FJ40 Transmission Floor Tunnel? (2 Viewers)

[FloridaLife]

Looking at these pictures @JohnnyC posted a link above a PTO will not mount to a transfer case with a Todd OD mounted to it.
View attachment 3640659View attachment 3640658

Interesting. Attached are some pics of the transmission + transfer case + Todd Overdrive Unit. I "hope" it will allow me to use the PTO unit for the PTO winch. If not, then I'll have to make a choice between overdrive or PTO.

Anyone out there have an opinion? "IF" you had to choose between having overdrive, or having a PTO drive, which would you pick?

Thank you!

 

[Living in the Past]

@FloridaLife would be interested if this was mounted to a V8. The bracket spanning across the back is for a motor used with a V8.

Up to 8/80 Toyota supported the back of the drivetrain off of brackets bolted to the sides of the bellhousing. 8/80 and later was a bolt on crossmember supported the front of the transmission. Toyota never used the transfer case in the 40.series to support the drivetrain.

This brings up and interesting point. While it can be done it's not recommended to bolt an H55F five speed to a bellhousing that was used a motor mounts location. These was because of the extra weight.

Might be wrong but think the Todd OD is controlled electricity. The fins used for cooling and wires on the lower back would suggest how it's operated.

 

[JohnnyC]

He’s missing the handle … it mounts to the front of the unit … pushes a rod attached to the fork

Diagram in other thread

 

[Living in the Past]

@FloridaLife do you have a picture of the transfer case and OD your buying? I have a set of Torsen axle differentials. These in an early 40 series with a semi floating rear axle. These use a C clip in the diff to hold the inner axles in place. I almost torn the diff apart to pull out the inner axles. Luckily I didn't. These have a number of worm gears. They can only be assembled one way. One gear wrong and the diff will destroy itself. The Fairey is not as complicated but need to know how to do it. I would suggest if you can't find install instructions would film the dismantling. Because it's bolted to the back and PTO opening. Not seeing any easy way to just unbolt and remove it.

 

[Living in the Past]

He’s missing the handle … it mounts to the front of the unit … pushes a rod attached to the fork

Diagram in other thread

So what the area for with the cooling fins and wires. Just internal switch used to for light when OD is on would not need cooling fins.
Just wish Marshall would have posted his pictures directly to the site. Foxfab always used an external site to host pictures. Same with Tree root. Now those pictures are gone.

@JohnnyC not seeing a diagram. See a link to storage.google that wouldn't open for me.

 

[FloridaLife]

Looking at these pictures @JohnnyC posted a link above a PTO will not mount to a transfer case with a Todd OD mounted to it.
View attachment 3640659View attachment 3640658

@FloridaLife do you have a picture of the transfer case and OD your buying? I have a set of Torsen axle differentials. These in an early 40 series with a semi floating rear axle. These use a C clip in the diff to hold the inner axles in place. I almost torn the diff apart to pull out the inner axles. Luckily I didn't. These have a number of worm gears. They can only be assembled one way. One gear wrong and the diff will destroy itself. The Fairey is not as complicated but need to know how to do it. I would suggest if you can't find install instructions would film the dismantling. Because it's bolted to the back and PTO opening. Not seeing any easy way to just unbolt and remove it.

Yes, here are a couple of pics:

 

[Living in the Past]

Yes, here are a couple of pics:

View attachment 3640669

View attachment 3640670

View attachment 3640671

View attachment 3640672

Okay looks like the transfer case could be a 1/74-4/75 based on the high low shift linkage. Picture of the gears from the top would be the best way to time. The idler gear in that range would have two different widths on the gears. That does not require doing anything with the OD. I see the lever. Wasn't expecting anything so heavy. Fairey OD only used a rod. My it's location it would interfere with a PTO if it was possible to mount one.

 

[Mark Jennings]

Boy oh boy, the Todd is even goofier than the Hone. I use a Hone OD with a 3 speed and really like it…..but like all Toyota OD applications, they have limitations…..and take a good deal of care and feeding.

 

[Living in the Past]

Boy oh boy, the Todd is even goofier than the Hone. I use a Hone OD with a 3 speed and really like it…..but like all Toyota OD applications, they have limitations…..and take a good deal of care and feeding.View attachment 3640732

Did you modify the brake to a disc? It's the length of the rear driveshaft that would bother me the most. Only being to use it in 2WD wouldn't be that bad since speed is usually low when in 4WD.

I would be tempted to trade a Fairey for this once I did an inventory of what I have. Only have use for one and some spare parts. I seem collect the odd stuff.

 

[Living in the Past]

Looking at the diagram looks like this works basically the same as the Fairey OD. About where needle bearing #6 is where a PTO gear would have to be. Gear #5 is the transfer case input gear and right behind is the PTO. Neither of these gears are stock Toyota gears. This are special gears for the OD. Everything between the transmission tailshaft to the transfer case idler gear is special OD parts.

 

[Mark Jennings]

Did you modify the brake to a disc? It's the length of the rear driveshaft that would bother me the most. Only being to use it in 2WD wouldn't be that bad since speed is usually low when in 4WD.

