Question for you 80 gurus. (Please) (1 Viewer)

[HZJ60 Guy]

SO Im interested in putting a 1HD-FT/R151 swap in an 80 in the near future. Could a guy add to that R151 a Marlin 4.7 t-case (they do fit that transmission) and add some hubs up front and make the truck a part time rig?

Why you ask? I dont need full time four wheedrive. I'd be going diesel for a few reasons, one is fuel economy. Freeing up the front end would help that a lot.

Is this sane, or do you all think me DAFT?

Thanks in advance.

Tom B

 

[alaskacruiser]

Why you ask? I dont need full time four wheedrive. I'd be going diesel for a few reasons, one is fuel economy. Freeing up the front end would help that a lot.

Is this sane, or do you all think me DAFT?

Thanks in advance.

Tom B

Correct me if I'm wrong, but I believe previous attempts at switching to a part-time 4WD system yielded relatively insignificant fuel economy increases.

 

[HZJ60 Guy]

Correct me if I'm wrong, but I believe previous attempts at switching to a part-time 4WD system yielded relatively insignificant fuel economy increases.

The Tech site at Slee has a guy who did the conversion on a gasser getting +20% increase in fuel economy.

Slee conversion to part time 4x4

So if my truck is getting 25mpg, its possible to get a 5mpg increase, to 30mpg.

Or a 410 mile increase in range on full tanks.

That's enough for me to do it.



TB

 

[robbie]

I currently run my 93 with the front hubs disengaged and the drive shaft missing. Christo teases me all the time about this. On a good tank of fuel with my lifted heavy regeared truck I get a increase of 3 mph on a bad tank it is 2 mpg. With the 93-97 trucks with full floater rear this mean you will loose the abs system. And the steering is better with all wheel drive and has less floaty feel. So with my truck I see about a 20% increase on a good day. So anything is possiable if you want it go for it. I have no knowledge about if the Marlin t-case will fit a R151. later robbie

 

[sleeoffroad]

Hey Robbie, it is going to snow tomorrow. Better get the shaft installed again

 

[Junk]

Hey Robbie, it is going to snow tomorrow. Better get the shaft installed again

bwaaahaaahaaa

Part time man in a full time world

At least he's not driving a 4skin like your Christo.

 

[drexx]

10Apr2005 (UTC +8)

SO Im interested in putting a 1HD-FT/R151 swap in an 80 in the near future....

Tom B

Hiya Tom,

Just FYI: the R151 was mated to the 1HZ engine for the HZJ-105, while the HZJ-80 got the H150. The 1FZ-FE, 1HD-T and 1HD-FT were mated to the H151 tranny. I got e-mail from knowledgeable Aussies that say the R151 is the weaker tranny model of the three... and I know for sure that the R151 is for the Hilux pickup here in Asia-Australia.

 

[HZJ60 Guy]

10Apr2005 (UTC +8)



Hiya Tom,

Just FYI: the R151 was mated to the 1HZ engine for the HZJ-105, while the HZJ-80 got the H150. The 1FZ-FE, 1HD-T and 1HD-FT were mated to the H151 tranny. I got e-mail from knowledgeable Aussies that say the R151 is the weaker tranny model of the three... and I know for sure that the R151 is for the Hilux pickup here in Asia-Australia.

Thanks Drexx, that makes it all a mute point. Im sure Marlins tcase wont mate to the H151, whereas it would have to the R151.

So much for that.

Turbo (diesel) bummer.


Tom

 

[Spin]

SO Im interested in putting a 1HD-FT/R151 swap in an 80 in the near future. Could a guy add to that R151 a Marlin 4.7 t-case (they do fit that transmission) and add some hubs up front and make the truck a part time rig?

Why you ask? I dont need full time four wheedrive. I'd be going diesel for a few reasons, one is fuel economy. Freeing up the front end would help that a lot.

Is this sane, or do you all think me DAFT?

Thanks in advance.

Tom B

Have a look here

http://www.marks4wd.com/lc-80SERIESPT4WD.html

 

[BOUNDER]

I would probably take the path of least resistance and find another kindly used rig to suit your purpose - instead of trying to make the LC something it's not. Just my .02

 

[HZJ60 Guy]

Have a look here

http://www.marks4wd.com/lc-80SERIESPT4WD.html

Thanks Spin. That looks like it will do the trick just fine.

I dont like the idea of everything moving, turning and sucking power when it doesnt need to! Like I need an all wheel drive land cruiser 99% of the time?

No I dont. Who does. What if you own an 80 series and you live in Pheonix? Sure need all wheel drive there now dont you?

Give me hubs, or give me death!

Tom

 

[Gold Finger]

SO Im interested in putting a 1HD-FT/R151 swap in an 80 in the near future. Could a guy add to that R151 a Marlin 4.7 t-case (they do fit that transmission) and add some hubs up front and make the truck a part time rig?

Why you ask? I dont need full time four wheedrive. I'd be going diesel for a few reasons, one is fuel economy. Freeing up the front end would help that a lot.

Is this sane, or do you all think me DAFT?

Thanks in advance.

Tom B

I think that the 1HD-FT is a great engine and gives good economy and performance and is an improvement over the 1HD-T and would make a good conversion. What I do not understand is why any one would debase a very good truck by taking the retrograde step of converting it to 2 wheel drive. Having been around Landover’s for years it was a major improvement when they went over to permanent 4 wheel drive in terms of handling and safety etc. I think that the dubious savings in fuel consumption that might be achieved are just not worth it, I doubt weather any thing like 25% could be attained and surly not worth all that hassle and why choose to be without ABS?

