Builds 79 Aussie BJ55 build (1 Viewer)

[brisveganbj42]

So... the good news is it's not a spun bearing...

 

[brisveganbj42]

bad news is I need to find another B series H55F...

 

[scrapdaddy]

Wow, that is some carnage. Maybe have someone rebuild it?

 

[brisveganbj42]

Wow, that is some carnage. Maybe have someone rebuild it?

It was rebuilt 6 months ago... 2nd hand input shaft as toyota have stopped making B series input shafts..

 

[brisveganbj42]

Might have found another input shaft in Melbourne so following up that lead. There are two different sorts. MY OG box was late model, the spare was early model and was what was used for the rebuild. The input shaft I found is for a later model so need to quiz the rebuilder of he'll sell me my old, late model, input shaft bearing retainer plate..

 

[brisveganbj42]

> MY OG box was late model, the spare was early model and was what was used for the rebuild. The input shaft I found is for a later model so need to quiz the rebuilder of he'll sell me my old, late model, input shaft bearing retainer plate..

That's wrong. Later model had oiler ears on the bearing retainers.. which is what mine has. So the input is for the earlier gearbox and retainer...

 

[brisveganbj42]

Hi folks.. long time no post (also no driving the pig ) hope you're all well

 

[bobm]

Y

 

[brisveganbj42]

So its been a while and things have been happening..

I found an older model B Series input shaft for 400AUD

And also got the old input shaft retainer and case from the gearbox rebuilder so I could run with the earlier input shaft:

And started to pull my gearbox down. I needed to remove the center output bearing to get the mainshaft and counter shafts out.. which proved to be difficult. I tried to make many different pullers but none seemed to work:

I resorted to a 50mm cut off wheel to cut the bearing out..

The counter shaft was undamaged so it went back in once I'd sorted some fresh bearings

And installed it with my new transmission floor jack! What an awesome bit of kit!

However my test drive soon uncovered the fact that something still wasnt right with my rebuild with not nice noises. I only drove it 10km after getting the gearbox back in and parked it up. I could drive it around the yard but not much. I'm not sure what I did wrong but I'm not a gearbox rebuilder so will pop it open again and see what I can see...

So while all of this was going on I set in motion plan B...

 

[brisveganbj42]

Here we have it ..

This adapter plate allows you to run a Dyna bellhousing to mate to the 13B/14B and 15BFT's to a Landcruiser H150/H151 or H152 gearbox. These come in the FZJ80/HDJ80's and 100 series.. with the VJD79's running the H152s.. There was even a 2017 revision to the H152's which had a taller 2nd and 5th gear reducing RPM's by like 400 at 110kph.



So with my failed H55F rebuild attempt I went parts hunting...

First off I found a mate selling a Dyna 300 with 14B locally for cheap! Like $3500 cheap. I'd seen 14B's advertised on the mainland for $4000+.. and had a mate in Melbourne who wanted a 14B for his BJ42... so snapped it up. This got me the bellhousing I needed and meant I might be able to break even with the sale... It took a few weekends to get organized but got the engine and gearbox out, and home...

I wanted reduction gears but they are only available in the 80/100's full time transfer so ended up getting some 3.11:1 Trailgear gears from @cruiseroutfit again...

I also got a part time kit to throw in as well.

The transfer case I bought sight unseen off FB marketplace was from a 105 by the look of the shifter, had a suspect VC motor and a cracked rear housing..

Luckily I found another HF2AV in an 80 series about an hour from home which was better suited.

 

[brisveganbj42]

With the transfer case bits mostly sorted it was time to move onto the gearbox. The late model H152 meant I could run 35's and 4.11's in the diffs and see just over 2000RPM at 110KPH. This would be great cos I had wondered if the 3.7's had contributed to the issues I had with the gearbox in the first place.. I checked with Toyota and they had plenty of gearboxes in stock in Melbourne so placed the order and paid up front. The brand new gearbox cost me $3850 including tax and was ready to pick up the next week. Keep in mind when I sent my H55F to get rebuilt I had to buy a spare gearbox with input shaft for $500, and the rebuild cost me $3000.. so a new gearbox is pretty comparable.

