Rear Spring isolators, same as cobra IRS? - TCCoA Forums
 
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post #1 of 7 (permalink) Old 05-23-2005, 05:29 PM Thread Starter
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Rear Spring isolators, same as cobra IRS?

Just seen they are now makeing polyurethane spring isolators for the Mustang Cobras with the IRS, Are the springs similar to the thunderbird? as they only want $25 for a set vs. the $50 I've seen for the thunderbird.

Brad M
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post #2 of 7 (permalink) Old 05-24-2005, 10:04 PM
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The lowers on the Cobra IRS springs are the same as the MN-12 uppers & lowers. Our cars use the same insulators top and bottom, the Mustangs are different.

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post #3 of 7 (permalink) Old 05-24-2005, 11:48 PM Thread Starter
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Thanks,, gonna give pro-thane a call tommorow and possibly see if I can get a master list of all the bushings they sell (dimesion wise) and see if I can match em up to things on the Tbird.

To be honest I'm sick of the high prices I'm seeing for simple parts on a Tbird,, and out of all the parts made how come someone doesnt make frame to IRS Subframe bushings?

Brad
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post #4 of 7 (permalink) Old 05-28-2005, 07:33 AM
 
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There's been some discussion on the SCCoA forums about this. This thread in particular starts to get a little into the physics of it (I don't know enough yet to tell whether it's correct or not) but the more I read, I'm starting to think it's really just part of the design of the IRS subframe and it's attatchment points; not necessarily a bushing material issue. Sure it may help, but I really think it's only a bandaid. I was going to try and look at some of the Corvette IRS setups to compare.


My .02 anyway




On a side note, I completely agree with you SplitPortBird. $235 for an IRS Diff brace is laughable. All you need is ~$30, a tape measure, and a welder. I really can't see justification for the insane markup.
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post #5 of 7 (permalink) Old 06-25-2005, 01:32 PM
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Hey, who has the poly insulators? How about a web address or phone # so I can get some. I'm going to change the springs on my bird , and I want to change everything at the same time.
Thanks.
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post #6 of 7 (permalink) Old 06-25-2005, 02:30 PM Thread Starter
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Raybird: checkout my post about the isolators!

http://forums.tccoa.com/showthread.php?t=66361
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post #7 of 7 (permalink) Old 06-26-2005, 01:03 AM
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Thanks, Looked up the site and will call them next week.
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