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11-16-2010, 10:57 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine:
Posts: 13
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Not Ranked
Jag IRS
Hello All, I am currently saving to build a ERA 289fia, I am also keep a watch for parts that I may need. I have come accross a 1987 xj6 IRS, it is still in the car. My question is what should I salvage? I will be going with the ERA design IRS. Also how would I go about determing the gearing and if it has posi, any place to look for markings or numbers? thanks Jerry
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11-16-2010, 12:01 PM
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CC Member
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Join Date: Oct 2006
Location: West Bend,WI,
wi
Cobra Make, Engine: Holliday Motorsport/396 GM / 4 speed / Jag rearend
Posts: 272
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Not Ranked
Give me your email and i can send you a file with info on how to identify jag rears. The diff cover sometimes has a tag at one of the bolts with the ratio on it.
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11-16-2010, 02:00 PM
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CC Member
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Join Date: Nov 1999
Location: White Plains,,
NY
Cobra Make, Engine: ERA140, ERA 267, ERA GT2038, ERA FIA 2045, ERAGT2077 ERA2893000EXP
Posts: 1,117
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Not Ranked
If you are intent upon using the ERA outboard rear, you will need the center section and, I believe, the stub axles.
The 87XJ6 is probably an open rear, ie; non-posi.
My advice is to give ERA a call and talk to Doug.
My practice has been to give them the entire rear, from flange to flange, brakes included, even when I am getting the ERA rear, inasmuch as they can use the other parts in rebuilds of other rears. I would otherwise be throwing the left over bits on the scrap pile at the recycling center.
Jim
Last edited by Jim Holden; 11-16-2010 at 02:46 PM..
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11-16-2010, 02:43 PM
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CC Member
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Join Date: Aug 2010
Location: San Antonio Valley Ca,
ca
Cobra Make, Engine:
Posts: 1,275
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Not Ranked
Quote:
Originally Posted by 67JET
Give me your email and i can send you a file with info on how to identify jag rears. The diff cover sometimes has a tag at one of the bolts with the ratio on it.
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Email/pm sent also.
John |
11-16-2010, 04:01 PM
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CC Member
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Join Date: Oct 2006
Location: West Bend,WI,
wi
Cobra Make, Engine: Holliday Motorsport/396 GM / 4 speed / Jag rearend
Posts: 272
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Not Ranked
redmt- I sent it to you. I also have assembly and dis-assembly info also in the same format.
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11-16-2010, 04:47 PM
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Senior Club Cobra Member
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Join Date: Mar 2000
Location: St. Augustine,
FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,926
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Not Ranked
Jerry et al,
Here's an article about the Jag rear in all its variations that I found very helpful some years back: http://www.firstcoastcobraclub.com/v....php?f=8&t=167
Alas, CWI is no more but the info is still viewable from my web site.
Enjoy,
Tom
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
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11-16-2010, 06:14 PM
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Senior Club Cobra Member
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Join Date: Nov 2003
Cobra Make, Engine: ERA #698 428 Toploader
Posts: 292
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Not Ranked
Are you planning to get the complete rear from E.R.A., if so you need nothing from the used rear. If you are getting the kit there is a small list of what you get and need to supply on their web site under options.
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11-16-2010, 07:18 PM
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CC Member
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Join Date: Aug 2010
Location: San Antonio Valley Ca,
ca
Cobra Make, Engine:
Posts: 1,275
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Not Ranked
Quote:
Originally Posted by 67JET
redmt- I sent it to you. I also have assembly and dis-assembly info also in the same format.
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Fantastic info!! Thanks !! If you have anything else, I be very grateful to have it.
John |
11-16-2010, 07:31 PM
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CC Member
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Join Date: Oct 2006
Location: West Bend,WI,
wi
Cobra Make, Engine: Holliday Motorsport/396 GM / 4 speed / Jag rearend
Posts: 272
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Not Ranked
I will send you more tomorrow when i get to work. I have all my Cobra stuff on my external HD at work.
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11-20-2010, 07:00 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine:
Posts: 13
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Not Ranked
Thanks
Thanks everyone this has been very helpfull, the wealth of information on this forum is amazing
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