3spd. tranf. 2a 4spd. help needed

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hammered

hammered

Joined
Dec 13, 2004
Threads
60
Messages
216
Location
Costa Rica
Website
www.orodesigns.com
Hey Guys:

I grabbed a 4 speed trani the other day here 1975ish.
I thought I could just bolt them up but not so.
the output shafts are different.
I went to the SOR site and found I need to change the output gear that powers the idle gear and also have to change the bearing on the tail shaft to fit the case.
I have the bearing now but need to know if I go buy a used gear will I have any problems???

My current tranfer is out of a 65 fj 40 and still in Ok shape. Low Milage.
Idle gear is a rock crusher. Redid the bearings years back and they are holding up well.
bushings on the output gears are abit sloppy but I am trying to find these here.
If not I will have to order from the USA.
They might be alright as for all I know I am sure there is some slop for expasion
The ring is also kindda s***ty but can't find this here.
Have an extra and it runs the same.



I know I should just have bought the whole thing but none avalible here right now.
Big demand and no parts to fix them right now.
Good ol Toyota dealer here has discontinued selling parts to maintain the older cruisers as of last year and this has forced people to buy a whole trani tranfer for a minor problem.:bang:
blew off steam today with the parts Manager today.
The whole counrty is powered by landcruisers.
Red cross, cops, national power, phone company and every farmer has one.
Figure this out. Can't even get a water pump gasket for a 40 cruiser from toyota.

Some one want to start a biz here.

Anyhow any info for this appreciated.

Gracias
Steve is still hammered in CR
 
So you want to use your existing t-case. I think that means you need the elusive 1974 input gear that has 16 splines, but the right gear configuration for a "3 speed" case.

That info is here on the board.

Do you also know you need a 4 speed bellhousing? If not, you soon will.

Good luck.
 
You will also need a 16 spline PTO gear or adapter kit which has a bushing that replaces the PTO gear ( Downy or AA ) You might need different bellhousing as the 4 speed uses dowel pins for alignment . Check your 4 speed output shaft for wear ...where the input gear rides, the gears tend not to wear not as bad . Good luck
 
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Have the bell but didn't know I had to find a 74 16 spline gear.
Have the Pto gear but the input got trashed when he blew his idler bearings.
He said the input also got toasted.

So what you guys are saying is I need to find a 1974 input gear in order to make this work???
Not 75 or 77 maybe 1978 but 1974 eh.hahahahhahaha... Ya right.hahahahhahahaha....

If I do the ol 3 speed is going back in manana and will do my best to rebuild the tranfer and will wait till I find a full setup to swap over.
Hell I have a 4 speed setup mint condition in CND sitting in a barn.
I will pay the shipping next trip back and save myself the grief of looking for this gear.hahahhahahahahahah....

Or will fork Out the cake and buy a 5 speed I know of , only thing is, it will break the bank and my kid will have to give up on the diapers and use that plastic high zoot s***ter I bought him to pay for the convertion.
Hell I might have to lay off the beer. na the 3 speed is going in! unless buddy drops his asking price.


Thanks for the info and input gear answers
 
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http://www.marksoffroad.net/specials/Specials.html

4spdkit.jpg


Very simple kit ;)
 
great site dusty.
Thanks for the link.
Mark has it all and I am making a shopping list.
Will have to see about shipping to CR though.

thanks for the link I will be a reg there.
 
OK I looked for the 74 output gear.
Well It gets wierd here.

I found a 4 spd trani the guy said a 1973 out of a PU.
It has a 10 spine output shaft and will hook right up to my 3 spd transfer.

Anyone know anything about this???
I bought it and have cleaned it up.
Better shape than the other 4spd I bought.

Will post a couple photos after lunch here.
Would like to know what the hell this is before I bury it under the jeep.
DId the 4spds come with a 3spd tranf before or has someone modified a 4spd ith a 3 spd output shaft.

This 4spd is different than the other as it has a PTO on the side and the shift top is a solid one piece rather than the 2 piece cover on the other.


thanxs
Steve
 
Call up Kurt at Crusier Outfitters, he will have the bearing, seal and Gear you need. You will also need the PTO delete sleve out of the 4spd Tcase, the bolts from the 4spd T case, along with the spacer and nut under the steel rear cap on the back of the 4spd Tcase. I jsut got done doing this exact same thing.

Cruiser Outfitters

There ya go.
 
Don't need the kit now.
What I have is a 4 speed with a 10 spine output shaft here.
I didn't know they came this way???
Anyhow I bought it as I am in Central America and the import tax on this kit will double the price. 300 plus to bring it in.

As is, I am going to hook my rebuild 3 speed tranfer to the abortion I found this morning.

