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Nick S
28-02-08, 08:07 PM
Hello all,

I have justed replaced the rear gearbox seal on my borg warner T5 gearbox and have had to removed the propshaft. The universal joint which connects to the diff is held together by 4no bolts (a 15mm socket fits these loosely) I think the thread is UNF (don't ask me why I think it's that) and there is KAMAX 10g (or 109) printed on the head. The outside diameter of the fine thread is 9.9mm.

Can anyone tell me what I should torque these down to and if I should use thread lock compound or not? A friend told me not to torque them down at all, but I am uncertain this is good advice.

Cheers chaps and chapess'

Nick.

wilf
28-02-08, 09:15 PM
Nick - these should be special high tensile bolts from the likes of John gordon jag spares -if yours have threads all the way up to the heads they are wrong 'uns - they should have an unthreaded and sized portion that goes through both flanges to provide the drive - i.e. acts like a dowel.

Also, the nuts should be nylock types, and they really ought to be replaced once taken off. As for torque spec, jag manual says 34 lb ft or 46 Nm

HTH

Nick S
28-02-08, 09:25 PM
Nick - these should be special high tensile bolts from the likes of John gordon jag spares -if yours have threads all the way up to the heads they are wrong 'uns - they should have an unthreaded and sized portion that goes through both flanges to provide the drive - i.e. acts like a dowel.

Also, the nuts should be nylock types, and they really ought to be replaced once taken off. As for torque spec, jag manual says 34 lb ft or 46 Nm

HTH

Hi Wilf,

The bolts are fully threaded, however there is no nut, as there is an internal thread on the flange of the diff. There is 16mm of thread on the bolt and it is 17.5 mm long including the chamfer at the start of the bolt.

Do you think I should change these, Big Tone says I have a Jag Diff.

Nick.

wilf
29-02-08, 08:35 AM
Nick - different arrangement to any jag diff I have seen - the flanges usually just have plain holes.

In your case, I would make damm sure they are best quality high tensile bolts, use threadlocker having degreased bolts and threaded holes, and pull up to around the same torque setting as I mentioned before.

Still puzzled tho' as to why yours is different. Any pics?

Nick S
29-02-08, 09:56 AM
Nick - different arrangement to any jag diff I have seen - the flanges usually just have plain holes.

In your case, I would make damm sure they are best quality high tensile bolts, use threadlocker having degreased bolts and threaded holes, and pull up to around the same torque setting as I mentioned before.

Still puzzled tho' as to why yours is different. Any pics?

Hi Wilf,

I didn't know it was a jag rear end until Tony M told me, I will take a picture later on and attempt to post it.

Thanks for your help so far.

Cheers

Ncik.

tonym
01-03-08, 03:21 AM
Hi Wilf,

I didn't know it was a jag rear end until Tony M told me, I will take a picture later on and attempt to post it.

Thanks for your help so far.

Cheers

Ncik.

Before i get the blame here, I made the assumption that the magnum used a jag diff seeing as it had jag fronts, I never actually looked to be sure ;)

Nick S
01-03-08, 08:08 AM
Before i get the blame here, I made the assumption that the magnum used a jag diff seeing as it had jag fronts, I never actually looked to be sure ;)

Calm down.................. it's only a diff ;-)

I am going to take a photo of the diff this morning and post on the forum.

Any idea where I can these top quality bolts Wilf mentioned.

Cheers

Nick.

tonym
01-03-08, 08:44 AM
Any idea where I can these top quality bolts Wilf mentioned.


Top quality bolt shop??

:mrgreen::mrgreen:

TonyD
01-03-08, 09:43 AM
Top quality bolt shop??

:mrgreen::mrgreen:


Theres a place CBH Fasteners on Evesham Rd in Headless Cross in Redditch that I use thats a goldmine for nuts and bolts etc and is also very inexpensive for the "fancy" blingtastic stainless stuff as well. Dont know where you are in Warks but I highly reccommend this as a "Top Quality bolt shop."

Cheers,

Tony

Nick S
01-03-08, 10:51 AM
Top quality bolt shop??

:mrgreen::mrgreen:

My respect for you is fuelled by your wit..............

Nick S
01-03-08, 10:52 AM
Top quality bolt shop??

:mrgreen::mrgreen:

My respect for you is fueled by your wit..............

TINKA
01-03-08, 10:58 AM
My respect for you is fueled by your wit..............


Hi mate how are you.:) Are you not coming down with us to Lemans.:confused:

Nick S
01-03-08, 11:48 AM
Hi Martin,

How & you and Helen?

Apologies for not being at the last few EM meets, I am stacked at work at the moment. I have arranged to go to Lemans with a friend (however he can only get the Friday and Monday off work) so I intend to go down to Newhaven on the Thurs Night / Friday Morning. I was intending on going with Paul (AKA Fatboy) from Nuneaton, however I think he may be going on the Wednesday Night / Thursday Morning crossing.

I have just moved house to a little village outside Twycross, which has a cracking little pub / restaurant with a good car park. I have spoken to the landlord who would be more than happy to accomodate us for a meet. I checked with Tony M who says is should be OK to host a EM Meet, subject to checking with you (we are quite close to WM region ~ whats the SP with inter region meets and how do I book it in with you)

Give us a ring / email (nsmith@axiomltd.co.uk) to discuss

Cheers

Nick.

