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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Wed Aug 08, 2007 6:16 pm Post subject: The SAGA continues |
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As most of you know, I recently had a comp cam go flat in my pickup requiring a complete overhaul. Bought all new bearings/rings etc, and a voodoo bumpstick of the same size as the comp.. bit more lift. Well, I fired it up a couple weeks ago. Sounded good.. but then the oil pressure went away. Cold I had 100psi!!! But after 2miles of driving it was down to 20psi unless you revved it. CRAP@!
I was fed up with it, so I left it sitting for a week. Last night I finally got the motor out and started lookin it over. I was figuring it was a bad pump, but really don't see much wrong with it. Didn't have any plastigauge so I left the bearings till tonight..
Tonight I start plastiguaging rod bearings.. they all look like brand new.. like they've never even been installed. Plastigauge checks out at 0.0015. Perfect.. on to the mains.....
Start with the #1 main. Bearing looks good, couple real small scratches from debris. Plastigauge says.... crap it didnt even crush. So I try again. Same thing. I try main #2, same deal. I take the bearings out.. look at the size 010 . I'm sure thats what my crank is.. it's even marked 010/010 on a counterbalance. I dig in the trash and come up with an old shell. Yup 0.010. I don't have a good caliper or mic so I grab an el cheapy.. even with that I can tell the old worn shell is thicker then the new one. Looks like sealed power sent me a mismarked set of main bearings!!!
This is the FIRST time I ever installed new bearings without plastigauging everything. I figured I knew the machine work on the crank was good allready. That's the most likely thing to be screwed up in a rebuild. Never figured the bearings would be sized wrong. |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Aug 08, 2007 6:27 pm Post subject: |
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Quasi-Traction "I have petals"

Joined: 24 Oct 2005 Posts: 3873 Location: stumptown
1986 Chevrolet Camaro Berlinetta
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Posted: Wed Aug 08, 2007 6:53 pm Post subject: |
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oooh geez......
I was pricing out stuff for the rebuild on my beat 350 and I had the SP bearings in mind....I'll be sure to double check if I buy em!
You've had some nasty luck with that thing so far....hope things improve. _________________
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Aug 08, 2007 7:26 pm Post subject: |
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| That's just one thing to bang into everyone's heads. Even when you think it's right, double check even what you purchased! |
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Schultzy89GTA M.R.A. (11sec Club)

Joined: 08 Jan 2004 Posts: 4417 Location: Gresham, OR
1989 Pontiac GTA
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Posted: Wed Aug 08, 2007 8:26 pm Post subject: |
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Ack!
Sorry to hear that Brandon. At least you recognized that things weren't right and pulled it again before worse 'badness' happened.
-Schultzy _________________ Red Sled: 89 GTA, 383, TKO, N2O
12.73 @ 109.39, 1.793 60 \ 11.794 @ 121.16, 1.62 60 (old combo) |
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83Z28BlackBetty Bam-Ba-Lam

Joined: 13 Mar 2006 Posts: 2083 Location: Aloha
1983 Chevrolet Camaro Z/28
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Posted: Thu Aug 09, 2007 7:06 am Post subject: |
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damn, good call on checking everything before it got too bad!
~JAKE _________________ 1983 Z-28 5.7 LT1, T56, Headman headers, BW 9 Bolt Posi Disc, WS6 suspension
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Thu Aug 09, 2007 5:14 pm Post subject: |
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Lesson here.. double check everything. I took an old shell and new one into work today and mic'd them... no difference. The bearing shell is indeed an 0.010.. So I borrow the mic's and come home to measure the crank.. got a nifty little gauge you can use to measure a crank without removing it from the motor. Crank reads 2.44" which is actually the tight side of an 0.010 journal. Hmmm..
So I decide to roll the upper shell out and I'll roll the old bearings back in and check the clearance on them.
I get the new upper shell out, look it over.. There's the problem!!!! They're marked STD!! Seems Federal Mogul sent me a bearing set with std upper bearings and 010 lowers = 0.008 in clearance. LOL. I did check the bearing size when I installed. But evidently I only ever looked at the lower halves.  |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Aug 10, 2007 9:06 am Post subject: |
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| Doh! |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Sun Aug 12, 2007 4:05 pm Post subject: |
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| Well looks like its finally all together. Got another set of bearings and the clearances are good. Another interesting deal, the rear main bearing, both halves were 010 like they should be. Only the front 4 upper halves were wrong. I now have 65psi cruisin at 1300rpm/60mph HOT.. Made a successfull trip to town and back. The voodoo cam has an interesting exhaust bark. Alot different sound then the comp xe. It also seems to be alot torquier. Very easy to spin the tires. Wagged the tail a bit gettin out on the highway. Then upon returning home I backed into the burnoff area and let em spin.. Parked in my parking spot, and who would you guess was the next car on the road.. Howdy mr officer! lol. |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Aug 12, 2007 10:48 pm Post subject: |
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| Hehe Just drop by to see what the Skamokawa Speed Shop was up to?> |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Mon Aug 13, 2007 7:20 pm Post subject: |
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I love my truck!
Coming out of town peeling through second while sliding sideways sawing away at the steering wheel, is what life is all about!! Jen said it was "impressive" (not in a good way).. I say "ya... but it sure was fun!"
Sloppin the rig into the corners is pretty fun as well. Not bad for a 37 year old piece of iron. |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Aug 13, 2007 7:37 pm Post subject: |
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| You rock man! There just isn't anything else that can be said. |
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Schultzy89GTA M.R.A. (11sec Club)

Joined: 08 Jan 2004 Posts: 4417 Location: Gresham, OR
1989 Pontiac GTA
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Posted: Mon Aug 13, 2007 8:42 pm Post subject: |
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Life is good.
-Schultzy |
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rjmcgee The Hammer

Joined: 08 Jan 2004 Posts: 2328
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Posted: Mon Aug 13, 2007 9:06 pm Post subject: |
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Right on!!
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Xophertony Rodeo Queen

Joined: 13 Oct 2005 Posts: 5306 Location: Portland, Oregon.
1988 Pontiac GTA
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Posted: Thu Aug 16, 2007 10:01 pm Post subject: |
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tp paraphrase the hammer, it's nice when a plan comes together.  |
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