1HD-T gearbox

roscoFJ73 · 06-08-06, 02:02 AM

I got a line on a freshly rebuilt 1HD-T in my area. I was thinking if I bought would it bolt up to my 1HZ H55f?

The seller says yes ,but Birfield.com says it woud need a H151.:confiused:
I tried a search but found conflicting advice.

Can anyone clarify that?

bigbrowndog · 06-08-06, 04:48 AM

yes it will bolt up to the old box. The h150 and 151 are similar boxes and both will bolt up also. The turbo diesel got the 151 and the non turbo and petrol 3f and 3fe got the 150 gearbox with the lower geared first gear.

roscoFJ73 · 06-08-06, 06:13 AM

Quote:

Originally Posted by bigbrowndog

yes it will bolt up to the old box. The h150 and 151 are similar boxes and both will bolt up also. The turbo diesel got the 151 and the non turbo and petrol 3f and 3fe got the 150 gearbox with the lower geared first gear.

Thanks BBD ,I think Beanz2 maybe running a H55f behind his 1HDT

rick_d · 06-08-06, 08:18 AM

mmm, uggh

rick d running H55 behind HD-T too

(icky racing diesel thought up idea in 1996)

PVCruiser · 06-08-06, 09:44 AM

Question:

To run a 1HD-T with H55, do you need the 1HZ bellhousing and input shaft from an H151?

rick_d · 06-08-06, 11:06 AM

hz h55 input + hz bellhousing + either hz clutch/flywheel (275mm) OR
300mm HD flywheel and isuzu clutch.

PVCruiser · 06-08-06, 12:20 PM

Quote:

Originally Posted by rick_d

hz h55 input + hz bellhousing + either hz clutch/flywheel (275mm) OR
300mm HD flywheel and isuzu clutch.

Thanks Rick

Tapage · 06-08-06, 02:06 PM

Quote:

Originally Posted by roscoFJ73

I got a line on a freshly rebuilt 1HD-T in my area. I was thinking if I bought would it bolt up to my 1HZ H55f?

The seller says yes ,but Birfield.com says it woud need a H151.

I tried a search but found conflicting advice.

Can anyone clarify that?

just wondering ..

If you already have 1HZ ( if I'm underestand well ) with H55F the new 1HD-T is a direct swap ..

roscoFJ73 · 06-08-06, 02:35 PM

Quote:

Originally Posted by Tapage

just wondering ..

If you already have 1HZ ( if I'm underestand well ) with H55F the new 1HD-T is a direct swap ..

Im still considering it ,my wallet hasnt quite recovered from the 1HZ rebuild

About the 1HD-T .It was fully rebuilt 130000klms ago . The current owner did not know about BEB delamination and it spun a bearing and has had a new crank and BEB fitted by the original rebuilder. It was to be used in a 80 series ute but is now at the engine rebuilder for sale.
Thanks for the replies.

tlcruiserman · 06-08-06, 10:15 PM

Can someone confirm that H151 input shaft is the same as H55F input shaft the transmission are completly different. I have both and they are different in every way I can think of, not to mention that 1HD-T clutch parts are very differnt from 1HZ clutch parts.

Cheers,

Michael

beanz2 · 06-08-06, 11:56 PM

Quote:

Originally Posted by roscoFJ73

Thanks BBD ,I think Beanz2 maybe running a H55f behind his 1HDT

Yes, but not for perpetuity.

Quote:

Originally Posted by Tapage

just wondering ..

If you already have 1HZ ( if I'm underestand well ) with H55F the new 1HD-T is a direct swap ..

Yes, if you keep the 1HZ flywheel and clutch, or use a 300 mm Isuzu clutch and HDT pressure plate.

Quote:

Originally Posted by tlcruiserman

Can someone confirm that H151 input shaft is the same as H55F input shaft the transmission are completly different. I have both and they are different in every way I can think of, not to mention that 1HD-T clutch parts are very differnt from 1HZ clutch parts.

Cheers,

Michael

No very different.

Dave

beanz2 · 06-08-06, 11:59 PM

Quote:

Originally Posted by roscoFJ73

I got a line on a freshly rebuilt 1HD-T in my area. I was thinking if I bought would it bolt up to my 1HZ H55f?

The seller says yes ,but Birfield.com says it woud need a H151.:confiused:
I tried a search but found conflicting advice.

Can anyone clarify that?

Go for it, Ross. Or sell it to me

Dave

Tapage · 06-09-06, 10:21 AM

Quote:

Originally Posted by tlcruiserman

Can someone confirm that H151 input shaft is the same as H55F

NO ..

are completediferent .. input shaft.

pjohnson · 06-09-06, 10:34 AM

Is the tailhousing and output shaft on the H150/151 the same as the R150/151?

If not, are the output shafts interchangeable?

Thanks,
Phil

tlcruiserman · 06-09-06, 11:01 AM

Quote:

Originally Posted by pjohnson

Is the tailhousing and output shaft on the H150/151 the same as the R150/151?

