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Off Topic Off Topic - General non-Corvette related discussion. |
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02-04-2013, 1:01pm | #41 | ||||||
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You might get lucky putting in a cam and lifters, but, personally, I think it's a lot of work to put into an engine that's probably on it's last legs anyway. The crate engine makes sense if you're going to keep and drive the car for a while. I think I agree with Fastguy, that a cheap good running 350 from craigslist makes to most sense.
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02-04-2013, 1:44pm | #42 | ||||||
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from what I can see of the cam, it doesn't look bad. I rotated it with the lifters out, and didn't see anything unusual.
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02-04-2013, 6:18pm | #43 | ||||||
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I went and rotated the engine by hand, I measured each lifter's rise with a digital caliper, and each got to right about .3" (some variation of .005" or so, but I can't get my caliper square on the lifter)
So I guess that means my cam is good... I'm willing to bet that powder is left over from the heads being magnafluxed. |
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02-04-2013, 6:31pm | #44 | ||||||
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But, don't you have some horrendous internal noises too?
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02-04-2013, 6:39pm | #45 | ||||||
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there's a squeak, still have no idea what that is and it sounds like it's coming from the clutch... using a stethoscope, I only have the noise at the bottom of the clutch area, but if I move up 2 inches on either side, it becomes very subdued.
I never heard a noise besides the valve train. |
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02-04-2013, 7:30pm | #46 | ||||||
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Lifters are cheap. But, I have to wonder why you had so many bad lifters in the first place.
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02-04-2013, 7:37pm | #47 | ||||||
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no idea.
so the failed are exhaust: 1, 4, 8 Intake: 2, 4, 5 so I guess only 6. I plan on replacing them all, and I'd hate to get them and have still have to replace the engine, but I'd hate to replace the engine if the lifters fix it. |
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02-04-2013, 7:52pm | #48 | ||||||
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with that many failed lifters, i'd be seriously looking at minimum changing the cam.
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02-04-2013, 8:37pm | #49 | ||||||
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We've got an old '98 Honda Accord that we use to haul the dog around in, and it's got a magnetic drain plug on the automatic transmission. The first time I went to change the automatic transmission fluid(I'm thinking it was around 100,000 miles), I noticed that the drain plug was absolutely covered with very fine ferrous particles.
It didn't seem to hurt the transmission any as we have put many thousands of miles on that transmission and I have changed the fluid a couple of times since then too. I think if it was mine I would put in a new cam and lifters. Reassemble everything back together, change the oil, then run it for a little while. I'd then take an oil sample and send it off to see if metal particles are still being generated in the oil. Of course if the engine has a ton of miles on it, then I'd probably be looking to rebuild it or swapping it out for another. |
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02-04-2013, 8:39pm | #50 | |||||||
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02-04-2013, 8:42pm | #51 | ||||||
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02-04-2013, 8:48pm | #52 | ||||||
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02-04-2013, 8:49pm | #53 | ||||||
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if I go with a new cam and lifter, would I not then need new rods too?
Mine are still straight (i rolled them on a pane of glass) |
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02-04-2013, 8:59pm | #54 | |||||||
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I haven't changed a cam in 20 years so things may have changed, but I doubt they've changed too much. |
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02-04-2013, 9:54pm | #55 | ||||||
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Summit Racing® Cam and Lifter Kits SUM-K1102 - SummitRacing.com
? stock: Duration @ 0.050", 202/206, lift .403/.415 , Lobe seperation 115 degrees |
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02-04-2013, 10:05pm | #56 | |||||||
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02-04-2013, 10:08pm | #57 | ||||||
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02-04-2013, 10:10pm | #58 | ||||||
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02-04-2013, 10:19pm | #59 | |||||||
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I have the rockers loosened up so the valves will close, that's the racket. I tested the rotation on the cam, and all the lifters go up the same distance (.3 inches) There's no shiny metal bits anywhere, just that powder, but it's not actually on any components, which is odd. I finally was able to talk to my Father-in-law, who used to run a repair shop, he recommended throwing in some new lifters and see what the does. Worst case scenario is that I get a new set of lifter for the next engine... I don't know, everything I found points to just the lifters. The squeak is baffling, but once I pull the pan, I should be able to see more. |
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02-04-2013, 11:23pm | #60 | ||||||
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What is the oil pressure like at idle?
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