mattressking
10 digits to freedom
For those nutty like me, Toyota has a 1/4-19 BSPT plug that fits perfectly into the 5th hole on h55 swaps.
some h55f and split case tech (2 Viewers)
- Thread starter orangefj45
- Start date
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Is this thread still active ? Need some advice on input shafts as I cannot mate my gearbox to my engine as there is an inch of space left between the bell housing and engine when the input shaft spindle has seated on the pilot bearing.
Please help this is urgent thanks
I see this is your first post, good luck with your build. @orangefj45 is the best person to help.
I’ve mentioned him here so he will get an alert. But as above,
what engine to which transmission are you dealing with? Be year specific too, there are a lot
of variations.
Yes I’ll do that thanks
@cruiserpilot
I have a 1992 PZJ75 and so happens is that the gearbox has been modified by an early owner where he’s stuck a Adapter plate between the gearbox and bell housing, I reckon his gearbox was bugged and he found a replacement but it wasn’t the right one so he had to use that gearbox. However I did manage to identify the gearbox and it’s a H55F. The original gearbox that was mated to the 1PZ by Toyota was a R151F.
Recently I bought a donor BJ75, now even this truck has had a fair bit of modifications done to the drivetrain. It had a 1HZ mated to a 4 Speed which I reckon is the H42F. The BJ75 had this drivetrain setup perfectly with no adapter plates or spacers.
So what I’ve done now is
-Removed adapter plate and bell housing from the H55F
-Used the bell housing from the H42F that was mated to the 1Hz no dramas
-bolted above said bell housing to the H55F
-Tried mating the H55F and 1HZ but there seems to be a gap of about 1/2 inches Between the Bellhousing and engine. The input shaft is seated right into the pilot bearing.
I’ve gotten as detailed as possible and I’ll attach pictures once I try it again.
But what could it be? A longer Bellhousing ? A shorter input shaft as the OP had said?
My 75 is sitting in my shop crying ahahah so any help would be appreciated thanks beforehand
Its beyond my knowledge. This thread has pics of different variations of transmissions
I think you would be better to start a new thread and post pictures of what you have.
Lots of times someone will see at a glance what is going on.
I think you would be better to start a new thread and post pictures of what you have.
Lots of times someone will see at a glance what is going on.
Yes it’s a bit too much to grasp at once
Anyway I have a new thread up
How long did you all wait to change your oil after the initial fill on a new h55f and rebuilt split case? I went 3,000 before I swapped fluid the first time.
orangefj45
Supporting Vendor
- Thread starter
- #269
That's about right.
orangefj45
Supporting Vendor
- Thread starter
- #270
Link?
Good to know. How long should I run this 50w mobil one synthetic in the trans and t case? I’ve got 20,000 on the current fluid.
Urgent Advice Needed in Real Time; 1HZ to H55F ??
I have a 1992 PZJ75 and so happens is that the gearbox has been modified by an early owner where he’s stuck a Adapter plate between the gearbox and bell housing, I reckon his gearbox was bugged and he found a replacement but it wasn’t the right one so he had to use that gearbox. However I did...
forum.ih8mud.com
I have an early H55F (6/1985) in my FJ62 and I am struggling to source a new layshaft (33421-36040) here in Australia.
I have a couple of questions, what is the difference between the early layshaft (33421-36040) and the later, post 10/1985, layshaft (33421-60060)? Are they interchangeable? If they are not directly interchangeable can a later one be used in an early box if I change some other parts (at 10/1985 I think the reverse idler gear and input shaft changed with the layshaft), or is there something fundamental that will mean this is not possible?
If this thIs not the right spot for discussion on this I did start the thread below before I came across this thread.
Early vs late H55F lay (or counter) shaft
Thanks wobson
I have a couple of questions, what is the difference between the early layshaft (33421-36040) and the later, post 10/1985, layshaft (33421-60060)? Are they interchangeable? If they are not directly interchangeable can a later one be used in an early box if I change some other parts (at 10/1985 I think the reverse idler gear and input shaft changed with the layshaft), or is there something fundamental that will mean this is not possible?
If this thIs not the right spot for discussion on this I did start the thread below before I came across this thread.
Early vs late H55F lay (or counter) shaft
Thanks wobson
Part number for my H55. 33030-60450
nogo
SILVER Star
Have you tried Terrain Tamer?
Transmission Shafts - Terrain Tamer
www.terraintamer.com
@wobson
Edit]..... Found this one, appears to be available, but at a price!....... 33421-36040GEN COUNTERSHAFT | 4x4world.com.au
Last edited:
I certainly have, I called them and they told me that they (and Toyota) no longer manufacture the older pre 10/1985 lay shaft. Below is an extract from their site only showing the newer one...Have you tried Terrain Tamer?
Transmission Shafts - Terrain Tamer
Looking at Transmission Gear (Mtm) for 1984 - 1987 Toyota LAND CRUISER FJ62 | General sales region, , 18027100-936735 and tracing all the parts that changed in 10/1985 I can't immediately see what the difference between the layshafts would be. This is what I am thinking:
- All the gears/bearing on the main shaft are the same, therefore gear profile of layshaft is the same and the position of the drive gears along the layshaft are the same.
- All bearings/nuts/snap rings/5th gear parts on the layshaft are the same, therefore since it is the same 5th gear assembly, the layshaft is the same dimension below the mainshaft in the gearbox housing, and then all the other drive gears (excluding reverse) on the layshaft would have the same number of teeth.
- The input shaft/bearing/seal/retainer changed, therefore, if this change is more than just a seal/bearing change, there may be a change on the layshaft input gear (teeth profile, teeth numbers, position along the shaft of the gear etc) or the length that the layshaft protrudes into the input shaft retainer after the snap ring? Can anyone confirm the differences in the new or old input shaft (part numbers in image below)?
- Reverse idler gear changed, now the teeth profile and position along the mainshaft must be the same as it mates with the same reverse gear on the mainshaft, which would imply the layshaft reverse has the same teeth profile and position. Now, I know the gearbox housing changed at this time too, in the new housing is the reverse idler in the same relative position to both the mainshaft and layshaft, if it is then I can confirm that they are the same ratios and same number of teeth on the layshaft reverse. Can anyone confirm this?
Thanks all, after typing all this what I might do is take a photo with some dimensions and count the number of teeth on reverse and input of the early style layshaft and post it here, if someone could do the same with the new one that would be greatly appreciated!
Cheers wobson
Thanks! Very interesting...I'll take a look at that, twice the price of the later one, but the first place I have seen that stocks the older one in Aus. Would still like to work out the differences, though.
