Author Topic: Micropolish transmission components? (Read 3123 times)

nico · « **on:** July 16, 2013, 02:46:16 PM »

I know it's a 250R website, but I trust the opinions of our members...

I've been researching going over 500cc with my latest 450R dune/drag project and have found numerous builders who highly recommend micropolishing the internal engine and transmission components, for stress relief and friction purposes. I've called and emailed several places that offer the micropolish (and cryo treatment) services, but the most common practices are basically a vibratory tumbler with several stages of ceramic and aluminum media. At least two of the shops finish with a mild chemical bath to make the parts really shine at the time of delivery (essentially a quick bath in wheel cleaner).

After studying the media blends available through Eastwood and a few other companies, I'm thinking about trying it at home. Has anyone ever experimented with micropolishing, or had it done?

Rupp250 · « **Reply #1 on:** July 16, 2013, 03:02:37 PM »

http://www.eastwood.com/18-lb-vibratory-tumbler-kit-inc-2-bowls-and-media.html

You thinking of something like this?
I am about to get some internal engine parts cryo'd. haven't looked into micro-polishing.

nico · « **Reply #2 on:** July 16, 2013, 03:25:49 PM »

Yes, but like many Eastwood products, it looks incredibly similar to the Harbor Freight variety... Vibratory Bowl.
The last tool I bought from Eastwood was a pneumatic sheetmetal (body) saw, that actually came in a Chicago Pneumatic box, with an Eastwood sticker on it.

I had originally checked into cryo treatment, but have heard good things about both processes. Good information here: http://www.performancemetal.net/

jamieg45 · « **Reply #3 on:** July 22, 2013, 10:45:32 PM »

The micro polish is a great way to go, it takes of the sharp edges on all of the components and the shifting is so much smoother and faster and less likely to break because it makes the parts just flow together. My engine guy does it and I have had some friends have it done to there race quads and holly wow is it unbelievable to ride and shift, you really have to remember what gear you are in it shifts that smooth. I haven't had it done yet because I don't have the extra cash, but when I do my next engine build I will have it done for sure

Kyle · « **Reply #4 on:** July 22, 2013, 11:48:43 PM »

what does it cost to have done. my motor is apart now. Who is a good person with quick turn around??