bazz

Speed has always been more important than safety in the field in which I work

This was a re ring of stock pistons The bore looks good I lightly honed it before fitting the rings The piston to bore clearance is 3...

Had a reply from heidens and they said the compression rings are marked and the mark has to face upwards I don't remember seeing a mark...

You could be right on that one Let's see how it pans out 🤞🤞🤞

Literally started the engine twice since doing a top end rebuild Cylinders lightly honed It was smoking blue before I rebuilt it Now...

Ok brilliant I can't have got that wrong then 👍👍👍

Yep new valve guide seals and I lapped the valves in The valve guides were in really good condition and the bore barely worn

This is one of the reasons I'm asking as this is the first xs engine I have worked on I don't know if they have tapered rings or not...

The only way I know to tell is to stand the ring on edge on a level flat plate and see if the ring stands upright

There's definitely no markings on them I looked really closely with a magnifying glass

Has anybody accidentally fitted the compression rings upside down on their xs ? If so what were the symptoms? I recently fitted a set of...

Yep I've worked in similar circumstances In fact I still work like that on some occasions I'm a fabricator welder in heavy steel...

You would have been better off using flat plate instead of Durbar It'd be easier to cut and would stay flat when bolted up But as long...

Bump Has anyone seen smoke as bad as this from a fueling problem?

I wouldn't say it was horrendously strong but yes it smells of petrol When I get the chance I'll check the float height and see what...

Plugs are very black and wet Problem is I'm going on holiday tomorrow so I have no time to investigate further for a week or so

Ok I ran the engine again today and the smoke is definitely not blue I took a clip of film of it

Before I started it the left carb leaked slightly until I gave it a few taps with a screwdriver handle to settle the float needle valve...

No it doesn't smell rich to me Or smell of petrol None of the eye watering black smoke that you'd expect

I'm wondering if the carbs are running rich enough to cause the smoke But not rich enough to cause black smoke?

I couldn't see any cracks when it was apart But I'm now thinking it's a possibility

I stripped it down because of the smoking and the main difference now is before the strip down the motor would smoke as soon as it was...

Got my xs motor back together today after fitting new rings, giving the bore a light hone, new valve guide seals fitted,new cam chain...

An infrared torch is useful for tracing and finding leaks It'll show up way before the naked eye can see it especially if it's clean...

Sorry to hear this It can get you like that sometimes Don't give up mate