Problem fitting standard adjustable lifters
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1915ford
Topic author - Posts: 110
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Problem fitting standard adjustable lifters
Doing a full rebuild on my 22 centerdoor engine. Everything shows minimal wear so i ordered standard adjustable lifters. The problem is they wont go into the block. They seem to be one or two thousandths too big. Suggestions? Is there a reamer out there that would work for this?
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Scott_Conger
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Re: Problem fitting standard adjustable lifters
I would start with:
what exactly is the diameter of the lifters?
what exactly is the diameter of the lifter bores?
what exactly is the diameter of the lifters?
what exactly is the diameter of the lifter bores?
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves™
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves™
Obsolete carburetor parts manufactured
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Adam
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Re: Problem fitting standard adjustable lifters
Fairly common. Tooling wore and the factory put undersize lifters in instead of replacing the tooling (or they made the guides undersize to use up undersize tappets). I’ve seen it probably about a dozen times. Run a 7/16” reamer thru the guides to take them from undersize to “standard” and your “standard” lifters will fit fine. There are a bunch of parts like these when you get into blueprints in the archives. They generally say something to the effect of “use when …. is undersize/oversize”.
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jsaylor
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Re: Problem fitting standard adjustable lifters
Before you start reaming out the block, follow Scott's advice and measure the new lifters and make sure the vendor sent you the correct ones.
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1915ford
Topic author - Posts: 110
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Re: Problem fitting standard adjustable lifters
Thanks Adam. Thats exactly what i needed to know.
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Dan Hatch
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Re: Problem fitting standard adjustable lifters
Measure twice, cut once. That hold true here as well.
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Chris Bamford
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Re: Problem fitting standard adjustable lifters
I cut this damned board twice, and it’s STILL too short!
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BRENT in 10-uh-C
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Re: Problem fitting standard adjustable lifters
Mark, see if a local machine shop can hone the lifter bores for you instead of reaming.
It has been my experiences that most chucking reamers need a minimum of about 2% of the diameter (-in this scenario about 8 thousandths) to keep the flutes loaded during the cutting process. Otherwise, you generally get chatter marks in the bore finish which will lead to galling. Any performance machine shop should have a Lifter Hone, and likely two or three strokes will size them for your new lifters. If you cannot find a shop, then order a set of 0.015" over tappets (0.452) and purchase a 0.4535" Reamer from McMaster, and that should put your tappet clearance to around 0.0015 which should be perfect.
It has been my experiences that most chucking reamers need a minimum of about 2% of the diameter (-in this scenario about 8 thousandths) to keep the flutes loaded during the cutting process. Otherwise, you generally get chatter marks in the bore finish which will lead to galling. Any performance machine shop should have a Lifter Hone, and likely two or three strokes will size them for your new lifters. If you cannot find a shop, then order a set of 0.015" over tappets (0.452) and purchase a 0.4535" Reamer from McMaster, and that should put your tappet clearance to around 0.0015 which should be perfect.