Help me diagnose my motor
- Thread starter fstbusa
- Start date
yeah it did.... damn that motor is heavy!!!! hope its nothing too major!! John I wish you were a little closer to help me tear thru this thing!
lease:
lil charlie
Registered
good luck buddy, hope its simple
Number 4 cylinder..... appears to be detonation.
1) I have a few questions. I plan on sending the head somewhere(need suggestions) to get it fixed up. Do I send the whole thing with the valves, shims, complete? It appears I might need a couple new exhaust valves.
2) Should I put new pistons in the whole thing or just replace the one. I have a set of good used stock pistons I could just use one...... ???
3) There is a tiny tiny little knick in the top of the cylinder wall right at the top where it meets the head. See pic almost dead center. Do I need to fix this? The cylinder is undamaged otherwise.
4) My brother in law says I should file down the ring gap on a turbo motor.... thoughts?
5) Should I be worried about any debris in the bottom end. Everything appears it was contained in the top end.
1) I have a few questions. I plan on sending the head somewhere(need suggestions) to get it fixed up. Do I send the whole thing with the valves, shims, complete? It appears I might need a couple new exhaust valves.
2) Should I put new pistons in the whole thing or just replace the one. I have a set of good used stock pistons I could just use one...... ???
3) There is a tiny tiny little knick in the top of the cylinder wall right at the top where it meets the head. See pic almost dead center. Do I need to fix this? The cylinder is undamaged otherwise.
4) My brother in law says I should file down the ring gap on a turbo motor.... thoughts?
5) Should I be worried about any debris in the bottom end. Everything appears it was contained in the top end.
lil charlie
Registered
don't cop out or you will be redoing it again. Do all the valves and all the pistons. Thats like doing the brakes on your car but only doing one wheel instead of the complete axle or changing your oil and not the filter. with the way that piston ring looks you should be opening up the bottem end for inspection. I'm not a turbo guy so I can't answer that question for you.
Filing the rings per cyl is a good idea...I do not know but there is probably a spec for a nos, turbo, and regular stock parts...from what I have done nos engines leave the rings looser than stock because the heat of the nos will close them up while running.
It would be nice if you could send out the head and get it back as a bolt on..but you still have to degree it, which seems easy after you do it a few times of which I'd rather pay a shop to do.
It would be nice if you could send out the head and get it back as a bolt on..but you still have to degree it, which seems easy after you do it a few times of which I'd rather pay a shop to do.
Port Tech eh? Have any contact info? Also do I send them the complete head?
I have a whole set that came out of another bike that I bought a number of years ago.... I might just do that.... I have a very limited budget on this rebuild and want to get it back going without spending $2k. ???
It very well may have... the FMU bracket broke under the tank and as someone said above, the fuel line could have gotten kinked without me knowing it.
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