I did a search on this but didnt find anything: Has anyone put a V6 Toyota truck/ 4runner tranny in a land cruiser? (I have an FJ62)I'm just curious as the Land Cruiser 5 speed is pricey and the 4runner trannys are cheap and fairly strong... Are there reasons this is a bad idea?
4Runner tranny in a LC?
- Thread starter daner
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Don't know anything about them, but it would seem that it would be kind of a pain to mount it up(adapt). I would fine a good used 4-speed tranny and swap it in. save money for a Toyo 5-speed and throw it in when ya get a chance.
I dont think it would work, I think the 4Runner/PU tranny is smaller and not as strong. The manual tranny in the non-US FZJ80 is the H55F or its relative, which is also different then the 4Runner tranny.
The tranny in the minis is not nearly as stout as the one in the Cruisers. Even the V6 tranny. The bolt patterns and input shaft lengths are not the same. The method of attachment to the T/C and of course bolt pattern (and output shatf length) are completey different. The trannys in the mini (G52, W54, R151) are all significantly longer then the H42, H55F and I think even the A442F (Not sure if that's the right nomenclature... I'm drawing a blank right now...).
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- #7
I looked at it briefly and am seeing the same things. I wasnt too worried about the strength as the 3.0 isnt too far away from the Land Cruiser motor in terms of power and torque, not to mention even if you do break it you can pick up another for $100, but the bellhousing and everything else is completely different....too much work for what it is...
Mark W said:
The Toyota R151's stand up behind supercharged 3.4 liter V6's producing 250-300 hp without any problems.
They seem to do fine behind chevy and ford small blocks as well.
I, for 1, would throw my SM420 in the garbage and put in an R151 behind my 2F in a heartbeat if I could adapt the R151 to it.
I think a 2F, R151, Toybox, split case setup would be KILLER.
Heck, I've got a G52 behind a 350. Works fine. Doesn't mean I couldn't kill it with a bit of enthusiasim on the throttle effort if I tried. And doesn't mean that the H42/H55F aren't stronger. 
Beyond an adapter you'd need a space/time fold to fit that setup under a '40.
Mark...
Beyond an adapter you'd need a space/time fold to fit that setup under a '40.
Mark...
I need both my hands and feet to count all of the mini/runner trannies that have lost 5th gear. Some are stonger than others (I don't really know the numbers of which ones are best) but hell. MArlin does a fairly good buisness repairing mini trannies.
I only need one hand to count the H55's that have failed (mostly due to pure neglect)
I only need one hand to count the H55's that have failed (mostly due to pure neglect)
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- #12
Mace- I agree with you that the early Toyota truck transmissions earned a reputation for losing 5th gear, but I've never heard of problems with the later v6(1990) trannies. I would LOVE to simply write a check for 3-4k and have a h55 thrown in, but like most people, I dont have the money, and my truck is an old rustbucket that isnt worth spending too much on. I'll maintain the auto and hope it lasts until I can afford a different setup
Mace said:
Toyota probably sold more R151's in north america in 1 year than Toyota, Sor and MAF have EVER sold H55's in NA.
For example
So, in a scale of 1000 and you get 10 failures
As opposed to a scale of, say 100, you get 1 failure.
In both cases, you are looking at a failure rate of 1%.
I honestly think that an R151 tranny will hold up just fine behind a 2F.
And if you blow up 5th gear, go to the junk yard, get another whole transmission for $75.
That would assume that I was personaly counting all of the 151's sold in the us which I am not. Just the ones I have experience with.
As a percentage I have seen a much higher percetage of runner/mini trannies fail than the H55's.
I do not see the hp or torque of a 2F being the issue. I see the weight of a 60 being the issue.
Most of the failures of the 5 speeds seems to be the result of "lugging" the motor in 5th.
If I was going to do a 5 speed swap I would do a NV4500.
As a percentage I have seen a much higher percetage of runner/mini trannies fail than the H55's.
I do not see the hp or torque of a 2F being the issue. I see the weight of a 60 being the issue.
Most of the failures of the 5 speeds seems to be the result of "lugging" the motor in 5th.
If I was going to do a 5 speed swap I would do a NV4500.
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- #17
"If I was going to do a 5 speed swap I would put in a NV4500"
Once again, If I had 2-3k (or 4K if someone does the work) that would not be an issue. I paid $850 for the entire truck , the R151 tranny is in the yard, hence free. I was just wondering if someone else had done the same, not what your dream truck was.
Once again, If I had 2-3k (or 4K if someone does the work) that would not be an issue. I paid $850 for the entire truck , the R151 tranny is in the yard, hence free. I was just wondering if someone else had done the same, not what your dream truck was.
daner said:
Man, do you have a chip on your shoulder or somethin?
the tranny is not that strong and would be a PITA to install like has been said.
I am sorry that I even made an attempt to offer an idea for another transmission..
I blew the 151 in my pickup with just the 4cyl. That trans just doesn't hold up to abuse well. I was in low range 2nd gear, lost second. I wasn't even beating on it. I think the trans is a strong one for it's intended application, but with the weight of an FJ60 I'd expect to go through them like a bag of cheetos at a greatful dead concert.
My bigger concern is the hidden costs of these types of unique swaps. Not just labor dollars, even the parts can add up. I would try to get a real perspective on what's needed for the swap - adapters, driveshafts, (what tcase would you run?), crossmembers, skid plates, etc. before venturing forward with this project. I suspect you'll find that for not much more money you can do a proven swap with a stronger trans.
HTH,
lance
www.ironpigoffroad.com
My bigger concern is the hidden costs of these types of unique swaps. Not just labor dollars, even the parts can add up. I would try to get a real perspective on what's needed for the swap - adapters, driveshafts, (what tcase would you run?), crossmembers, skid plates, etc. before venturing forward with this project. I suspect you'll find that for not much more money you can do a proven swap with a stronger trans.
HTH,
lance
www.ironpigoffroad.com
The adapters for this swap do not even exist. So it's pretty much a non-starter.
The weakest parts of these trannies in my expereinces are the bearings. The input shaft bearing and the rear coutershaft bearing to be specific. I've gone into 5-6 of these. All had significant wear on the input. To the point of severe pitting on all of them and significant spalling on a couple. I have one input bearing fail on my on the highway. Grenaded the tranny when the pieces wound up in the gears.
Toyota upgraded the rear countershaft bearing on the later units. Made the rollers longer and the shoulder that traps them narrower. But it is still marginal.
Fifth gear is tiny and will not take a lot of strain (heavy rig on rough roads that throw impacts into the drivetrain).
That said, with a fresh tranny and driving it with it's limitations in mind I am happy with them, even behind a V8. But that's in a mini truck. It would not be an appropriate swap into a Cruiser. Even if it could be done without a lot of custom design and machine work.
Mark...
The weakest parts of these trannies in my expereinces are the bearings. The input shaft bearing and the rear coutershaft bearing to be specific. I've gone into 5-6 of these. All had significant wear on the input. To the point of severe pitting on all of them and significant spalling on a couple. I have one input bearing fail on my on the highway. Grenaded the tranny when the pieces wound up in the gears.
Toyota upgraded the rear countershaft bearing on the later units. Made the rollers longer and the shoulder that traps them narrower. But it is still marginal.
Fifth gear is tiny and will not take a lot of strain (heavy rig on rough roads that throw impacts into the drivetrain).
That said, with a fresh tranny and driving it with it's limitations in mind I am happy with them, even behind a V8. But that's in a mini truck. It would not be an appropriate swap into a Cruiser. Even if it could be done without a lot of custom design and machine work.
Mark...