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Diy Port And Polish

humz

By humz,
in Engines & Forced Induction

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humz Proficient

humz

Posted
Posted

does anyone have solid info or a DIY tutorial on port and polishing?

what tools you need? recomendations? do's, dont's? etc???

not thinking of oversizing ports etc or polishing to a mirror finish, but just a nice clean up of cash marks and blemishes.

i was thinking of porting in and ex side of head, intake manifold runners, TB compressor housing, ex manifold.

BTW: i dont wona hear the answer leave it to the pros, so please pussy foot around in your own back yard, i wona tear mine up hahah

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Travis Bickle Collaborator

Travis Bickle

Posted
Posted
does anyone have solid info or a DIY tutorial on port and polishing?

what tools you need? recomendations? do's, dont's? etc???

not thinking of oversizing ports etc or polishing to a mirror finish, but just a nice clean up of cash marks and blemishes.

i was thinking of porting in and ex side of head, intake manifold runners, TB compressor housing, ex manifold.

BTW: i dont wona hear the answer leave it to the pros, so please pussy foot around in your own back yard, i wona tear mine up hahah

DIY headwork is such a touchy subject on the net because the people who know, want to keep their trade a secret for financial reasons, so they can still charge 1800 dollars a head. but in their defense, there is a lot more to it then just grinding your ports larger. personally i do not know much more than gasket matching, and i do know that 75% of headwork is a real good valvejob.

so i guess my answer is gasket match your manifolds and head it with air tools, then drop it off at a machine shop for a 5angle or radius cut job and a hot tanking. maybe move the splitter back and sharpen it a tad.

i played with hondas for a long time and i know that the top guys all widen the floors but i dont know enough about an RB head and how it flows to say the same.

M E S O G L E A Enthusiast

M E S O G L E A

Posted
Posted

Its not really difficult if you have the right tools, patience and time.

I cleaned up the short side radius, port bowl/throat and removed casting flash. The

intakes were not bad, the exhaust was the most restrictive. The gasket matching was great from the factory, so I didn't touch it.

If you use carbide burs, make sure they are for aluminum and be prepared to spend at least 12 hours doing this.

Standard Abrasives makes a kit just for this operation. I used two of them. They also have a DIY guide.

http://www.sa-motorsports.com/diyport.aspx

tacker Mentor

tacker

Posted
Posted

i posted a while ago about this and some cut away pics of what not to do as i stuffed a good head going to far.

I will see if i can find it again.

http://www.skylinesaustralia.com/forums/Po...p;hl=rb+26+head

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