Tapage
Club 4X4 Panamá
Your plans and idea already done in Chile .. let me search in the Chile off road forum this thread and I will post here ..
using an h42 as a rox bock (1 Viewer)
- Thread starter lowtideride
- Start date
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- Thread starter
- #22
Good to hear someone got it to work...please post up what you find.
Tapage
Club 4X4 Panamá
did you recive my PM with the pics .. ?
Tapage
Club 4X4 Panamá
here ..
I don't post it here before coz I send to Lowrinde and if he wants he can post ..
I don't post it here before coz I send to Lowrinde and if he wants he can post ..
Thats kinda long! Thanks for posting.
- Thread starter
- #27
Thats not really what I had in mind, and those don't look like two h42s but thanks for posting. I wonder what is in that spacer.
I just got back in to town and have not been on mud for a while. I have yet to talk to a shop but I picked up a bearing puller to remove the output shaft and will have at it some time this week
I just got back in to town and have not been on mud for a while. I have yet to talk to a shop but I picked up a bearing puller to remove the output shaft and will have at it some time this week
Have fun with that. Its a biatch! Let us know how it goes.
I just looked at this thread. Its been a LONG time since I've seen an H42 but couldn't you cut the rear output off of one & the front input off of the other, about 1.5" from the exterior face of the of the trans. Then you could have those stubs resplined and use a coupler to connect the shafts (like an sm465 does) then all you would have to do would be to build an adapter (fairly easy 
).
This all sounds VERY long but I see no reason why it would not work.
).This all sounds VERY long but I see no reason why it would not work.
- Thread starter
- #30
You could do that on the earlier but the couple would end up prob longer than 4 inches. Also the output and input shafts are different spline counts and different sizes. Im sure you could do it this way I just figured that it would be much more expensive that way, since getting a machine shop to make a coupler like that would seem like it would be big bucks...
It is not all that long....I think it adds 11 inches to the drivetrain and that doesnt really matter in a 60. Acutally its a big help...I have thrashed so many drive shafts on the rocks...
It is not all that long....I think it adds 11 inches to the drivetrain and that doesnt really matter in a 60. Acutally its a big help...I have thrashed so many drive shafts on the rocks...
I think you could use the 10 spline coupler from an sm465 & could probably get away with only 3.5" for an adapter. I would think this would be the easiest way, but I could be way off since I don't quite remember what an h42 output shaft looks like.
- Thread starter
- #32
The input is 19 spline and the output is 10 spline, both are very different sizes.
- Thread starter
- #33
I got the tranny all apart (actually weeks ago) Ive just been too busy to do anything about it. It turns out that...the plan of cutting off the output shaft and braoching the inside of it was a dead end. Because the roller bearings extend all the way thru the gear leaving no room for the input shaft of the other tranny to go.
Plan B came about...
To use the spacer from a 85-87 H42 on an earlier H42 81-84 Becuase on the later trannies the input is not splined all the way up to the case where as the ealier ones are.
So now we have a spacer bolted up the ealier tranny. This now allows room for a coupling to be made and for both shafts to be cut down to fit inside this spacer (around 4 "). What I need to do now or have done is.. a coupling made and the output shaft cut down and splined.
I guess whatever spline count the shop uses to spline the output shaft they will duplicate on the inside of one side of the coupling. For the otherside of the coupling the input from the first tranny will go. And that is the measuring I will have to do so they can cut the inside of the coupling to match the input shaft from the first tranny. I have a a junk h42 so I can just cut the input off of it and send it in with the output if worse comes to worse.
I sent some of this message to kirk to see if he can help me out on getting messurements for the input shaft. I have e-mailed most of the shops and turns out it looks I should just call them up..
-Al
Plan B came about...
To use the spacer from a 85-87 H42 on an earlier H42 81-84 Becuase on the later trannies the input is not splined all the way up to the case where as the ealier ones are.
So now we have a spacer bolted up the ealier tranny. This now allows room for a coupling to be made and for both shafts to be cut down to fit inside this spacer (around 4 "). What I need to do now or have done is.. a coupling made and the output shaft cut down and splined.
