AussieHJCruza
Supporting Vendor
- Joined
- Jul 8, 2013
- Threads
- 61
- Messages
- 2,626
- Location
- New South Wales, Australia
- Website
- www.completecruisers.com.au
Did some asking and seems the current going rate for H152 is $3300 AUD
"UN Spec" H151F? (2 Viewers)
- Thread starter SNLC
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Indestructible 47
SILVER Star
Only 1 left in aus at the minute too.
Dragging this up from the dead. I know if you want to swap an H152 to an 80 you'd need the input shaft. Is it the same between the H150/151 and the 152? Since they changed the ratios I suspect this would be important as they have different clusters and ratios on the R series boxes.
H152 has a longer input shaft and a longer clutch casing, since this gear box is used in connection with the V8 engine. You'll need the clutch casing and the input shaft from an 1HZ or 1HD engine in order to use it in an 80 series.
H150, H151 and H152 are essentially the same gear box with minor differences, one of it being the ratios for the 1st and 2nd (they differ from H150 to H151), or the ratio of the 5th gear which is "taller" in the H152. I guess this is why you are after the H152 gear box.
Another difference between H150 and H151 is the number of splines of the input shaft, which could be 14 or 21. Typically the 1HZ engines uses the H150 gear box and have the 21 spline input shaft, while the 1HD engines uses the H151 gear box and have the 14 spline input shaft.
There is also something else you can do - Terrain Tamer offers a "taller" 5th gear kit for the H150 (not suitable for H151), pn#: 33428-HZJMOD, which modifies the ratio of the 5th gear from 0,881 to 0,736 thus resulting in a 400 RPM drop when cruising at 100 km/h or 60 mph.
H150, H151 and H152 are essentially the same gear box with minor differences, one of it being the ratios for the 1st and 2nd (they differ from H150 to H151), or the ratio of the 5th gear which is "taller" in the H152. I guess this is why you are after the H152 gear box.
Another difference between H150 and H151 is the number of splines of the input shaft, which could be 14 or 21. Typically the 1HZ engines uses the H150 gear box and have the 21 spline input shaft, while the 1HD engines uses the H151 gear box and have the 14 spline input shaft.
There is also something else you can do - Terrain Tamer offers a "taller" 5th gear kit for the H150 (not suitable for H151), pn#: 33428-HZJMOD, which modifies the ratio of the 5th gear from 0,881 to 0,736 thus resulting in a 400 RPM drop when cruising at 100 km/h or 60 mph.
I understand that.
I guess a better way to phrase my question is: Does the H152 VDJ box use the same input as the H150? Because if the tooth count on the input is different this will make the conversion significantly more challenging.
I guess while I'm ad it, did the H152 adopt the Triple cone synchros found in the 151 transmission or does it keep the single cone synchronizers?
I guess a better way to phrase my question is: Does the H152 VDJ box use the same input as the H150? Because if the tooth count on the input is different this will make the conversion significantly more challenging.
I guess while I'm ad it, did the H152 adopt the Triple cone synchros found in the 151 transmission or does it keep the single cone synchronizers?
H152F does not use the same input shaft as the H150/151 iterations. You would need to get a transmission from Australia, swap out input shafts and then get the correct bell housing to mate to the 1HD series of engines.
Last edited:
- Joined
- Sep 9, 2004
- Threads
- 186
- Messages
- 11,051
- Location
- Boise - Idaho
- Website
- www.snlandcruisers.com
- Thread starter
- #47
How about the H150 in VDJ200’s? Is it not the same H150 that came behind the 1GR in GR79’s?
I am just curious of the ratio differences from it to say the H152.
Cheers
I am just curious of the ratio differences from it to say the H152.
Cheers
Below is the input shaft of the VDJ79 H152 gear box:
and here's the input shaft from an 80 series, H151 gear box:
Both of them have 14 splines, but as you may see, this will not help you too much. You'll need to swap the input shaft and the clutch casing.
and here's the input shaft from an 80 series, H151 gear box:
Both of them have 14 splines, but as you may see, this will not help you too much. You'll need to swap the input shaft and the clutch casing.
Last edited:
So the clutch and pressure plate for H151 will not fit on the H152?
That part I got.
Is THIS part the same between the input shafts? (In Red, the cluster drive gear):
Yes, that shoud be the same. You should be able to 1:1 exchange the input shaft
Here's another note on this gearbox topic that may interest someone........with 350k Kms on my truck (1997 80 series 40th Anniversary - petrol 1FZ-FE 5 speed) I have just completed a drivetrain refresh from radiator back to transfer case. Recoed the engine and transfer case, fitted a new Exedy HD clutch but had some decisions to make regarding what to do with the original H151F box.
While it was still operating without problems, the synchros were getting a bit average especially if rushing the shifts while in low range. Had a specialist gearbox mechanic offer some options which included a reco of this old box with the 5th gear upgrade. He steered me towards buying a new 2021 H152F box from Toyota which, with the exchange input shaft, was only around $500 more than a reco and 5th gear upgrade on the old box. While the boxes are physically identical, he advised the internals like the synchros in this current H152F box were far superior to my 23 year old unit. Sounded like a "no-brainer" and am so glad I followed his advice.
