04-16-2013, 10:03 AM | #85 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Lol really? It must not get many Camaro's then, cause they have been failing since 1998! Just search here on this forum or on Ls1 tech, corvette forums, Ls1/2 GTO, yellow bullet take a pick your bound to see many. You'll also see DOD lifter failures and chain tensioner failures.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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04-16-2013, 10:14 AM | #86 |
Drives: 2011 SSm6 Join Date: Oct 2011
Location: St.Louis
Posts: 355
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High volume dealer, over 200 cars sold a month. I've seen plenty of DOD lifters on 5.3's with bad maintenance done to them, a few oil pumps on DOD silverado's. Have worked in a GM dealership all through the advent of ls stuff. Never saw an oil pump failure on a c5, c6 vette or 4th or 5th gen f bodie's. Not saying it doesnt happen, just seems like a phenomen when people gather in an internet forum all having the same problem. The internet can have a tendency to sensationalize these kind of deals. Haven't seen a chain tensioner fail either, but there could be alot broken out there that never get seen, not like anything is bound to happen if the tensioner is broken, they can be run without one.
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04-16-2013, 12:07 PM | #87 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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It does look stuck open doesn't it?
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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04-16-2013, 01:31 PM | #88 | |
Autoboticus Roboticus
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Quote:
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04-16-2013, 01:50 PM | #89 |
If my oil pump ever does this, I'm gonna try the gas cap trick.
It usually works pretty good. |
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04-16-2013, 02:07 PM | #90 |
04-16-2013, 02:09 PM | #91 |
04-16-2013, 02:47 PM | #92 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Debri or because of the 2 different materials and the heat will cause it to seize.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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04-16-2013, 02:48 PM | #93 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Just upgrade to a melling 10296 while your in there and you'll be fine.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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04-16-2013, 03:26 PM | #94 | ||
Drives: 2SS/RS L99 BLACK Join Date: Apr 2010
Location: Franklin , MA
Posts: 6,696
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Quote:
Quote:
I pulled the pump today, the valve is definately stuck. In the pics above the area mentioned is the relief valve but you cannot see that it's stuck in the photo's. The openning that is visable is not the relief port. There isn't any debris in the bore. I had to persuade the valve to come out, then cleaned the bor and checked for any burr's etc and found none. Putting the valve back after the cleaning did nothing to free it as it was stuck in the bore upon re-installing it. I examed the valve and the bore carefully and what I found was the bore had scuffing right about where the top of the valve sits . The scuffing looks typical of other aluminum bores after useage. I am thinking that the valve's constant movement eventually scuffs the bore, as the scuffing increases the valve eventually sticks. I am going to clean it all up and see if I can get a couple of pictures of it. |
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04-16-2013, 04:54 PM | #95 |
Drives: 2SS/RS L99 BLACK Join Date: Apr 2010
Location: Franklin , MA
Posts: 6,696
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Now with the pump disassembled you can see it's a pile of crap. The valve and bore have a good amount of scuffing, some severe. this causing the valve to stick. The face of the gears and pump cover as pictured yesterday do not have excessive wear, however, the thrust side against the aluminum pump body is another story, there is significant wear and scuffing on both the gears and especially the pump housing. The rotors have a good amount of wear as well. The wear in the pump is obvious but would not cause a loss of pressure, yet, but the stuck valve is definately the culprit. I do change my oil and filter regularily so I am thinking this is typical as mileage increases.
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04-17-2013, 04:53 AM | #96 |
Thanks for the pic, and you're right!
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04-17-2013, 09:41 AM | #97 |
Drives: 2010 2SS Join Date: Jan 2013
Location: Corpus Christi TX
Posts: 634
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This is very interesting.
I have 120,xxx miles on my L99.. so Now im abit worried. I was considering reusing my oil pump for my cam swap.. but now it has me somewhat paranoid.
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04-17-2013, 09:43 AM | #98 |
Drives: 2010 2SS Join Date: Jan 2013
Location: Corpus Christi TX
Posts: 634
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I guess for comparison purposes, what weight and brand oil were you using?
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