Home » Public Forums » GMCnet » 1947 Jeep CJ2A as toad
| 1947 Jeep CJ2A as toad [message #275422] |
Wed, 08 April 2015 13:57  |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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I have an opportunity to buy a right nice old jeep at a fair price. I wondered if anyone had thoughts as to how it would tow (I'd lose about 1200 lbs of not-so-ugly fat vs the CRV) and any other comments would be appreciated.
My wife says I can have it but I have to get rid of something else before I bring it home.
I'm sure gonna miss her.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: 1947 Jeep CJ2A as toad [message #275424 is a reply to message #275422] |
Wed, 08 April 2015 14:10  |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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stick miller wrote on Wed, 08 April 2015 11:57I have an opportunity to buy a right nice old jeep at a fair price. I wondered if anyone had thoughts as to how it would tow (I'd lose about 1200 lbs of not-so-ugly fat vs the CRV) and any other comments would be appreciated.
My wife says I can have it but I have to get rid of something else before I bring it home.
I'm sure gonna miss her.
Stick,
The main issue with towing an old flat fender Jeep is that the gear ratio in the differential (and front, but that would not be a factor if it has locking hubs) is 5.38:1. This would mean that the axle shafts, differential, and the rear drive shaft/back half of the transfer case would be spinning really fast at any decent road speed. Your towing speed would be limited to not much more than 55 - 6o mph in order to not put undue wear or damage on those parts. Other than that, it is lightweight, and should tow just fine. I flat towed my '53 from Tucson to the dunes in CA a time or two before I built a trailer for it and there were no issues. People have been towing old Jeeps ever since the end of WW-II.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: 1947 Jeep CJ2A as toad [message #275428 is a reply to message #275424] |
Wed, 08 April 2015 14:51 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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I though that if I unlocked the hubs and disengaged the transfer case it would be free wheeling. ? Thinking on this further, that would only apply to the transmission and the front wheels. I believe you are saying that the rear axle and differential might not be up to the task. I usually drive a little faster than that but don't want to get involved with a trailer.
Would a drive shaft disconnect be worth the trouble?
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
[Updated on: Wed, 08 April 2015 14:55] Report message to a moderator |
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| Re: 1947 Jeep CJ2A as toad [message #275431 is a reply to message #275422] |
Wed, 08 April 2015 16:54 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
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I would think that 47 jeep would pretty darn light?? and small? put that on a small trailer, and you would be less weight then the CRV??
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: 1947 Jeep CJ2A as toad [message #275439 is a reply to message #275422] |
Wed, 08 April 2015 17:20 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
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Stick, don't know about towing, did get my Army drivers license in one of those, slipping and sliding in the Georgia mud at Camp Gordon, Ga. Don't think it would go over 45 mph downhill. Real whine from the transmission.
When ever I see one now, It brings back many a good memory.
Richard
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: 1947 Jeep CJ2A as toad [message #275440 is a reply to message #275428] |
Wed, 08 April 2015 17:35 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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stick miller wrote on Wed, 08 April 2015 12:51I though that if I unlocked the hubs and disengaged the transfer case it would be free wheeling. ? Thinking on this further, that would only apply to the transmission and the front wheels. I believe you are saying that the rear axle and differential might not be up to the task. I usually drive a little faster than that but don't want to get involved with a trailer.
Would a drive shaft disconnect be worth the trouble?
Unlocking the front hubs will allow the front to free wheel, but not the rear axle. The high speed will create extra heat and could shorten the life of the rear axle components somewhat, along with whatever is spinning in the T-case. You might be able to combat this with higher viscosity gear oil, maybe 80W140 and/or synthetic.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275441 is a reply to message #275439] |
Wed, 08 April 2015 17:32 |
James Hupy
Messages: 6806
Registered: May 2010
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I drove lots of M-38 A 1 jeeps of Korean War vintage. They had the F Head
4 cylinder. A good one would make 60 mph. But they were up against the
governor at that speed. See lots of them still for hunting rigs and toads.
Jim Hupy
Salem, Oregon
78 GMC ROYALE 403
On Apr 8, 2015 3:21 PM, "Richard MacDonald" wrote:
> Stick, don't know about towing, did get my Army drivers license in one of
> those, slipping and sliding in the Georgia mud at Camp Gordon, Ga. Don't
> think it would go over 45 mph downhill. Real whine from the transmission.
