White smoke, Oil, Power Loss. Help

Originally Posted by fastdruid

Only if replacing the rings.



I don't recall the SV being that bad, not as bad as a 360 degree parallel twin certainly!

Druid

Never done i to a sv, had a right mare with a 125.

[yorkie_chris]

Originally Posted by fastdruid

It is recommended that you replace the gudgeon pin circlips if you remove them though, they are pennies though.

damned foolish to reuse them

[Sid Squid]

Originally Posted by jasonkoscho

What/Where is the Oil Control Ring?

As Druid says, it's the third piston ring set, responsible for, would you Adam & Eve it? - oil control, i.e. keeping the oil below the combustion chamber and not above the piston where it would get burnt. They're not for cylinder sealing, just control of the oil so, (but with the caveat that I've never seen this occur with any of the worn engines I've operated on), you could *concievably* obtain good compression results, but the oil control *might* be duff - I'd be surprised, but logically speaking I suppose it could happen. I've never seen a broken oil control ring, both rails and the expander are made of springy metal rather than the rigid stuff that the top rings are made of.

Originally Posted by jasonkoscho

What could cause abnormal high pressure?

Well the obvious thing is ring blow-by, that is worn rings/bore such that combustion pressure makes its way past the rings and into the crankcase and the resultant pressure might, concievably, blow some oil up the breathers into the airbox. However, considering the compression test results you obtained, there's nothing obviously amiss with either the rings/bore interface or the head gaskets.

Originally Posted by jasonkoscho

We'll im in this far - should i take a look at the Piston rings while im here? i wasnt planning on it, but...

Well as you say, you've got this far - may as well take a look to be utterly certain.

Alright... I removed the cylinder and took a look at the rings. Everything looks pretty good to me. There was a little dirt, but other than than, they looked fine. Thoughts?

http://www.flickr.com/photos/2421681...7623904476769/

I just skimmed through the manual and it seems like the cam chain could be tricky. Having to keep it taunt all the time. Just curious if anyone has any insight.

Thanks again for all the help. Im going to order all new gaskets and parts and rebuild this week. Ill post some pics when its back together. As far as the Suzuki products go -- if you guys have any insight to any more common products, let me know.

Suzuki Moly Paste
Suzuki Super Grease "A"
Suzuki Bond "1207B"

Thanks again for ALL the help!
Jason

[yorkie_chris]

Moly paste = black moly grease, mix 50/50 with engine oil.
Super grease, multipurpose grease I think.
Suzuki bond just for cam cover gasket? Normal gasket sealer.

First piston and cylinder head in the sequence looked much cleaner and wet looking than the second one. Had obviously been running with coolant ingress. (decokes them a treat). Noticed that the exhaust valve stem heads in a couple of shots looked very white as if running very hot. Not familiar with sv so may be normal? I would definitely get both heads checked with a straitedge for warp just to be sure before you stick them back on. Better safe than sorry.

First piston and cylinder head in the sequence looked much cleaner and wet looking than the second one. Had obviously been running with coolant ingress. (decokes them a treat). Noticed that the exhaust valve stem heads in a couple of shots looked very white as if running very hot. Not familiar with sv so may be normal? I would definitely get both heads checked with a straitedge for warp just to be sure before you stick them back on. Better safe than sorry.

Hey thanks. What pictures where you looking at? I'm just curious because they are of both before and after of dirty and clean.

I have to say, this really does scream of an imploded head gasket. The break down sounds exactly like when I have blown one and the extra oil level could be from coolant getting in, and as it got hot and evaporated some of that would end up in the airbox. I would take the opportunity to clean it all up, then put it back together and see how it is. I would expect that would sort the problem.
just my opinion...

yeah - its all apart and im about to put it back together. I was hoping for an obvious blown gasket, but didnt find it. If you look here you will see what my gaskets looked like: http://www.flickr.com/photos/2421681...7624018060604/

When you had this issue and you replaced your gaskets -- what shape were they in?

Any of course, once its all back together, ill be sure to post how its riding.

Its difficult to see from pictures, you really need them in your hands, but it does look like the culprit to me. Mine were worse than that, but mine exploded, throwing coolant out all over my leg, the frame, fairing and back wheel. Explosions tend to be much more obvious when you look at the gasket.

hope it runs nicely again once its back together for you anyway, be sure to let us all know