Jubilee barrel cracks

Ouch! I’d say that has been hit or dropped sometime in its past, never seen a crack like that. 

What bore is the barrel on? A secondhand one might be an easier bet? 

Dan 

I had mine re-sleeved by Meridian Engine Services in Cambridge. I supplied my own sleeves (liner) courtesy of NOC shop but Meridian said they could supply them. They did a fine job at a reasonable price.

Home Page (meridianengineservices.co.uk)

Given that Jubilee pistons are as rare as hens teeth you might want to re-sleeve the barrel and bore to the size of your piston if it is in good condition.

Dennis

Hi Kieren,

The barrels may look like they have liners - BUT THEY DO NOT.

I cannot imagine how yours got damaged.

It looks like you may need to find another barrel, or have a liner fitted to yours.

Depends on size, & if other side is damaged. Do not run with odd sized pistons (I have seen it done) - keep both pistons the same.

Left & right barrels are slightly different - but can be made to fit either way round, if it helps.

Pah! Back in the day my 40 tho over piston cracked, and the barrel was scored but I could only get one 60 tho oversize piston so fitted that. While I wouldn’t recommend it the jub ran fine for the rest of its life! 

Dan 

Kieren,

There are barrels and conrods for sale on ebay at the moment.

Despite what Andy says, I bought a barrel and two liners from NOC shop and had them fitted at Meridian because I also bought a pair of standard size pistons also from NOC (when they stocked them!). I don't doubt that the barrels had no liner originally but Meridian did fit my liners and bored/honed them to fit the new pistons so it is possible.

Dennis

The only difference between the barrels as I recall I’d that the RH barrel has its fins trimmed a little to clear the timing case. 

I did it a while ago and my memory is a bit foggy but it was very straight forward esp as you have a barrel as a template.

Dan 

In the photograph that Kieran submitted in the original posting, the "crack" appears to be above the travel of the rings.

Since this is in a non-stressed area, could not the area just be welded and ground back to flush?

Mike

Hi 

I have a couple of sets of jubilee barrels for sale if interested, I can send pictures also

Cheers

Simon

Hi Michael, I too thought that and if that is the extent of the damage I agree with you. However, (and hopefully Kieran might confirm), it looks like the crack runs down and then around the bore? If this is the case, then even a liner might be risky as there may not be enough support or good enough interference fit possible to get good heat transfer.  If the crack is as I think it is, then the respondents who say its new barrel time are, to me, right.

Regards, George. 

A repair as Michael suggests should be quite an easy repair for them to do, and hopefully at a lot less cost for you. Just make sure the outside of the spigot is dressed back too.

Regards, George.