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I was talking to a friend about the EH he is rebuilding. He also has an FC Ute which will be next on the agenda for a rebuild. He mentioned that he has a HJ One Tonner to wreck with 202, 4 Speed (M20 I assume?) and that he will use the 4 speed behind a 186 he already has. I haven't seen the Tonner or the tags on it. Did those 4 speeds come in 2 different sets of ratios? Just wondering as an old mate back in the 70's had a HQ Van from new and it was very low geared during take off. Could it be that it simply had a very, very low diff ratio? 3.9 maybe? Just curious?
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In a HJ it could be an M20 or M22. The M20 has 3.05 1st and reverse gears and M22 has 3.74. The super low 4.44 was introduced close to HJ release too for 6cyl tonners primarily as clutches were a problem even with the standard HQ wide ratio 4spd and 3.55 Salisbury. In a HQ Van it was called a wide ratio M20, but near the end of HQ they started to stamp them M22. It was the standard 6cyl 4spd for a HQ commercial. You could also get a special order 3.9:1 banjo in HQ 6cyl Ute and Van models. Edited by user Saturday, 3 August 2019 7:59:01 AM(UTC)
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Any HQ-WB commercials you find I am interested in photos of all 3 ID tags plus if it is a Pagewood body the firewall number (up to mid 1978) or early HQ Elizabeth body cowl number. I do keep tag images of any from FX to VK but only record HQ to WB commercials. Don’t go too much out of your way but if you are there with a camera they are much appreciated. |
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You can make a V8 M22 box by using the V8 3 speed inputs shaft. I've done it, but wont take a hammering as less teeth on input shaft in contact to transfer the power to the side shaft counter gear.
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I’ve heard people say before that the M22 is weaker, however I’m not sure I totally agree. Reason is the 3spd boxes are very strong, seen plenty of them in high power speedway use and they don’t break like a 4spd would. In the 3spd the input shaft and the mesh with the cluster is identical to an M22 4spd (apart from of course the HT V8 closer ratio 3spd). 4spds normally fail in 1st-3rd, and they wear mainly on the 1st gear end of the cluster. I’ve seen heaps with smashed teeth where the input shaft meshes with the cluster but this normally appears to be the result of the cluster locking up against another gear or jumping teeth once the cluster bearing fails internally. |
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I Take it that when you say internally , you are meaning collapsed needle rollers with in the cluster ?
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Yes, and/or the case hardening wearing off the inside of the cluster. |
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