Re: What happened to these lifters?
[Re: rowin4]
#470489
09/16/09 10:45 PM
09/16/09 10:45 PM
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DLP4
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Quote:
Looks like the lifters didn't rotate .If the lifter is stuck in one position the cam will grind it off. In the picture ,is that rust on the lifter?
No rust. That's chewed up metal from galling. If you look at the one on the right the lifter was already galled pretty good but only had slight wear on the face indicating the galling happened first and prevented it from spinning. Then it started eating the lobe. That's why I'm thinking it was a lifter oiling problem
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Re: What happened to these lifters?
[Re: DLP4]
#470490
09/16/09 10:49 PM
09/16/09 10:49 PM
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sixpackgut
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the galling appears to be where the oil gallery is, maybe the bore needs to be checked there and honed
Last edited by sixpackgut; 09/16/09 11:50 PM.
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Re: What happened to these lifters?
[Re: rowin4]
#470492
09/16/09 11:17 PM
09/16/09 11:17 PM
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Anonymous
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it's ahrd to tell from that picture, but if that's galling, it appears to be right in the area where the oil gallery intersects with the lifter bore. is ther some sharp edges there, or perhaps the lifter bores are not properly sized for clearance as well.
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Re: What happened to these lifters?
[Re: DLP4]
#470494
09/16/09 11:27 PM
09/16/09 11:27 PM
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Anonymous
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Quote:
Here's another shot. The galling is in two places on each lifer and is directly on either side of the oil gallery. I don't have tools to measure the lifter bores but when I slid a "good" lifter into the bad bore it slid right thru
what brand of block, what brand of lifters and what does the lifter bores look like? have you measured them or the lifters?
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Re: What happened to these lifters?
#470495
09/16/09 11:29 PM
09/16/09 11:29 PM
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Anonymous
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can you rotate the lifters and take another pic like the last one to show the galling on the other side?
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Re: What happened to these lifters?
[Re: DLP4]
#470497
09/17/09 01:13 AM
09/17/09 01:13 AM
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i only expected to see one side at a time. are all the lifter bores galled or just those two?
i was also looking at how the wear goes all the way to the edge of the lifter, almost like the lfter is too loose in the bore, or indexed incorrectly, or both. typically galling would occur from lack of oil and from being too tight in the bore though. can you get a picture of the lifter bore?
Last edited by DRAM_Perf_Only; 09/17/09 01:15 AM.
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Re: What happened to these lifters?
#470498
09/17/09 03:29 AM
09/17/09 03:29 AM
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This is both sides of the same lifter bore. In a previous post 1_WILD_RT told me about ZDDP being removed from oil. I wasn't aware and was using Castrol GTX. Could it be as simple as using the wrong oil? Dan, I went to look at your catalog and there were script errors and pictures not showing up, just red "X"s. Might want to fix it
Last edited by DLP4; 09/17/09 03:43 AM.
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Re: What happened to these lifters?
[Re: DLP4]
#470499
09/17/09 06:06 AM
09/17/09 06:06 AM
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the length of the wear on the lifters seems to correlate to the amount of cam lift from the bottom of the lifter bore upwards. check the bottom of all the lifter bores for sharp edges. you mentioned that a new lifter falls right through. you could use a snap guage and a mic to measure the bores, or a burnishing ball as a go/ no guage guage. do other lifter bores show the same wear, even if it's not as bad as the one in the picture? anyway, normal side loading in a properly sized bore without sharp edges shouldn't have those issues. check size, roundness and look for sharp edges. i bet the root cause of the problem becomes evident very quickly.
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Re: What happened to these lifters?
[Re: S/ST 3040]
#470501
09/17/09 08:48 AM
09/17/09 08:48 AM
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JohnRR
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Quote:
Is it possible there was machining residue or sand left in the oil galley? Were these from cylinders #7 or #8?
That is completely possible , not sure if this is an store bought crate motor but I took apart my Hemi Crate motor because I didn't want to see something like this happen to it , I found one lifter that would not rotate.
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Re: What happened to these lifters?
[Re: JohnRR]
#470502
09/17/09 08:46 PM
09/17/09 08:46 PM
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All the bores have light scuffing in the same area. These are pictures of that. I don't have many machinist tools but I was able to use a .0005" indicator and rock one good lifter in one bad bore and 2 good bores and they all had .0015" of travel. No burrs that I could detect. Some of the edges are sharp but not burred. Cylinders #5 & #6 had the problem with #5 being the worst The engine was built by a local hemi "expert". Not a crate engine. How do you check if the lifters are rotating properly?
Last edited by DLP4; 09/17/09 08:50 PM.
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Re: What happened to these lifters?
[Re: DLP4]
#470503
09/18/09 12:26 AM
09/18/09 12:26 AM
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Quote:
How do you check if the lifters are rotating properly?
What I do is match mark the lifter and boss then rotate the crank about 4 or 5 complete cycles. I'll look to make sure all the lifters rotated about the same amount. Don't know if that's proper, though...
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