XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

700R4 Quarterbreed Transmission Question

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Old 02-07-2015, 09:01 AM
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Default 700R4 Quarterbreed Transmission Question

I am thinking of using the adapter kit from Jaguar conversions, swaps, parts, service and advice - from John's Cars in Dallas. and installing a GM 700R4 4 speed auto transmission. I currently have the car in a shop that specializes in jags and even more so in XJS'. He said he's done a few before and likes them for the most part. The only negative was there is a tight clearance issue with the starter. I was wondering if anybody here has done this and knows about the starter issue, or any work around for it.
 
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Old 02-13-2015, 04:35 PM
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the only negative is if you have to change your starter...

If you are doing this you might look at your budget for this project and see if you have enough to also replace the starter at this time with a new gear reduction starter with the best warranty you can find... then it will not be an issue, unless some bad happens to the starter...

Let us know how this goes, with lots of pictures....
 

Last edited by Jonathan-W; 02-13-2015 at 04:39 PM.
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Old 02-13-2015, 06:31 PM
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Tight clearance....making future replacements difficult? Is that the concern?

Changing the starter on a Jag V12 is a royal PITA so I'm hard pressed to see how the starter situation would be any worse than what you already have.

Cheers
DD
 
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Old 02-13-2015, 07:49 PM
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What is the benefit of a gear reduction starter in this application? I love the sound the stock XJS starter makes. (yet)Another of my favorite features of this car. I would know an XJS starting up in my sleep.
 
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Old 02-13-2015, 09:13 PM
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Yes, tight starter clearance is my main concern, making future work even tougher. Would there be any reason to think that a good new starter wouldn't be as reliable as the original in this circumstance?

I also love the sound of the factory one too, hate to see that go. But it would be with it for 4 gears I think.
 
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Old 02-14-2015, 10:17 AM
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Originally Posted by Flint Ironstag
What is the benefit of a gear reduction starter in this application? I love the sound the stock XJS starter makes. (yet)Another of my favorite features of this car. I would know an XJS starting up in my sleep.


then replace the starter with a stock one with a lifetime warranty


I'm just saying while you have it all out... put the best back in you can...
 
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Old 02-15-2015, 07:59 AM
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The only advantage of using a good grade GR over a stock Jaguar unit in good shape is the weight to be hoisted and held in a most uncomfortable [position and seeking to align and start the fasteners.


Been there in my different car. Only redeeming features was the relatively light weight unit to be replaced with another of similar architecture.


Done, but, now I have control issues in the electrics. another story, another time, another place....


In the course of my diagnostics, I opened the factory manual disc to research Jaguar ignition switches. Disappointment to the nth power.


Carl
 
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Old 02-20-2015, 06:32 PM
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i kinda like my gear reduction starter, more so after a women said it sounds like a P-51 airplane starting up, that odd gear whine!

also i have no problem with space, my XJS is RHD(right hand drive).
 
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Old 02-20-2015, 09:34 PM
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Ronbros, how about a sound clip?
 
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Old 02-21-2015, 02:58 PM
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Flint how would i go about doing that sound thing?
 
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Old 02-23-2015, 06:53 AM
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If you've been around for a spell, MOPAR starters had their own distinctive sound.


They used GR units early on.


Carl
 
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Old 02-23-2015, 03:19 PM
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Ronbros, I honestly don't know how well todays phones would handle recording a loud exhaust, but I'd probably start there. Usually in the camera app there's an option to record video.
 
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Old 04-21-2015, 02:08 PM
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The start up sound of the XJS is a sound thats send shivers up my spine. The rule in our house is passengers have to be quiet when starting. Looove that sound, its like pushing the button on your very own rocketship!
 
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Old 04-22-2015, 04:04 PM
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@Dave1109971, agreed!!
I have the same routine, with my xj12 and xjs. nothing sounds like those.
 
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