Re sleeved Maney Alloy cylinders

Moto55UK · Apr 26, 2021

I have had my Maney Alloy cylinders resleeved , the original instruction sheet says not to machine the face flat, Does anyone know how much should be left remaining above the gasket face?

lcrken · Apr 26, 2021

My memory says that Steve left the lip of the sleeve .005" above the deck of the casting, but I'm not positive of that number. I have a new set of his cylinders on the shelf, and I'll pull them out and measure them to be sure.

Ken

Fast Eddie · Apr 26, 2021

Well I thought it was .004”...so we’re either both close or both wrong Ken !

lcrken · Apr 26, 2021

You are closer than I was, Nigel. I just measured a new 750 Maney cylinder, using a ground straight edge and feeler gauges, and got .003" and .004" at various locations around the cylinder surface.

Ken

Moto55UK · Apr 26, 2021

Thanks Chaps, the new sleeves measure 0.008" so I'd better get it sorted .

Mike

Seeley920 · Apr 26, 2021

Where did you get the sleeves Mike??

Moto55UK · Apr 26, 2021

Seeley 920 : I had them made at laystall engineering in Wolverhampton. Once fitted and honed to size there are to be returned for silicon carbide impregnation.

xbacksideslider · Apr 26, 2021

Nice parts,

dobba99 · Apr 26, 2021

Bolt torque plates onto the cylinder before honing, both top and bottom, as the cylinder will bulge very slightly inwards especially around the counterbores for the long through bolts.

Seeley920 · Apr 26, 2021

Thanks Mike

Had work done by them before, quality stuff

Fast Eddie · Apr 27, 2021

Moto55UK said:
Seeley 920 : I had them made at laystall engineering in Wolverhampton. Once fitted and honed to size there are to be returned for silicon carbide impregnation.

I had them treat the bores in my Maney block too, really helpful folks, dealing with us odd ball vintage bike nuts is nowt compared to their normal industrial work, but they still bent over backwards for me.

Moto55UK · Apr 27, 2021

just before leaving for the machine shop I checked my e mail , I had a reply from Steve Maney, he suggests that "0.002" should be enough "; so I'm going for the mean and 0.003" .

Matchless · Apr 27, 2021

My Maney 920 barrels were 0.003" when new.