1HD-T power band - Page 2

wussyPup · 08-03-06, 12:44 AM

Thanks!

I've also found out that the torque converter doesn't lock up in 3rd gear, so there is a lot of slippage when pulling a load at higher RPMs which can cause the tranny to overheat.

Downshifting may reduce EGTs but will increase ATF temps.

-Steve

Tapage · 08-03-06, 09:21 AM

Quote:

Originally Posted by wussyPup

Downshifting may reduce EGTs but will increase ATF temps.

it depends .. if you donwshift with no slipage .. not neceary up the ATF temp.

panamacruiser · 08-05-06, 07:42 PM

I believe that once the load is on the move you shouldn't have much effort to keep it going but, if you plan to haul for an extended period of time, be sure to let that tranny work where it works best that is if you're going uphill downshift to 2n and go so the engine has enough power but it doesn't mean that you should go fast of course this applies for long and steep hills for a short one you shouldn't have any trouble leaving the trans as is. For the record I've never seen those AT/temp lights go on in any land cruiser i saw it once in a Montero but thats another story. Besides is your tranny working properly have you given it proper care?

jcolvin · 08-09-06, 02:18 AM

Quote:

Originally Posted by Tapage

Steve ..

In a long uphill O/D off is allways your rule .. if you heva your shifter points adjusted soo soft .. manual shift maybe is a good idea .

This would be a really good way to burn your tranny. Out of O/D the A442 runs hot, because the Torque converter is so inefficient. If you can get enough power in OD without exceeding max EGT's, leave the OD on. Better yet, get a tranny temp gauge so you can keep an eye on what's going on. By the time the ATF light comes on, you may be doing damage = $$$$. Just ask wussypup what sort of $ we're talking about.

podiev · 11-07-06, 06:34 PM

Quote:

Originally Posted by panamacruiser

hey have you ever considered loosing the full time 4wd? switch to manual lock hubs and you'll get a far better fuel economy I own a 1995 hdj80, 1hd-t, automatic, dual fuel tanks and it came with manual locking hubs and it is a vx not a gx model

How you do turn off the full-time 4wd? Is there a switch or fuse or something to turn off? I don't have the manuals - I also don't see some obvious switch on the dashboard that says "4WD off" or something on theI have a 1990 HDJ81 VX Limited.

70sguy · 11-07-06, 11:49 PM

There are kits out there to do this, a set of manual hubs and some parts to replace the center diff in the Tcase. The center diff button becomes the front drive button.

Martin White · 11-08-06, 02:36 PM

Haven't people who did this said it made no difference in terms of fuel consumption? I suppose it might reduce some wear on the front end.

Tapage · 11-08-06, 02:56 PM

Quote:

Originally Posted by Martin White

Haven't people who did this said it made no difference in terms of fuel consumption? I suppose it might reduce some wear on the front end.

I can't talk about consumption .. but centanly, les frond diff wear and are by far more faster .!

Martin White · 11-08-06, 07:00 PM

I'm amazed that anyone would want to run an 80 series up to 180 kph. I didn't even know they could go that fast.

Tapage · 11-09-06, 08:29 AM

Quote:

Originally Posted by Martin White

I'm amazed that anyone would want to run an 80 series up to 180 kph. I didn't even know they could go that fast.

I'm alwais in love with a sport fast car .. and speed, but If you drive 200 km/h one car that is designed for speed, and go up and drive a Cruiser more dan 140 km/h you can feel the diference ..

I'm happy driving my Cruiser at 120km/h no more .. this is great speed for a 4x4 2 ton rigs ..

83bj60 · 11-10-06, 09:42 PM

Quote:

Originally Posted by panamacruiser

I've ran my 1HD-T to a max of 180kphr and have no trouble with it. I did it for about an hour and a half! But towing, that's another story

I would LOVE to hear about what you did to your engine to make it able to do that speed for 1.5 hours straight without damage, on what tires, whether you have a bull bar or roof rack and what the fuel consumption was, what kind of oil you were using, anything!

Pretty Please

dieseldan · 11-11-06, 06:26 PM

Been wondering about this - i know - search - as most of you are all really familiar with these trucks... who's changed over?

Quote:

Originally Posted by panamacruiser

hey have you ever considered loosing the full time 4wd? switch to manual lock hubs and you'll get a far better fuel economy I own a 1995 hdj80, 1hd-t, automatic, dual fuel tanks and it came with manual locking hubs and it is a vx not a gx model

rove_mcanus · 11-12-06, 06:04 PM

i've driven 1hz powered buses, they sit on 3000rpm at 100kph thanks to shitty gearing. at 110 it's about 3150 rpm. I've sat on that for hours on end, and the bus weighs abotu 3.5 tonne.

a 1hdt should do it easy. don't underestimate a toyota diesel's ability to rev.

also i've heard of someone running two 1hdt's in a boat, at 3500rpm (where max power is)

landcrusher80 · 11-14-06, 06:18 AM

Quote:

Originally Posted by Martin White

I'm amazed that anyone would want to run an 80 series up to 180 kph. I didn't even know they could go that fast.

max speed 177 KM/H for me. Measured with a GPS.
37' Good Year MT's 4:11 gears. 7' lift.

