Bolt size & thread pitch LT77 gearbox to bellhousing?

mrtask

Well-Known Member
Hi folks. Can anybody tell me the size and thread for the six bolts I need to attach my LT77 box to an SD1 V8 bellhousing? Are they 7/16" UNC? I'm thinking 3 x 27mm length and 3 x 40mm length... sound about right?
Answers gratefully received.
 
Can anybody tell me the size and thread for the six bolts I need to attach my LT77 box to an SD1 V8 bellhousing? Are they 7/16" UNC? I'm thinking 3 x 27mm length and 3 x 40mm length... sound about right?

Sounds like you're not quite sure whether to go Imperial or Metric.....:D

I'd guess the thread type would be Metric on that box, but better to check rather than rely on me.
 
Rimmer Bros site says M12. Anybody got an SD1 workshop manual and/or parts handbook?
Would've been nice if I hadn't've overlooked these fasteners, as without them my mechanic mate and I made much less progress this morning than we had hoped to achieve. I kidnapped him on his day off (national holiday here in Germany today) and then shamefacedly had to admit I didn't actually have all the fasteners required. Still, at least I learnt a cunning trick for torquing up the flywheel bolts, and learnt how to fit a clutch and centre it. Also got the brake and clutch pedals set up at the right height. I digress.
 
Many thanks Cobraboy.
John, you wrench on helicopters for a living, right? This'll be like teaching you to suck eggs. You turn spanners for a living, I just do it as a hobby, having never been taught anything mechanical. Anyway, there I was thinking I would need an assistant who would have to jam a big screwdriver in the teeth for the starter wheel, and try to lever against a bellhousing bolt to hold the flywheel steady. The reverse of the procdure to loosen and remove the old auto starter wheel. My pal simply put a clutch bolt in the flywheel and put an open ended spanner on it, with the other end over a bellhousing bolt, and voila, the flywheel was held in a fixed position. Super simple, but I wouldn't have thought of it.
 
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