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M21 M20 Gearbox who knows the difference
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Joined: 8/05/2005(UTC)
Posts: 228
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As the tiltle says can anyone tell me and others how to tell the difference between the 2 boxes or do you have to pull apart to check i would like to think you can identify the 2 by the outside somehow, if so what is there too look for. Ive seen so many on ebay saying genuine m21 and they say i was told it was by a mate or the casting number on the side of the box tells you . I can assure you it doesnt as my books say its a casting number only, Any thoughts on this would be appreciatted as i am looking for one.. chers daza
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as far as i know. not alot... 1 machine line on the imput shaft is M20. 2 lines on the imput shaft is M21 and no lines on the imput shaft is M22. thats a basic idea. if a car is running a M20 box and 3.08 ratio diff. it will be quick off the line and quic
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Rank: Veteran
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Joined: 3/08/2007(UTC)
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if you use the rule of thumb with refence to the imput shaft. no groove = M22 single groove = M20 Double groove = M21 you will be right 95% of the time. Go to Bryons site and print out the aussie 4 sp reference guide, most guys should quote the Edited by user Thursday, 14 August 2008 6:28:24 AM(UTC)
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Old holdens brought on the spot, quick decision, cash paid. |
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Rank: Member
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Joined: 8/05/2005(UTC)
Posts: 228
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Thanks guys a great help CHEERS
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Fastlane
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M21 M20 Gearbox who knows the difference
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