Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Hello,
I have read that the H151 transmission is not so good. Why is that? What kind of problems does it have? Are they repairable?
What is a good substitute for this transmission.
Thanks in advance.
JuanJ
not a big fan of the H151, love the H55F.
i find the H151 a clicky shift, the H55F is a smooth shift.
the gearing on the H55F is nicer than the gearing in the H151.
i have heard the H151 doesn't stand up as well as the old H55F.
Rosco loves them obviously.
personally, i would say go drive each and make an informed decision.
I dont love them over a H55F but I dont see them as a failure. I once worked for someone wih a HDJ80 that took a beating towing heavy loads. The 1HD T blew up before the gearbox.
Australians generally preferred the manuals models in the landcruisers and Ive yet to see anyone complaining about these boxes.
I always found the H151 a nicer shift,at least you can change quicker. The old H55F can be a slow shift and even a new ones never liked 1st to second without a 3 second pause.
true, a manual is more reliable than the auto.
as for shifting i have found the opposite to be true. i have no problem powershifting the H55F. now the R151/141 are harder to power through. the H151 is not smooth (in my hands) and i have not driven new ones but the ones i have driven are below 100K. if i had a CHOICE, i would go with the H55F.
H55F
1st: 4.848
2nd: 2.618
3rd: 1.516
4th: 1.000
5th: 0.843
H151
1st: 4.529
2nd: 2.464
3rd: 1.490
4th: 1.000
5th: 0.881
R151
1st: 4.313
2nd: 2.330
3rd: 1.436
4th: 1.000
5th: 0.838
R141
1st: 4.848
2nd: 2.618
3rd: 1.516
4th: 1.000
5th: 0.000 (4 speed)
Wayne or Roscoe,
What markets were the H151s mated to the 1HZ engine, was this combo mostly in Japan, Aus and maybe Africa? Or was this combo more likely to be seen during certain years in the 70 series?
John
I dont think the 1HZ ever got the H151 although it had the H150. The 1HZ had the H55F until 98? and there after got the R151
The H151 was behind the 1HD T, 1HD FT and 1HD FTE and the 1FZFE and now the 1VD FTE.
I can not remember what the aussie 100 series GXL had
There is a list here
TLC FAQ - 8.1 Transmission & transfer Case Ratios (All :1)
The 1HZ was not widely sold outside of Japan Australia and Africa. Europe mainly got turbo diesels( except for a few 75 series) and South/Central America and the Middle East like their petrol engines,although they seem to have a good selection of diesels in Panama.
The UN is probably the biggest single customer for the 1HZ.
Roscoe,
I tend to paw at that list pretty frequently, just not today for some reason . Anyway, very interesting re: the market history of the 1HZ, although I think you will need to amend your info on South and Central America as we can never forget about our ubiquitous friends the Coaster buses. They came to these markets with the 1HZ instead of the 15BT. As perverse as this sounds that is exactly why I'm having one shipped here from Japan, not because they are not here but because no one ever let's one go to the wreckers. Thanks again.
John
I was talking Landcruisers and I forgot the 1HZ is common in the Coaster. We also have plenty of them in Australia.
The Coaster is a great vehicle .
We had the 1HZ/HD FTE until 07 and now they are all 15BT FE
volcano, if the motor/box package is from a australian 79x then the box is a R151 NOT A H151
the R151 is a smaller weaker box again
the H151 is a really strong box we have them behind the new V8 desils in OZ
to answer the ??? yes i went through 3 H55 boxs behind my 1hdt and my now 1hdft
the first box had 120 000 klms, had it rebuilt lasted 25 000 klm blew up again and thirdly went again, the problem the bottom bearing in the box cannot handle the tourque these 1hd motors produce and simply let go
apon putting a H150 (same box as a H151 but different first gear) i have not had a drama
the h150 is factory behind our standard 80x and people never have a prroblem with these gearboxs except the early sincros
the h55 is a strong box is re reced about 150 000 klms and looked after but the h150/h151 is the pick of the 5 speeds
any questions or queries just ask
i get the impression people are mixing the R box with the H box
with the 79x with the R151 we are having a lot of problems with the at about 120 000 - 150 000 klm as they cannot handle the work and simply are to small a box for a big vehicle