gsxr 250 2004 vs 1989 engine transplant

[barty5]

anybody able to advise are there any major differences in the 2004 and a 89 as i have complete 89 with engine probs and seen a 2004 on tm incomplete thinking of doing engine swap

[bobsmith]

2004 is a twin so I would think engine dimention, etc would be very different (89 is a inline 4 isn't it?) also the newer twins are bloody slow compared to the inline 4s...

[Sketchy_Racer]

It wont be a simple bolt in deal, But It could be done.

Don't expect reliabilty though. Not if you start cutting and welding the frame

[McJim]

They stopped making GSXR 250's in the late eighties/early nineties...the 2004 bike is probably a GSX 250 which is a completely different bike...made in China. As far as I know there is no such thing as a 2004 GSXR 250 but if someone proves me wrong I'll happily admit I'm wrong.

I don't think the engines will swap easily.

You may have more luck with a Bandit 250 engine or even and old 250 Katana engine....

[hellnback]

The wife's bike is a '88 GSXR250 with a GSX400 Impulse engine in it, bought it like that so not sure what the procedure was like. Looks tight in there but it fits and goes great!!

[JeremyW]

Yea you are going to have some trouble with that engine swap. Id say look for another inline4, maybe a cheeky 400 implant? If you have a good friend in the VTNZ or something to register it as a 250 you could have yourself a 400 before you know it :)

[bert_is_evil]

'89 (GSXR) is a water cooled inline 4, the '04 (GSX) is an air cooled parallel twin

[barty5]

crap ok this thing is de reg so i guess the 400 in the 250 frame and just reg as a 400 might be the go. Prob is ive got two motor original the cock left out side it fell over and he left it and he no 4s full a water last year or so second motor all good but very low comprssion needs valves to be done and new rings $112 per pot thinkin might get 400 runnun for less than that whould cost all up

[bert_is_evil]

crap ok this thing is de reg so i guess the 400 in the 250 frame and just reg as a 400 might be the go. Prob is ive got two motor original the cock left out side it fell over and he left it and he no 4s full a water last year or so second motor all good but very low comprssion needs valves to be done and new rings $112 per pot thinkin might get 400 runnun for less than that whould cost all up

huh?
10 char