New KYB struts - What is the Bushing for?
#1
New KYB struts - What is the Bushing for?
I am looking at my brand new KYB struts and was just about to install them, and under the top nut on each is a bushing of sorts that is approximately 1/2" thick. I have replaced many struts and never seen these before. Anyone know what they are for? Do they get installed with the strut? On top - just under the nut? Below the top plate?
#3
The piece I am talking about is a steel bushing, it can't possibly fit anywhere but on the threaded section of the strut shaft. The inside diameter is a clearance hole for the threaded end of the strut shaft. The outside diameter appears to be the same as the O.D. of the shaft. Both the new left and right handed struts were supplied with them.
If the bushing was under the top plate, it would appear it could only be used to change the pre-load of the coil spring. In this manner it would allow more length for the spring and the front of the car would sit lower.
If the bushing was above the top plate, it would serve no purpose at all and could simply be left off.
Any Ideas here?
#7
Going from my old man's memory here.
Seems like that spacer/bushing is to keep the top nut from bottoming on the plate OR, to keep the plate tight and level so the spring doesn't cause it to lean to the side, so to speak.
Been a while since I had mine apart so I could be wrong.
Seems like that spacer/bushing is to keep the top nut from bottoming on the plate OR, to keep the plate tight and level so the spring doesn't cause it to lean to the side, so to speak.
Been a while since I had mine apart so I could be wrong.
#9
Okay, I sent a e-mail to KYB technical support and they said it was because they used to send a new nut with the struts that did not have the flange like the OEM nut, but if you use the KYB top plate, you did not need the 7/16" thick washer, spacer, or bushing, or whatever you want to call it.
Well, I changed out the struts, backed out of the garage, and as soon as the front tires drove off the garage floor and onto the driveway, I heard a distintive clunk from both sides of the car.
I drove it right back inside, lifted the hood, placed a finger on the top of one strut top nut and bounced the car. Sure enough the strut was loose to the top plate. The nuts were tight, but the joint was loose.
Answer: The struts did not have enough threads to allow the nuts to even come close to a tight joint with the top plates.
I left the struts in the car, wrenched the nuts off, installed the 7/16" spacers and now the noise is gone. Yee-Ha!
But now that the struts are quiet, I can hear the noisy front axle shafts. I picked up re-manufactured axles tonight and ordered the timing chain tensioner.
Well, I changed out the struts, backed out of the garage, and as soon as the front tires drove off the garage floor and onto the driveway, I heard a distintive clunk from both sides of the car.
I drove it right back inside, lifted the hood, placed a finger on the top of one strut top nut and bounced the car. Sure enough the strut was loose to the top plate. The nuts were tight, but the joint was loose.
Answer: The struts did not have enough threads to allow the nuts to even come close to a tight joint with the top plates.
I left the struts in the car, wrenched the nuts off, installed the 7/16" spacers and now the noise is gone. Yee-Ha!
But now that the struts are quiet, I can hear the noisy front axle shafts. I picked up re-manufactured axles tonight and ordered the timing chain tensioner.