Any interest in this style of H55 40 series trans top cover? (3 Viewers)

[LCMoneyPit]

I have a line on a couple of these 40-specific H55 trans top covers. Is there any interest in this style cover if I could get a couple over to the U.S.? The bad news is that they wouldn't be cheap.

 

[mattressking]

That's not an H55 top cover.

 

[Living in the Past]

Some 40 series covers were reproduced in Pakistan but this is not one of them. This am OEM cover for reference.

 

[LCMoneyPit]

It's my understanding there are 2 types of H55 covers for 40 series. The one posted by @Living in the Past and the one I posted. Pinging @orangefj45 to comment as well.

 

[Living in the Past]

All H55F top covers are aluminium. They are also taller because there is two levels of shift rods in the cover. All H41/H42 40 series top covers are cast iron. All 60 series covers were aluminium. I know 60 series H55F covers have been modified to a 40 series covers. New covers for 40 series have been cast. Seen covers offered that were modified to move the 60 series shifter even further back for small diesel engines. If someone figured a way to modify a cast iron four speed cover to work a H55F it would be custom. I see no reason why Toyota would go to the effort of making cast iron covers that was going to be replaced by the 70 series two years later.

 

[LCMoneyPit]

All H55F top covers are aluminium. They are also taller because there is two levels of shift rods in the cover. All H41/H42 40 series top covers are cast iron. All 60 series covers were aluminium. I know 60 series H55F covers have been modified to a 40 series covers. New covers for 40 series have been cast. Seen covers offered that were modified to move the 60 series shifter even further back for small diesel engines. If someone figured a way to modify a cast iron four speed cover to work a H55F it would be custom. I see no reason why Toyota would go to the effort of making cast iron covers that was going to be replaced by the 70 series two years later.

I'll let @orangefj45 provide more detail, but my understanding is that there were 2 styles. The aluminum versions like your pic above (which I also have) came later than the version I posted above. A couple of the style I posted above are on their way to the US and the person they're coming from overseas is a land cruiser expert. I will try putting one on the H55 in my garage when they get here, so we'll soon find out for sure I suppose.

 

[orangefj45]

All H55F top covers are aluminium. They are also taller because there is two levels of shift rods in the cover. All H41/H42 40 series top covers are cast iron. All 60 series covers were aluminium. I know 60 series H55F covers have been modified to a 40 series covers. New covers for 40 series have been cast. Seen covers offered that were modified to move the 60 series shifter even further back for small diesel engines. If someone figured a way to modify a cast iron four speed cover to work a H55F it would be custom. I see no reason why Toyota would go to the effort of making cast iron covers that was going to be replaced by the 70 series two years later.

Are you 100% sure about this John?

Toyota did not use aluminum transmission top covers on H41/42 and H55F transmissions until 09/1980
Anything previous to that ( 4 and 5 speeds ), used cast steel top covers.
The H55F came out in 1976. The early version had the single-piece Tcase behind it. I’ve had one of the rear plates ( H55F to early case ) at my shop.
I also have one of the cast iron H55F covers at the shop.
When I get back from Moab ( next week ), I’ll dig it out and will post some pics.

Respectfully.

Georg @ Valley Hybrids & Terrain Tamer

 

[3_puppies]

Are you 100% sure about this John?

Toyota did not use aluminum transmission top covers on H41/42 and H55F transmissions until 09/1980
Anything previous to that ( 4 and 5 speeds ), used cast steel top covers.
The H55F came out in 1976. The early version had the single-piece Tcase behind it. I’ve had one of the rear plates ( H55F to early case ) at my shop.
I also have one of the cast iron H55F covers at the shop.
When I get back from Moab ( next week ), I’ll dig it out and will post some pics.

Respectfully.

Georg @ Valley Hybrids & Terrain Tamer

interesting, never knew that info before
wonder what shifter stalk it would use????

 

[Living in the Past]

This is the first I have heard Toyota made the H55F back to 1976. Have you personally seen one? What markets were they used in? Would be some thing other than a Land Cruiser. Bus, truck? I've found listings for a five speed in 60 series from 8/80 when aluminium cover started. But when I look at the actual parts break down for the transmission parts prior to 10/82 are for a four speed. Looking at that cover fifth gear would be to the left of first gear. It would be above reverse. For reverse and fifth gear to be on the rifjt in the shift pattern required a upper level of shift rods. The aluminium H55F covers have that. Besides the odd shift pattern not sure it couldn't prevent fifth gear straight into reverse. Aluminium covers have to shift down and to the left before it can go into neutral. All I can say it would verify exactly what your buying before spending any real money for one.

