Polish or not Polish!!!???

[400hp_project]

Hi

I'm going to do some upgrades in my S2 like chage k24 turbo for a k26, chage intake an d exhaust manifolds for RS2, with its i have a question is a good idea to polish the intake and exhaust manifolds to obtein more power? But if i do i'll lost power at low rpm?


Thanks for all

[Jon441cc]

Not to sure how you could polish the Intake & exhaust manifolds
but having the exhaust ports polished to a mirror finish will Help :mischeif:

http://www.s2forum.com/forum/showthread.php?t=3000&highlight=porting+head

[AJ ES]

Any good quality porting work done by hand or cnc machine should not be polished in the intake port. The exhaust should be smooth to the touch but a mirror finish will not exist after a very short amount of engine use. The port walls will have a matt black apperance therefor no mirror finish.

[Faheemo]

Ceramic coat the exhaust manifold, helps with heat and flows gases better.

[AJ ES]

Why stop with the exhaust . There are coatings for the entire engine, from thermal coatings to friction coatings. Try www.techlinecoatings.com they can supply coatings for you to appliy yourself ( just make sure you have a good oven and the wife dosen't find out). They can also coat things for you , just make sure you clean everything first.

[MidnightBlueS2]

Why stop with the exhaust . There are coatings for the entire engine, from thermal coatings to friction coatings. Try www.techlinecoatings.com they can supply coatings for you to appliy yourself ( just make sure you have a good oven and the wife dosen't find out). They can also coat things for you , just make sure you clean everything first.

Great link !

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