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Posted by Elmo Hayride
 - December 04, 2014, 17:02:43 PM

It sure is nice to have the people in this forum to assist when there's a question CDNRatMan.

Troll, we (machinist and I) measured the wear and clearance and everything is in spec (0.06604mm piston/cyl clearance).

Posted by CDNRatMan
 - December 04, 2014, 14:51:42 PM

  I had replaced the front fork oil in bikes before, never have I done as much work on a bike as I have on the Drifter. Reason is because I have confidence in my skill set to a certain point, I know when I am outside my comfort zone that help is now an e mail away or forum distance. I have rebuilt the complete front end of my bike, and GB and Troll were more then readily available to answer my questions, not sure if they wanted to but they did. The info on this forum is outstanding in learning from and to gather ideas and tips. In return when I did my rear shock I documented it all and took plenty of pictures and notes and posted what I did so the next person can get the idea.

Posted by Elmo Hayride
 - December 04, 2014, 11:26:24 AM

Granted, some people have little to no mechanical skills. If one is willing to read, absorb, and experience I truly believe just about anyone can fix their bike. Most of the work is equation exact and well documented.

Posted by mittico68
 - December 04, 2014, 04:46:25 AM
Quote from: Elmo Hayride on December 03, 2014, 11:06:21 AM

mittico68, to be fair, my knowledge about mechanics comes from reading and trying.

If only it were an equation exact (reading & proving = ability), I guess we all should be able to do everything...
But there are so many variables that make the difference between a good mechanic and a bad theoretical! :D

Posted by Troll
 - December 03, 2014, 19:14:37 PM

And so...it begins!

Posted by Elmo Hayride
 - December 03, 2014, 16:58:21 PM

Here's the 1st shipment of parts I got today.

Posted by Elmo Hayride
 - December 03, 2014, 14:11:08 PM

That's great Troll, thank you for your input. I see that the factory provides over sized pistons and rings for that very issue. I'll measure it to see where I'm at.

Posted by Troll
 - December 03, 2014, 13:44:05 PM

The fit of the piston thrust skirt is VERY important to engine longevity and overall noise level. A loose piston will knock when cold, and may stop knocking when hot...or may not. This will not only make for a noisy engine, but there will be a penalty in performance and oil control. The piston is not round, but rather oval, and the piston skirts are at 90 deg. to the wrist pin. Scoring and/or wear will cause the clearance to be too great. Depending on bore diameter, it might be more useful for long term use to have the engine cylinders bored first oversize and fitted by an expert machinist/engine builder. I see you have a factory manual, so look at section 4, pages 4-5 and up to get the specs.

Posted by Elmo Hayride
 - December 03, 2014, 11:06:21 AM

mittico68, to be fair, my knowledge about mechanics comes from reading and trying.

Posted by Elmo Hayride
 - December 03, 2014, 11:03:56 AM

Troll, what is the skirt clearance? I am not a veteran mechanic by any means so if you could use layman terms I'd really appreciate it :)

Posted by Troll
 - December 03, 2014, 09:58:08 AM

Did you check the skirt clearance yet? Looking nice is one thing, but the wear factor is more important. The manual specifies a minimum of .00169 inches to a max of .00275 inches.

Posted by mittico68
 - December 03, 2014, 05:15:57 AM

Awesome report!
Ehy Elmo, I'd like to have all your knowledge about mechanics, just to be able to avoid spending money each time ma-deuce (& my car too) needs a check... ;)

Posted by Elmo Hayride
 - December 02, 2014, 18:24:48 PM

It was a combination of washing and bead blast. I'm glad I didn't need to buy new pistons.
I hung the engine on a trapeze rig I made a couple of years ago. It's a lot easier than working on the ground.

Posted by Bucko
 - December 02, 2014, 17:43:59 PM

What did you use/do to get those pistons so clean?

PS: Thanks for posting the pictures - very interesting. :)

Posted by Troll
 - December 02, 2014, 16:05:11 PM

I thought, from your earlier posts, that this was a REPLACEMENT engine......my mistake.

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