I am involved in a project where I want to plug the lifter bores, or at least the oil supply to the lifter bores. They have bronze sleeves which I don't want to remove (in case I go back to using them). As best I can tell the hole to the main oil gallery to the lifters was drilled through the bore and then the sleeves inserted. Anybody ever done this and how or have a bright idea?
Thanks.
Plugging lifter bores
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Kevin Johnson
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Re: Plugging lifter bores
Buy some 1 inch diameter Teflon rod and make plugs. If you chill them you might be able to slip them in place without machining and then the coefficient of expansion differential will keep them locked into place.
You could also have them turned to the correct size and then drill a hole through the center axis to make a sort of expansion plug using a carriage bolt or similar.
You could also have them turned to the correct size and then drill a hole through the center axis to make a sort of expansion plug using a carriage bolt or similar.
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pamotorman
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Re: Plugging lifter bores
Have thought of something like this but couldn't figure material or how. this a good idea. Can then put a large washer on top to keep it from getting loose and dropping into the nether regions.Kevin Johnson wrote:Buy some 1 inch diameter Teflon rod and make plugs. If you chill them you might be able to slip them in place without machining and then the coefficient of expansion differential will keep them locked into place.
You could also have them turned to the correct size and then drill a hole through the center axis to make a sort of expansion plug using a carriage bolt or similar.
Kevin, I know you use a lot of Teflon with your scrapers (mine seems to be working fine) do you have a source you like?
Last edited by jacksoni on Mon Oct 27, 2014 8:21 pm, edited 2 times in total.
Re: Plugging lifter bores
I would but can't get at anything helpful. Main oil gallery (is only one) feeds mains and the lifters both and I can't get at the tiny holes that feed the lifters.pamotorman wrote:just plug the oil feed to the lifter oil gallery.
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Kevin Johnson
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Re: Plugging lifter bores
We have been purchasing from Professional Plastics for many years and are very pleased with their service.jacksoni wrote: Kevin, I know you use a lot of Teflon with your scrapers (mine seems to be working fine) do you have a source you like?
http://www.professionalplastics.com/
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Re: Plugging lifter bores
I ran a V/8 sb chevy block as a 4cyl. Machined lifter plugs from aluminum held in by a plates drilled and tapped in between each pair.