Author Topic: A7 Crankshaft fitment  (Read 395 times)

Offline Lightningpower

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A7 Crankshaft fitment
« on: 08.12. 2015 21:03 »
Will a later A7 (1959) crankshaft fit in a A7 semi-unit (circa 1953) crankcase?
1953 Star Twin - Racing
1956 Road Rocket
1958 Super Rocket
1959 Spitfire Scrambler
1967 Hornet

Offline beezermacc

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Re: A7 Crankshaft fitment
« Reply #1 on: 08.12. 2015 22:16 »
Unless its a longstroke (pre 51) all the A7 cranks are effectively the same, so, yes, it will fit.
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Offline Lightningpower

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Re: A7 Crankshaft fitment
« Reply #2 on: 08.12. 2015 23:21 »
Thank you.
1953 Star Twin - Racing
1956 Road Rocket
1958 Super Rocket
1959 Spitfire Scrambler
1967 Hornet

Offline duTch

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Re: A7 Crankshaft fitment
« Reply #3 on: 09.12. 2015 08:49 »

 I've done it and works fine, but with regard to recent discussion, it may depend on the conrods/big end bolts you use
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Online trevinoz

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Re: A7 Crankshaft fitment
« Reply #4 on: 09.12. 2015 20:38 »
With an A7 the bolt problem doesn't arise.