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Car Forum / Antique and Collectibles / Studebaker / September 2005lifter clearance
hello im rebuilding a 170 flathead from my lark.i need to know if .002 - .003" is too loose for the lifters.i measured the lifter bores and they are .625 - .6255. the lifters are .622 - .623. since the book doesnt really say (i couldnt find it if its in there)i figured that i could get an answer here. thanks in advance homer Odd. The block is supposed to wear, not the lifters. The wear limit is around .0035", which seems like too much. Ask a vendor or someone to measure a new lifter to determine if you should go to .001" oversize lifters. > Odd. The block is supposed to wear, not the lifters. The wear limit is > around .0035", which seems like too much. Ask a vendor or someone to measure > a new lifter to determine if you should go to .001" oversize lifters. dwain thanks for the reply.that is odd considering that the block is supposed to wear. the block was measured by myself and a machinist friend of mine and we both came up with the same thing.we both used snap gages and a micrometer so i tend to think the lifter bore size is correct. i know nothing about the engine except it was blown up a long time ago and sat for at least 10 - 15 years. i have the car and the odometer says 53,663 possibly rolled over once. but i did notice the block has a bunch of keystone symbols with numbers stamped in the symbols. and the block is stamped with a serial number for 1959 which is what year the car is. so its anybodys guess as to what has been to the engine in all these years. thanks again homer Ah yes! The keystone! Sometimes described as an arrow head with blunt tip. Not to be confused with the cloverleaf stamp on HD truck engines. You have a factory replacement engine, but no one seems to know for sure why the cloverleaf is on some of these engines. Most of them have a totally blank number pad. Original engine numbers were supposed to be stamped into the new engine by the installing dealer. Most weren't! > Ah yes! The keystone! Sometimes described as an arrow head with blunt tip. > Not to be confused with the cloverleaf stamp on HD truck engines. [quoted text clipped - 3 lines] > Original engine numbers were supposed to be stamped into the new engine by > the installing dealer. Most weren't! The engine in my car actually has a keystone stamped under where the oil filler block-off plate screws on. Would have never seen it had I not gone to install my shiny finned aluminum stuff. nate  Signaturereplace "fly" with "com" to reply. http://home.comcast.net/~njnagel dwain i emailed cathcart's and they said .624" for standard size lifters. so i guess i can go with standard size lifters. thank you homer That is very interesting. Before this I would have thought that the lifters could be expected to show very little wear. Dwain, I always measure the OD of the regound lifters I get. I have gotten a handfull over the years that were significantly worn. Paul Yes it's the block that 'supposed to wear' but I've seen worn lifters just as much as I've seen a worn block. I have some NOS lifters around here someone, I could 'mike' them if that would help. Joe > hello > im rebuilding a 170 flathead from my lark.i need to know if .002 - [quoted text clipped - 4 lines] > thanks in advance > homer Great. Find out if they're Std. or OS? STD are still available for the 6. OS, needed when the block shows ware of .001, or greater, aren't. I've been trying to find a set of .001 to .005 OS. Bo > Yes it's the block that 'supposed to wear' but I've seen worn lifters just > as much as I've seen a worn block. I have some NOS lifters around here [quoted text clipped - 10 lines] >> thanks in advance >> homer Has anyone had any luck getting the lifters centerless ground and hard-chrome plated to bring them out to .001" oversize? Gord Richmond |
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