I would be tempted to trade a Fairey for this once I did an inventory of what I have. Only have use for one and some spare parts. I seem collect the odd stuff.

Yes drive shaft is 8 1/2 inches shorter than a stock. I was kinda worried about the short driveshaft also…and payed Uber attention to pinion angle when assembling. The rig has a 2 1/2 inch Skyjacker lift and ended up swapping 2 degree shims for 4 degree shims. With about 2000 miles on the Hone-O-Drive since installation, I’m very comfortable with it now….no weird sucks and vibrations, and seems to articulate as well as the stock.
The disk is another unobtainable, sold by Man-A-Free in the early 90s. Uses an Airhart mechanical Go-Cart caliper….and I can still get the hockey puck pads off EBay. I like the disk because you immediately know if the TC (OD) output seal is leaking, it drips to the driveway instead of soaking the brake shoes

 

[timmyisinthewell]

This thread and curiosity got me to pulling out my late 70's and early 80's catalogs. Neither catalog lists a manufacturer for their overdrive, although the wording is the same in the ads. Anyone know who made these units? I couldn't find any reference to Toyota made overdrive assemblies or parts on my official Toyota microfiche ending with 07/80. Maybe Jim (Downey) can say how popular these were.

 

[Living in the Past]

This thread and curiosity got me to pulling out my late 70's and early 80's catalogs. Neither catalog lists a manufacturer for their overdrive, although the wording is the same in the ads. Anyone know who made these units? I couldn't find any reference to Toyota made overdrive assemblies or parts on my official Toyota microfiche ending with 07/80. Maybe Jim (Downey) can say how popular these were.

View attachment 3640899

View attachment 3640900

Do you know the year of the Man-A-Fre catalog? During the seventies remember the year was printed on the front cover.
Can't remember when Man-A-Fre closed the shop in Idaho. Not sure if was when Harold Graves died or before.

 

[timmyisinthewell]

Man-A-Fre shows March 1980 and Downey shows March 1979.

 

[FloridaLife]

Boy oh boy, the Todd is even goofier than the Hone. I use a Hone OD with a 3 speed and really like it…..but like all Toyota OD applications, they have limitations…..and take a good deal of care and feeding.View attachment 3640732

Wow!!! Your rig is CLEAN underneath!!!

 

[Green Bean]

This thread and curiosity got me to pulling out my late 70's and early 80's catalogs. Neither catalog lists a manufacturer for their overdrive, although the wording is the same in the ads. Anyone know who made these units? I couldn't find any reference to Toyota made overdrive assemblies or parts on my official Toyota microfiche ending with 07/80. Maybe Jim (Downey) can say how popular these were.

View attachment 3640899

View attachment 3640900

Oh boy, those were the days. Got to love the prices from way back when gas was .47 cents/gallon. I kind of miss the days of waiting for the paper copy of a catalog to show up in the mailbox.

 

[Living in the Past]

Oh boy, those were the days. Got to love the prices from way back when gas was .47 cents/gallon. I kind of miss the days of waiting for the paper copy of a catalog to show up in the mailbox.

I remember in highschool their was a Hudson gas station in town. Gas was ten cents a gallon and cigarettes were dime in the cigarette machine no monitor who was buying them.

My impression of the Todd OD is the housing is much stouter than the Fairey OD. It's design allows it to extend less out the back. This may allow it to be shoehorned in a pre 9/72 with a four speed and straight six without modifying the torque tube. But because of the design it does not allow the use of a PTO. Both share needle and cage bearings. I see this as a weakest link in the design versus the housing. Of all the Fairey ODs that have been posted on Mud over the years the problem has always been internal not a housing failure.

Believe all the pictures of the Todd OD looked to be the same one. Would appear to be a 1/74-4/75 transfer case. This is a transition case case used on the early four speed. This will use a twenty-nine teeth input gear same as the three speed case. This allowes a three speed case to used with a four speed. Three speed case has lower gearing in low range. It also has narrower gears which tend to be noiser. The 4/75+ four speed case has wider gears which are generally quieter. But the input gear is wider and has thirty-one teeth.

I do find it interesting neither Man-A-Fre or Downey used the name Todd ODs in their catalogs. Would be curious of the price new. Same with the Fairey. Wonder if this is why the Fairey was so popular compared to the Todd?

 

[timmyisinthewell]

And more to add.

 

[Mark Jennings]

I think that Fairey were popular because of the Land Rover connection…..

 

[Living in the Past]

And more to add.

View attachment 3641049

View attachment 3641050

View attachment 3641051

View attachment 3641052

View attachment 3641053

Interesting Downey show F-1568 under the picture of the OD and F-1586 on the price sheet.

I do not remember what year in then1990s I bought all the ODs and parts. I do know they were already discontinued by then. Obviously it was by 1988 when they were done

Years back on Mud they was supposed to be someone going to make them again. It was around the time the H55F was getting popular. Maybe that played into why we don't see any reproduction around.