Carb Slide Wear

[Magista]

So what do you think my dudes, new slide or just buy a new carb (376 mono)?
 
Idle is hunting/racing after the bike is good and warm. There are no air leaks at the manifold or the filter intake. Carb internals are clean and have been ultrasonically cleaned.

[muskrat]

G'day Magista.
If the slide is badly worn then the carb body is as well.
The idle hunting/racing is caused by air leaking in through the top and past the worn slide/body.
I've recently replaced the carb on the A7 for that reason.
Cheers

[Joolstacho]

A new JRC. Job done.

[Magista]

G'day Magista.
If the slide is badly worn then the carb body is as well.
The idle hunting/racing is caused by air leaking in through the top and past the worn slide/body.
I've recently replaced the carb on the A7 for that reason.
Cheers

Thank you for confirming my suspicions.

The next question is do I replace with the same mono or go concentric or....

[muskrat]

G'day Magista.
Burlen are out of stock for your standard Mono 376/083
I went for a Concentric Mk1 Premium 932 but it is modified. your carb would be  https://tinyurl.com/4y56vsh8   I love the easy change pilot jet.
I'm not sure if your old cables will fit.
As Jools said a new JRC (Keihin PWK) carbs are good. I have two on my Cafe A10RR+ (twin carb)
Cheers

[Rex]

I'd recommend the Amal Premier as well.
That slide in the pic needs a serious resleeving.

[groily]

Hitchcocks shows Monoblocs in stock, at https://accessories.hitchcocksmotorcycles.com/Amal-Carburettors/376-Monobloc-Complete in 15/16ths, Inch and Inch 'n 1/16th. Dunno if they have them for real, but worth asking if you'd prefer one of them to the other options mentioned. Hitchcocks have always sorted me out efficiently and fast in the past.

Anodised slides are very worth it, if available for the version you need. Far better than the standard one - dunno why there's even a choice frankly.

 

[Magista]

Thanks for all the tips. I'll check into the various options.

I was a bit shocked when I pulled the slide. Thing looks like it's been eating gravel.

[Magista]

Just a quick update.

I ordered a JRC 26mm to replace the beat Amal. I'll let you know how it works once it's installed.

Thanks for the tips.

[Joolstacho]

I reckon you'll love the JRC, mine's excellent.

[Magista]

The JRC 26mm just arrived. It appears to be a nice little piece of kit. Bought mine from Lowbrow Customs in the US. Easy breezy, fast shipping.

I'll likely install it in a couple weeks...or at least when it's not freezing out.

[Joolstacho]

My JRC just starts first, or at the most second kick, and immediately the SR settles down to a perfect steady tickover.
(Never had that with ANY Amal).

[RDfella]

Have to say the carb being glued onto the flange doesn't excite me and the casting's a bit rough compared with a Mikuni. The latter have always impressed me with their quality - if only they weren't damn nigh impossible to tune. Of course, if already set up for a particular motor, not so bad, but when starting from scratch -- wish I'd looked online and seen all the hassle people have trying to jet Mikunis before I bought mine.

[Joolstacho]

To be fair, the flange on my JRC is not only glued but is very soundly grubscrewed. Very solid, -perfectly good engineering. The quality of castings and components far exceed any Amal ever made, and are at least as good as or better than the 4 Mikunis I have in stock. The JRC is a fraction of the price of an Amal, much less a Mikuni.
Tuning? Took me all of 2 minutes. Okay I haven't roadtested it in all conditions yet, but I bet it's going to be pretty useful.

[Rex]

I must admit I've always found Amals to be more than adequate for my old bikes. Simple, tuneable, reliable and cheap spares. Why reinvent the wheel when performance isn't altered dramatically?