Setup: I have kyb agxes set on stiffest setting, with neuspeed sports, spc ball joints, strut tower bars (front and rear), and an m2b4 LSD. Put on and aligned 5 weeks ago.
Problem: Recently, when I take a left hander at a good clip there is a bad shudder (more than a vibration) from the right side of the car (my wife thought it was the front). You can feel it shake… It takes left hand turns as normal and even when I get the rear breaking loose just a bit to encourage a little oversteer, the car feels stable. I don’t think it is a wheel bearing or the drive axle, but I wondered if you all had any ideas? I launched the car at about 3K and the LSD grabbed beautifully, and I hear no noise other than the shudder.
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'92 SI > JDM H22A/LSD swap, 2 row AL radiator, custom intake and 2.5" exhaust, ceramic 421 header, high-flow cat, titanium muffler, stg1 clutch, sport suspension w/ camber kit and F/R strut tower bars, eCtuned ECU
Had one of three bolts missing on the torsion arm on right front. Shudder seems less pronounced now and seems to be a problem with the rear. I guess the wheel might be skidding and bouncing a little, but I don't understand why it doesn't do it when turning both ways, only to the left.
I have my agxes on the stiffest setting... should I try just softening up the back a bit??? (I'd have to do the front also, don't want to mess up the balance I have now)
Any other ideas?
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'92 SI > JDM H22A/LSD swap, 2 row AL radiator, custom intake and 2.5" exhaust, ceramic 421 header, high-flow cat, titanium muffler, stg1 clutch, sport suspension w/ camber kit and F/R strut tower bars, eCtuned ECU
Is there any play in the steering linkage or the hubs? I would get under the car and push hard on the suspension and steering linkages and see if anything moves around. If so, something's broken.
I would look at the axle again, but it seems to be the rear that is the problem at this point...
sway bar seems snug, rear suspension looks good.. bearings are good... ball joints are new...
the weird thing to me is that the problem developed a couple weeks after I got the car back from the engine/tranny/suspension swap... it was not like this when I got it back and my shop can't find a problem they can fix..
Ken, they tugged, pulled, and fought with it on the rack and nothing seemed loose to them... they work almost exclusively on hondas and acuras, so if they are stumped I don't stand much of a chance of figuring it out. I've tried softening up the rear struts, they are now on the softest setting but the problem remains (seems not to occur as quickly with softer setup)
I'm all outta ideas....
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'92 SI > JDM H22A/LSD swap, 2 row AL radiator, custom intake and 2.5" exhaust, ceramic 421 header, high-flow cat, titanium muffler, stg1 clutch, sport suspension w/ camber kit and F/R strut tower bars, eCtuned ECU
I am afraid maybe it is the bushings. My shop didn't replace them when they did my swap (I told them they could if they needed it, or thought it was a good idea)... If I don't find something out soon I suppose that is the next logical step.
any suggestions on bushings to buy??
other ideas on the problem?
Blamo, thanks for the suggestion, but what it "tophat"? (one of those things Lincoln wore?)
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'92 SI > JDM H22A/LSD swap, 2 row AL radiator, custom intake and 2.5" exhaust, ceramic 421 header, high-flow cat, titanium muffler, stg1 clutch, sport suspension w/ camber kit and F/R strut tower bars, eCtuned ECU
One thing to keep in mind about bushings is that polyurethane bushings have a very finite lifespan. I've never run them myself, but racers who do tell me anywhere from 10k - 30k miles. You can keep them going by periodically re-greasing them. Just FYI if you plan to go that route.
I'm getting the kind with graphite lubricant in the material, but I will be sure to keep them greased.
I ordered a master kit, but I still need to order the trailing arm and sway bar/ end link bushings.
If I replace my sway bar bushings I plan on keeping my stock rear sway bar; with my strut tower bars and lowered chasis, will I have problems with wheel lift or should it be fine?? I don't have understeer issues so I am not sure I want to spend the money on a sway bar.
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'92 SI > JDM H22A/LSD swap, 2 row AL radiator, custom intake and 2.5" exhaust, ceramic 421 header, high-flow cat, titanium muffler, stg1 clutch, sport suspension w/ camber kit and F/R strut tower bars, eCtuned ECU
If you are happy with the current handling, by all means keep the rear sway. Wheel lift only happens when the spring rate is too high, which would be more likely with a stiffer rear sway (not less).
What I meant by the tophat is the very top of the strut. My brother had a bushing eat up at the top of his strut on his 4g, and it made a clunking noise.
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