Missing Crankcase Studs

olympus · Apr 25, 2018

Hi,
Unreal I know, but I have two crankcase bolts missing when stripped..
One is easy to fine but the other I need some assistance...
On a 72 pre combat case rear mounted breather, the very front upper 5/16 fastening... was this at OE a bolt or a stud?

Thank you

74ok · Apr 25, 2018

u talking #25?
https://andover-norton.co.uk/en/sho...rankcases-crankcase-breather-tachometer-drive

olympus · Apr 25, 2018

Unfortunately The photo doesn't show the 5/16 fixing above No 25.

L.A.B. · Apr 25, 2018

olympus said:
Unfortunately The photo doesn't show the 5/16 fixing above No 25.

No.25 should be the upper fixing (stud).

74ok · Apr 25, 2018

i was going by "very front upper"

the next hole down, which doesn't show a bolt or stud (is that what u mean?)

is for the upper engine bracket bolt that shows up as # 11 (upper & lower) here

https://andover-norton.co.uk/en/shop-drawing/28/engine-mountings-head-steady-centre-stand

Ron L · Apr 25, 2018

84ok said:
i was going by "very front upper"

the next hole down, which doesn't show a bolt or stud (is that what u mean?)

is for the upper engine bracket bolt that shows up as # 11 (upper & lower) here

https://andover-norton.co.uk/en/shop-drawing/28/engine-mountings-head-steady-centre-stand

But the front isolastic bolt is not 5/16, but 3/8-24 X 4 1/8.

74ok · Apr 25, 2018

i'm talking front motor mount bolts, upper & lower,

that then attaches to the iso mount

Missing Crankcase Studs

olympus

74ok

olympus

L.A.B.

Moderator

74ok

Ron L

74ok

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