Coolant inside cylinders

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BuzZz · #11 Unread post by **BuzZz** » Mon Mar 28, 2005 8:28 pm

That's the attitude! It's only money... and better yet, not even mine...

Quick 350 · Tue Mar 29, 2005 1:02 pm

I think the grime he sees in the cylinder is carbon build up on top of the pistons this is common for high mileage bikes and should burn off with new plugs. The big thing with coolant is it abrasive and can over a period of time scratch and oblong or cylinders. as for just cranking it a few times with plugs out no damage should have been done. Good luck!

BuzZz · #13 Unread post by **BuzZz** » Tue Mar 29, 2005 6:43 pm

Yep, I think it's just normal build-up too. The WD will help lube things until the oil takes over again. It will smoke like a french hooker for a minute or so when it first fires, but if anything, some of the build-up will be cleaned out by this experiance and things will be just dandy.

sabbath · #14 Unread post by **sabbath** » Sat Apr 09, 2005 5:04 pm

I got the cylinder head out and there is no head gasket.

Amazing that the bike was driven all these years without a head gasket.

TechTMW · #15 Unread post by **TechTMW** » Sat Apr 09, 2005 9:15 pm

Alot of bikes (like Ducatis) have no head gaskets.

... but an ex500 'should' have one. Are you sure it's not stuck to one of the mating surfaces? A bike designed to have a head gasket probably wouldn't run very well at all w/o one ...

sabbath · #16 Unread post by **sabbath** » Sun Apr 10, 2005 5:56 am

There's no head gasket. I've had it for a year/5000 miles, don't know how it was treated before. Firing was rough at lower revs for the last few months but I assumed the carbies were not balanced. No problems above 7000 rpm. Just found it very surprising.