compression test results

[Guest]

166,156, 181, 200 dry.
181, 181, 206, 206 wet.

Doesnt look good. I'm going to send my head off to APE to be cleaned and lapped. Still looking for used mtc turbo pistons, about to give up and buy new. I'd kinda rather use stock compression pistons to save the low end power. Will 1150 cams do much with a turbo? Oh yah, the turbo is leaking too. I can hear the oil inside crackling after I shutoff the bike. Looks like it'll have a fresh top end pretty soon. Maybe in time for Summer?

 

[Guest]

Here we go.

 

[rapidray]

Those compression #s were not an issue. Did you do a leakdown test first, like I recommended? The 1150 stock cams are about the best you can use in a 16 valve Suzuki turbo. Funny Bike racers still use them today.
Ray.

 

[Guest]

Hi Ray, I may have been looking for an excuse to do the top end. Im sending the head out to be cleaned and lapped. Im having the turbo rebuilt too. No way it can smoke then.
So, I'll be putting in studs, pistons, and obviously the cylinder will be fresh a 3 mil over. Ill I'll leave the bottom end stock until next time, or if I suddely get tons of money for no reason.

 

[Guest]

...and a new crank seal.

 

[Guest]

Oh, when I picked up the bike they hadnt done a leak down test. I told them to, but they didnt. Nice folks, but this is the second time the work order wasnt completed. So, oil was getting into the cylinders from somewhere so if wasnt getting by thr rings it was either the turbo or the head.

 

[blowerbike]

bad carbon seal or you do not have a good oil return routing.

 

[Rob S.]

166,156, 181, 200 dry.
181, 181, 206, 206 wet.

Those compression #s were not an issue.

I was gonna say.

 

[Guest]

The routing is a straight shot from the turbo to the oil fill openining. Yah, the cylinders looked great. Nice cross hatching and no rust pitting that I could see.
I figure I can get the turbo pistons in there and run it up to 200 hp. It will probably take me awhile to get enough $ to do it.

 

[Guest]

Curious, what would make the 2 cylinders presure lower than the others? Could I just re ring it, or would it need to be bored and use oversized pistons? Sorry to jump around so much. I'm just not positive on the build direction yet. This next build was on the calander for next year, I just saw the smoke and the oil pushing out the crank seal and got curious. The shop paperwork recommended a rebuild. Thats the last time I dont check here first.
Who reuilds heads [standard issue 83 1100] at a reasonable price? What head gaskets are good for turbos?

 

[rapidray]

I would just hone & re-ring it. The head just needs to be checked to make sure the guides aren't loose. If the guides are worn then you will need guides & a valve job. If the guides are good then just new seals, a set of springs & lapping the valves is good. I do a LOT of cylinder heads & would recommend a set of Kibblewhite springs, even with stock cams, to keep the turbo boost from blowing the valves open. Also, what Terry said about the seal in the turbo. Get the turbo rebuilt to take care of that.
Ray.