Rebuilding my 1980 GS250T here...

[pete]

Good stuff, Chester looks pretty happy there... haha

[isu2014]

Got it all put back together and running like a champ. Kinda cheated on the the timing so I saved a little time there. I have all the parts ordered that I need to get this finished.

Going to look at a 1980ish GS550 on Saturday. I plan on getting it for my next project. The guy wants about $200 and all the parts are included and in good shape.

[pete]

Glad to hear it! And a 550 for the next project for $200? Man I wish we could get them that cheap here!

[isu2014]

The guy actually got the bike for free so I'm shooting for $100 but it has a good title and all that, some parts are in a box though so it needs put back together. It has one of those super plush king/ queen seats that I'm not fond of so that might need to go.

[pete]

Awwww man... free??!! Sheeesh! Good luck!

[isu2014]

Awwww man... free??!! Sheeesh! Good luck!

I passed on the 550 for sale. The clutch didn't disengage and the engine had moisture in it. Not about to get into something like that.

[pete]

Ok that'd be a lot of work!

[isu2014]

I was mainly concerned about having to open the cases on a 35 year old bike. Most times the screws strip. I know it needed clutch work, cylinders honed, new rings and gaskets, and the cam chain was complete rust...

[isu2014]

It's been nice in Iowa so I've ridden the bike some.
Here's a little video of the megaphones with no baffles after I got it tuned nice.

https://www.youtube.com/watch?v=bUnKRDncikU

[isu2014]

Finally received my seat cover from Thailand and got it put on. Also put on a new throttle cable. I took the carbs off to check the jets and see if it was rejetted, I can't figure out why it won't run nice with the baffles in the exhaust.

[pete]

Much better than the torn up one that was on there!

What did you find with the jets? Or have you not gotten that far yet?

[isu2014]

The jets are the stock size that the manual states. I adjusted the floats a bit and am going to reclean everything. Hopefully it fixes the problem because it's pretty loud right now and the baffles sounded nice.

[pete]

Good stuff, worth while checking the colour of the plugs too to work out if it's rich or lean.

[isu2014]

It was rich so that's why I thought it was rejetted. Now I'm baffled. I messed with the mixture screws and it always ran good without baffles but as soon as I put the baffles in it just runs like crap.

[pete]

Now I'm baffled.

If you have stock jets, no baffles, and it runs well... that tells me something isn't right with the fuel and/or air intake circuit.

If you put baffles in with the stock setup and it runs rich and not right, that makes me think that even more.

I can't recall intake wise now but is the stock airbox on it etc.?

All I can suggest right now is to start working out if there's a restriction in the intake somewhere that is not letting enough air in, and to check the needle heights, float height, etc. and make sure it all should be ok.