Posts made by SpookDog

I think so but ain’t sure. I need to lower it for sure. I just need to know what’s standard to take it from here...

Sorry again 10cm

I’ve searched and found nowt. Can anyone tell me what the standard is?
I have 11cm links and it’s just too high for my old hips. Anyone got any standard or lowering links, let me know please...

Oh yeah! Could it be needing a decoke? PV sticking in the bushes maybe?...

Is it possible to remove the pulley cover and watch what is actually happening? Might be a dumb question but I don’t have a servo powered valve...

Dt’s don’t die! They just slowly fade away (if they’re treated right) any 2 stroke does.
Which is the issue, did the power loss come on slowly over time or just happen? Slowly would suggest normal wear to rings like the man said...
I’m wary of anything that claims to fix without work. Apart from that teralyne/whatever they pump through 4 strokes. But 2T are different, like you say, anything that breaks down carbon is not likely to be lubrication friendly to your bearings...

Hey! You weren’t wrong, there is a paper gasket. I was wrong about the oring though. It’s to big for the coolant pipe

The small oring in the gasket set is for the metal coolant pipe. It goes on the end that mates to the pump. Mysteries solved!...

Sorry it’s 27mm Inner Diametre X 2.5 or 3mm Cross Section.

Calum, cheers for the info bud, it puts my mind to rest. I always worry more when learning a new engine...

Same as in my gasket set, it’s to small. You need a 33mm one for the thermostat. Get one from eBay. If you don’t have an account someone here will probably order it for you. It’ll be pennies ...

Sorry, was busy thumb typing on a tiny screen!🤪
It’s not just the bush, the end cap it fits into also seems small. Plus it’s fixed, doesn’t move...
I’m guessing that the 3mb was a later servo operated valve? Totally different end cap on that side?...

One more question! Do you know what the black oring is for? I’ve got a full gasket set with black oring, but the only black oring I found was squashed into the PV and is obviously not right.
It’s about 3/4 inch.

Fowler’s don’t like hotlinking apparently!
I found the diagram, unfortunately it is different from what I have fitted. I found I can affect a seal if I slip the oring over the end cap. Without it the whole cap/bush is very loose. It slops around loads! Whereas the other side is a good fit.
I wasn’t even sure if it was original to the barrel. Who knows what butchery was done before. The PV has 3bn on it I think, yet the barrel is 3mb. I don’t know if there’s a difference. I’m still fumbling around in the dark. The only other 2strokes I’ve worked on were air cooled, ts er’s, and more shedloads of Vespa & Lambretta’s than I can recall. I don’t recall them having an oring between them
Cheers bud!

Sorry bud? Pics? I get a link with ‘all text’ access denied.
Neither my bush or the cover have oring grooves on them, on that side. I wish I could post pics to show you what I mean but I just have a phone.

The kickstart side is straightforward, simple groove that fits perfectly. It’s the gearchange side that has no groove or place for a seal. The previous owner had the orange one just flopping around and a black smaller o ring squashed flat between the bush and the cover. Neither of those two are affecting a seal. I’ll check and see if there’s a paper gasket for that side. That would be enough of a seal...
It’s frustrating when the last owner didn’t know what they were doing, it makes reassembly a bear!...

Or are the orange seals for servo PVs only?...

I don’t know where the seal fit is all. Putting it together and in is no problem. I just don’t think it was correct when I took it out..

That’s utube not iTunes! Ducking spellcheck!

Where do the o rings fit, the orange ones? Also is there a gasket? Whoever built my engine last even had a black o ring sandwiched in. I really need a schematic or iTunes vid on how to reassemble the PV. I have the fixed PV with diamond end. It’s a 3bn engine with a 3mb barrel and head...
Ta!

Same year and color as mine, except mine is Far from original🤪 has a terrible paint job...
They remind me of a road legal IT that used to kick around when I was a teenager. That was the year that my bike was made!...