Sleeving Vintage Amal carburator

[tonyfoale]

My guess is what size to oversize them. They did chrome slides for a few years to avoid the galling action but found that with time the chrome de-laminated and would be sucked into the engine. Anodized slides are sold as replacements and also used on the new replacement premium carbs (including a removable pilot jet).

What was the base metal used for those chromed slides? During the 1960s I used a very old Amal which had a brass slide chromed. Never had any de-lamination.

Click for full size image.
Slide is centred on top row.

I have a couple of original Mk2s, they had anodised slides from new, not replacements. I think that the removable pilot jets came in with the Mk2s, there were two locations, front and back. The front was the normal 4 stroke position with the rear for 2 strokes and 4 strokes with steep down draft. The rear was further divided into left and right positions.