'91 SS with KYB AGX--parts list

kleinkid · Post by **kleinkid** » Sun Oct 30, 2005 7:31 am

Completed OEM strut and spring changeout and installed AGX's with Whiteline "Control" springs. The rear strut top mounts, rear spring seats(perch) and the rear upper rubber seats needed to be replaced for the conversion, the other rubber parts were replaced because they were damaged. KYB AGX struts 734006(RF),734007(LF), 733010(RR), 733011(LR), www.performancepartsstore.com, $374.99. Whiteline Control springs, 70198(F), 70369(R), www.pdm-racing.com, $240.00. STi group N rear strut top mounts, ST20370AA240, www.rallispec.com, $110/pr. The following parts were sourced from www.subarugenuineparts.com,(thanks Jamie)--Rear spring seat(perch), 20373AA200, $36.64/pr. Rear upper rubber seat, 20375AA030, $19.86/pr. Rear lower rubber seat, 20375AA002, $14.88/pr. Rear helper(rubber bump stop), 20371AA041, $33.80/pr. STi group N front strut top mounts, ST2031055000, $113/pr. The old springs and probably the struts were the original OE, and the struts were very worn out, 178,000 mi. As a result of the new parts, the car is 3/4" lower, feels and handles way better, and I am very happy!

Post by **Legacy777** » Sun Oct 30, 2005 4:55 pm

Good deal.

That's what I have....and it's a very nice handling car.

Splinter · Post by **Splinter** » Sun Oct 30, 2005 8:25 pm

The guys at Rocket Rally advised me against getting the whiteline springs, they recommended H&R, Eibach, Prodrive or STi

wiscon_mark · Post by **wiscon_mark** » Sun Oct 30, 2005 9:51 pm

Prodrive are probably the best if you don't want a seriously low drop, but whiteline are the only ones that have wagon specific springs, so I'll probably go with them when the time comes.

kleinkid · Post by **kleinkid** » Sun Oct 30, 2005 11:09 pm

Everyone has their opinion about springs. Rocket Rally has theirs. Why do they have this opinion, who knows? I used the Whiteline Control springs and lowered 3/4". They do have their Flatout line for some applications, which lowers more than their Control line. 3/4" is well within KYB's tolerance for lowering. I am satisfied with the results and don't expect any problems. H&R, Prodrive, etc. would have been fine probably, also. There are many others who have this combination(AGX/Whiteline) and like it. Cost and personal preference always play a subjective and or objective role in ones buying decisions. As long as you don't get to radical in your decisions, whatever product you choose will work out OK, most likely.

Splinter · Post by **Splinter** » Sun Oct 30, 2005 11:18 pm

Yea the guy didnt go into detail, he just said that he was 'disappointed' by whiteline springs, although he does like their swaybars and bushings

wiscon_mark · Post by **wiscon_mark** » Mon Oct 31, 2005 2:41 am

He probably thought it didn't lower enough

Splinter · Post by **Splinter** » Mon Oct 31, 2005 3:08 am

wiscon_mark wrote:He probably thought it didn't lower enough

THey run rally cars, I dont think they want them lowered

wiscon_mark · Post by **wiscon_mark** » Mon Oct 31, 2005 3:11 am

it was a joke but...yeah, I don't suppose so.

Dr.Outback · Post by **Dr.Outback** » Wed Feb 08, 2006 9:18 pm

Why did you have to replace the rear strut mounts, spring seat, and the upper seat? I didn't when I put my AGX's in. Was it because yours is a 2.2 NA?

kleinkid · Post by **kleinkid** » Thu Feb 09, 2006 2:57 am

I have a '91 Sport Sedan, 5MT, which, of course has the turbo. The 91's have the more tapered top rear springs. The makers of aftermarket springs of that type is limited. I converted to be able to have more choices. I did chose Whiteline springs though, and they also make a spring for the '91 model year. In the future if I want something else I now have more options available.

rallysam · Post by **rallysam** » Thu Feb 09, 2006 3:59 pm

Clarification - he had to mess with the mounts because he changed the springs - not because he put AGX in.

I've put AGX on stock springs in a variety of different types of BC BF, and never had to change anything else like top hats or perches or anything.

Dr.Outback · Post by **Dr.Outback** » Thu Feb 09, 2006 6:48 pm

rallysam wrote:Clarification - he had to mess with the mounts because he changed the springs - not because he put AGX in.

I've put AGX on stock springs in a variety of different types of BC BF, and never had to change anything else like top hats or perches or anything.

Oh...I didn't know that the '91 SS came with the tapered spring. The reason why I asked if it was NA, was because the Whiteline PN's he used fit a newer SS without changing the mounts etc., but an NA would need to be converted.

kleinkid · Post by **kleinkid** » Thu Feb 09, 2006 9:35 pm

That is correct. It was because I did not want to use the '91 style springs that required the other parts. Other than that, I did want to use the STI Group N top mount. It took a lot of searching, research and study to figure out what parts I needed. The compendium of information is a start, but it does not provide crystal clear information that some of us feel we need.

AWD_addict · Post by **AWD_addict** » Sat Feb 11, 2006 12:51 am

So, in the spirit of providing some clear information:
Do the STi Group N top mounts require the specific rear spring seat(perch) and/or rear upper rubber seat that you installed?

A_DuB · Post by **A_DuB** » Sat Feb 11, 2006 1:19 am

It depends on the year. I think I heard that the 05-06 are tapered like ours springs are.

AWD_addict · Post by **AWD_addict** » Sat Feb 11, 2006 2:10 am

How about the ones for Impreza MY93-01?

kleinkid · Post by **kleinkid** » Sat Feb 11, 2006 3:38 am

You are asking me to remember something from a whole four months ago! Just kidding. I have to think about this. I threw away the old parts so can't go look at them. Am pretty sure of this info though. The original equipment rear top mount and and upper spring seats are integral(good word, huh) to each other. That is to say, the top mount and upper seat are one unit (attatched). That is why I used the parts as I listed for the conversion. For the conversion, the top mount is one piece and the upper strut mount(perch) is a separate piece. The top of the Whiteline Control spring is a larger diameter than the '91 OEM spring which required the upper rubber seat as listed, and the upper rubbber seat then nested into the upper spring seat properly. Does that help?

AWD_addict · Post by **AWD_addict** » Sat Feb 11, 2006 10:06 pm

Yes, that does help.
That makes sense according to the suspension diagram, I didn't realize the upper seats and rear top mounts were integral.
Thanks kleinkid!

chochocho · Post by **chochocho** » Fri Mar 21, 2008 6:10 pm

sorry to bring this back from the dead. is the part number for the sti group n rear top hats for a 93-01 impreza? the whiteline control springs you got was not for the 91 specific models?

crap, i got the 93-01 sti group n rear top hats and 91 specific rear legacy springs....

thanks in advance.

kleinkid · Post by **kleinkid** » Sat Mar 22, 2008 6:20 am

Yes, you are correct. I converted and used parts to gain more options in the springs available to use. The Whiteline springs I used are not for the '91 legacy.

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'91 SS with KYB AGX--parts list

'91 SS with KYB AGX--parts list