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lifter tightness?

posted by  greezy on  Fri Feb 17 21:07 CST 2017
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last visit: Sun Sep 4 21:21 CST 2011
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Hello. I am assembling a B20, and I would like to know a method of gauging whether the lifters are a proper fit in their bores.

I am following the Vclassics excellent instructions for this engine work. If I coat the lifters with STP/oil (a 50/50 mix as per the guide) then none of them will drop through the bore by their own weight. I am guessing that this test is affected by temperature and it's in the 40's in my work space. If I clean bores and lifters with a degreaser and then lacquer thinner, the naked lifters drop straight down, ke-chunk.

Will a coating of 30-wt tell me if they have good enough clearance?

Any ideas? TIA, greez








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    lifter tightness?

    posted by  riverbend on  Sat Feb 18 07:43 CST 2017
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    last visit: Wed Oct 22 15:29 CST 2014
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    The only real way to tell is to measure the lifters and the bores and see that there is enough clearance. Volvo motors do not seem to be hard on lifters and bores. If the bores and lifters are not scored and they fit well, you are good to go. Don't worry about them not falling in under their own weight when coated with oil, the valve springs will push them down. 50% STP at 40° is going to be pretty sticky.

    Greg






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