> When ever I see one now, It brings back many a good memory.
>
> Richard
> --
> Richard MacDonald
> Punta Gorda, Florida
> 76 Edgemonte TZE 266V102313
> Howell TBI EBL
>
>
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> GMCnet mailing list
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| Re: 1947 Jeep CJ2A as toad [message #275442 is a reply to message #275440] |
Wed, 08 April 2015 17:43 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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Sounds like there's not a good option for towing at highway speeds without modifications or a trailer. Maybe this is not such a good idea. Besides, this is a fair weather toad at best. No top...but it sure looks like fun.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275446 is a reply to message #275441] |
Wed, 08 April 2015 18:10 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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Stick,
I have know of M38A1s that were repowered with small V-8s. They could cruise at good highway speed with no problem, but without power steering, low speed maneuvering required a gorilla. I should think that as the power load on the gear set was minimal, you could drag it as fast as you dare with the T-case in neutral.
I almost hate to mention this, but when I worked in lived in the back woods of Maine, there was one jeep that used to get towed a lot and someone had put Warn hubs on the back. I have no idea how much of a tear-up this might have been. But, there was also another with two steering axles. One in the front and one in the back. It was undriveable over about 25, but we could turn around on a fire road. Winters are long up there and some people are very creative.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275451 is a reply to message #275446] |
Wed, 08 April 2015 19:02 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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Thanks, Rob. I've heard of a Warn overdrive but not the rear hubs. I have no delusions about driving this at highway speeds, but I'd like to think I can tow it at 65.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275474 is a reply to message #275446] |
Thu, 09 April 2015 00:26 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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Matt Colie wrote on Wed, 08 April 2015 16:10... I almost hate to mention this, but when I worked in lived in the back woods of Maine, there was one jeep that used to get towed a lot and someone had put Warn hubs on the back. I have no idea how much of a tear-up this might have been. ...
A few weeks ago I bought a Sidekick. The owner's step dad worked for Warn and had a Jeep with locking hubs on the rear. (Plus a lot of other "not-sale" Warn stuff.) Sounded interesting, and I now know that they do exist. On the question of if you can buy a set, that is another thing.
He also told me that he did testing on the Suzuki installed auto-locking hubs. (Said they are not rated for more than about 120,000 miles.) But auto hubs are not any good for towing four down anyway.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: 1947 Jeep CJ2A as toad [message #275476 is a reply to message #275422] |
Thu, 09 April 2015 01:13 |
Terrasmak
Messages: 40
Registered: December 2014
Location: Las Vegas
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I know I have seen more than one toad with manual locking rear hubs. My Autoshop teacher 2 years ago has them on his towed scout.
Len Novak, 76 Eleganza II, Las Vegas
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275489 is a reply to message #275451] |
Thu, 09 April 2015 08:51 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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stick miller wrote on Wed, 08 April 2015 17:02Thanks, Rob. I've heard of a Warn overdrive but not the rear hubs. I have no delusions about driving this at highway speeds, but I'd like to think I can tow it at 65.
The way to install locking hubs on the rear axle is to convert the rear to full floating axles and hubs like the front. Warn used to make a kit for this. It was not inexpensive and AFAIK, they discontinued it a few years ago. I have them on my '53 CJ-3b, but with drive flanges rather than locking hubs. If you can find the conversion kit, you will need to change out the differential side gears from the original 10 spline to the later model 19 spline. The CJ-2a had a different rear axle (Dana 41) that the CJ-3a and up Dana 44) but I think the conversion kit would still work, as both axles used the same axle shafts.
The previous military models used a full float Dana 23 (or maybe a 25) and some of those were used in early 2a's. If the Jeep in question has one of those left over military axles under it, you might be able to just bolt on a pair of 10 spline locking hubs and you would be in business.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] 1947 Jeep CJ2A as toad [message #275507 is a reply to message #275489] |
Thu, 09 April 2015 11:02 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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Well, thanks for all the responses and replies. Not being the mechanical type I was hoping I could just hook this thing up and go. That does not seem to be the case.
So, in the absence of any more encouragement I think I'll just keep Elise and keep on pulling the CRV. 
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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