Doubler or nothing....TECH ONLY

[Delancy]

Don't ask why, because it doesn't matter and yes, I do realize that many don't even know these components existed, much less, hands on experience.

BUT, there's many with insight in the R15X/RF1A, and yo' momma prolly understands doublers better than I do, so throwing it out for TECH ONLY input.

Why in the 80 forum?

Why not hardcore?

Why not Pirate?

Because I feel at home, uninhibited to let ignorance shine, and, hopefully, one of the non-US members knows where some other idealogical idiot elsewhere in the world has completed similar, and can link a thread not in Cyrillic script, that Google translate redirects to a Mongolian porn site upon attempt to convert to 'Merican.

'Nuff talk. Tech next.

 

[Delancy]

This is what I think will work:

H150F

AA RF1A Case (not drilled)

MC 4:7-1 Gearset

HF1A converted to R151F input
(36212-60130 from HZJ105s with R151F/HF1As)

Pretty much, inserting a mini truck reduction unit between an H150F/HF1A, using a mixture of H/R output and input shafts to solidify the union.

What am I missing?

Have come at this every way for well over a year, and it appears doable, without adapters or couplers (not that I care, but nothing is available, anyway) and best I can come up with.

If it works for me it should work for HF2A since the A343F is also married to both transfer case iterations, so put those brains to work and tell me how to Guinea pig this damn thing.

 

[Rivman1243]

Following

 

[Delancy]

Following

Well, watch out for the bar, son, 'cause it's awfully low.

 

[Tapage]

why not just stick with an R151 ...?

 

[Delancy]

why not just stick with an R151 ...?

David,

Because the H is for Heavy Duty.....and I have two H15Xs, already.

Plus, a tiger can't change its stripes and, as the ever wise Joe K once said, ingrained in my DNA is the ability to find solutions with problems, to then find solutions for those problems, and create anew.

It's the circle of life, but keeps me busy, at least.

 

[cruisermatt]

What's the spline count on the transmission output? That's what will dictate whether this is possible.

The mini-truck transfer case is available in 21 and 23 spline, correct?

 

[Rivman1243]

What's the spline count on the transmission output? That's what will dictate whether this is possible.

The mini-truck transfer case is available in 21 and 23 spline, correct?

Yes you're correct

 

[cruisermatt]

I think the H150f/HF1A is a 19-spline connection.

What it looks like what you'll need to make (have made) is an adapter plate,or drill the RF1A case, for between the H150f and RF1A, and a custom input gear for the RF1A. Then custom output shaft for the RF1A, reasoning twofold, to match the thickness of the second adapter plate and to be a 19-spline output to go into the HF1A.

Just the same as any other transfer case adapter. Any competent machine shop should be able to make these part providing they have the equipment to preform gear hobbing on a mill.

 

[cruisermatt]

By the way, it would be exactly half the effort I previously described to attach an Atlas 4-speed to the H150f.
(because you'd only have to adapt one side)

 

[slow95z]

Atlas is the way to go here unless it is a trail only truck. My solution is going to be 5.3 - 4l60e - toy box doubler. The driveshaft will just come out center and go to the offset axle.

 

[Delancy]

What's the spline count on the transmission output?

Doesn't matter, Matt. Can swap the H for R output, just like Mr. T did.

First a lesson on Mr. T's digits, that I'm CERTAIN I'll be corrected on, if I err:

I'm assuming the Hino puts the "H" in H15X and HFXA, as Aisin does the "A" in A44X, A343F, A750F.

I know that -60XXX parts are Cruiser specific and 35XXX are Hilux and 74XXX are Supra, so on.

Case points:

There are numerous R151F/HF1A even BF1A OR unions.

In the HZJ105, using an adapter housing (36107-60020) to extend the overall length of the R151F to the same as H15XF/A343F, along with a coupler/gear combo (36212-60130) on a Cruiser specific R output shaft (33321-60130)

HZJ79s similarly adapt an R151F to BF1A using adapter housing and coupler, with a Hilux (that'd be mini to you 'Mericans) specific output shaft, (33321-35140).

(think like Mr. T. One frame, one cross member location, one engine mount location, with many different engines, transmissions, and transfer cases that fit)

There is a difference between the R151F/HF1A input gear and the H15XF mating of same, but they're interchangeable.

