1977 FJ40 Tailshafts

Submitted: Monday, Jul 28, 2008 at 14:45

ThreadID: 60244 Views:2257 Replies:3 FollowUps:4

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1977FJ40

Hey guys, Ive got a 1977 FJ40 that Im working on and I changed the front diff to disc brakes. I installed the motor and gearbox and when I tried to add the front tailshaft I noticed that its 100mm to short.
Is there a difference in the diff sizes between a drum brake diff and disc brake diff?

any help would be great.
mat

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Reply By: Member - Tour Boy Springsure- Monday, Jul 28, 2008 at 18:17

Monday, Jul 28, 2008 at 18:17

Hi Mat,
This may be a silly question but you did put the longer tailshaft on the front and the short one on the back?

The diffs as far as I remember are the same unless somone did a bodgy job on it sometime in the past.

Regards
Dave

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Dave
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AnswerID: 317704

Follow Up By: 1977FJ40 - Monday, Jul 28, 2008 at 18:20

Monday, Jul 28, 2008 at 18:20

Hi Dave, yes the short tailshaft is at the back and the longer one at the front.

thanks

FollowupID: 584045

Reply By: Peter 2 - Monday, Jul 28, 2008 at 19:16

Monday, Jul 28, 2008 at 19:16

What did the disc brake front diff housing come off ?
From 1990 on everything had a small front diff centre.

AnswerID: 317720

Reply By: donk - Monday, Jul 28, 2008 at 23:20

Monday, Jul 28, 2008 at 23:20

I don't suppose you have had the front springs out & put them back in the wrong way around & the front axle housing is sitting to far forward (i have seen this before)

Regards Don

AnswerID: 317788

Follow Up By: 1977FJ40 - Tuesday, Jul 29, 2008 at 00:07

Tuesday, Jul 29, 2008 at 00:07

Hi Don, thanks for the info so I can double check what ive done is the short side of the springs supposed to be facing inwards or outwards??

FollowupID: 584138

Follow Up By: ross - Tuesday, Jul 29, 2008 at 10:50

Tuesday, Jul 29, 2008 at 10:50

I would have thought the short side of the spring goes to the rear (if thats what you mean by inwards)

I say that because ,usually the competion rock climber guys turn their springs around for a longer wheelbase.

I wouldnt have thought it would shift the axle forward by 100mm though.
More like 30-40mm

FollowupID: 584181

Follow Up By: 1977FJ40 - Tuesday, Jul 29, 2008 at 17:09

Tuesday, Jul 29, 2008 at 17:09

Hi Ross,

Thanks that was the problem I had the springs around the opposite way. The short side of the spring was facing towards the front bumper instead of the rear.

thanks for all the help.

FollowupID: 584281