75 Suzuki GT250

twnhll · Posted: Fri Oct 23, 2009 7:03 pm Post subject:

I got a whole oil pump assembly including both lines. I also found a repair manual through Open Library at a library about an hour and a half from my current location,just need to go get it.

twnhll · Posted: Sat Oct 24, 2009 4:41 pm Post subject:

A fellow Hustler is looking for expansion chambers for a 73 gt250.Do y'all know where he may be able to get them,or specs to build his own?

twnhll · Posted: Tue Oct 27, 2009 1:01 pm Post subject:

Should I get a set of 2nd over pistons and rings for this bike? I have no idea how the whole oversizing deal works....

dorT500 · Posted: Tue Oct 27, 2009 1:12 pm Post subject:

You need to take the cylinders and your old pistons and rings first to a two stroke machinist and supply him with all the tolerances, wear limits,etc. if he does not have them or able to locate them. He can then determine if you need the work. If so...make sure he champers the cylinder port edges according to specs also and cleans everything before you take it home.

twnhll · Posted: Tue Oct 27, 2009 1:21 pm Post subject:

Right on,thanks DorT500

I'm curious how oversizing works.I've seen 1over and 2nd over sets of pistons and rings.guess it just depends on how worn the cylinder and pistons are? I'm thinking to get em just to have em for any future wear.

dorT500 · Posted: Tue Oct 27, 2009 1:41 pm Post subject:

You have not picked up that free library service manual you said you found..Have you? Wink

twnhll · Posted: Tue Oct 27, 2009 2:06 pm Post subject:

I have it ordered through the interlibrary loan program,but haven't heard anything from em yet.A gentlemen on another forum was nice enough to mail me a Clymer he had,but haven't recieved that yet either.I also am going to obtain another manual from a different author.So I will have a Haynes,Clymer, and another one.Hopefully that covers eveything for this bike.

Russell · Posted: Tue Oct 27, 2009 3:07 pm Post subject:

Once you have cylinders and pistons/rings all properly set up,which may mean a rebore and oversize pistons, you'd be surprised just how long those pistons and rings will last when the bike is properly set up, using quality oil,and ridden correctly.

twnhll · Posted: Wed Oct 28, 2009 2:46 pm Post subject:

What's the best thing to use to scrape the carbon off the piston head?

dorT500 · Posted: Wed Oct 28, 2009 8:18 pm Post subject:

Thin flexible metal, round corners so it does not dig in....I just use the end of a hacksaw blade myself on the top of the piston.

Note: See that you posted the question a few hours ago, your question may have gotten more attention and a quicker response from somebody if you had started a new topic on it. Same thing on the exhaust,etc, you were looking for on a friend of your's bike. Might put that in the 'wanted' department. Wink

Just trying to help. Good luck

Blue · Posted: Wed Oct 28, 2009 9:04 pm Post subject: scraper

My friend the Honda guy has a tool for that, made out of super hard nylon, that won't scratch pistons, I'd have to ask where he got it, but I've used it and it works pretty good, maybe a little more effort required...........Blue