As far as I know the 4 spds are all 16 fine spine outputs but this pup is 10spiner.

What I am asking is what model and year would this be from?
Would be good to know
 
have a look at thes photos and you guys tell me.
Maybe it is GM??? I woundered that, but GM isn't all that common here.

If it is any suggestions.
ie change the shift covers????
Is it any good?
DO they sound like a howling cat under the floorboards?

Feed back would be great

Steve:beer:
tn_feb 08 038.webp
tn_feb 08 044.webp
tn_feb 08 039.webp
 
The one with the shifter hacked off is just like my 4spd, maybe the other one with the PTO port is a non-us one?
my best guess.
 
Dusty 66 posted a photo of Mark's 4 spd. tranny to 3 spd. T.C. adapter. Here's the deal; You must use the 3 spd. O.D. gear with the 16 tooth internal spline to fit the 4 spd. output shaft---no other choice. You will obviously be using the 3 spd. T.C. rear bearing that does not fit the 4 spd. shaft. That is what the machined spacer tube is for:
(a) it 's machined surface fits the I.D. of the rear bearing.
(b) it's I.D. fits the O.D. of the 16 tooth shaft.
(c) it's length replaces the PTO gear.
 
hammered said:
have a look at thes photos and you guys tell me.
Maybe it is GM??? I woundered that, but GM isn't all that common here.

If it is any suggestions.
ie change the shift covers????
Is it any good?
DO they sound like a howling cat under the floorboards?

Feed back would be great

Steve:beer:
Click to expand...

I've never seen a 4spd with a 10 spline output, just heard of them. Judging by the pics I would have to say you've got just that, a Toyota 4speed trans with the 10 spline output. Neato :cool:

For more info on the 4spd trans (16 spline) to 3spd transfer (10 spline): Cruiser Outfitters Tech Re: Tcase Stuff
 
THE MORE I COMPAIR THE 2 THE MORE I THINK IT IS A YOTA.

SO It sounds like this exists.


This 10 spinner has no #s no nada on it to idetify it just the cases are near exactly the same except the shift cover and the input cover is slightly different.
I have a 3f bell and it has to be modified.
I think I will mod the input to fit rather than the bell.
Have to shave a 1/4 inch off the top of the cover.
It seems to have some extra meat and my newer one has been shaved from the factory.

As for the not from the US it is from a coffee farmers truck here in Costa Rica.

anyhow I will keep this thread going as I build it up.

Have one ? to all you reading this.

I understand that the 3 spd Transfer is better geared but is it noisier than the 4?
This s why I started this whole thing to begin with.
I have mixed stories.
some say the 3psd trani is the screamer others say the package sucks.
I redid the tranfer last week.
It is nice and tight now and sounds better mind you I have 4'' of refer foam on the floor to insulate the sound.


Pura Birra:beer:
Steve
 
That looks like the "F engine 4-speed". Dunno when production started, but ended in '73. It's slightly different from the 74-later H41, enough that most parts are different. Big advantage is a 5.29 1st gear. It should bolt in place of a later H41/H42. Installing it in place of a 3-speed requires all the usual changes: Bellhousing, d-shafts, t-case shifter. As you noticed, it will not require changing the t-case input gear.
 
hammered said:
I understand that the 3 spd Transfer is better geared but is it noisier than the 4?
Click to expand...



The 3sp low gear is 2.3:1 vs 1.99:1 for the 4speed.

I don't think that they are necessarily any noisier than the 4sp transfers and there isn't any reason why they would be noisier. I think that this idea came about along with the myth that they have straight cut gears (Only the PTO gear is straight cut and it isn't driving anything most of the time even if you have a PTO). 3sp transfer cases are older and may have more miles on them, but by now, I doubt that even this difference is significant.
 
I made up some shims for the transfer to tighten things up and line all the gears up better.
Put in some new bushings and changed all the worn bearings.
Seems to work nice.
Will stick with this one.
I have a 4 spd in parts but will build this up later for a spair if needed.
Parts are getting harder to find and I want this toy to last an other 40+ if we can still afford the gas down the road.

As for the tranni I guess it really is toyota.
The guy I bought it from says he has never seen one like this and has wrecked over 50 cruisers.

Told me it was from a 73 p/u diesel H motor.
input is the same as the F on the p/u H motor model.
I always thought you had to change them out but he said the PU models and gas are the same, Just FJ 40 diesels B are different???

Anyhow I am pumped about setting this up.
Will be an easy swap.
Will take my rear shaft to the shop and cut it down on the lathe when it is all in.

Thanks for the info and help on this.
Always appreciated.

Steve
San Jose Costa Rica:beer:
 
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