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RINGS 1/16 or .043

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Wheelie58
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Post  460Dave October 6th 2015, 10:30 am

Ok, I'm trying to get some pistons built (Diamond) and having some challenges determining the best ring pack to ask for. 4.600 x 4.5 (6.8 rod) nitrous (5-600 shot) drag engine. Less than 100 passes per year. The plan is to have lateral gas ports added. The engine has a good vacuum pump, but will be wet sump. I plan to use Ackerly and Childs rings.

This seems to be what my research has determined. Please weigh in if you think it should be different. What can I expect for longevity/durability?
.043 back cut HTD top
.043 napier style second
1/16 oil standard tension

460Dave

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Join date : 2009-08-21

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Post  gt350hr October 6th 2015, 1:10 pm

460dave,
Ackerly and Childs are good peiople to deal with. Make sure the top ring they supply you is not a moly faced ring as you are spraying too much NOS for moly to survive. A napier second ring wouldn't hurt either. Give the rings plenty of gap ,a factor of .007/inch of bore should be fine.

gt350hr

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Post  Lem Evans October 6th 2015, 1:33 pm

The HTD top ring he listed is an A&C NOS ring.

Lem Evans

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Location : Livermore , Ky

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