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M20,M21, M22 id
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308hjute Offline
#1 Posted : Sunday, 8 March 2009 7:30:27 AM(UTC)
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Guys,

What is the definitive method for iding Aussie four speeds? ie. 2 grooves on the input shaft = M21? Correct or not?

Cheers

Kev
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davequey74 Offline
#2 Posted : Sunday, 8 March 2009 7:44:11 AM(UTC)
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i have also heard that the m21 has 2 grooves on the input shat, however im no expert on g/boxes

i would also like to know the answer is




if it wasnt for the last minute id get nothing done
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JBM Offline
#3 Posted : Sunday, 8 March 2009 9:00:18 AM(UTC)
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The best way is to open the side cover and get the cluster gear Part No.
All Aussie 3 and 4 speeds have the same casing and the only difference between an M20 and a normal M21 is the first gear ratio. Same with the M22 and XU1 M20.

Input shafts are in
You only have to be in front at the end of the race.
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ITCH Offline
#4 Posted : Sunday, 8 March 2009 9:04:19 AM(UTC)
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Ask DP , he knows all , so he thinks , HHAHAHAHAHA!
<b><font color="orange">&lt; 4 SALE , SELLING .......SOLD!</b></font id="orange">
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HK1837 Offline
#5 Posted : Sunday, 8 March 2009 6:43:22 PM(UTC)
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As James says cluster gear is the best way. Whilst you cannot swap and change most input shafts some do work on others confusing the whole issue. James, cases for 3 and 4spd are different, only the early 4spds used the 3spd case.

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308hjute Offline
#6 Posted : Monday, 9 March 2009 5:00:44 AM(UTC)
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Guys,

part number for the cluster gear (I think) for this box is

2813497 AG

Cheers

Kev
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commodorenut Offline
#7 Posted : Monday, 9 March 2009 5:29:31 AM(UTC)
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Kev, that cluster gear part number is the same as the VB-VK M21 cluster gear, ergo......


Cheers,

Mick
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Mick
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308hjute Offline
#8 Posted : Monday, 9 March 2009 5:53:14 AM(UTC)
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Thanks Mick,

Ill have a chat to you in the next week or so. Bought a tonner body to replace mine, and it had the box with it.

Allegedly a HQ tonner, but the cab is definitely a HZ or WB with absolutely minimal rust...... looks like there might have
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HK1837 Offline
#9 Posted : Monday, 9 March 2009 6:00:33 AM(UTC)
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As Mick says, that cluster is for an M21 for HQ onwards. You dont really want an M21 in a tonner though. 1st gear is a b!tch when loaded unless you use a 3.55 diff.

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If we all had the same (good) taste, who would buy all the Fords?
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308hjute Offline
#10 Posted : Monday, 9 March 2009 6:07:58 AM(UTC)
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HK,

Ive been running a 3.08 diff for the last couple of years in the old girl. Its not a work ute, only a cruiser.

Although having said that, we towed a car trailer up to Blackheath yesterday (Blue Mountains for those not familiar) from Campbelltow
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HK1837 Offline
#11 Posted : Monday, 9 March 2009 6:41:17 AM(UTC)
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3 speed autos are great for towing. With 3.08 diff even better. But put an M21 in there and youll be changing clutches regularly even without towing. The last 1-tonner I built up was a WB, and at the time I had a spare 202 so I used it with an M20. It was
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