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View Poll Results: IRS on a 1600lb FFR?
Yes... IRS baby! 11 84.62%
No way... solid axle man. 1 7.69%
IRS? Meh... screw taxes. 1 7.69%
Voters: 13. You may not vote on this poll

Kirkham Motorsports

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Old 08-01-2009, 08:43 PM
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Think about a 3 link upgrade along with the new style Koni shocks. If you want to retrofit in an IRS, expect some major fabrication and re-engineering of the rear substructure in order to properly mount it. Not saying it can be done, as it has been in the past, just saying it may not be worth the effort.


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Old 08-01-2009, 08:44 PM
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Quote:
Originally Posted by mrmustang View Post
Think about a 3 link upgrade along with the new style Koni shocks. If you want to retrofit in an IRS, expect some major fabrication and re-engineering of the rear substructure in order to properly mount it. Not saying it can be done, as it has been in the past, just saying it may not be worth the effort.


Bill S.
Exactly the kind of advice I was looking for.

Thanks so much!

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Old 08-03-2009, 10:24 AM
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IRS would improve ride quality from most people's perspective, I have a solid axle w/ 3-link, but have ridden in an IRS FFR before, good ride quality. The 3-link seems to be a better ride quality that the 4-link, which I have also ridden in. If I had to do it again, I would have gone with the Gordon Levy 5-link. This also depends on the horsepower/torque of the engine. Huge HP may require upgrading the components of an IRS suspension system, etc.

As for power steering, I have manual, but it is a flaming river rack and not a de-powered donor rack. If adding power steering, consider incorporating a Heidts valve as many have stated the powered rack is way to sensitive/touchy when stock. This valve reduces the power steering pump pressure.
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irs, ride quality, shocks, spacers, suspension


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