Gearbox Swap

Submitted: Sunday, Jun 07, 2020 at 06:18
ThreadID: 140119 Views:2419 Replies:4 FollowUps:4
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Will a gearbox out of a 80 series fit into a 105 series. What mods if any
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Reply By: Mikee5 - Sunday, Jun 07, 2020 at 07:20

Sunday, Jun 07, 2020 at 07:20
It will fit in the back. Tie it down and drive it to a workshop.
AnswerID: 632011

Reply By: Member - DOZER - Sunday, Jun 07, 2020 at 12:26

Sunday, Jun 07, 2020 at 12:26
You will need a complete gearbox and transfer case compatible with your motor and driveline (constant or part time) The front flange of the rear tailshaft will also be different bolt pattern, so a complete tailshaft or just the front slip yoke and a balance afterwards....whilst you have not gave any indication on motor, i would think you have a 1hz with r box. If it is a gxl and you have full time, you need a tranfer from a 100 turbo diesel or a 105 petrol constant. The actual transfer casing holds the 4wd lever, unlike the 80 series that is on the box. If you have a standard van and part time, a simple 80 series gearbox and transfer works, as the lever comes out the floor under the dash. The r151 rear tailshaft has hilux /prado/ sized uni on the front of it. The h150 transfer has larger cruiser sized flange. Tailshaft length is also different full time to part time. Lastly.....if you buy a petrol 1fz gearbox or a turbo diesel hdj80 one, the front spline on both are thesame, and different to 1hz, but an izuzu 11 inch clutch plate marries them together. So there are many options to get you bulletproof.
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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Reply By: 1381 - Sunday, Jun 07, 2020 at 12:47

Sunday, Jun 07, 2020 at 12:47
Wow....You really know your stuff. Thanks.
Engine is a HDT out of a 80 series with the gearbox.
So will the 100 series box fit straight in?

Cheers
AnswerID: 632017

Follow Up By: RMD - Sunday, Jun 07, 2020 at 13:55

Sunday, Jun 07, 2020 at 13:55
DOZER's info is pretty comprehensive, good work, but now you are asking if a 100 series box will fit straight in!
Are you now wanting to fit a 100 series box in an 80 or an 80 series box into a 100 series. Which way around is it?

Dozer gave you plenty of items to check and even ways to solve matchup problems. Perhaps it is best to full explain what you have, Part or full time 4wd and any other related info so replies can zero in on your request. I would go away and have a think first before asking an opposite direction question.
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FollowupID: 908453

Follow Up By: OzzieCruiser - Sunday, Jun 07, 2020 at 14:53

Sunday, Jun 07, 2020 at 14:53
RMD - try reading the OPs question.

Pretty clear to me "Will a gearbox out of a 80 series fit into a 105 series"?

He is not asking "will a gearbox out of a 105 series fit into a 80 series/"
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Follow Up By: RMD - Sunday, Jun 07, 2020 at 18:09

Sunday, Jun 07, 2020 at 18:09
Ozzie cruiser
He has just asked "will a 100 series box fit straight in". Therefore if out of a 100 series, YES the box will fit in. It came out of a 100 series. Originally asking if an 80 series box with fit a 100 series. He didn,'t mention 105 again, changed to 100?
He is mentioning two gearboxes and it isn't clear what he means. He knows we don't, having changed a few combinations I like to know what is meant.
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FollowupID: 908455

Follow Up By: Frank P (NSW) - Sunday, Jun 07, 2020 at 18:24

Sunday, Jun 07, 2020 at 18:24
The original question in the opening post was
"Will a gearbox out of a 80 series fit into a 105 series. What mods if any"

Then later the OP, 1381, says

"Engine is a HDT out of a 80 series with the gearbox.
So will the 100 series box fit straight in?"

So 1381, what do you wish to fit to what?

I think I'm not the only one who is a bit confused.
FrankP

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Reply By: Member - DOZER - Sunday, Jun 07, 2020 at 20:17

Sunday, Jun 07, 2020 at 20:17
ok, ive been there done that, not a mechanic, but have owned many cruisers over the years. The transfer case from a v8 100 series manual or auto will fit to your hdt 5 speed, a factory t/d 100 transfer or a 1fzfe transfer from a 105 will all fit, as these all run the same gearbox you have bought with the motor. IF you have a GXL 1hz with r151 and transfer, the splines are different on the 2 shafts, h151 to r151 transfer, so you need to source one of the transfers i mentioned earlier, if you have a std van, an 80 series transfer will work and 4wd lever comes up through the hole in the floor. All that aside, if you are asking if the current r box you have will bolt up, and its a 1hz your changing, the clutch splines are different, and the clutch sizes are different. The r box will not last, nor will the 1hz clutch, but if you want to give it a go, you need to swap flywheel/clutch from 1hz to hdt.
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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Classifieds: Bt50/Ranger Speedy grande2 18x8 alloys (x4), Landcruiser 200 series/100 series 4 alloy rims with tyres and nuts GC

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