12HT into 40 swap questions (2 Viewers)

[Kmehr]

Gearing up for my above mentioned swap and I cannot seem to find a definitive answer on a couple of items:

1) I have a 24v motor and am swapping to 12v. Are there any interchangeable alternators from other series? I’m having a heck of a time finding one in the states and the idiotic tariff situation has apparently put an embargo on all of these coming in from Australia, which appaers to be the only place you can find them.

2) rubber engine isolators- I have hj61 mounts and hj47 mounts. It appears the hj47 are the critical engine side to use in the 40, but what about rubber isolators? Do I need the correct “pin” or can I reuse the isolators from my 1F that don’t have any sort of “index pin” like the 60 series mounts, just a center bolt.

 

[duncanrm]

Gearing up for my above mentioned swap and I cannot seem to find a definitive answer on a couple of items:

1) I have a 24v motor and am swapping to 12v. Are there any interchangeable alternators from other series? I’m having a heck of a time finding one in the states and the idiotic tariff situation has apparently put an embargo on all of these coming in from Australia, which appaers to be the only place you can find them.

2) rubber engine isolators- I have hj61 mounts and hj47 mounts. It appears the hj47 are the critical engine side to use in the 40, but what about rubber isolators? Do I need the correct “pin” or can I reuse the isolators from my 1F that don’t have any sort of “index pin” like the 60 series mounts, just a center bolt.

Alternators
HJ60, or HJ47 alternators will fit - it requires the vacuum pump on the back. If you fitted an electric vacuum pump you could fit up any standard 12V alternator that you can mcgyver into position.

Mounts
For a trouble free fitment you'll need the HJ47 or early HJ60 Engine Mounts Arms - these are the steel arms that bolt to the side of the engine and which then sit on the rubber mounts. To match these you'll need the HJ47 bell housing too. The rubber mounts from an HJ47/Early HJ60 will then be required. My 2H/12HT site has pictures of all of this - scroll down to "Mounts/Bellhousing".. Toyota Diesel Documentation - https://sites.google.com/view/toyotadiesel/home

If you use all HJ47/Early HJ60 stuff the mount positions on your chassis will be correct. If you choose to use "Late HJ60" mount arms and bell housing you're on your own.

What is the heritage of this 12HT, what is bolted to it in the way of mount arms now?

 

[Kmehr]

Alternators
HJ60, or HJ47 alternators will fit - it requires the vacuum pump on the back. If you fitted an electric vacuum pump you could fit up any standard 12V alternator that you can mcgyver into position.

Mounts
For a trouble free fitment you'll need the HJ47 or early HJ60 Engine Mounts Arms - these are the steel arms that bolt to the side of the engine and which then sit on the rubber mounts. To match these you'll need the HJ47 bell housing too. The rubber mounts from an HJ47/Early HJ60 will then be required. My 2H/12HT site has pictures of all of this - scroll down to "Mounts/Bellhousing".. Toyota Diesel Documentation - https://sites.google.com/view/toyotadiesel/home

If you use all HJ47/Early HJ60 stuff the mount positions on your chassis will be correct. If you choose to use "Late HJ60" mount arms and bell housing you're on your own.

What is the heritage of this 12HT, what is bolted to it in the way of mount arms now?

I believe my motor is out of an hj61, and is a 1986 block. I do have a set of the hj47 block arms, so think I’m set there, just more curious what I need engine isolator wise. I am planning to reuse the HJ61 bellhousing and fabricate a trans crossmember in lieu of the bellhousing mounts.

That’s what I was afraid of on the alternator. I’m trying to Mcguiver as little as possible on this install, so guess I’ll need to keep the hunt up. Was hooping there was another series that could be fitted easily.

Thanks!

 

[duncanrm]

I am planning to reuse the HJ61 bellhousing and fabricate a trans crossmember in lieu of the bellhousing mounts.

Things may be a little skewed with that combination of bellhousing and engine mount arms.. the HJ61 bell housing "clocks" the transmission a little, I guess with a customised cross member it will all work.

With regards to the rubber mounts, I would be very surprised if you cant find the correct ones (early HJ60s will work) . If you can make the 1F ones work there's no downside but are they near new?

(I re-read your original post and you covered off some of what I said - sorry about that.)

 

[Kmehr]

Things may be a little skewed with that combination of bellhousing and engine mount arms.. the HJ61 bell housing "clocks" the transmission a little, I guess with a customised cross member it will all work.

With regards to the rubber mounts, I would be very surprised if you cant find the correct ones (early HJ60s will work) . If you can make the 1F ones work there's no downside but are they near new?

(I re-read your original post and you covered off some of what I said - sorry about that.)

all good! I was actually hoping you'd be the one to weigh in as you're the undoubted authority in this area.

My engine isolators on my current motor are about a month old, so brand new! They're the updated style that looks very similar to the HJ61 in thickness, though the HJs are a bit broader it looks like.

 

[duncanrm]

all good! I was actually hoping you'd be the one to weigh in as you're the undoubted authority in this area.

My engine isolators on my current motor are about a month old, so brand new! They're the updated style that looks very similar to the HJ61 in thickness, though the HJs are a bit broader it looks like.

I'd really make an effort to find the early HJ60 ones if you can.. I just took a look at some photos.. I think the F mounts have an offset top and bottom pin - whilst the 2H mounts are nearly straight through. With the reduced height of the F mounts you may also introduce some challenges in your radiator shroud.

With your mismatched bellhousing/engine arms - the introduction of another mismatch in the mounts just adds even more uncertainty and misalignment in everything.

 

[Greek Cruiserhead]

I'd really make an effort to find the early HJ60 ones if you can.. I just took a look at some photos.. I think the F mounts have an offset top and bottom pin - whilst the 2H mounts are nearly straight through. With the reduced height of the F mounts you may also introduce some challenges in your radiator shroud.

With your mismatched bellhousing/engine arms - the introduction of another mismatch in the mounts just adds even more uncertainty and misalignment in everything.

Followed @duncanrm suggestions and "made the effort" to find all the early HJ60 stuff.
Not bludy easy here in Europe, but been successful at he end. Now I can say that I have everything for my future 2H swap in my BJ45 pickup.
Thank you mate and greetings from Greece!