No they are not

If not, are the output shafts interchangeable?

I do not think so, the H is a lot beefier than the R

Thanks,
Phil

Thanks,

Michael

rick_d · 06-09-06, 11:05 AM

hz input 21 splines

hd-t input (H15X) 14 splines

you cannot make a H15X input fit a H55.

rear ends of H15X and R15X I believe are different.

the cousin R14X (4sp, used in PZJ75 mine trucks) has a standard issue 38mm t-case on rear. not the 80 series t-case system.

Dimensionally the H15X and R15X are two vastly different sizes and shifter locations.

pjohnson · 06-09-06, 12:42 PM

Thanks for the information. Toyota has been pretty good about standardization in the past. An example is the x340x series automatics. There are 3 distinct transmissions that all share the same case. I was thinking the H15x and R15x might share the same case design(?) and therefore the adapter options for the R15x would potentially work for the H15x.

Phil

06-08-06, 02:02 AM	#1
roscoFJ73 Diesel for blood Join Date: Jul 2003 Location: west australia Posts: 6,296	1HD-T gearbox I got a line on a freshly rebuilt 1HD-T in my area. I was thinking if I bought would it bolt up to my 1HZ H55f? The seller says yes ,but Birfield.com says it woud need a H151.:confiused: I tried a search but found conflicting advice. Can anyone clarify that? __________________ HZJ75 cab chassis 95 model ,stocker FJ73+1HZ Diesel NEW GEARBOX 1HZ =same power as 3F with 30% better fuel economy 2in Dobinsons lift.Powerdown adj shocks 33 in BFG A/T HJ61 with slidin windas regrettfully SOLD:( Volvo 740 GL

06-08-06, 09:44 AM	#5
PVCruiser IH8MUD Addict Join Date: Feb 2005 Location: Kalifornia TLCA# 15178 Posts: 528	Question: To run a 1HD-T with H55, do you need the 1HZ bellhousing and input shaft from an H151? __________________ FJ-55 Weatherstripping www.pvcruisers.com FOR SALE: '81 HJ-47 Troopy LHD '07 Vortec Motor, 4L60E Trans, New Steel Body, PPG Paint, Rebuilt from the Ground Up '79 HJ-45 Troopy RHD

06-08-06, 10:15 PM	#10
tlcruiserman IH8MUD Lifer Join Date: Jun 2004 Location: San Diego, CA USA TLCA# 7932 Posts: 1,071	Can someone confirm that H151 input shaft is the same as H55F input shaft the transmission are completly different. I have both and they are different in every way I can think of, not to mention that 1HD-T clutch parts are very differnt from 1HZ clutch parts. Cheers, Michael __________________ Michael tlcruiserman@westcoastcruisers.com West Coast Cruisers Incorporated

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06-08-06, 04:48 AM	#2
bigbrowndog IH8MUD Lifer Join Date: Apr 2005 Location: N.Q. australia Posts: 1,282	yes it will bolt up to the old box. The h150 and 151 are similar boxes and both will bolt up also. The turbo diesel got the 151 and the non turbo and petrol 3f and 3fe got the 150 gearbox with the lower geared first gear.

06-08-06, 08:18 AM	#4
rick_d IH8MUD Addict Join Date: Apr 2002 Posts: 793	mmm, uggh rick d running H55 behind HD-T too (icky racing diesel thought up idea in 1996)

06-08-06, 11:06 AM	#6
rick_d IH8MUD Addict Join Date: Apr 2002 Posts: 793	hz h55 input + hz bellhousing + either hz clutch/flywheel (275mm) OR 300mm HD flywheel and isuzu clutch.

06-09-06, 10:34 AM	#14
pjohnson IH8MUD Regular Join Date: Jan 2003 Location: GarlicLand, Kalifornia Posts: 291	Is the tailhousing and output shaft on the H150/151 the same as the R150/151? If not, are the output shafts interchangeable? Thanks, Phil

06-09-06, 11:05 AM	#16
rick_d IH8MUD Addict Join Date: Apr 2002 Posts: 793	hz input 21 splines hd-t input (H15X) 14 splines you cannot make a H15X input fit a H55. rear ends of H15X and R15X I believe are different. the cousin R14X (4sp, used in PZJ75 mine trucks) has a standard issue 38mm t-case on rear. not the 80 series t-case system. Dimensionally the H15X and R15X are two vastly different sizes and shifter locations.

06-09-06, 12:42 PM	#17
pjohnson IH8MUD Regular Join Date: Jan 2003 Location: GarlicLand, Kalifornia Posts: 291	Thanks for the information. Toyota has been pretty good about standardization in the past. An example is the x340x series automatics. There are 3 distinct transmissions that all share the same case. I was thinking the H15x and R15x might share the same case design(?) and therefore the adapter options for the R15x would potentially work for the H15x. Phil