Throwing out a feeler to see if anyone is using an A340H with dual case set up. Working on a project build, starting to second guess my decision. A little help, anyone?
BirdMan
BirdMan
Anyone dual cased an auto?
- Thread starter BirdManzFJ
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I think 4Rnr here on the board has done an auto crawler, though, I'm not aware of his actual setup as far as specific transmission or boxes.
i personally havent done it,
but it would be interesting to see cause just thinking about it would work makes it seem difficult. seems like you are gonna need a lot of adapters and such.
This is kind of what i was thinking with your other thread about the bellhousing question. did marlin ever come through with your questions on how to put this together and how many adapters you would need?
but it would be interesting to see cause just thinking about it would work makes it seem difficult. seems like you are gonna need a lot of adapters and such.
This is kind of what i was thinking with your other thread about the bellhousing question. did marlin ever come through with your questions on how to put this together and how many adapters you would need?
- Thread starter
- #4
I guess I didn't ask the right questions, both MC and IW, replied with basically, "yes there is an adaptor plate by IW, that will allow you to adapt from chain to gear". Then I assume the rest is up to the builder.
well,
having not done it, this is all speculation from what i found on marlins website, but
seems like you would need the adapter he sells to get the built in transfer case off the back of the auto and adapt to fit the gear driven rf1a. then you need a reduction box with your choice of gearing. then you need another adapter from marlin to adapt for duals. then your second reduction case (again with your gearing chioce) and finally the transfer case with outputs.
So two adapters, and two complete rf1a transfer cases, one of course will only use the reduction housing.
obviously i dont have measurements for all that stuff, but seems like to me your drive line might be getting awfully long and heavy to boot.
how much room would it leave for drive shafts?
having not done it, this is all speculation from what i found on marlins website, but
seems like you would need the adapter he sells to get the built in transfer case off the back of the auto and adapt to fit the gear driven rf1a. then you need a reduction box with your choice of gearing. then you need another adapter from marlin to adapt for duals. then your second reduction case (again with your gearing chioce) and finally the transfer case with outputs.
So two adapters, and two complete rf1a transfer cases, one of course will only use the reduction housing.
obviously i dont have measurements for all that stuff, but seems like to me your drive line might be getting awfully long and heavy to boot.
how much room would it leave for drive shafts?
wait....
does this replace the chain drive unit all together or just put a gear reduction before the chain drive?
Dual Case Unit, V6 (MC10-T360) | Marlin Crawler, Inc.
edit.: i think this is what you need. basically the culmination of what i was talking about before. the first link is just for a gear reduction in front of a chain case. you want to eliminate the chain all together right? i would.
http://www.marlincrawler.com/transfer-case/line-ups/crawl-boxes/dual-case-kit-v6
does this replace the chain drive unit all together or just put a gear reduction before the chain drive?
Dual Case Unit, V6 (MC10-T360) | Marlin Crawler, Inc.
edit.: i think this is what you need. basically the culmination of what i was talking about before. the first link is just for a gear reduction in front of a chain case. you want to eliminate the chain all together right? i would.
http://www.marlincrawler.com/transfer-case/line-ups/crawl-boxes/dual-case-kit-v6
- Thread starter
- #7
MC sent me this.
Inchworm Gear - Toyota Rockcrawling Equipment
So, if I am thinking right, remove the chain drive all together, install the adaptor plate to transmission along with a gear drive dbl case set up, from either MC or Inch W.
Inchworm Gear - Toyota Rockcrawling Equipment
So, if I am thinking right, remove the chain drive all together, install the adaptor plate to transmission along with a gear drive dbl case set up, from either MC or Inch W.
sounds right to me,
but why would marlin refer you to inchworm when he has the shiz right there to do the same thing with?
but why would marlin refer you to inchworm when he has the shiz right there to do the same thing with?
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I think that's a solid plan.
The chain drive TC is largely considered junk.
The RF1A T/C is universally considered bullet proof.
The chain drive TC is largely considered junk.
The RF1A T/C is universally considered bullet proof.
- Thread starter
- #10
They just said they didn't offer the adaptor plate for the 3VZ.
From my understanding after dealing with Lefty's and FJC's, the two sorta hold hands on a few things.
oh. i see.
i understand the need to kind of spread out some of the custom machine work among a couple good companies.
and dont get me wrong marlin makes great stuff when you can get it
but this marks the 4th time now that i have been displeased with marlin products availability.
why is that on there if i cant buy it and they dont plan to make it??
1988-95 3VZ-E 3.0-liter V6 drivetrains | Marlin Crawler, Inc.
that is a link to the adapter itself. you can add it to your cart all day long for $349.
this is getting pretty slack in my opinion. if you only want to make dual case adapters, then fine, but take all the other stuff that is "unavailable" or has been "not in stock" for a year off there.
i know birdman has no idea what i am talking about, but there have been several items that i have tried to order from marlin, for the simple reason that its the best stuff, but you just cant get. like its unobtanium. and whats worse is they will let you add it to your cart and pay for it and never call you to tell you that it wont be in stock.
i understand the need to kind of spread out some of the custom machine work among a couple good companies.
and dont get me wrong marlin makes great stuff when you can get it
but this marks the 4th time now that i have been displeased with marlin products availability.
why is that on there if i cant buy it and they dont plan to make it??
