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Post by Stu on Jul 12, 2015 19:13:11 GMT
Does anyone know the visual differences between the AP1 and AP2 gearboxes, and the year of change?
I have two complete boxes from 998's which are post 1985 which I believe to be AP2 but I'm not completely sure.
I've also just aquired a third box from a 1275 which has the inhibitor box at the base of the front cover, the others dont have this. This box is 1990 onwards.
Seems like an easy question to answer but I'm struggling to find it in my manuals or on-line.
I have heard all 1275's were fitted with AP2's?
Any help would be appreciated.
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Post by jockduck on Jul 12, 2015 23:31:48 GMT
Hi, not sure about AP1s must have been a very early box, 1968 Otto has AP2, but as you know there have been significant upgrades to AP2s through the years, would be useful to see a chronological list of the evolution of the AP auto box.
Jock
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Post by wimfournier on Jul 13, 2015 10:14:38 GMT
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Post by notamini on Jul 13, 2015 19:48:43 GMT
Not all of us can open this link. Can you supply a different one or a website?
Mark
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Post by Stu on Jul 13, 2015 21:40:43 GMT
I cant open it either 
I called JPAT today just to ask a few questions on the overhaul kit I'll need. It seems they are struggling to get clutch steels from their supplier as they've stopped manufacturing them. They're looking at trying to get them made up from stock, but said they may not be available for a good 2 - 3 months.
I think my steels will be ok as they're in good condition but thought I'd let everyone know.
We also chatted about AP1 and 2 versions. He said he's been working at JPAT for 20 years and could not recall any customer requesting AP1 service parts, and thought they were from the really early MK 1 minis.
I think it's fairly safe that we all mostly have AP2's. I'm confident my three boxes are anyway  |
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Post by minigman on Oct 24, 2015 9:14:58 GMT
I have a mk1 auto with original 850 engine and box. I guess I have the AP1?
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Post by wimfournier on Oct 24, 2015 21:38:32 GMT
Well, yes, I suppoost so.
I understood from what I read that only the AP1 had an internal oil pump in the box that made it possible to start the engine by pulling the car.
In the AP11 you won't find such a provision.
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Post by jockduck on Oct 25, 2015 3:56:34 GMT
The AP 11 (early versions???)uses the governor gears as an aux oil pump to allow bump starting
Jock
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Post by notamini on Oct 26, 2015 13:38:01 GMT
I can confirm that. In my '69, the 2nd gear position also bump starts the car.  |
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Post by mra-minis on Nov 9, 2015 22:02:51 GMT
I can confirm that. In my '69, the 2nd gear position also bump starts the car. You make it sound like it will bump start itself ! lol. |
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Post by notamini on Nov 10, 2015 14:08:17 GMT
Hey... it IS an automatic  |
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Post by mra-minis on Nov 10, 2015 18:59:43 GMT
Hey... it IS an automatic Lol yes it is :-) It is very simple too.... the road wheels drive the pump, ie the pump speed is directly related to road speed. and as you tow it along oil is pumped into the valve body which is set to 2nd position, then diverted to the fluid flywheel / converter and therefore once full turns the engine over and hopefully starts... |
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