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Old 01-29-2006, 12:16 PM   #1
Dizmal
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Default JDM STi pinks on a bugeyes. What is needed to make them work?

Basically what the title says.

I have an 02 WRX, I have the chance to get JDM STi pinks for a good price. But, what will I need for them to work on my REX? I'm not just looking to swap out the springs. I heard I may need to buy STi tophats also? True?

I will wait on the install untill I get some good struts. Any recommendation on what kind I should get? I was thinking of KYB AGX struts. I read in the other thread that STi struts are inverted. Do I need those? Or are the AGX struts good for this application?
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Old 01-29-2006, 01:06 PM   #2
DrBiggly
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Really I'd recommend getting some STi strut takeoffs (you definitely want the version 8 struts, not version 7 struts, better valving on the V8s) to match the springs up properly. Or you could do Koni inserts on the struts you have now; that would offer great valving and a bit of adjustability. AGXs might not hold up to the Pinks (unsure of their springrate rating) and definitely would have the worst ride quality of the three (Koni, AGX, STi v8.)

As for the inverted thing, it's just a design feature not a requirement for special springs; they still act like struts.

-Biggly
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Old 01-29-2006, 01:49 PM   #3
Dizmal
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Where can I find the STi strut take offs?

But other than just new struts, I should be golden on this install? No other fitment issues?
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Old 01-29-2006, 02:54 PM   #4
UkNuck
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If by "the JDM STi pinks" you mean the current (2004-on) ones, then since you have an 02 yes there are other fitment issues - in particular the rear tophats will have to be changed - and the new style tophats do not mate 100% with the 02/03 struts, so stepping up to version 8 takeoffs or Koni 2004+ inserts makes more sense fitment wise than sticking with an 02/03 style strut such as the AGX.

You may have heard people recommend that you buy Group-N tophats (which are stiffer, and a generally regarded as a worthwhile upgrade - the regular STi ones are no different that other Imprezas AFAIK). Regardless of whether you do that or not, the rear tophats must match the style/version of the rear springs - either 02/03 (version 7) or 04+ (version 8).
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Old 01-29-2006, 10:07 PM   #5
Blue5spdWRXWgn
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Before I put later style springs and top mounts on early struts, I took many measurements and established that the spring and jounce bumper would be correctly positioned. The conversion works well provided you do the following:

1. Drill out the ID of the new mounts slightly, as the strut rod tennon (the threaded rod at the top of the strut) has a slightly larger shoulder diameter on the early struts.

2. Make some metal spacers, approximately one centimeter in height and place the spacers on the rod AFTER putting on the mount to make up for the shorter mount innner metal on the later mounts.

3. The early jounce bumper will work on the later mount and the spring seat insulator is not needed since the later style mount has a rubber spring seat.

4. Rather than cupping the dust boot over the top of the jounce bumper, it can trimmed and pulled over the end of the jounce cup so that the first boot convolute fits on the flared end of the jounce cup. In order to do this, a small amout of rubber that was meant to go over the top of jounce bumper needs to be trimmed off with a scissor.

Finallly, would you all please stop saying "tophat", it sounds silly. The part is called a strut top mount or an upper strut mount or just a mount.
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