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Old 03-06-13, 06:58 PM   #1
wolseley phill
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Default Lister A Piston Ring Gap?

Hi all,

Can anyone advise on what the piston ring gap for my Lister A type should be?

It has a 3.75" bore.

Many thanks,

Phill.
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Old 03-06-13, 07:07 PM   #2
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I was always told 4 thou per 1 inch of bore.
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Old 03-06-13, 07:12 PM   #3
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Quote:
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I was always told 4 thou per 1 inch of bore.
Yep that's correct, plus a little more on aircooled engines.

Pete.
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Old 03-06-13, 07:18 PM   #4
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Just dont look on the restoration page,its a bit warm on there at the moment.
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Old 03-06-13, 07:59 PM   #5
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Quote:
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Just dont look on the restoration page,its a bit warm on there at the moment.
Wimp :-) Let's just say opinions vary!

NHH
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Old 03-06-13, 08:18 PM   #6
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Wimp :-) Let's just say opinions vary!

NHH
It depends on if you want to restore your engine properly or just bodge it up lol
Stephen :)
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Old 03-06-13, 08:19 PM   #7
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Thanks folks, so that's a 15 thou" ring gap.

I'll stick with the old methods me...

Cheers folks!

Phill.


(btw I wasn't posting this in response to the convo' on Mr Nutgone's thread, genuinely needed a sensible answer!)

Last edited by wolseley phill; 03-06-13 at 08:43 PM.
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Old 03-06-13, 08:36 PM   #8
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About a thumb nail.

Same as a spark plug, and points gap is a rizla paper folded twice.
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Old 03-06-13, 08:46 PM   #9
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Quote:
Originally Posted by wolseley phill View Post
Thanks folks, so that's a 15 thou" ring gap.

As an apprentice engineer I don't yet have all the paperwork to prove I am an engineer....

I'll stick with the old methods me...

Cheers folks!

Phill.


(btw I wasn't posting this in response to the convo' on Mr Nutgone's thread, genuinely needed a sensible answer!)
So not the 8-12 thou Martin quoted as the Lister factory figure then?

NHH
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Old 03-06-13, 08:47 PM   #10
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Quote:
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So not the 8-12 thou Martin quoted as the Lister factory figure then?

NHH
I'd like to know where that came from (not saying it's wrong etc etc...) but I spent a while looking in the manual for my engine and couldn't find it anywhere. If there is a data sheet with more info on settings/ running clearances for the A type I'd very much like to see it.

Phill.
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