My go at head porting...
#32
Re: My go at head porting...
i didn't read every post on here but i looked at your pics and i can tell you now that you can definetly flatten out the bottom of the port floors, and match the gasket on the exh side and just smooth the hell out of it. the intake you need to keep it rough. trust me i've ported dozens of heads and the way i just described yielded the greatest gains..........we're talking butt loads of low end torque gained and 500-900rpm spool time decrease. just a little advice it looks damn good though
oh btw some guys chop the valve guides flush with the port roof to reduce turbulence...which is also proven to work i don't know how crazy you wanna get with it though
oh btw some guys chop the valve guides flush with the port roof to reduce turbulence...which is also proven to work i don't know how crazy you wanna get with it though
#33
Re: My go at head porting...
Originally Posted by sohcpwr
actually when you have 20psi of pressure in the intake ports, that does a pretty good job of mixing the air and fuel :1 The ports are very shiny, not scratched at all, babys *** smooth. the pics were taken with a weak digi cam and no light. anyway, well find out soon enough just how much it helped. full boost before was around 4500
#36
Re: My go at head porting...
that is sick. I didnt have the intermediate cross buff to get them that shiny.
standard abrasives porting guide is for old school v8's with carbed motors that need the rough intake to atomize the air. Ask anyone with a high output turbo kit and they will have their intakes polished as well. Grinding the valve guide flush is good for ohc motors that do not have rockers like hondas. rockers put alot of side load on the valve and the guide is needed to keep it steady.
standard abrasives porting guide is for old school v8's with carbed motors that need the rough intake to atomize the air. Ask anyone with a high output turbo kit and they will have their intakes polished as well. Grinding the valve guide flush is good for ohc motors that do not have rockers like hondas. rockers put alot of side load on the valve and the guide is needed to keep it steady.
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