo later....

 

ttt....suggestion please

 

the head that is on my turbo 4 civic si race car right now is a head that came off my all motor vx hatchback

when we were putting the car together it was the most convenient head to use

has the Ed's racing head slight port and polish job on it

so far we have made 734 hp with this head on the car - standard size valves, just a clean up job p&p really

so to answer your question i would say yes, a NA p&p head will still work great on a turbo application

james

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by James@GSCMotorsports.com &raquo;</TD></TR><TR><TD CLASS="quote">the head that is on my turbo 4 civic si race car right now is a head that came off my all motor vx hatchback
when we were putting the car together it was the most convenient head to use
has the Ed's racing head slight port and polish job on it
so far we have made 734 hp with this head on the car - standard size valves, just a clean up job p&p really
so to answer your question i would say yes, a NA p&p head will still work great on a turbo application

james</TD></TR></TABLE>

wooo scary number u got there (734)...nice to know p&p work well for turbo application...thanx for the input man...alot

 

Ideally the Port work should be tailored to the application. port work for a street turbo application and a street N/A application will vary. Not to say that either will not net gains, but may not be optimized for the other application. For instance, a turbo port job will have different bowl work and typically less work on the exhaust ports to promote high exhaust gas temps and velocities to spool turbo faster.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BryanPendleton &raquo;</TD></TR><TR><TD CLASS="quote">Ideally the Port work should be tailored to the application. port work for a street turbo application and a street N/A application will vary. Not to say that either will not net gains, but may not be optimized for the other application. For instance, a turbo port job will have different bowl work and typically less work on the exhaust ports to promote high exhaust gas temps and velocities to spool turbo faster. </TD></TR></TABLE>

wooo really....hmm that's something i must know....so if i p&p that meant for turbo application it wouldn't hard my NA application too much right....i mean may or maynot gain as much if you specific p&p for NA application. Furthermore, it will help for NA a little and will not hurt it right...in some way

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BryanPendleton &raquo;</TD></TR><TR><TD CLASS="quote">Ideally the Port work should be tailored to the application. port work for a street turbo application and a street N/A application will vary. Not to say that either will not net gains, but may not be optimized for the other application. For instance, a turbo port job will have different bowl work and typically less work on the exhaust ports to promote high exhaust gas temps and velocities to spool turbo faster. </TD></TR></TABLE>
I don't necessarily agree that a turbo head has less work on the exhaust port.For a street car maybe,but on a race engine it has so much cyl pressure that velocity isn't the main problem,also w/the huge volume of spent gasses you have to open up the port to get it out of the cyl in time to get the int flowing again.But yes they are different from NA to FI.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ed’s Racing Heads &raquo;</TD></TR><TR><TD CLASS="quote">
I don't necessarily agree that a turbo head has less work on the exhaust port.For a street car maybe,but on a race engine it has so much cyl pressure that velocity isn't the main problem,also w/the huge volume of spent gasses you have to open up the port to get it out of the cyl in time to get the int flowing again.But yes they are different from NA to FI. </TD></TR></TABLE>

what are the differences that you were talking about..or anyone know

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeegsr &raquo;</TD></TR><TR><TD CLASS="quote">

what are the differences that you were talking about..or anyone know</TD></TR></TABLE>

There is no accepted practice. Every head porter has there own experience, knowledge and practices. You are not going to see any agreement in this issue because you will have die-hards from all sides.

The key is to know what you want as the customer wants, and that the head porter will listen, know what questions to ask to determine the customers needs and wants, and then be able to optimize that head for that application.