The Gm Upright Enjine

[asturmer]

Can anyone tell me when the GM upright motors were first used in speedway as I am trying to date a GM for the classic speedway club here in Perth, Aus. To qualify, machines, or engines at least, should be 25 years old!

[Jeff.]

Can anyone tell me when the GM upright motors were first used in speedway as I am trying to date a GM for the classic speedway club here in Perth, Aus. To qualify, machines, or engines at least, should be 25 years old!

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Dave Jessup was riding one in 1983, Egon Muller wor the World Title on one that year. I can't recall them being used prior to that though

[flying scotsman]

Giuseppe Marzotto "built" his first engine in 1979 but I thought it was a development of an existing engine?

[rusky]

I had it in mind taht they were either late 81 or early 82, but not sure. The big question is, does it have an external oil feed ?

[marcusthepom]

I had it in mind taht they were either late 81 or early 82, but not sure. The big question is, does it have an external oil feed ?

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1983 was the first year the engine was used,im sure dave jessup had a few rides on it but wasnt that sure about it,otto fine tuned the bugger for egon and the rest is history.im sure it was 1983,im no expert but it will depend what type of gm it is eg model type.theres been more models of gm motors than the queens had chip butties

[marcusthepom]

1983 was the first year the engine was used,im sure dave jessup had a few rides on it but wasnt that sure about it,otto fine tuned the bugger for egon and the rest is history.im sure it was 1983,im no expert but it will depend what type of gm it is eg model type.theres been more models of gm motors than the queens had chip butties

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get a wessie mate,made in the uk,a great engine and will fit your 25 year rule.