Checked the ratios and found that the first gear in the H152F was a good bit "lower" at 4.529:1 vs 4.081:1 in the H151F while 2nd, 3rd and 4th were identical. 5th gear in the H152F is 0.751:1 vs 0.881:1 in the old box so a definite improvement in highway cruising and fuel use. There is a mention in this post of the 5th gear ratio being too tall and bothersome but one thing to remember is the 80's have a 4.1 diff ratio vs 3.9 in the later model cruisers. So the H152F 5th gear overall final drive ratio isn't as tall in the 80 series as the new cruisers. My truck now sits on 2,200 rpm at 100 kph (65mph) and is soooo much quieter in the cab on the highway. The 1FZ-FE produces around 95% of its maximum torque from 2,000 rpm so it has no trouble at all pulling this new 5th gear on hills at 80-100 kph. And the box shifts so much better than the old H151F which is another bonus. And now I have a "crawler" gear when in low range with the "lower" first gear ratio. Win win win......
So for anyone thinking about a gearbox reco on their old petrol 80 series with the H151F, bite the bullet and source a new H152F and have the V8 input shaft swapped to the shorter 6 cyl (with an after-market replacement unit). For a few extra bucks you've got a brand new box with even more useable ratios.
While it was still operating without problems, the synchros were getting a bit average especially if rushing the shifts while in low range. Had a specialist gearbox mechanic offer some options which included a reco of this old box with the 5th gear upgrade. He steered me towards buying a new 2021 H152F box from Toyota which, with the exchange input shaft, was only around $500 more than a reco and 5th gear upgrade on the old box. While the boxes are physically identical, he advised the internals like the synchros in this current H152F box were far superior to my 23 year old unit. Sounded like a "no-brainer" and am so glad I followed his advice.
Checked the ratios and found that the first gear in the H152F was a good bit "lower" at 4.529:1 vs 4.081:1 in the H151F while 2nd, 3rd and 4th were identical. 5th gear in the H152F is 0.751:1 vs 0.881:1 in the old box so a definite improvement in highway cruising and fuel use. There is a mention in this post of the 5th gear ratio being too tall and bothersome but one thing to remember is the 80's have a 4.1 diff ratio vs 3.9 in the later model cruisers. So the H152F 5th gear overall final drive ratio isn't as tall in the 80 series as the new cruisers. My truck now sits on 2,200 rpm at 100 kph (65mph) and is soooo much quieter in the cab on the highway. The 1FZ-FE produces around 95% of its maximum torque from 2,000 rpm so it has no trouble at all pulling this new 5th gear on hills at 80-100 kph. And the box shifts so much better than the old H151F which is another bonus. And now I have a "crawler" gear when in low range with the "lower" first gear ratio. Win win win......
So for anyone thinking about a gearbox reco on their old petrol 80 series with the H151F, bite the bullet and source a new H152F and have the V8 input shaft swapped to the shorter 6 cyl (with an after-market replacement unit). For a few extra bucks you've got a brand new box with even more useable ratios.
There is only one problem with that, the H152F is only available in Australia...
AussieHJCruza
Supporting Vendor
- Joined
- Jul 8, 2013
- Threads
- 61
- Messages
- 2,626
- Location
- New South Wales, Australia
- Website
- www.completecruisers.com.au
There's quite a number of H152 that have headed stateside.
It's not. My local Toyota dealer in the UK were able to get one when I enquired
Hello,
Thanks to threads like this I've got a nice new h152 to put in my 94 80 series.
Does anyone know If the gear on the input shaft from a h150 (the 21 spline one) will mesh properly with the countershaft 1st gear inside the h152 ?
Obviously the h151 input shaft works but Im not happy about having a taller 1st
I've seen different tooth count gears interchange before because their diameter is the same but obviously there is a limit to the difference and also other variables.
Has anyone done a h150 input shaft into the new 2017 and up h152 ?
Thanks
Thanks to threads like this I've got a nice new h152 to put in my 94 80 series.
Does anyone know If the gear on the input shaft from a h150 (the 21 spline one) will mesh properly with the countershaft 1st gear inside the h152 ?
Obviously the h151 input shaft works but Im not happy about having a taller 1st
I've seen different tooth count gears interchange before because their diameter is the same but obviously there is a limit to the difference and also other variables.
Has anyone done a h150 input shaft into the new 2017 and up h152 ?
Thanks
The H152 has the lower first gear of the H150. You only need to swap out the input shaft the H152 came with (21 spline) over to an H151 input shaft (14 spline). Input shafts get swapped from the 21 to 14 count and you're off to the races. Press the old one out and the new one in.
Ok Thanks Much appreciated brand new h151 shaft on way
when both boxes are apart ill check if the h150 input shaft works in the 152
when both boxes are apart ill check if the h150 input shaft works in the 152
