AIRCOOLEDRDCLUB FORUM
Tech Zone => Aircooled RD Tech Help 200cc and Below => Topic started by: JEZ PRESTON on June 01, 2018, 05:15:45 PM
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Hi Fellas, I have just noticed that the long bolt that holds the advance and retard mechanism onto the crank shaft is bent. this explains a lot of questions that I had! it is an M 7 thread I think and its 100mm long, part threaded. does anyone know if this part is still available or where I might get another one ? cheers...
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Asked a similar question recently.
There are genuine bolts available from the U.S., but expect to pay at least £15.
Part number 90143-07021-00 is what you need.
According to Fowlers, this part number replaced the original 1E8 part.
I can confirm that the length is the same (4"), but it is threaded slightly longer.
Are we completely mad that we are willing to pay over £15 for a genuine bolt for crying out loud!! :o
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Have you ever tried to get an M7 bolt of any length ? You could prob make one from an m8 if you've access to a lathe & an m7 die. It's probably been bent in a crash & the casing replaced at some point in its life
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I am sure that the OP is sorted now but in case anyone else is struggling and doesn't want to pay £15 for a genuine bolt, BMW part number 07119901683 is a 100mm long M7 bolt - fits fine:-)
Mine was missing and I did struggle to source an M7 bolt that length so this may help someone - just ordered from the local (car) BMW dealers, £1.49.
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7mm fasteners are often seen on Euro bikes and cars.
I bought some bolts from a Renault dealer for my Ducati. :)
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I sheared off the one on my AT3 (DT125) and googled the part number. There was a new one on ebay. I was lucky.
Do take care. Its a big head and a 7mm thread.
Dont rattle gun it back on - lock the engine up and spanner it by hand to a reasonable torque for 7mm threads.