Cleaning HF mani
 

I just got a free HF exhaust mani from my friend.
The runners are really dirty and have lot of gunk in it.
I was wondering what is the best way to clean it out??

Re: Cleaning HF mani
 

I just took my dremel and lightly stuck it in all the runners and swirled it around a bit, doesn't take much pressure to remove the carbon deposits from inside. Of course I port matched the manifold to the exhaust gasket while I was at it.

Re: Cleaning HF mani
 

dremel or just carb clean the ---- out of it

Re: Cleaning HF mani
 

Sandblast it.

Re: Cleaning HF mani
 

purple power, available at a local auto store. it turned this http://img207.echo.cx/img207/6634/dsc019665yq.jpg
into this
http://img163.echo.cx/img163/1908/dsc019633sv.jpg

Re: Cleaning HF mani
 

Or you can just let that carb cleaner soak in for 30 mins, cleaned off my pistons real good and everything in the head. including the multilayer carbon build up you get on exhausts ports. Key is spray to soak let sit and spray some more carb cleaner and keep repeating.

Re: Cleaning HF mani
 

OOOH, I really wish I could find that stuff in my area!

Re: Cleaning HF mani
 

That's what I used to clean mine.

Re: Cleaning HF mani