porting exhaust manifold

[Syn48]

Hi i was wondering if you could point me in the right direction for porting and polishing a exhaust manifold. I just recently got a 2g exhaust mani off a gst and i would liek to port it as a first step to starting my turbo project.

if you have any tips or advice i would greatly appreciate it!

[eclipsed4utoo]

take it to a local machine shop and let them have fun with it

[Syn48]

how much would i possibly looking at paying?

i kind of want to do it myself but if its not to expensive then i'll have someone else do it.

[eclipsed4utoo]

this is not a do-it-yourself type of job. you have to have special tools and a knowledge of what you are doing. this isnt like installing an intake.

you are probably looking at $200-$400. thats a complete guess. it will depend on how much the shop will charge you.

[eclipsed4utoo]

tools for porting a manifold:

The best tools for home porting are either an air operated die grinder or an electric die grinder, each with a 1/4-inch collect. My preference is an air operated die grinder, as it offers far greater rpm control through the regulating air pressure. If you take the electric die grinder route, make certain the grinder's maximum speed is 18,000-20,000 rpm. Too much rpm and the grinder can get away from you. You want to have complete control over your tool bits when working on the ports.

Yes, you will need a small variety of carbide bits. The best shape for all-around use is the conical or football shaped bit. Make sure that if you are working on aluminum you purchase an "open pitch" bit to avoid clogging. Expect to pay upwards of $30 for a long shank quality carbide bit. There are also economical kits available from Eastwood Company and Standard Abrasives that include a variety of abrasive stones, sanding rolls and mandrels. You can also purchase these tools at your local industrial hardware store.

Of course, if you are using an air-die grinder you will need an air compressor. Most available air compressors that can maintain 40 psi will be up to the task. Again, keeping the air pressure regulated enables better control of your porting equipment

[Syn48]

yea it probably isnt really a do it your self but i did find a kit online with all the proper sanding heads and it said to use an electric drill or a dremel tool of which i have both. 200-400 sounds a little bit too much for me especially since i wont see a huge gain in power. also do you think it is really worth it i am only paying 60 for the header so i dont see sense in paying a large amount of money when i could get a brand new header for the same price.

[eclipsed4utoo]

it might not be that much...i would just check with a local shop.

if the price is right, then yeah i think it would be worth it

[Syn48]

alright thanks for the help i will go check it out.