im new on here but what a fourum .......
hi all just past my test brought a zzr 400 and a gsxr 400 gk73a
the problem im having is that the gsxr runs mint but after running for about 5 mins the temp gauge goes from 0 to the top off the red but the engine still feels cool is there any think that it could be other than head gasket ...
any ideas would be much appreciated thanks

I would say it's time for an engine strip down. Don't keep running it like that, it's telling you there's a problem. I'd suspect the head gasket.

thats my suspicion but ive hears things like some 1 changed there rad cap and fixed a simular problem

WOULD a gk76a engine fit straight in as could pick 1 up for 100 quid

I haven't a clue bud but from what I've read on here I don't think it's that straight forward. Try searching the GSXR Workshop board, I'm sure the question has been asked numerous times.

thanks bud