pzs Posted August 11, 2013 Share Posted August 11, 2013 Why does a 2wd rear shock absorbers add extra suspension lift? Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 11, 2013 Share Posted August 11, 2013 Not "Exactly" a Lift, but More Travel for the Coil Springs. The answer is that the Base for the Coil Spring is Welded to the Shock Absorber's body, Two (2") inches Lower than the 4WD ones. Mo' info, ~► Here. Kind Regards. 1 Quote Link to comment Share on other sites More sharing options...
Gloyale Posted August 12, 2013 Share Posted August 12, 2013 Not "Exactly" a Lift, but More Travel for the Coil Springs. The answer is that the Base for the Coil Spring is Welded to the Shock Absorber's body, Two (2") inches Lower than the 4WD ones. Mo' info, ~► Here. Kind Regards. That's not exactly right either. The spring perch on the strut is higher on the body of the strut in the 2wd ones. The 2wd strut mounts lower on the Trailing arm.....right behind the spindle. The 4wd strut mount is higher, and the axle goes underneath the mount. There is a longer distance between the shockmount on the arm on 2wd ones vs. 4wd The 4wd shock is shorter because it's stuffed into a shorter space, above the axle. 1 Quote Link to comment Share on other sites More sharing options...
AKghandi Posted August 12, 2013 Share Posted August 12, 2013 this old debate.. some one needs to find a factory 2wd and compare it to a 4wd. i've seen a hundred threads on this with no definitive answer... i bought 2wd rear gyb gr-2s and noticed no real difference. Quote Link to comment Share on other sites More sharing options...
Gloyale Posted August 12, 2013 Share Posted August 12, 2013 The definative answer is in the FSM, and it's been documented here before. You can see the difference a tthe KYBoutlet.com here's the pagehttp://www.justsuspension.com/kyb?year=22&make=1504&model=10299&__utma=241047065.1589668293.1374249824.1374249824.1376272759.2&__utmb=241047065.2.10.1376272759&__utmc=241047065&__utmx=-&__utmz=241047065.1374249824.1.1.utmgclid=CPjDrcP3u7gCFSNyQgodjQIAoQ|utmccn=%28not%20set%29|utmcmd=%28not%20set%29&__utmv=-&__utmk=156054968 You can see the 2wd rear, 3410216(wagon) 341063(sedan) ones are longer from bottom of strut to spring seat. Of these 2, the Sedan ones to be a bit longer above the perch, and overall, yeilding the most travel by 1/2" or so. The 4wd ones (341063), are shorter in these dimensions. Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 12, 2013 Share Posted August 12, 2013 (edited) ... ones are longer from bottom of strut to spring seat. ... Yes, because the Base Plate for the Coil Spring, is Welded at different altitude on the Body of the 2WD and 4WD Shock Absorbers, but the Shock Absorber's Body is equal. Years ago, I had both (the 2WD and the 4WD Shock Absorbers) at the same time, in my Hands, brand new at the Local Subaru Dealer, one next to the Other; the only noticeable difference (Beside the part Number) is the two ( 2" ) inches in the Welding spot for the Coil Spring's Base Plate on them; the 4WD had it 2" Higher than the 2WD one and that's it. I noticed that using 4WD struts added somehow a Lift on the Rear of my 2WD Subaru. I Believe that since beside the Base plate placement, both Shocks were identical; Subaru switched from selling both, to Sell as Replacement part, the "Universal" Shock absorber, which has three spots to manually place the Base Plate on the Strut Body; the Higher one corresponded to the 4WD Shock's Placement, the Lower one to the 2WD Shock's placement... there are two ( 2" ) inches between the Taller and the Lower spot. I'm not sure the purposes of the Middle placement, it could be for the XT? ... or maybe to compensate (Somehow) Worn springs? ... The Total damper Travel was 160 mm on Both. Photos of those Rear Shock absorbers, including the "Universal" one, are on the Thread whose Link I posted above... ► Edit: I don't know how much time Photobucket will need to reset their monthly Bandwidth usage back to zero, so the Photos could be viewable again, but if you take the URL from each image, it could be seen pasting it directly on the Browser... In Example, this is the URL of the "Universal" Shock absorber ~► Here Kind Regards. Edited August 12, 2013 by Loyale 2.7 Turbo 1 Quote Link to comment Share on other sites More sharing options...