1988-95 3VZ-E 3.0-liter V6 drivetrains | Marlin Crawler, Inc.
that is a link to the adapter itself. you can add it to your cart all day long for $349.
this is getting pretty slack in my opinion. if you only want to make dual case adapters, then fine, but take all the other stuff that is "unavailable" or has been "not in stock" for a year off there.
i know birdman has no idea what i am talking about, but there have been several items that i have tried to order from marlin, for the simple reason that its the best stuff, but you just cant get. like its unobtanium. and whats worse is they will let you add it to your cart and pay for it and never call you to tell you that it wont be in stock.
We do not offer an adapter to bolt a gear drive t-case up to an A340H, only the A340F.
We work closely with Inchworm and have no problem substituting one of their adapters to our customer (after notifying the customer) so we can get them taken care of. We know the quality of Jim's adapters and feel they are a great product.
Going behind an auto we prefer to go to a 23 spline input on the crawl box and keep it 23 spline through the dual case adapter.
We work closely with Inchworm and have no problem substituting one of their adapters to our customer (after notifying the customer) so we can get them taken care of. We know the quality of Jim's adapters and feel they are a great product.
Going behind an auto we prefer to go to a 23 spline input on the crawl box and keep it 23 spline through the dual case adapter.
NorCalBorn
10 Year
15 Year
Brendan, I forget, what about just using an A340E (2wd) with said setup and avoid the whole integrated case b.s. all together since the A340E's are pretty much a dime a dozen out here in California and then use the adapter to run a geared case and chain case instead?
I know I'd mentioned this to Jim before.
Not necessarily directly addressing the O/P's topic, but a possible route to a solution. People are of the mindset with autos that you need dual geared cases like on a manual when in reality you don't. Auto's are smoother on things in my experience. For that matter, I've ran chain case into chain case on another rig just fine.
Shane
I know I'd mentioned this to Jim before.
Not necessarily directly addressing the O/P's topic, but a possible route to a solution. People are of the mindset with autos that you need dual geared cases like on a manual when in reality you don't. Auto's are smoother on things in my experience. For that matter, I've ran chain case into chain case on another rig just fine.
Shane
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It all makes sense now.
It's an H transmission, that's why it's tricky, it has the fluid-coupling t-case setup.
FWIW it's beyond worthwhile to lose that configuration, because the H series setup adds drag on the driveline.
It's an H transmission, that's why it's tricky, it has the fluid-coupling t-case setup.
FWIW it's beyond worthwhile to lose that configuration, because the H series setup adds drag on the driveline.
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- #15
Are you saying to loose the transfer case set up or loose the transmission.
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Oh, sorry for the convoluted phrasing.
I mean "lose" in the capacity of converting to a direct gear-driven configuration, as is plan.
My bad!
I mean "lose" in the capacity of converting to a direct gear-driven configuration, as is plan.
My bad!
Ive done duals behind my stock 3.0/a340h, then again behind my swapped in 3.4/a340f.
The only main stream vendor that offers an option for putting duals behind the a340h is Inch worm. It is much more involved than the a340f, which is basically the same job as putting the duals behind a v6 5spd.
The A340h has an integrated t-case. They are technically one piece. They do not however, share fluid. Though they do both use ATF. The t-case is more like an auto trans, it has a valve body, clutches, and planetaries.
To remove the t-case you have to start at the back. starting with the drive flange, out put housing, etc, you literally disassemble the t-case.
The adapter uses the stock empty reduction housing as part of the adapter. Making the adapter about 9" long.
You also have to drop the valve body in the transmission to remove the 4wd parking pawl (which, in stock form, engages the t-case for park) and replace it with a 2wd parking pawl. (which uses the transmission to engage park)
All in all it is a pain in the ass, but it is strait forward and very doable.
Let me know if you have any other questions.
The only main stream vendor that offers an option for putting duals behind the a340h is Inch worm. It is much more involved than the a340f, which is basically the same job as putting the duals behind a v6 5spd.
The A340h has an integrated t-case. They are technically one piece. They do not however, share fluid. Though they do both use ATF. The t-case is more like an auto trans, it has a valve body, clutches, and planetaries.
To remove the t-case you have to start at the back. starting with the drive flange, out put housing, etc, you literally disassemble the t-case.
The adapter uses the stock empty reduction housing as part of the adapter. Making the adapter about 9" long.
You also have to drop the valve body in the transmission to remove the 4wd parking pawl (which, in stock form, engages the t-case for park) and replace it with a 2wd parking pawl. (which uses the transmission to engage park)
All in all it is a pain in the ass, but it is strait forward and very doable.
Let me know if you have any other questions.
- Thread starter
- #18
AWESOME, thanks 4rnr. Just what I needed to hear.
I will be in touch.
I will be in touch.
NorCalBorn
10 Year
15 Year
Thanks man, I forgot what the deal was with that trick and knew there was another 2wd bit in there somewhere. Then again, we all know how I solved my transmission's woes.
