Moscow John's Moscow Engine Rebuild

[Minter]

Here we go!

The long awaited strip down of Johns Moscow (x2) Nordkapp motor!

The starter motor was proper seized on! Good job we never attempted to take it off when we did your clutch John!

Id spent 2 weeks squirting all the rusty bolts with penol but had to result in more aggressive means to get the starter motor off. I got there in the end and managed to get all the head bolts off no problem and take off the head and cylinder..

Great colour on the plug and valves those CV carbs do a good job! Huge amount of carbon build up as to be expected..

Enjoy the pics so far..



Just removed out of the famous bike..


Now washed and degreased!


Starter Motor bolts now sheared off!


This will be fun!


Nice Colour!


At least the starter motor is now off!


Looking good considering all the miles...

I'll check all the tolerences tomorrow.. overall not too bad, Cyl head will be off to the engineering firm to have the studs removed..

[arceye]

That first engine looks a right state.
Are we any wiser as to wether Penol is any good ?

[pupster]

Great that you've started it Gary . I do have a spare unused starter motor that could go on it. I know I've been talking about using the unused 500 on my next big trip but if I end up travelling with my friend Les who rides a 225 Serrow then I might well use this engine instead. I finally did my post Pyrenees service today. I got rid of the groaning on the rear brake and hopefully sorted the oil leak which I think was one of the sump bolts. Tomorrow I have to work on my old Fourtrak

[Minter]

That first engine looks a right state.
Are we any wiser as to wether Penol is any good ?

Penol is good - worked ok on the head bolts. The starter motor distance block had corroded to the bolts and were never coming out! They did unscrew eventually from the engine case though.

[Minter]

Starting to go back together now..



Sump was clean as a whistle just the usual bits stick to the sump magnet..



Piston in good shape once all the carbon had been removed, maybe due to low quality fuel?

The rings were still just inside tolerance which i thought remarkable considering what its been through. New rings fitted.



Valves and head all de coked polished and reground. One exhaust valve had a a weird mark around it - i'll add a photo later, never seen it before but replaced it for peice of mind. May have been down to tappet adjustment on the valve but all seemed ok when pulled apart..



Just waiting for the cases to come back from powder coaters this week and all should be done for N Wales repatriation service! Its hard to beleive this is the same engine thats at the beginning of the thread!

[Minter]

All done! Test bed tomorrow evening then on the van to return to John at the weekend..



Magneto side done and dusted..



The dodgy looking valve i mentioned earlier in the thread..



Almost there..



All ready for another couple of trips to Moscow and Nordkapp!!

[pupster]

.... Gary, wasn't it supposed to be finished in blue?? ........

[Minter]

.... Gary, wasn't it supposed to be finished in blue?? ........

I'll do your next one in blue!!

[ellrider]

.... Gary, wasn't it supposed to be finished in blue?? ........

Red!

Isn't it you that has been to Moscow?