Port Polishing at Home??!!??!

[Luv My Volkswagen]

I had a friend in boot camp/ infantry school who was a former Harley Davidson mechanic. His mom was a dentist. He told me that he took some of her old dentist tools (teeth polishing tool?) and used it to polish his Harley. I don't know what/ where you would polish on a V-Twin, but he said that he made significant power gains with this technique. I was wondering if anyone on this forum has any similar experience, maybe using a dremel tool or something.

[89VWdieselGolf]

ive done with with carbides and air tools... very easy if you know what your doing

[Luv My Volkswagen]

Do you know where I can find more general information on this? I'm interested but I'm a total noob to this kind of thing.

[KTZed]

http://www.sa-motorsports.com/diyport.aspx

http://www.sawbird.com/flex_shafts.htm

A well respected guy from my other car world uses a flex shaft and carbide burr hooked up to a...washing machine motor... :shock: Apparently its got lots of torque and is nice and quiet.

[commuter boy]

Anyone can hack away at a casting, but to do it in a fashion that makes more power is a true black art.

In the motorcycle world there's tons of cases where the ports were actually built up before being shaped to get ideal airflow.  Just running in with a dremel or Fordom and smoothing down the casting flash won't necessarily get you more HP.

[AdAm84]

I had an old school engine builder teach me how to do mild porting on SBC heads. There is a fairly large gain to be had by matching the manifold and blending the bowls. He said that it was mostly in the mid-range. I can't verify this since he doesn't have a flow bench. But, i did some nild port work on my jeep and it made a huge difference(along with the comp cam)