BANG!

kwackman12 · Post by **kwackman12** » Mon Jun 09, 2008 11:39 pm

Just got back from Snetterton all was going well untill the last session! smoke started pouring out of the right hand exhaust, but no rattles or knocks & engine still runs fine?? what do you think crankshaft oil seal?
I feel I must comment on the pfm/fireblade front brake set up though! bloody awsome!! def recommend these, one finger braking & powerfull enough to launch you over the front! "& no i didn't"

Charles · Post by **Charles** » Tue Jun 10, 2008 5:47 am

I'd guess the oil seal

kwackman12 · Post by **kwackman12** » Tue Jun 10, 2008 10:40 am

"Bugger" thats what i was thinking Charles, better get the spanners out as i have another trackday booked at Oulton park on the 1st July

mr_bungholeo · Post by **mr_bungholeo** » Tue Jun 10, 2008 1:46 pm

check the coolant too..it may be the head gasket as they seem to fail quickly...but seals slowly get worse.....

wakasaki · Post by **wakasaki** » Tue Jun 10, 2008 2:49 pm

As said...
if the gearbox oil has gone down yep...

And if it is the main oil seal right crankside
Its a rebuild ..because the primary drive gear
is pressed heated...
and they normally weld them after a rebuild / after balancing..

ooohhhhhhhhhhhh.......
Still worse things happen...

G

kwackman12 · Post by **kwackman12** » Tue Jun 10, 2008 5:02 pm

Just taken the barrels off, no sign of head gasket leak, coolant loss or geabox oil loss! but i have found different size oil feed pipes going to the inlet rubbers, right side crancase has an excessive amount of (red) two stroke oil sitting in it, one of the oil check valves also seems to be missing the right side where the smoke is!
So just ordered new rings,base gaskets,little ends & carb mounting rubbers. But i need a new set of oil feed pipes complete with all the fittings (not available from mr K anymore) does anyone have a set please!!! [-o< happy to pay for them. Hopefully this is the problem

Charles · Post by **Charles** » Tue Jun 10, 2008 5:15 pm

kwackman12 wrote: But i need a new set of oil feed pipes complete with all the fittings (not available from mr K anymore) does anyone have a set please!!! [-o< happy to pay for them.

I have a spare set you could have, but probably so does one of the UK-gentlemen

mr_bungholeo · Post by **mr_bungholeo** » Tue Jun 10, 2008 6:22 pm

im sure i can find a spare set or two in the pile......

Charles · Post by **Charles** » Tue Jun 10, 2008 6:32 pm

mr_bungholeo wrote:im sure i can find a spare set or two in the pile......

that's what I thought

kwackman12 · Post by **kwackman12** » Tue Jun 10, 2008 8:17 pm

Thanks for that chaps, has anyone come across this before?

nate · Post by **nate** » Tue Jun 10, 2008 8:24 pm

no.... both my oil feed tubes are the same size on both my engines

Glad I checked though

falconman · Post by **falconman** » Wed Jun 11, 2008 11:38 pm

I would check the crankcase to see if the check valve is still in there. Hate to see the motor go boom again after all the work.

Cliff · Post by **Cliff** » Thu Jun 12, 2008 5:13 am

I have come across a blocked check valve before, it was after a bike had been laid up in a damp garage for a couple of years. Freed it with a pin and WD 40.
Possible yours had been blocked at some time, and some "mechanic" has fixed it by cutting it off.

kwackman12 · Post by **kwackman12** » Fri Jun 13, 2008 12:29 am

Cliff did it give the same symptoms as i had, excessive smoke?

I have come across a blocked check valve before, it was after a bike had been laid up in a damp garage for a couple of years. Freed it with a pin and WD 40.
Possible yours had been blocked at some time, and some "mechanic" has fixed it by cutting it off.

Cliff · Post by **Cliff** » Fri Jun 13, 2008 4:53 am

The side that was blocked never smoked at all, thats why i looked into it and read about the check valve. I reckon that they must hold back the flow of oil slightly as the pressure has to pass through a ball/spring thingy.
If one of your valves are missing, i would think it will allow more oil to travel down that tube , thus more smoke. Hopefully that will be it.