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Mike the mechanic's Avatar
 
Join Date: Nov 1999
Location: Montreal, Canada
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Unhappy Calling all G50 experts!

Hey guys, so yesterday, I was getting my car ready for a track event today, and decided to change my tranny oil with mt-90.
Upon removing the drain plub, I found 8-9 needle bearings on the drain plug magnet.
Then I remembered that I had recently started hearing a strange grinding/whining sound in any gear at low rpm/high load. The noise would clear out after 2800rpm. Sounded like a ring and pinion noise.
Anyway, I am hoping that these needle bearings are from the diff area, which would not require an engine/tranny drop, but I do not know g50 trannies well enough to know where these bearing bits could have come from. Anyone know?
Thanks!!

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Old 06-18-2007, 05:40 AM
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Those look like needle bearings from any one of the gearshaft needle cage bearings upon which the gearsets ride. That's not a good sign and you should open up the transmission to see which bearing cage has disposed of those needles!
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Old 06-18-2007, 06:06 AM
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Wow! Bummer. That can't be good. Good luck.
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Old 06-18-2007, 06:13 AM
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Thanks guys, so definately need to drop the tranny and open it up. AHHHH! I have no time for this, so I won't be enjoying my car this summer
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Old 06-18-2007, 06:21 AM
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The diff's spider gears run on those needles. They are separated by a spacer that gets pinched and then cracks. When the needles spill out, they are free to migrate around the transmission (and a few may get ground up in the meshing R&P). There are a couple cures for this... I'll try to scan something today.
Old 06-18-2007, 07:21 AM
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Geary, thanks, you gave me some hope! I patiently await the scan!
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Old 06-18-2007, 07:29 AM
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There's a clue in your sig. These cars aren't made for drag strips.
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Old 06-18-2007, 08:36 AM
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With a few mods, the G50 is successfully used for drag racing (although the earlier 915's definitely won't survive for long ... )
Old 06-18-2007, 08:43 AM
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Quote:
Originally posted by ZOANAS
There's a clue in your sig. These cars aren't made for drag strips.
Racing is racing my friend. I believe that a true sports car can do anything well. Don't you think?
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Old 06-18-2007, 08:49 AM
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Quote:
With a few mods, the G50 is successfully used for drag racing (although the earlier 915's definitely won't survive for long ... )
let me guess... needle bearing mods?
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Last edited by ZOA NOM; 06-18-2007 at 08:53 AM..
Old 06-18-2007, 08:50 AM
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Quote:
Originally posted by Mike the mechanic
Racing is racing my friend. I believe that a true sports car can do anything well. Don't you think?
I suppose, but these cars are designed to corner. You can go straight faster and much cheaper in other cars. It's just my opinion. I hate seeing these cars die a slow death on a track they weren't meant for. They belong on a road course.
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Old 06-18-2007, 08:52 AM
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In the past, Porsches have definitely NOT belonged on the strip. But with the G50 trans, spool (or LSD), and 1st-4th dog box conversion, Porsches are whipping a** in the quarter mile.
Old 06-18-2007, 09:22 AM
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Mike, I'm having file size problems in storing my "fix" page on a friendly server. However, I'd be more than happy to mail the page to you, if you (or anyone else) PM me directly at:
gtgears@yahoo.com
Old 06-18-2007, 09:27 AM
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Quote:
Originally posted by Geary
In the past, Porsches have definitely NOT belonged on the strip. But with the G50 trans, spool (or LSD), and 1st-4th dog box conversion, Porsches are whipping a** in the quarter mile.
Your mullet is showing.
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Old 06-18-2007, 06:13 PM
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Well, your tits are showing ...
http://www.thesamba.com/vw/forum/album_page.php?pic_id=296774
Old 06-18-2007, 06:36 PM
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Ooooo. That cannot be goood..........
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Old 06-18-2007, 07:51 PM
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Quote:
Originally posted by Geary
Well, your tits are showing ...
http://www.thesamba.com/vw/forum/album_page.php?pic_id=296774
I rest my case.

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Last edited by ZOA NOM; 06-18-2007 at 08:32 PM..
Old 06-18-2007, 08:12 PM
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I'll take bouncing boobs over a mullet any day of the week!
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Old 06-18-2007, 08:30 PM
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Mike's needles weren't the result of drag racing.

The car in the photo was an early parts tester.

The G50 dog box conversion (that happens to do well in drag cars) is the DIRECT predecessor to the GT3RSR and Cup sequential transmissions used by Porsche today.

http://www.thesamba.com/vw/forum/album_page.php?pic_id=360388

Old 06-18-2007, 08:33 PM
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