Trans Question

71mtnscout

Member
I just picked up a 71 Scout II for a toy and winter snow vehicle. It has an auto trans in it but I dont know if its the origanal or not. It is not at my house yet, wont be till Saturday.

My question is; how do I tell if its a b/w 11 or a 727 auto? I did a search and couldnt find the info.
 
The tf727 pan is aluminum and the bw11 is cast iron, if the magnet sticks you have a bw, if it dont then you have a tf
 
I just picked up a 71 Scout II for a toy and winter snow vehicle. It has an auto trans in it but I dont know if its the origanal or not. It is not at my house yet, wont be till Saturday.

My question is; how do I tell if its a b/w 11 or a 727 auto? I did a search and couldnt find the info.


Pretty simple...a borg warner has a cast iron/detachable bell housing and a cast iron case, there will be a "kickdown" switch mounted in the toeboard under the accel pedal.

A code t-407 (chrysler tf 727) will have a one piece bell housing/case and is all cast aluminum.

So a magnet will tell the story!

For some borg warner-related poop, try this thread:

http://www.forums.IHPartsAmerica.com/transmission-tech/1227-borg-warner-auto.html

And this one:

http://www.forums.IHPartsAmerica.co...borg-warner-11-aka-t-39-vacuum-modulator.html
 
the tf727 pan is aluminum and the bw11 is cast iron, if the magnet sticks you have a bw, if it dont then you have a tf

Incorrect information here...both the borg warner unit and the torqueflite have steel pans. So a magnet would stick to both pans.

In fact...an oem t-407 (tf727) in a Scout II application has a circular magnet (similar to a speaker magnet) stuck to the inside of the pan and is placed there during original assembly to gather any ferrous material particulate that sluffs off in operation in addition to the conventional filter system.
 
Thanks michael, I will look at it when I pick it up and figure out which one it is. I noticed that it waited till hi revs to shift, but shifts were quick and had no slipping, and all gears worked. So there May an issue with it.

I was reading some past posts and is it true that there are no hard parts available for this trans? How hard is it to go to a 727 and reuse the d-20 thats in there?
 
thanks michael, I will look at it when I pick it up and figure out which one it is. I noticed that it waited till hi revs to shift, but shifts were quick and had no slipping, and all gears worked. So there May an issue with it.

I was reading some past posts and is it true that there are no hard parts available for this trans? How hard is it to go to a 727 and reuse the d-20 thats in there?

A borg warner tranny is definitely rebuildable!! But not many pro tranny guys left working that know anything about 'em. All rebuild parts are certainly available from the wholesale suppliers I deal with but it's not something you will ever find in cruising around on the I-net as there is no market for that stuff! Especially regarding anything for older transmissions, you don't find this stuff on the 'net...that stuff comes from wholesale transmission parts warehouse distributors and they don't sell to the public on the 'net.

Yes...some parts used in the Ford fmx will interchange, but many others will not. Don't believe the typical bs that the bw 11 is "just a Ford", "the same as Ford", "same as jaguar", etc. They are part of the design series, but there were many variations produced over the years, the unit used in scout800/Scout II and fullsize stuff are all somewhat unique o the IH platforms.

The 727 is far easier to deal with simply because they are more numerous over the years and parts are super-available in all aspects. But...the bw is every bit as decent a tranny as the 727 for it's intended purpose.

The problem with swapping around trannys will be the output gear for the married d20 application if you wanna re-use the d20 mated to the bw 11. A bw 11 uses a different spline count and different helix angle as compared to the 727 version. If you have a 727 with a good output gear (or as some refer to it...the bull gear), then the mating gears in the d20 can be swapped for the correct ones when it undergoes overhaul. But very limited new parts for doing this are available, we do have some nice used stuff available however. All the gears in the Dana/spicer transfer cases have part numbers stamped in...that makes it pretty easy to determine the correct gear/parts mix for an entire assembly....beginning with matching the case guts to the bull gear intended for use. Many...many of the Scout 800 and Scout II transfer cases are running around out there with mismatched guts...then the folks that run that kind of stuff blame breakage on the "weak d20" which is pure bs!

Used bull gears for either IH application now carry a very premium price used...the similar items for the Jeep and Bronco applications are far more numerous and available.

Don't sweat the details of this tranny deal until ya are able to determine whatcha got and what kinda shape it's in!

If you do end up considering a swap, then ya really need to find a donor tranny/tc package. You need everything from the crankshaft hub spacer back most especially the flex plate). And ya also need the donor throttle pressure control stuff from a similar sii...or go with a fabricated lokar cable "kickdown" system as described in other threads here on the forum.
 
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I'll have to revisit this when I get the Scout home and start the "check out" of the systems to determine what needs to be done to her. This is going to be a dd, mostly used for non motorcycle weather days, and a trail toy.
 
Ok, got her home today and its a b/w 11 thats in there. I have a trans pan leak, so I have to get some gaskets and drop the pan, change the filter and put in some new fluid. I have a few issues to take care of before I go any further. Afb carb leaks, battery dies all the time and its the wrong size, change all the hoses, belts, fluids, stuff like that. Will be getting the parts I need this week and start in on her next Friday
 
Congrats man!

Check and see if this rig is actually an "810"...the very earliest version of the changeover to the Scout II platform. If it is, that makes it much more special in the collectible marketplace!

Once ya have the pan off for tranny service, be sure to adjust the bands. Review that thread posted by tonkascout in texas regarding how to do that and fabbing your own "special" tool/gage block.

And also check the modulator for corrosion/blockage like tonka found.

I'd powerwash the entire undercarriage before dealing with the tranny stuff, that makes it much easier to find all the fasteners and helps in preventing any debris from getting inside the tranny while laying on your back in a pool of burnt tranny fluid!
 
Found my leak, its one of the cooler lines, and I have to pull the frnt drivshaft to gain room. I will drop the pan and do a band adjustment, and I think my modulator is junk, since it waits so long to shift, but I havent got to a vacume test on the engine yet either.

Where do I get a modulator if I need one?

Its not an 810........................just a Scout II
 
Ok, worked on the Scout most of the day today. Did all the adjustments to the bw 11 and the inside is really clean. Got it all back together and changed the t-stat in the engine and adjusted the choke so its starts reliably in the cold.
 
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Ok, how do I, or who do I need to order a seal kit, or better yet, a master rebuild kit for the bw-11? I'm gunna part the sii body out and save the frame/running gear for a future project and want to "freshin up" the drivetrain.
 
ok, how do I, or who do I need to order a seal kit, or better yet, a master rebuild kit for the bw-11? I'm gunna part the sii body out and save the frame/running gear for a future project and want to "freshin up" the drivetrain.

Sorry I overlooked this post! I'll have to make some calls about the master kit, I know of at least one source that May be good, let me do the research. I have a complete bw 11 pullout here for a Scout 800 (same as sii) but it's an unknown as far as functionality, but we have no service parts for those on hand.

Any transmission shop has the capability of sourcing the master kits from the same wholesale warehouses I source from so if you know of a decent shop in your area then ya might try them.
 
My 11 works ok, but it leaks like hell when it sits. I think its the shift linkage seal and since I'm pulling the body off the sii frame I May as well freshen up the 11. I dont know of any shops around here, ill check around and see.
 
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