Ring gap

The 4A, 4AB, 4AC, 4AD cars, including the SM 1500 Roadster and SMX
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Michael Denmark
Posts: 62
Joined: Wed May 28, 2008 7:27 am
First Name: Michael

Ring gap

Post by Michael Denmark »

Does any know the specifications :

Piston clearance top/bottom of skirt.
Ring end gap .

For the 1074 cc engine. ( + 0.02")

Michael , Denmark
BRG
Posts: 310
Joined: Sun Nov 27, 2005 4:33 am
First Name: Dave
Location: Tucson, Arizona

Re: Ring gap

Post by BRG »

Michael,

Piston to cyl wall clearance should be .001 to .002"inch. This shold be measured 90 degrees from the piston pin area.
Rule of thumb for piston ring end gap is .004" inch per inch of cyl diameter. So if the cyl bore is 2.5" diameter you should have .010" end gap.
BRG
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Owner of a 1952 4AD, 1959 Singer Gazelle Estate, & 1959 Gazelle Convertible
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