Monobloc resleeve

Trevor Hallam · Aug 18, 2023

Hi all, apologies if there is up to date info somewhere on the forum, but I’ve looked and have only found older information and dead links.

I have a set of monoblocs for a basket case Atlas I’m working on (64 motor, 66 frame) and am wanting to have the carb bodies resleeved. I’m in Canada so I reached out to Bruce Chessell but he said he’s not doing them anymore. Does anybody have contact info for a shop that will do a good job? Is Lund still doing them out west?

Thanks in advance.

texasSlick · Aug 18, 2023

Sorry to hear that Chessell has bowed out. He did mine.

One by one, our supporters are leaving us ....... hopefully new, younger blood will fill their shoes.

And hopefully, someone will chime in give and give us a lead ......

Slick

robs ss · Aug 18, 2023

May help? Jun 7, 2018

Trevor Hallam · Sep 22, 2023

robs ss said:
May help? Jun 7, 2018

Thanks for the link. I'll reach out to them when I get to that point in things!

Paul W. · Oct 12, 2023

Did Lund Machine stop doing them, too?

Trevor Hallam · Sep 12, 2025

Hi All, reviving my own dead thread here. I'm still working on finding someone to do this in North America. I've sent a couple of messages through https://amalsleeve.com/ with no answer. Has anyone had any work done there recently?

mdt-son · Nov 2, 2025

I am waiting for a reply from them too. Their website was updated in 2024, but a disconnected phone line is no good sign. If they have ceased business, why not to take down the website also?

- Knut

concours · Nov 2, 2025

I would offer, that the availability of brand new Amals negated the need for the cottage industry.

JMWO

Gilesy · Nov 2, 2025

Trevor Hallam said:
Hi all, apologies if there is up to date info somewhere on the forum, but I’ve looked and have only found older information and dead links.

I have a set of monoblocs for a basket case Atlas I’m working on (64 motor, 66 frame) and am wanting to have the carb bodies resleeved. I’m in Canada so I reached out to Bruce Chessell but he said he’s not doing them anymore. Does anybody have contact info for a shop that will do a good job? Is Lund still doing them out west?

Thanks in advance.

I have a pair of un used monoblocs that I was going to put on an Atlas but fitted a Mikuni instead. They are jetted for an Atlas. If you are interested I'm selling.

Trevor Hallam · Nov 3, 2025

concours said:
I would offer, that the availability of brand new Amals negated the need for the cottage industry.

JMWO

A very fair point and I think you're right. I'm sure demand has dropped quite a bit. Its a shame though, as I have two otherwise perfectly good sets of carbs, they just need a refresh. I admit I don't have a quote on a sleeve job, but I imagine it would be a bit more manageable than the very dear £492.06 Amal has listed on their site for a pair. Also, one of the sets I'd like to revive is a 389 - 689 pair, and I haven't been able to find new 689s anywhere, so refurbishment is the only option as far as I know. I also have a pair of concentrics on a 73 commando that are original and otherwise quite serviceable, and I'd prefer to keep them but have them refreshed. Alas. It does seem the service is still available in the UK, I was just hoping to keep them on my own continent with the hope of keeping shipping costs lower.

mdt-son · Dec 1, 2025

Extract from Brit Biker Forum:

"Andy Hardan runs/owns/ took over ... Lund-machine service years ago , and operated out of Seattle ( Snohomish )
... still offering resleeving service , but now out of Texas .
He is now located in Springtown Texas USA and better than ever. Phone Andy at 206 799 1240. He is retired and still does mono blocks and concentrics. I have had him do over a dozen carbs in the last 20 years. Top notch service. Quick turn around too."

- Knut

Stephen Hill · Wednesday at 10:45 PM

concours said:
I would offer, that the availability of brand new Amals negated the need for the cottage industry.

JMWO

I am not sure I agree with that. Yes, I can buy brand new Amal concentrics. See below. For $633 US each.
In the not too distant past I could find somebody who would sleeve a carb for about $75.
Time for more cottage industry.

Amal Premier Concentric Carburetors - Choose Carb Type

Treat your old Triumph or BSA motorcycle to a new Amal Premier Concentric carburetor. Better fuel economy, throttle response while retaining the classic Amal look

www.classicbritishspares.com

concours · Thursday at 5:16 AM

Stephen Hill said:
I am not sure I agree with that. Yes, I can buy brand new Amal concentrics. See below. For $633 US each.
In the not too distant past I could find somebody who would sleeve a carb for about $75.
Time for more cottage industry.

Amal Premier Concentric Carburetors - Choose Carb Type

Treat your old Triumph or BSA motorcycle to a new Amal Premier Concentric carburetor. Better fuel economy, throttle response while retaining the classic Amal look

www.classicbritishspares.com

Please, tell us about your machining skills.....
Your experience....
I'll help you find a lathe to buy.

I speak from an economics standpoint. I'm in different machine shops every day.

While it makes for romantic tales for onlookers, doing machining work & losing money isn't much of a draw.

Sleeving Amals was born out of NECESSITY. That factor has changed with new carbs available.

Stephen Hill · Thursday at 10:07 PM

My comment had less to do with my machining skills (they are fine, thank you) or finding me a lathe (I have one, thank you).
And more to do with the economics of keeping classic bikes on the road.
I think it is great that we can buy "new reproductions" parts for these old bikes.
I was suggesting that $1300 for a couple of die cast carbs may create a market for re-sleeving.

Trevor Hallam · 2026-04-10T06:48:43-0600

That Amal Premiers are available is fantastic, but I also don't think that negates the demand for the ability to service older carbs. My original question that started this thread was because I had a set of left and right handed monoblocs, the 389/689 combo, and the 689s aren't available anymore, so refurbishment was the only option. I would have gone for a resleeve option when cleaning up my current 73 commando recently as well, that still has the original 932/26 932/27 combo. I'm no bolt counter, but it would have been nice to be able to keep the original carbs with the original stampings in service. We're definitely lucky to have options, its just nice to have more.

concours · 2026-04-10T10:12:00-0600

Stephen Hill said:
My comment had less to do with my machining skills (they are fine, thank you) or finding me a lathe (I have one, thank you).
And more to do with the economics of keeping classic bikes on the road.
I think it is great that we can buy "new reproductions" parts for these old bikes.
I was suggesting that $1300 for a couple of die cast carbs may create a market for re-sleeving.

Very well. Would you do the job for $75?

Stephen Hill · 2026-04-10T20:47:13-0600

concours said:
Very well. Would you do the job for $75?

Beats me. Ask Andy:
"Andy Hardan runs/owns/ took over ... Lund-machine service years ago , and operated out of Seattle ( Snohomish )
... still offering resleeving service , but now out of Texas .
He is now located in Springtown Texas USA and better than ever. Phone Andy at 206 799 1240. He is retired and still does mono blocks and concentrics. I have had him do over a dozen carbs in the last 20 years. Top notch service. Quick turn around too."

mdt-son · 2026-04-11T02:15:14-0600

Thread 'Sleeving Concentrics?'

Wednesday at 6:12 AM

Does anyone machine worn Amal Concentrics and install sleeved slides? Bruce Chessell has stopped doing them

Monobloc resleeve

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