Kind of scary ....

Land Crusher80

83bj60 · 11-14-06, 10:51 AM

Quote:

Originally Posted by landcrusher80

max speed 177 KM/H for me. Measured with a GPS.
37' Good Year MT's 4:11 gears. 7' lift.

Kind of scary ....

Land Crusher80

Wow! At that speed, how much fuel does the truck consume? Any idea? Are aftermarket fuel meters available for this vehicle?

Thanks for your input!

Chris

landcrusher80 · 11-14-06, 02:26 PM

Quote:

Originally Posted by 83bj60

Wow! At that speed, how much fuel does the truck consume? Any idea? Are aftermarket fuel meters available for this vehicle?

Thanks for your input!

Chris

Sorry no idea pal.

Cheers,

Land Crusher 80

08-03-06, 12:44 AM	#31
wussyPup just another VI Cruiser Join Date: Apr 2005 Location: Langford, British Columbia, Canada TLCA# 15565 Posts: 692	Thanks! I've also found out that the torque converter doesn't lock up in 3rd gear, so there is a lot of slippage when pulling a load at higher RPMs which can cause the tranny to overheat. Downshifting may reduce EGTs but will increase ATF temps. -Steve __________________ '90 HDJ81 for sale soon: '90 Trooper past: '76 FJ55 - more rust than steel; still miss it

11-07-06, 11:49 PM	#36
70sguy IH8MUD Addict Join Date: Nov 2003 Location: Greendale B.C Canada Posts: 578	There are kits out there to do this, a set of manual hubs and some parts to replace the center diff in the Tcase. The center diff button becomes the front drive button. __________________ 93 1HD-T powered FZJ80-Extreme valve body-Walbro-ARB- Snork-OME- SOLD! 97 FZJ80 Antique Sage 40th, bone stock. 1HD-FT 5spd conversion starting soon VW A4 Jetta TDI My other diesel is a Locomotive www.gscruiserparts.com

11-08-06, 02:36 PM	#37
Martin White IH8MUD Lifer Join Date: Mar 2006 Location: Abbotsford, B.C. Posts: 1,097	Haven't people who did this said it made no difference in terms of fuel consumption? I suppose it might reduce some wear on the front end. __________________ 90 VX Ltd, HDJ81 RHD, 1HD-T 4.2l turbodiesel, auto, BFG 285-75-16 AT's, 3" lift, 15mm spacers all round, OME heavy / medium springs, triple locked, JDM tube frt bumper, 3" mandrel bent exhaust, aeroturbine muffler, Safari Snorkel. SOLD - to backroads backpacker...

11-08-06, 07:00 PM	#39
Martin White IH8MUD Lifer Join Date: Mar 2006 Location: Abbotsford, B.C. Posts: 1,097	I'm amazed that anyone would want to run an 80 series up to 180 kph. I didn't even know they could go that fast. __________________ 90 VX Ltd, HDJ81 RHD, 1HD-T 4.2l turbodiesel, auto, BFG 285-75-16 AT's, 3" lift, 15mm spacers all round, OME heavy / medium springs, triple locked, JDM tube frt bumper, 3" mandrel bent exhaust, aeroturbine muffler, Safari Snorkel. SOLD - to backroads backpacker...

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08-05-06, 07:42 PM	#33
panamacruiser IH8MUD Rookie Join Date: Jun 2006 Location: Panama city, Rep of Panama Posts: 8	I believe that once the load is on the move you shouldn't have much effort to keep it going but, if you plan to haul for an extended period of time, be sure to let that tranny work where it works best that is if you're going uphill downshift to 2n and go so the engine has enough power but it doesn't mean that you should go fast of course this applies for long and steep hills for a short one you shouldn't have any trouble leaving the trans as is. For the record I've never seen those AT/temp lights go on in any land cruiser i saw it once in a Montero but thats another story. Besides is your tranny working properly have you given it proper care?

11-12-06, 06:04 PM	#43
rove_mcanus IH8MUD Junior Join Date: Jun 2005 Posts: 104	i've driven 1hz powered buses, they sit on 3000rpm at 100kph thanks to shitty gearing. at 110 it's about 3150 rpm. I've sat on that for hours on end, and the bus weighs abotu 3.5 tonne. a 1hdt should do it easy. don't underestimate a toyota diesel's ability to rev. also i've heard of someone running two 1hdt's in a boat, at 3500rpm (where max power is)