RexSeven
RexSeven UberDork
2/21/14 9:10 p.m.

I'm sure some folks here have done their own exhaust manifold porting. Do you have any pictures of your work? What tools and techniques did you use?

Zomby Woof
Zomby Woof PowerDork
2/21/14 9:17 p.m.

Die grinder, coarse carbide burr and this

http://grassrootsmotorsports.com/forum/tech-tips/make-a-honing-and-polishing-tool/75419/page1/

Paul_VR6
Paul_VR6 HalfDork
2/22/14 4:15 p.m.

I use long shank carbides with a quick high grit paper to finish.

ronbros
ronbros Reader
2/22/14 5:20 p.m.

interesting subject;porting and polishing! question came up on another forum, how much increase % wise,would P/Ping a stock engine, no other mods?

DaveEstey
DaveEstey UberDork
2/22/14 5:39 p.m.

it doesn't work like that.

Porting a rotary can mean a 100% increase in power.

DrBoost
DrBoost PowerDork
2/22/14 5:50 p.m.

I used a angle grinder with carbide burrs for iron, for aluminum I'd start with burrs and move to a series of sandpaper rolls, flap paddles, and sand paper.
I also got a pencil-type grinder, similar to a dremmel but air powered.

You'll need to log in to post.

Our Preferred Partners
YxT1CaJMYD61BJMX2Yrf5Xem5CUIuNqiQpbkuWG3gJ9dvZD2yCvsiuzpQPmcS6Ka