 

[mattressking]

The only trans I found so far that could be it is from a FA100 Heavy Truck, they had 4 and 5spd with cast iron lid behind F, 2F…

 

[Living in the Past]

The only trans I found so far that could be it is from a FA100 Heavy Truck, they had 4 and 5spd with cast iron lid behind F, 2F…

Found that one as well with a cover part number from 78 to 2001 of 33102-55021. Still shows the empty cover available. Transmission does not look much like a H55F. The cover shows three main forks. H41 H42 and H55F have two with a small arm for reverse. Fifth gear is in a separate housing.
Interesting I show the five speed going back to 3/69. Part number 33102-55020. The FJ25 had a crude four speed. I do not show a four speed in the 40 series until 4/72 with the start of the BJ40.

 

[Living in the Past]

Here are the parts breakdown for the five speed.

Date on the top cover is 3/78-12/2001. If it's still available the empty cover could be bought and delivered to the US for under $600. Notice the back of the cover is raised compared to the cast iron H41/H42. Would like to see a picture of the underside of the cast iron cover for the H55F. Then shift thru the gears. Mounted on the transmission can see the exposed shaft for fifth gear move. Is the on the upper right like the aluminium cover of upper left.

 

[Living in the Past]

@OGBeno do you have listings for a H55F back to 1976? I have never heard of a listing before 10/82. If it was a proto I could under stand. I have a 76 that I'm convinced was a proto type (not with a H55F) with a M42 transmission installed. But I sure you will not find a listing for that transmission/transfer case setup.

The three pictures in the first post the center one looks like a four speed. No extension and the tailshaft is too short for an H55F. Other two pictures look the bolt on shift tower looks like they been modified. Hard to tell with so much glossy black paint but appears them have new welds on them.

 

[orangefj45]

Maybe this will help …….. I just grabbed my cast iron 5-speed top cover and bolted it to the top of an H55F.
The shift pattern is the same as an H41/42 with the added 5th gear “above” reverse, so to the left and up. Makes for a”interesting” shifting into 5th and an odd pattern but it works. The 4-speed shifter came works ( from 1974-1987 ).
Hopefully this will help clear things up a bit.
Pics attached.

Georg @ Valley Hybrids

 

[orangefj45]

More pics

Georg @ Valley Hybrids

 

[orangefj45]

Last set of pics.

Enjoy.

Georg @ Valley Hybrids

 

[Living in the Past]

Looks professionally done like Toyota made them. But that doesn't surprise me. The M42 in the 76 I have was the same way. The torque tube behind the transfer was custom. Second set of holes in the right frame member. The original holes are in the frame but never used. It was intended to have the M42 setup when the FJ40 was built. Would like to see documentation of these went into production and used in the Asian Middle East markets.

In an earlier post in this thread I said with this shift pattern is the only way I see it happening. On the aluminum covers there are two levels of shift rods. Question I have will this setup prevent going from fifth directly into reverse? Aluminum covers coming out of fifth gear or reverse you had to shift to the left when into the middle between the two before going in to the either one.
The fifth gear housing is obviously not a match to the main housing. Is that a sixteen spline tailshaft?

On the 40 series the three speed covers were aluminum and four speed cast iron. 60 series were always aluminum. When the 70 series started 11/84 the shift covers matched the 60 series. For Toyota to offered a five speed in a 40 series it was already in the works to be replaced the 70 series modifying the four speed cover would have been easy way to use a five speed. Like the M42 setup was installed and test in a market it was intended for. In the end Toyota decided to make a 40 top cover out of aluminium. We're really like to see some documentation these went into production. Could see the H55F started much earlier since it just an extension on the four speed with longer counter shaft and tail shaft. Add the housing and fifth OD gears have an overdrive. That just leaves figuring a way for the top cover to operate it.

Not sure what not cheap means in the first post means. These would not be hard to reproduced. Shift rod for the OD. Cast piece to tie the reverse and OD shift rods together. Then some machine work to the cover. Only question is the lock out to shift directly between reverse and fifth gear if it has the lockout.

 

[rick_d]

Bandeirante top plates were also cast iron through at least 1995 or so from the J Ward/TLC donors I have seen a few times.

 

[Living in the Past]

@rick_d were these H55Fs bolted to Mercedes diesels? All four speeds used in 40 series had cast iron covers. That includes the early four speed used in the early diesels 4/72 HJ45. Have no access to Bandeirante information being these were a Brazil built vehicles and not kits like other countries in South America. Can find listings for incomplete vehicles but no Bandeirantes which would explain a lot. Does seem odd Toyota would make and export a H55F in 1976 and not install one in a Land Cruiser built in Japan until 10/82.

 

[rick_d]

5 speeds with a short 21 spline input bolted to a cast iron one piece tcase which was inspiration for the orion. 14b toyota branded engines.