I guess whatever spline count the shop uses to spline the output shaft they will duplicate on the inside of one side of the coupling. For the otherside of the coupling the input from the first tranny will go. And that is the measuring I will have to do so they can cut the inside of the coupling to match the input shaft from the first tranny. I have a a junk h42 so I can just cut the input off of it and send it in with the output if worse comes to worse.
I sent some of this message to kirk to see if he can help me out on getting messurements for the input shaft. I have e-mailed most of the shops and turns out it looks I should just call them up..
-Al
That is genius. Then you would be able to shift the second tranny as well as the first. The hard part would be figuring out the location for the shifter.
Where would you put the shifter?
Where would you put the shifter?
- Thread starter
- #35
Shifter ends up somthing like 7 inches behind the other one...So I might have to move the console back an inch or two...(last of my worries)
Crawl ratio is 220:1 at the lowest. It will be nice when I move up in tire size agian I wont have to re-gear the axles just to tool around town. I can just leave the crawl box(second h42 ) in 3rd gear.
Crawl ratio is 220:1 at the lowest. It will be nice when I move up in tire size agian I wont have to re-gear the axles just to tool around town. I can just leave the crawl box(second h42 ) in 3rd gear.
Lowtideride one thing to consider is the input of a stock tranny sees relatively low amounts of torque. The output on the other hand sees high amounts of torque. Just think, 4:1 ratio multiplies torque by 4. That is about what the input of the second tranny will have to hold up to which is why a input shaft is so much smaller than the output. Keep that in mind, you might want to get a spare or 2 made.
- Thread starter
- #37
Yulp, I have thought of that...And Im not really sure if there is anything I can do about it. My best guess is that somthing further down the line will go first since it will be seeing upwards of 220:1 Like the axle shafts,birfs, r&r...all of them easier to change on the trail than a kaput output shaft...I guess ill test out the waters..
One more question. Are you planning on putting this in Velveeta or in Uranus? I would assume that you're going to put it in Velveeta because it's your daily driver.
For highway cruising, in 4th gear 4th gear, the output ratio would still be 1:1 because 4th in each tranny is 1:1. Wouldn't you have to keep your diff gears for around the town driving unless you shift both transmissions while driving, or is that the point?
Just trying to get a complete understanding of this mod so that I might be able to do it some day.
For highway cruising, in 4th gear 4th gear, the output ratio would still be 1:1 because 4th in each tranny is 1:1. Wouldn't you have to keep your diff gears for around the town driving unless you shift both transmissions while driving, or is that the point?
Just trying to get a complete understanding of this mod so that I might be able to do it some day.
The Second Tranny could act in place of lower Gears.. instead of putting in 5.29's
you keep the Stronger 3.7 Gears in the axles and put the second tranny in 3rd gear. Keep it in 3rd gear around town.. Second Gear in 4th for driving on the highway. Get to the trail, Drop the t-case in low, then when you get to an obstical that requires lower gearing than 1:1 you can use 3rd, 2nd, and even 1st to steep down the crawl ratio..
It gives you a bunch of options!
Pirate mini truck section has a some threads going on this, Most people are of the opinion that the second trans will blow up, and in a couple of cases people have broken the second tranny while in 1st/1st with the Pickup 5 speeds.. maybe the h42 will survive better than the pickup trannys.. Time will tell..
you keep the Stronger 3.7 Gears in the axles and put the second tranny in 3rd gear. Keep it in 3rd gear around town.. Second Gear in 4th for driving on the highway. Get to the trail, Drop the t-case in low, then when you get to an obstical that requires lower gearing than 1:1 you can use 3rd, 2nd, and even 1st to steep down the crawl ratio..
It gives you a bunch of options!
Pirate mini truck section has a some threads going on this, Most people are of the opinion that the second trans will blow up, and in a couple of cases people have broken the second tranny while in 1st/1st with the Pickup 5 speeds.. maybe the h42 will survive better than the pickup trannys.. Time will tell..
Tapage
Club 4X4 Panamá
The question is.. the second tranny are ready to handle constant load in 3rd gear from the factory tranny .. ?
