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spuggy spuggy is offline
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Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 2,835
Originally Posted by NathanUK View Post
Im guessing you could see the two shafts were trying to get away from each other?
The bearings had been spinning in the intermediate and diff cases, yes. And the holes were elongated apart, yup. But I'm told that, on a mag case 915, the diff cover is also a cause for concern.

So I got a WEVO bearing retainer and a WEVO billet diff cover from our host (who can special-order anything from any of their regular suppliers even if not in the PP catalog, you just need to provide the part #), and Mike Bainbridge opened that puppy up.

There were also no dog teeth(? think that's what they're called) left on 1st, which explained why speed-matching and double-declutching didn't help one jot trying to shift into 1st when moving, and no bits of metal in the case - it probably had happened a long time ago.

Box had been gone through once or twice before, most likely, Mike found some non-factory parts in there... The odo shows 237,000 the car was odo-exempt in WA state and it wasn't working when the PO got the car...

The 5th gearset was an interesting mid-blue colour. Figured that oil slosh under boost on the track probably accounted for that - or maybe it got run out of oil a decade or two ago, who knows?

Given that it was a mag case and that so much of it was distressed, sourced a '86 alu-cased 915 with an oil cooler in need of a fettling and fitted an internal spray bar kit, WEVO bearing retainer, 65/40 LSD and tweaked the ratios (taller 2nd and 5th).

Couldnt' use the WEVO diff cover, because the factory oil pump fits under there, but the late, factory alu cover is much stronger than the early mag case part anyway. It would have been nice to use the WEVO part with the 930 bearing though...
'77 S with '78 930 power and a few other things.
Old 10-30-2007, 05:12 AM
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