Gloyale Posted August 12, 2013 Share Posted August 12, 2013 The adjustables or "universals" you call them were stock for 85,86 cars, and discontinued after that. And again, you are wrong man. I'm sorry i know you are a super knowledable subie guy and respected member, but I want to be clear...the spring perch is taller on a 2wd. Further UP the strut, holding the car up higher off the suspension. SPEAKING STRICTLY ABOUT THE REAR If you put 2wd struts on a 4wd it will lift it. If you put 4wd struts on a 2wd it will lower it. Front struts are opposite......4wd front struts are taller. Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 12, 2013 Share Posted August 12, 2013 (edited) Well, Thank you for your Kind Words about me. About this: ...the spring perch is taller on a 2wd. Further UP the strut, holding the car up higher off the suspension... Basically, you're sayin' that I have the Information Backwards ... ... Well, I saw the Shock Absorbers on the Honduran Subaru Dealer, so they're LADM (Latin American Domestic Market) So, Very Respectfully let me tell you that: or maybe I am Wrong, or maybe You're Wrong, or maybe the LADM Specs got them Backwards, Because the Local Subaru Dealer used to Sell the ones with Higher Base Plate for the 4X4 models, Kind Regards. ► Edited to add the pictures, because Photobucket isn't displaying my images Please Notice the Different Position for the Coil Spring's Base plate in these: Edited August 15, 2013 by Loyale 2.7 Turbo 2 Quote Link to comment Share on other sites More sharing options...
-tombba- Posted August 12, 2013 Share Posted August 12, 2013 I will take a photo of the differences between 2wd and 4wd struts when I'll do the swap. I believe I have original 2wd struts in my 3 door coupe and original 4wd struts in my stationwagon. So Maybe I'll post some pictures later of them. Quote Link to comment Share on other sites More sharing options...
ruparts Posted August 12, 2013 Share Posted August 12, 2013 The adjustables or "universals" you call them were stock for 85,86 cars, and discontinued after that. And again, you are wrong man. I'm sorry i know you are a super knowledable subie guy and respected member, but I want to be clear...the spring perch is taller on a 2wd. Further UP the strut, holding the car up higher off the suspension. SPEAKING STRICTLY ABOUT THE REAR If you put 2wd struts on a 4wd it will lift it. If you put 4wd struts on a 2wd it will lower it. Front struts are opposite......4wd front struts are taller. + 1 on this info , he is correct here Quote Link to comment Share on other sites More sharing options...
TallonX Posted August 12, 2013 Share Posted August 12, 2013 (edited) Backwards because technically speaking a higher perch would compensate for a lower mount. Thas just my 2 cents Edited August 12, 2013 by TallonX Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 12, 2013 Share Posted August 12, 2013 Maybe I'm Lost in Translation here... When I Wrote about the Lower or the Higher Base Plate for the Coil Spring at the Shock Absorber's Body, I meant that the Local Subaru Dealer used to Sell the Higher ones for the 4X4 models, and the Lower ones for the 2WD (FWD) models. Kind Regards. Quote Link to comment Share on other sites More sharing options...
TallonX Posted August 12, 2013 Share Posted August 12, 2013 They have it the wrong way around, 4wd would be a lower "plate" for the higher mounting on the arm and 2wd "plate" would be higher because of the lower mounting on the arm Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 15, 2013 Share Posted August 15, 2013 O.K. ... if I had the info Backwards, I will Fix my Writeup and posts about Rear Suspension's Shock Absorbers on EA82's, I'm So sorry about that, but Somehow I'll Like to see Photos from other Members, like this: I will take a photo of the differences between 2wd and 4wd struts when I'll do the swap... Kind Regards. 1 Quote Link to comment Share on other sites More sharing options...
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