TonyD
01-03-08, 12:22 PM
so I intend to go down to Newhaven on the Thurs Night / Friday Morning.



We're booked on that crossing, so hopefully we won't be alone.

Cheers,

Tony

Nick S
01-03-08, 12:42 PM
We're booked on that crossing, so hopefully we won't be alone.

Cheers,

Tony

Hi Tony,

If Paul is booked on the Weds / Thurs crossing, maybe we could meet en route ~ depending on times etc

Nick.

dingocooke
01-03-08, 01:00 PM
I thought magnums used sierra cosworth rear diff??

Any way for a nice high tensile fastener what want is something like Unbrako cap head bolts (if you can get them in ok, or failing that bolts as opposed to set screws (a true bolt has a plain portion under the head then thread, a set screw is a 'bolt' that is threaded right under the head).
Or you could dowel the flanges together and use set screws. The plain portion of the bolt should be as snug a fit as possible in the holeto stop back and forth creep of the flanges under heavy acceleration/deceleration.

Hope this is some help and apologies in advance if this is teaching granny to suck eggs

Nick S
03-03-08, 07:05 AM
I thought magnums used sierra cosworth rear diff??

Any way for a nice high tensile fastener what want is something like Unbrako cap head bolts (if you can get them in ok, or failing that bolts as opposed to set screws (a true bolt has a plain portion under the head then thread, a set screw is a 'bolt' that is threaded right under the head).
Or you could dowel the flanges together and use set screws. The plain portion of the bolt should be as snug a fit as possible in the holeto stop back and forth creep of the flanges under heavy acceleration/deceleration.

Hope this is some help and apologies in advance if this is teaching granny to suck eggs
Cheers Steve,

I think I see what you mean, is there an easy way of measuring the internal diameter for the dowel part of the flange ~ I tried using a vernier caliper, but felt the results were 'wooly' at best. The bolt I have is fully threaded (bar approx. 1.5mm from the head)

Thanks

Nick.

Nick S
03-03-08, 07:12 AM
Nick - different arrangement to any jag diff I have seen - the flanges usually just have plain holes.

In your case, I would make damm sure they are best quality high tensile bolts, use threadlocker having degreased bolts and threaded holes, and pull up to around the same torque setting as I mentioned before.

Still puzzled tho' as to why yours is different. Any pics?

Wilf,

Pictures as discussed, I feel David Bailey can sleep well tonight.

If I don't manage to attach these to this post, can I email them to your work.

Thanks

Nick.

FatBoy
03-03-08, 07:38 AM
Any idea where I can these top quality bolts Wilf mentioned.

Cheers

Nick.


Nick,

XK Engineering are probably the nearest place to you. They are in Bulkington, just outside Nuneaton and they will have the correct bolts for whatever configuration your diff. is, assuming it is a Jag diff. of course.

XK Engineering - Automotive Specialist in Jaguar Automobiles, Parts and Spares, Paint Finishes, E Type, Powder Coating, Racing, Classic Restoration, based in Coventry (http://www.xkengineering.com/)

Paul

Ahh..just seen the pictures. I don't think that is a Jag diff. It certainly doesn't look like any Jag diff. I've seen before.

dave
03-03-08, 08:06 AM
Ahh..just seen the pictures. I don't think that is a Jag diff. It certainly doesn't look like any Jag diff. I've seen before.


Nah, Sierra/Granada.;)

Nick S
03-03-08, 08:10 AM
Nah, Sierra/Granada.;)

Hi Dave,

I am always reluctant to pick your brains as I feel like I am taking bread off your plate, however here goes. I have to change the outer CV gator (its got a slight split in and was going to do the inner as well) would it be a safe bet that the gators are ford as well)

Cheers Nick.

Nick S
03-03-08, 08:12 AM
Nick,

XK Engineering are probably the nearest place to you. They are in Bulkington, just outside Nuneaton and they will have the correct bolts for whatever configuration your diff. is, assuming it is a Jag diff. of course.

XK Engineering - Automotive Specialist in Jaguar Automobiles, Parts and Spares, Paint Finishes, E Type, Powder Coating, Racing, Classic Restoration, based in Coventry (http://www.xkengineering.com/)

Paul

Ahh..just seen the pictures. I don't think that is a Jag diff. It certainly doesn't look like any Jag diff. I've seen before.

Hi Paul,

Thanks for your help anyway, did you get my half cocked message about Lemans?

Nick.

dave
03-03-08, 09:39 AM
Hi Nick.
Almost certainly Ford CV joints and gaiters, too expensive and too much hassle to change to something else when there's nothing to be gained by doing it.;)

Nick S
03-03-08, 09:44 AM
Hi Nick.
Almost certainly Ford CV joints and gaiters, too expensive and too much hassle to change to something else when there's nothing to be gained by doing it.;)

Cheers Dave,

I am going to hopefully take them off this week, get them identified and replaced. Any other points I should be mindfull of whilst carrying out this task?

Regards

Nick.