Lotus Elan

Prop shaft bolts

PostPost by: Matt Elan » Fri Mar 11, 2016 3:17 pm

So just popped my propshaft in and after consulting with my mate Pete put the four bolts on the diff flange on pointing forwards I.e. With the nut on the engine side. The workshop manual, parts manual and Brian bucklands book don't say which way is correct so I as there a right way to fit them? If there is I can gaurentee that I've put them on the wrong way......
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1969 Plus 2S - Currently undergoing nut and bolt restoration
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PostPost by: alan.barker » Fri Mar 11, 2016 4:43 pm

for info be sure they are fitted bolts with a plain section on the shank and are not set screws threaded up to heads
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PostPost by: Matt Elan » Fri Mar 11, 2016 6:43 pm

Yep correct bolts used with new nylon nuts
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1969 Plus 2S - Currently undergoing nut and bolt restoration
Visit me on matthewvale.com
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PostPost by: Lyn7 » Fri Mar 11, 2016 7:56 pm

Hi Matt & Alan, I think the correct way might be the only practical way, in my experience. Usually one flange is thinner than the other. I would put the plain shank through the thinner flange first making sure there is enough plain shank left for the thicker one. If both flanges are the same, usually one direction is easier for the nut to be tightened. I hope this makes sense! :D
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PostPost by: CBUEB1771 » Sat Mar 12, 2016 4:50 am

From an earlier post of mine, the nut goes on the differential side.
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PostPost by: vernon.taylor » Sat Mar 12, 2016 11:17 am

Salut Ross

Those are crazy nuts and bolts - what are they ?

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PostPost by: CBUEB1771 » Sat Mar 12, 2016 1:53 pm

vernon.taylor wrote:Salut Ross

Those are crazy nuts and bolts - what are they ?

@+

Vernon

Vernon - These are NAS fasteners that I selected because the small wrenching surfaces allow me to use a box (ring) wrench on both the bolt head and nut. With standard 5/16 UNF hex fasteners you can only use an open end wrench on the nuts because of the proximity to differential input flange. Here is a link to my earlier post:
lotus-gearbox-f37/fasteners-for-joining-prop-shaft-diff-input-flange-t35206.html
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PostPost by: Matt Elan » Sat Mar 12, 2016 3:47 pm

So I've done a bit more research and it appears that as standard British manufacturers put the bolts in with the heads to the propshaft, so l've swapped the little beggars round. Lucky the body's off.....
Matthew Vale - Classic Motoring Author
1968 Plus 2 - Somewhat cosmetically and mechanically modified
1969 Plus 2S - Currently undergoing nut and bolt restoration
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