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G'day Everyone,

I need a pair of new liners for some T100 barrels I've recently purchased. They didn't come with the original liners. The barrel measures up at 2.670" Does anyone know what they should be standard and how much crush there needs to be between the barrel and liner? I see Hepolite make liners but I can only find info on the bore size not the O/D

Cheers

Pete

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I just measured the old original liners from my T100 (because I never throw anything out) and they came in at 2.672 inches. I just assumed the replacements were correct when I swapped them over and didn't bother measuring them.


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Thanks Tasman.
I'm not sure .002" is enough crush. I think over size liners maybe available. I'll continue researching.

Cheers

Pete

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If I had a set of alloy barrels that needed new liners I would have alloy liners fitted with a Nikasil coating. PES in the UK can do it, EdV would be the one to ask in the US.

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Originally Posted by 58thunderbird
Thanks Tasman.
I'm not sure .002" is enough crush. I think over size liners maybe available. I'll continue researching.

Cheers

Pete



Depends on the manufacturer of the liner. Different cast iron material used in casting the liner will expand at different rates. Wherever the liners were made instructions should be recommended accordingly. I think .002 interference fit is what you need for the original liners for that bore size. Instructions included with this liner say to bore the block to the OD shown, 2.670".


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Hi All,
Old alloy cylinders "relax" over the years and lose the interference fit on the liners, This corresponds with your measurements and those
on the liner box in the photo where those liners would only be size for size
Look at your cylinders for oil / carbon staining in the bores?
Vincent cylinder muffs do this spectacularly !!!

On the T100 I built about 10 years ago I had the alloy cylinder bored true and custom oversize liners made
Unfortunately the business that did that is no longer in business

John

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Here are the instructions from inside the Hepolite liner box. If you have to go oversize to clean up and square your bores I would contact LA Sleeve. Again, go by their instructions as they use a different cast iron material then the "Vacrit" that Hepolite used.

Secondly, there was an early and late liner and the difference is the recess in the combustion chamber for the protruding spigot on the liner. Check which head you have or will be using for the correct dimension.


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