8V intake manifold porting and polishing

[Mrbubblehead]

8V intake manifold porting and polishing...from what I've seen you have to cut the top of the manifold off to reach the upper part of the runners. Who here knows how to weld aluminum or were can i go where they wont charge me an arm or a leg?

[Rennwagen1]

I used this drill adapter that was about 10" long and you could load emery cloth on it, stick it in the hole, and polish it up.

In reality, are you really going to get the money it would cost to have it welded back up, returned to you in HP? I did mine for the fun of it, on the cheap, did it help? who knows? Was it shiny, yup!

I did port match it by marking the runner outlets with a marker and gasket, and worked my way removing material as far up the runner as I could, then polished it up. It may have helped. But when you are dealing with 90hp, a 2% increase is hard to feel on the butt-dyno...

[Mrbubblehead]

From what i read, stock, all of the runners flow at a different rate. If you port them to the point were they flow better and at the same rate it can get up to 9% hp. got most of my port and polish info from vortex and http://scientificrabbit.com/node/2 . I am building a flow bench to test the manifold and get it to that point.

[kompressorgolf]

nice, i might have to come check this out! sounds awesome, way to do things right Tek!

[Rennwagen1]

Oh yeah, I also used a Fox mani, (with a a specific part #)which is supposed to be the best flowing 1.8 mani they made. But I heard it on the internets, so make of that what you will. I just did it for fun. It definitely wasn't any slower.