H15X specific HF1A input shaft/gear (36212-60120)

R151F specific HF1A input gear
(36212-60130)

The mini-truck transfer case is available in 21 and 23 spline, correct?

Yes.

I speculate MC figured this much out in the mid 90s, but the 23 spline OE "HD" assembly sold originally as is from the HF1A.

 

[Delancy]

I think the H150f/HF1A is a 19-spline connection.

Irrelevant, since the H15XF and R151F output gears and HF1A/RF1A input gear assemblies are interchangeable......

But guess what?

4.7:1 is available for the R....

Here's a Hilux variant, showing the OE adapter housing and HF1A input. What's not depicted is the coupler between, but can get the idea.

What it looks like what you'll need to make (have made) is an adapter plate,or drill the RF1A case, for between the H150f and RF1A,

Order AA cast case blank, or send the housing to have mated to, no adapter, beyond the OE necessary......I think.

and a custom input gear for the RF1A. Then custom output shaft for the RF1A, reasoning twofold, to match the thickness of the second adapter plate and to be a 19-spline output to go into the HF1A.

No need for custom. All OE..... which would cost more than custom, except this formula applies:

R$$ = 25% of H$$

By the way, it would be exactly half the effort...

You should know better.

 

[Delancy]

Atlas is the way to go here unless it is a trail only truck.

Cruisers (or Frankenstein-ian versions thereof) don't belong on trailers.

Buggies are exponentially cheaper to build, easier to fix, easier to wheel, easier all the way around, but lack patronage to heritage that so many have come to appreciate as legendary.

I drank the kool-aid too long ago for antidote to be effective.

 

[jeffro109]

and some of us would just like to have a friggin 5 speed....but I like where your head is at

 

[slow95z]

Buggies are exponentially cheaper to build, easier to fix, easier to wheel, easier all the way around, but lack patronage to heritage that so many have come to appreciate as legendary.

if you find a rock here you might want to see what concrete company poured it so let me just say my idea of off-road is probably different than yours. i needed something that could hold 6 people and when i can pick a good running cruiser up for 2K here i see no reason to start with any other platform. no way i could build a buggy for 5K, which is what i plan to have in my cruiser when i am done.

 

[Delancy]

and some of us would just like to have a friggin 5 speed....but I like where your head is at

Messaging my PayPal now. Reply with your shipping address and I will HAPPILY and GLADLY oblige.

let me just say my idea of off-road is probably different than yours

I ain't raggin', man.

We all have different intentions, different styles, and are all a varying stages of life and the mental decay that life's progression fosters.

More than anything, my point was Cruisers don't go on trailers, and if my intentions were a trailer rig, it'd be damn stupid, from an ROI perspective, to build a Cruiser versus a buggy.

At least the latter isn't hindered by a self imposed, borderline obsession with OE-ish Cruiser 'builds'.

 

[slow95z]

i dont know about tulsa but in this redneck part of the world you can drive a tractor tired truck down the road so a trailer is a moot point

 

[cruisermatt]

What happened to TECH ONLY?

 

[Delancy]

AA's site has returned, so copying and pasting the previously depicted housing info:

51-5911 : Heavy Duty Toyota Truck gear driven transfer case gear reduction housing. (#51-5911)

he 4.77 & 5.0 gears, the stock case must be machined or ground to provide clearance for the cluster gear. On some 4.0 cluster gears, we have found that the case will need to be relieved due to core shift. You can grind the necessary clearance; however, it is recommended to machine the case for this clearance.
If your not sure about this grinding or the machining process, we now offer a new heavy duty front Toyota housing. Our new Toyota HD housing can be used as a crawler box with stock Toyota gears or with our low gear sets. It can also be used as a new front housing for the lower gear sets listed above. This housing will save you time and money. When installing our low gears into a stock Toyota housing, grinding & machining on the stock case is required. Our housing has been engineered with additional clearance for our gear sets. Thus, hours of grinding & expensive machining labor are eliminated. This housing is made from 356-T6 heat-treated aluminum alloy with an average thickness of .550”. A “stock” housing is die cast aluminum and only has an average wall thickness of .200”.