All my holes have been clean and I'm ready to put the new studs in.
The CAT call for M8x30 (999-062-239-02) so I order from PP 999-062-239-02/58 by OEM.
Just using finger power, the Head end (short) go in about 5mm of the 16mm.
If I use the Manifold end (long), it goes in 16mm no problem.
This is the same in all 12 holes (including the Time-Sert one). I can get the old ones going all the way with no problem.
We measure the new studs and the manifold side is 7.87mm at the end & shoulder while the head side is 8.00mm at the end but 8.05 at the shoulder.
A generic M8 stud (gently use) from the hardware store is straight at 7.83 across.
So the new ones seem to be tapering out by .05mm.
Any concern or explanation?
Long End in (left one) / Short End in (right side)
Old / New
Side by side
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83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats,
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