Next I needed all the bits to make the H152 work with the Dyna bellhousing and my 21spline clutch... So I needed a 1HZ input shaft and bearing retainer modded from 38mm down to 34.9mm to suit the Dyna clutch bearing:

Here we have the old B seriers input on the right and the 1hz input on the left (actually its the VDJ input but the bit you see here is the same)

So after dropping a heap of coin on a brand new gearbox I had to tear it down to replace input shafts.

You can see here how long the VDJ input is..

I thought I needed to pull off the 5th gear to replace the input but learnt a trick to swap it out otherwise

HEre it is with the new shorter input in place:

So back together it all went.

I was waiting on an input shaft for ages as they were all ex-Japan. I got onto Japan4x4 and ordered it with a heap of other bits I thought I needed. The next challenge was 4wd shifter. The 80 has 4wd shifters further rearward than the 5 speed shifter so that wouldn't work for me. I ordered a VDJ shifter in bits and ended up with something like this:

 

[brisveganbj42]

With all the bits mocked up I could work out some lengths

I measured my current drive shafts then dropped my H55F for the last time..

Yesterday I took my driveshafts to get shortened and lengthened..

So thats pretty much where I'm up to now..

I still need to:
- install part time transfer kit and reduction gears
- wire up h4 switch and transfer relay so it works with the HF2A
- Modify the Dyna bellhousing so it can accept the Tacho sender and my tacho will work as normal

- Figure out what I need to do with gearbox crossmembers. The H152 gearbox mount is about 265mm further back than the H55F. I'm glad I found the original gearbox mount from the FZJ80 auto.. so we'll see what I can do with that

- Drop both front and rear diff centers and swap out the 3.7 R&P for the 4.1's that I have somewhere..

Theres still a heap to do but I'm getting closer

 

[scrapdaddy]

Wow, a lot of good effort and a good amount of money on this project. Sounds like you have a solid handle on it. keep at it!

 

[brisveganbj42]

So the current theory on why I keep munching B series input shafts has something to do with 4 cylinder diesel harmonics (?).. driving it under 2000rpm, eg: lugging it around at low RPM, and the 3.7 Ring and Pinions. I did notice a bit of a grating/grumble when driving under 1800-2000rpm on the 3.7's but didnt think much of it.. If anyone has any resources to help explain this theory or 4 cylinder diesel harmonics, I'd love to learn more.

 

[brisveganbj42]

Wow, a lot of good effort and a good amount of money on this project. Sounds like you have a solid handle on it. keep at it!

I'm hoping to recoup some of it with sale of my 4:1 transfer (sold already), have another crack at fixing that B series H55F and then sell it, along with 3.7 gears, Dyna gearbox (they are popular in the 2nd had market) and the 14B..

I'm not hoping to make a mint, just trying to end up with a solution thats reliable long term.. which I hope this H152 will be..

 

[RUSH55]

Tasmanian Devil of transmission rebuilding

 

[brisveganbj42]

Tasmanian Devil of transmission rebuilding

Mates rates and no guarantees

 

[Ol Yeller]

So the current theory on why I keep munching B series input shafts has something to do with 4 cylinder diesel harmonics (?).. driving it under 2000rpm, eg: lugging it around at low RPM, and the 3.7 Ring and Pinions. I did notice a bit of a grating/grumble when driving under 1800-2000rpm on the 3.7's but didnt think much of it.. If anyone has any resources to help explain this theory or 4 cylinder diesel harmonics, I'd love to learn more.

I’d guess yes, the 4cyl has such broad power pulses.
In my road race car with a tubo‘d 2.4L 4 cyl I was shredding transmissions that would live behind small V8s and 6cyl making similar HP. Tearing the bearing retainers right out of the housings.
We concluded it was the broad pulses that destroyed the housings that had otherwise been happy with the similar HP.

 

[RUSH55]

The input bearing of the new transmission looks much bigger than the one from the old transmission. Maybe that will be a difference maker?

 

[brisveganbj42]

The input bearing of the new transmission looks much bigger than the one from the old transmission. Maybe that will be a difference maker?

Not just the bearing size is bigger.. the gear itself too