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Old 01-27-2024, 05:14 PM
PontiacLars PontiacLars is offline
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Default Oil support rail gap

Ross pistons. 4.5" stroker, so pistons have oil ring support rails.
Ross instruction says gap should be minimum 0.010 and Max 0.187. I get 0.384. Is this a problem? Do I have the wrong support rings?

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Old 01-27-2024, 06:01 PM
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steve25 steve25 is online now
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Who supplied the support rails, Ross?

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Old 01-27-2024, 06:05 PM
PontiacLars PontiacLars is offline
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Yes. Everything came with rotating assembly from Butler. The instruction sheet from Ross says rails are for a certain bore range and they should fit my 4.160 bore. But I dont like that they get way bigger gap than What is recommended Max in the same installation sheet.

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