I have a 1989 Suzuki 250R and have had complete bad luck rebuilding the motor. I've tried twice. I think something isn't right in the bottom end that keeps blowing the top end. Well I found a recently rebuilt motor from a 91 for sale and wondering if it will swap into mine with little to no work or is this a major project? I'm thinking it should be a direct swap but not sure. Will I need any other parts for the swap? Will my Paul Turner exhaust from my 89 swap over to the 91?

 

yeah you should be fine. the only differance between those years is the suspension, well actually the whole rear end. motors and mounts are the same from 87-92, they are the power valve years. about your engine problems though, what keeps happening and how do you break your motor in and stuff

 

Ok thanks. I keep having the top end blow in mine. I rebuilt it myself and it lasted about 2 hours. I thought maybe I just did something wrong. So I took it to a guy that knows what he is doing and he rebuilt it this time and rode it for a few hours he said and it did fine. Well after I got it back it blew up withing 10 minutes of riding. Just seized up. I'm thinking there was metal in the bottom end that caused it to do this the second time but I'm not sure. I'm just tired of messing with it. What do you guys think is a fair price for a new motor? Thats slightly used? Has under 10 hours on it since the rebuild acording to the guy selling it.

 

it's kinda hard to say, i just don't trust people like that i guess. not that i think they're lying, i just like to do all my own work. i know though that if you install your head gasket backwards it will seem to run fine and will line right up but can cause over heating. you may be lean also. what ratio do you mix your gas and oil?? on the motor question i'd say if it's really that fresh then maybe $400.00 - $600.00 depending on what's done and how well. sucks just going off pics on ebay though.