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ET: Engine (Twin) Carburettor Resleeving

highbury731

Well Known and Active Website User
VOC Member
A few years ago, Graham Jameson (a VOC member) in Auckland, New Zealand was doing re-sleeves. He may still be doing this. I recall he had found a plastic material which is petrol-resistant.
Paul
 

Robert Watson

Well Known and Active Website User
VOC Member
Presume original carbs. Resleeving fixes the problem of the slide/body wear but does nothing for the slide/jet block interface. Pull the sides out and you will likely see a lot of wear in the "slits" up both sides of the slide and on the part of the jet block that it rides on.
 

Magnetoman

Well Known and Active Website User
VOC Member
Resleeving fixes the problem of the slide/body wear but does nothing for the slide/jet block interface. Pull the sides out and you will likely see a lot of wear in the "slits" up both sides of the slide and on the part of the jet block that it rides on.
A pre-Monobloc would require variations, but in several posts starting at the following I describe a better way to resleeve a carburetor.


The cheap and easy way to resleave a carburetor is to bore the carburetor and shrink a sleeve on the slide. However, if/when that slide or bore subsequently wears, or if you ever want to change the cutaway, you face a significant problem since the sleeved slide is "special" and so is not interchangeable with any other one. Instead, if you sleeve the bore as described in those posts, the carburetor is back to stock configuration.

Before anyone jumps in to say I should have just used a replacement carburetor, I'm trying to restore that particular motorcycle to as close to 100% factory-original condition as is possible, and the numbers stamped on its carburetor are unique to that small=production machine. I realize there's a strong contingent here that believe matching numbers are irrelevant, but I desire having matching numbers on this bike, and you can't argue with a desire.
 

flygiro

New Website User
VOC Member
Presume original carbs. Resleeving fixes the problem of the slide/body wear but does nothing for the slide/jet block interface. Pull the sides out and you will likely see a lot of wear in the "slits" up both sides of the slide and on the part of the jet block that it rides on.
How do I fix the problem then, they are original carbs as is the bike, it will not tickover or pickup pickup from low revs. I am back home in UK as is the bike.
 

ClassicBiker

Well Known and Active Website User
VOC Member
I just emailed AH Motorsport. First called the 800 number and it didn't work. I then looked up a local number for Lund Machine in Snohomis Washinton, that turned out to be a wrong number. So hopefully I'll get better contact info. If I do I'll share it here.
Steven
 

ClassicBiker

Well Known and Active Website User
VOC Member
Andy Hardan of AH Motorsport a.k.a. Lund Machine a.k.a. www.amalsleeve.com has moved to Springtown Texas. His email address is still good. I sent him a set of 930 Amal Concentrics for my late father's Bonneville to sleeve on June 25. So hopefully they will be back shortly. I will keep you posted.
 

ClassicBiker

Well Known and Active Website User
VOC Member
Received my re-sleeved 930s back in yesterday's mail. Just about a three week turn around. They look good and no hang ups. They came well protected wrapped in a good amount of bubble wrap.
 

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