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PFM
Join Date: Dec 2009
Location: Southern California
Posts: 290
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930LDR,
Nice work, the spun bearing makes sense at idle, my guess is oil pressure was a bit low at idle and got it. I would replace that rod regardless to how it checks out. How is the crank? Looks like you will need a piston now for sure.
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Stay Tuned, PFM |
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03-05-2011, 11:16 PM
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Registered
Join Date: Jun 2003
Location: St Petersburg, FL
Posts: 3,814
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Good work Rob, glad you managed to get in there.
Last edited by 350HP930; 03-06-2011 at 11:43 AM.. Reason: typo |
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03-06-2011, 07:16 AM
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Registered
Join Date: Dec 2004
Location: Danville - CA
Posts: 1,259
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Quote:
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Rob Montgomery '88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running |
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03-06-2011, 11:26 AM
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Senior Advisor
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Keep the piston and rod and mount it on a wooden base and hang it in your garage as a subtle reminder of the cost of speed!
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08 Cayenne Turbo |
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03-06-2011, 12:39 PM
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Join Date: Dec 2004
Location: Danville - CA
Posts: 1,259
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As I'm looking at P&C options... any thoughts or recommendations on staying 3.3L or going 3.4L (or 3.5L)?
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Rob Montgomery '88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running |
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03-06-2011, 08:57 PM
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Registered
Join Date: Jul 2010
Location: Lithia, FL
Posts: 1,265
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I read once that a good reason to go to 3.4L jugs & slugs is cuz the aftermarket cylinders run cooler due to a different fin arrangement then the OEMs, but I don't have 1st hand knowledge if it's true or not. Also, if you go larger then 3.4L then you have to bore out the case some to make room for the larger slugs.
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FS 1987 930 DTAFast EFI w/Electronic Dash, 17x9x11" Lindsey Racing Fuchs, Andial 8.39 R&P, C2 Intake, SuperCup Cams, Flame Ringed Heads & Cylinders, TurboKraft Full Bay Intercooler, RearlyL8 Twin Scroll Headers, Big Bullseye Twin Scroll Turbo...SOLD 1999 Harley Davidson Custom 1250 Hardtail Bobber..SOLD 2014 BMW X6M, 2012 BMW 128i, 2014 GMC Sierra, 2015 Cobia 237 Center Console 300hp Yamaha Last edited by CaptainCalf; 03-10-2011 at 08:22 AM.. Reason: spell |
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03-07-2011, 03:52 AM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Great job getting that piston off. I am sorry I missed the point that the engine seized. I thought it was free and then was stuck after you put the top-end off.
Can you cut the remainder of that piston in half so we can get a measurement on the crown thickness? This is important for those who want to cut valve pockets in stock pistons. Thanks.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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03-07-2011, 04:56 AM
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Well, I stand informed - a spun bearing under minimal load. Does that mean we should thrash them more regular?
I guess you had no other option. I cant see what else you could do, altho there have been many spun 930 bearings before. I guess it depends where the crank stopped and you drew the short straw. Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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03-14-2011, 12:26 AM
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Registered
Join Date: Dec 2004
Location: Danville - CA
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Sorry... been off for a while on business...
Jamie - Don't mind cutting the piston and taking some measurements for you. Alan - Definitely drew the short straw although a couple of the pistons had some detonation damage (including this one) so it would have needed to be replaced anyways...
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Rob Montgomery '88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running |
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06-14-2011, 07:01 AM
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