Amal Premiere carbs

My Christmas present to myself was a set of new Premiere carbs for my recently refurbished 72 as the slides were pretty worn and scored on my old ones. I ordered them from Jerry through Access Norton and they arrived in about a week. I did have a bit of an issue sorting the throttle cables out. I was trying to run them both down the same side and it was causing the slide to hang on the left hand carb. Once I figured out the splitter needed to be in front of the head steady and the cable run down each side of it, the problem was sorted.
I took it out for a fairly long run today and everything is looking pretty good. It starts with one kick and pulls strong. It will idle great, but after its been ridden for a while and it gets good and warmed up the idle still seems to need to be tweaked up a little bit, then it holds it fine. Kind of still a mystery why it does this. I'm hoping it might go away once the engine gets broken-in. Right now it only has about 350 miles on it.
I have a set of the Carb Tune vacuum sticks. When I get a chance will try to reset the idle with them.

I find my original Amal carbs with new anodized slides are much better than they ever were, but they are still very sensitive to temperature, both the weather and the bike as far as the idle adjustment goes. But they go down the road just great.

Dave
69S

I keep a little screwdriver in my Norton jacket. Usually a 1/16 turn is all it needs to get the idle back in the sweet spot. I turn each idle speed screw the same amount to keep them synch'ed

I balance the throttles and idle by my carb stick. Set the idle to the best vacuum reading, then adjust the cables so the columns move in unison

good on you, great xmas present. I have all the premier parts less the relocated pilot jets. I made my own tufnol carb insulators, 5mm thick. This is after I noticed how hot the carbs got after a run. aside from setting the floats by fuel level and synchronising with a manometer. I get same reliable modern engine type idle, yeh!
so, have you got decent insulators, not the normal gaskets they supply in kits?
Cheers Rich

Nice! If/when my oem (sleeved) Amals start acting up I'll definitely spring for a new pair. Hopefully that won't be for a while, they still work like new but it's great there are "original" new replacements. Wouldn't consider using anything but Amals on my Commando. I have always wondered why they allow Mikuni-equipped bikes on the forum...










To avoid flames/arguments - that last sentence is intended to be humorous, NOT serious!

Yes, I got the thick tufnol carb insulators. I ordered them out of the UK and it took them over a month to get here. I also flattened the intake manifold surfaces on a glass plate to head off any air leaks. Couldn't do much about the head surface.
A smear of Hondabond on the insulators. Silicon grease on the carb orings and tightened just enough to compress the spring washers.