 

[Grouseman]

Guys,

I don't have my Cruiser yet, but the conversion makes sense to me. At present I have a 4-Runner that gets 20 mpg, and when I need four wheel drive I just shift into it. My Cruiser will be for long road trips, and then when I get there for 4 wheeling. Why not save the wear and tear on parts and get better gas mileage at the same time?

SS

 

[Gold Finger]

Guys,

I don't have my Cruiser yet, but the conversion makes sense to me. At present I have a 4-Runner that gets 20 mpg, and when I need four wheel drive I just shift into it. My Cruiser will be for long road trips, and then when I get there for 4 wheeling. Why not save the wear and tear on parts and get better gas mileage at the same time?

SS

If you do not power the front axle then the rear axle and all its associated drive gear will take twice the load and power than it was designed for so instead of decreasing stresses you are in creasing them dramatically for other components.

My own experiences of running in two wheel drive a vehicle intended for 4 wheel drive were when repairing a damaged UJ on the front of a Defender. Subjectively no increased power was evident so I suspect no economy either, the drive was awful and drive line slop unbearable and this latter would add considerable loading of components especially when pressing on.

My experiences with series Landover’s noted no difference at all in terms of economy with or with out free wheel hubs engaged and so I removed them as I believe that they were little more than a gimmick.

This is your project and I whish you well with it but I just can not see any benefits but rather more problems in terms of running and long term hassle.

 

[HZJ60 Guy]

If you do not power the front axle then the rear axle and all its associated drive gear will take twice the load and power than it was designed for so instead of decreasing stresses you are in creasing them dramatically for other components.

My own experiences of running in two wheel drive a vehicle intended for 4 wheel drive were when repairing a damaged UJ on the front of a Defender. Subjectively no increased power was evident so I suspect no economy either, the drive was awful and drive line slop unbearable and this latter would add considerable loading of components especially when pressing on.

My experiences with series Landover’s noted no difference at all in terms of economy with or with out free wheel hubs engaged and so I removed them as I believe that they were little more than a gimmick.

This is your project and I whish you well with it but I just can not see any benefits but rather more problems in terms of running and long term hassle.

GF, no disrespect meant here but 99% of trucks on the road arent all wheel drive. 80's have a full floating rear end. They're over built to begin with. Driving that truck in 2wd wont hurt it in anyway. Look, 90+% of the driving of that truck will be on dry pavement. Do I need all wheel drive for dry pavement? If I need four wheel drive I'll ask for it. When I dont, I dont want the front end turning for nothing.

We're not talking about an Audi here. I wont be asking this thing to corner at high speeds. I've driven trucks my entire life. I know how to drive/handle a rear wheel drive vehicle. I want the extra miles per gallon. I want less wear and tear. I want HUBS damn it! I want the control of the system. Just like I dont like auto transmissions because I want the control of the drive train.


TB

 

[e9999]

the point about sending all the power to one axle vs splitting it to 2 is a good one. Indeed, conceivably, it seems like it would be in theory possible to put twice as much as much torque on the rear axle in 2WD as you would in 4wd, which if the engine is pushed to the limit could prove too much.. But that would depend on how much the safety factor is in the design and current condition of the rear axle.
Seems convincing to me, though, that with the freewheeling hubs you would lower the wear on the front but increase it in the rear.

 

[HZJ60 Guy]

I know many people with hyp'd V8's running big HP to their toyota truck rear ends. Power is not an issue or problem for the rear end of an 80.

I like part time four wheel drive. I like 80's. It appears that I can have both.

Wah lah.

TB

 

[robbie]

What control over the drive train do you loose when useing a Auto tranny? The only difference is a 4 speed vs a 5 speed, Down hill control in 1st gear, a little better fuel ecomany. The Auto is easily 3 times stronger, will last longer with proper care, no dry clutchs for a easy 500k miles if taken care of. No slipping the dry clutch to wheel, one less peddle to operate when wheeling. So what control do you loose? later robbie

 

[Ocelot]

I know many people with hyp'd V8's running big HP to their toyota truck rear ends. Power is not an issue or problem for the rear end of an 80.

I like part time four wheel drive. I like 80's. It appears that I can have both.

Wah lah.

TB

Seeing as how overseas 80s are avaliable with part-time 4WD I cant see it being a problem as well unless overseas 80s have a totally different rear end.

 

[HZJ60 Guy]

What control over the drive train do you loose when useing a Auto tranny? The only difference is a 4 speed vs a 5 speed, Down hill control in 1st gear, a little better fuel ecomany. The Auto is easily 3 times stronger, will last longer with proper care, no dry clutchs for a easy 500k miles if taken care of. No slipping the dry clutch to wheel, one less peddle to operate when wheeling. So what control do you loose? later robbie

Lot you cant be serious. What control? You can shift whenever you want. You can control what you are doing! You cant with a slush box. Last longer? Who are you talking to? Change the synthetic fuid in that H151 and when exactly will it wear out? Try never. Change the clutch every 75,000 miles. Look autos are great off road. That torque converter is great. There is NO need for an auto on road in a land cruiser. No need at all.

You loose power, fuel mileage and control.

Nope.


TB