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Old 10-27-2020, 03:37 PM
v8volvo v8volvo is offline
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Join Date: Jun 2009
Location: Montana, USA
Vehicle: '86 745, '83 764
Posts: 1,618
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Great news

Coming back to your question from your first post -- now that you have the main issue squared away you still may want to go back and re-check valve clearances (cold engine) all the way around and adjust as necessary. Even though the valvetrain wasn't involved in the compression loss problem, you still will want to get those clearances set correctly to spec, especially if they are already a little tighter than they should be. For one thing, if the new head got a valve job, then the clearance may decrease faster than usual in the first few thousand miles as the seats and valves go through their initial wear-in process. You don't want to let it get away from you and tighten up to where the clearance goes to zero.

[That is, if your engine has mechanically adjusted solid lifters -- which we assume it does since you mentioned shims -- but are you sure that is the case? The late '80s or early '90s vehicles in your profile might have had hydraulic valvetrain from the factory, requiring no adjustment, unless the engine was at some point changed for an earlier one....]

Either way nice work, sounds like you did a lot of good refurbishment and gave this engine a new lease on life.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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