ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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Jun 27, 2011 20:17:16 GMT
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Let's say I bought a car with an auto transmission. It is either a Borg Warner 3 Speed or a ZF 4 Speed gearbox out of an XJ40. What distance could I safely tow it? I would not exceed 30mph, but it would also be 20 miles away from home, maybe 15 where I am taking it to. Ta  . |
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bl1300
Posted a lot
Posts: 1,678
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Jun 27, 2011 20:25:18 GMT
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To be safe disconect the propshaft before towing it. You can then tow it any distance as the wheels will no longer turn the box.
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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Del
South East
Posts: 1,448
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Jun 27, 2011 20:28:47 GMT
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Or lift the driving wheels off the deck on a dolly.
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Jun 27, 2011 20:31:14 GMT
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tbh, I'd possibly class that as the absolute limit. The main problem is, the internals will be spinning around, but there's going to be no oil pressure around bearings/etc
I've heard stories of overfilling auto box's, to help keep the bearings and seals wet - but their effectiveness is pretty much an unknown
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You're like a crazy backyard genius! |
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Jun 27, 2011 20:56:15 GMT
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States 10mls in my owners manual.
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Don't become a thief,The government don't like competition.
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Jun 27, 2011 20:57:34 GMT
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some autos can be towed. I don't think that the Jag is one of them. The yanks call it "dinghy towing" and its popular so that you can tow a car behind your Winnebago. Dropping the prop off is FTW really
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1937 Austin Street Rod - 1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1976 Rover V8 - 1994 Ford Fiesta
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Jun 27, 2011 21:29:52 GMT
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some auto boxes have a rear pump driven off the propshaft so they can be bump started, presumably this would also provide the needed oil to the bearings?
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1992 190E 2.0 - first car, currently being driven by the wife.
1989 500SEC
1968 W115 4.2 V8
2000 CL500
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ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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Jun 27, 2011 21:31:37 GMT
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Right, I think that answers my question.
I've since found out that the car has MOT. Whether I will risk driving an unused car back is another question.
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ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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Jun 27, 2011 22:59:08 GMT
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I have since found out that the car has a ZF 4HP22 'box, one that was fitted to BMWs and Jags. Maybe I will not risk it...
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tomti
Part of things
Posts: 937
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Jun 28, 2011 10:57:51 GMT
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As said, I'd just disconnect the prop and away you go
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djefk
Part of things
Posts: 844
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Jun 28, 2011 12:04:23 GMT
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Would towing it with the engine running work or is the gearbox oil pump not driven like that?? Just a thought.
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Jun 28, 2011 12:35:07 GMT
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Well, my take on this is that you need insurance in place to tow it on the road, and you are going to have to test drive it sometime anyway... Take a second car and a towrope (just in case) and drive it back! It's only 20 miles  |
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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