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Oh no - not trying anything *else* new on my PV engine. Roller lifters would involve a new cam and I'm not about to take out my brand new Isky VV71 and new set of SBC lifters and my MG-TD pushrods!
Those rollers with the arms must have a slot instead of a hole in them. The length between those points will change as they go up and down independently. There probably isn't much sideways force on them, they just need a gentle point in the right direction I'd guess. Although that makes me wonder - do roller cams need to have the lobes gorund flat and centered in the bores?
KgTrimning sells mushroom lifters. I can't recall if it takes a little machining in the block or not - probably providing a little clearance on the bottom side of the lifter bores. I have a catalog at home, I could try deciphering a little of the Svedish on the mushroom lifter decription to see. They look to have just a little extension on the bottom, protruding maybe 1/8" around the bottom edge. I didn't see a picture on their website (www.kgtrimning.com) or I'd have linked it.
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I'm JohnMc, and I approved this message.
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