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tips, technology, tools and techniques related to vehicle driveline components

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BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: November 28, 2020 01:55PM

Trac-Lock and Power-Lok are competitors and the parts are not interchangeable. The Power-Lok is a heavier unit, has twice the number of spiders, uses all steel clutches and has two halves that bolt together with about 8 rather substantial bolts to compress the cone washers. No interchangeable parts.

I've not seen any Power-Lok clutches with 2 ears. That's Trac-Lock stuff.

You might try contacting these guys:

[www.justdifferentials.com]

Jim


soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: November 29, 2020 01:48PM

yeah, its Trac lok parts I need thanks


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: November 29, 2020 04:24PM

Oh, well those are much more common, you should have no problems finding those parts.

Jim


soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: December 01, 2020 07:03AM

Well, Ive finally found a company that can supply me a set of plates & clips @ 108/ $143, the seller has stated that I should use an oil additive that they sell, is this required? One other thing, what would you recommend re; oil+ additive? thanks



Edited 1 time(s). Last edit at 12/01/2020 07:16AM by soi6.


Spitfire 350
Phil McConnell
Perrysburg, OH (Toledo area)
(207 posts)

Registered:
01/11/2010 09:19PM

Main British Car:
74 Spitfire 350Chevy

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: Spitfire 350
Date: December 01, 2020 08:34AM

I use synthetic 75w90 and limited slip additive in my 44. Amsoil or Royal Purple are both good in my opinion.


MGBV8
Carl Floyd
Kingsport, TN
(4041 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: MGBV8
Date: December 01, 2020 11:59AM

For a posi, yes. I used to use the GM additive.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: December 01, 2020 11:59AM

The oil additive is to protect the posi clutches and yes, it is required, although many axle gear greases already include them, and there is some argument that synthetic gear greases don't need them. Cost should be in the $5-15 range for about a 4oz bottle. Available anywhere, even car dealerships.

Jim



soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: December 01, 2020 01:05PM

Thats for all the help on this, the supplier of the plates sells additive @ $18 so Ill buy that too.


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1131 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: ex-tyke
Date: December 02, 2020 08:46AM

Quote:
I should use an oil additive that they sell, is this required
Any wet clutch system has to use a friction modifier so that the plates won't stick together. eg. Wet clutches in motorcycles also have to have a friction modifier - my Yamaha, for instance, uses their formula "Yamalube" oil.
$18....wow, a bottle of Ford XL-3 friction modifier in Canada is about 5 - 6 bucks.
Ford friction modifier.JPG



Edited 1 time(s). Last edit at 12/02/2020 09:38AM by ex-tyke.


MGBV8
Carl Floyd
Kingsport, TN
(4041 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: MGBV8
Date: December 02, 2020 11:44AM

Graham is the engineer here, not me. While posi clutches need to be able to slip when the car is turning, a wet motorcycle clutch is not quite the same. Don't want that clutch to slip when under power.

I have owned motorcycles since 1973. I have never used a motorcycle oil. Motorcycle spec oil has only been around 20 years or so. Wet clutches (motorcycles) do not need special oil. Just do not use any "Energy Conserving" motor oil that may cause clutch slippage.

I find that Rotella T4 (conventional), T5 (blended), or T6 (fully synthetic), all MA/MA2, rated in 15W40 gets it done for most of my bikes.



Edited 1 time(s). Last edit at 12/02/2020 02:01PM by MGBV8.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: December 02, 2020 12:04PM

It doesn't have to be the high dollar stuff to do the job. Ford has used many trac-lock posi units, their additive is fine.

Jim


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1131 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: ex-tyke
Date: December 02, 2020 03:24PM

Quote:
....I have owned motorcycles since 1973. I have never used a motorcycle oil.
Standard motor oil has never worked in the any of my Yamahas without the clutch packs sticking together .....maybe that Tennessee snake oil has some secret ingredient.


kstevusa
kelly stevenson
Southern Middle Tennessee
(948 posts)

Registered:
10/25/2007 09:37AM

Main British Car:
2003 Jaguar XK8 Coupe 4.2L DOHC/ VVT / 6sp. AT

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: kstevusa
Date: December 02, 2020 04:19PM

Back in Muscle Car era, the LSD,TracLoc, Sure Grip or Posi required the Special additive to allow the clutches to slip and not try to lock during turning corners. Ford, GM, Chrysler and AMC had their own name for the additive, but all did the same function. Originally; GM used whale oil as their lube. Unsure what others used. EPA changed that and few other things.
Factory Service bulletins noted: Add the special oil when customer complained of noisy (popping) rear end when turning. Once added, you went to parking lot and made circles both directions to mix the lube and lubricate the clutch packs. Usually problem was solved. Ford additive came in 4 fl.oz, and smelled BAD! None of had a pleasant smell. My story and I'M sticking ti it. :-)


MGBV8
Carl Floyd
Kingsport, TN
(4041 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: MGBV8
Date: December 02, 2020 04:57PM

Quote:
Standard motor oil has never worked in the any of my Yamahas without the clutch packs sticking together

Must be that darn cold weather. Or, you aren't riding hard enough. ;)

Trail riding, street riding, motox & drag racing, I have never had any issues with motorcycle clutches.


soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: December 06, 2020 07:52PM

For people living in the states be greatfull for the cost of parts, the plates & additive has cost me $174.50.....you lot are spoilt!



88v8
Ivor Duarte
Gloucestershire UK
(837 posts)

Registered:
02/11/2010 04:29AM

Main British Car:
1974 Land Rover Lightweight V8

Re: Jag IRS, Dana Unit Questions?
Posted by: 88v8
Date: December 07, 2020 04:21AM

A bit late as I haven't been following this, but do Hauser supply these parts?
[www.hauserracing.com] They specialise in axle builds.

Do agree about the shipping and import duty, self-inflicted in my case as I chose to run an American car.

Ivor


soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: December 09, 2020 07:29PM

Yeah i got the parts from them, I must say it was a PITA to get the plates into the carrier, not a job for some one that does not have some ability. But its looking good, & Im pleased with the outcome, thanks every one for your help!


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: December 10, 2020 11:34AM

Yeah, one of the down sides of the trac-lock. But they do a fair job once set up... until the plates wear. The first 10K miles will be good though.

Jim


soi6
Tim east

(61 posts)

Registered:
06/24/2018 06:40PM

Main British Car:


Re: Jag IRS, Dana Unit Questions?
Posted by: soi6
Date: December 10, 2020 05:20PM

Is that 10k of hard use or moderate use?


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6008 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Jag IRS, Dana Unit Questions?
Posted by: BlownMGB-V8
Date: December 11, 2020 09:12AM

I think I'd have to say moderate but YMMV. With the weight of the MG you could get much more out of it. It is however a steadily decreasing effect and at some point the clutches will need replaced. The thing is, wear will occur even if you never spin a tire.

Jim
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