KYB lower mount bushing?
Thread Starter
Heel & Toe
Joined: Jan 2022
Posts: 15
Likes: 3
KYB lower mount bushing?
Hi all, first post here.
My apologies if this has been asked before. I tried searching for a little while but didn’t see anything.
In Richard Newton’s 101 Projects for Your Corvette, he recommends using polyurethane bushings for the lower shock mounts in the rear. I purchased KYB shocks, model KG5571. The eyelet at the bottom where the mounting bolt goes through, is that a bushing? If so, is it removable/replaceable? If so, do you know what part number (from Prothane, Energy Suspension, etc) would replace it?
The question arose because I think Newton was using either TPIS or Bilstein shocks during the replacement steps he outlined, and KYB stated in their item description on RockAuto for the shock I bought, “Solid, seamless mounting eye rings and bolt bushings that can't separate and become noisy” and “Chemically bonded insulator mounting bushings that won't slip out”. So, with those two things in mind, I wasn’t sure if it is in fact possible with KYBs to put polyurethane bushings in the lower mount location.
If anyone has any experience with this, your knowledge would be much appreciated.
Very respectfully,
My apologies if this has been asked before. I tried searching for a little while but didn’t see anything.
In Richard Newton’s 101 Projects for Your Corvette, he recommends using polyurethane bushings for the lower shock mounts in the rear. I purchased KYB shocks, model KG5571. The eyelet at the bottom where the mounting bolt goes through, is that a bushing? If so, is it removable/replaceable? If so, do you know what part number (from Prothane, Energy Suspension, etc) would replace it?
The question arose because I think Newton was using either TPIS or Bilstein shocks during the replacement steps he outlined, and KYB stated in their item description on RockAuto for the shock I bought, “Solid, seamless mounting eye rings and bolt bushings that can't separate and become noisy” and “Chemically bonded insulator mounting bushings that won't slip out”. So, with those two things in mind, I wasn’t sure if it is in fact possible with KYBs to put polyurethane bushings in the lower mount location.
If anyone has any experience with this, your knowledge would be much appreciated.
Very respectfully,
Melting Slicks
Joined: Jan 2014
Posts: 2,192
Likes: 381
From: Lunenburg MA
As far as I know, they are not removable and no one sells urethane replacements. They are so small I doubt it would make any difference in handling even if you changed them. Sometimes it's just about selling a book.
Drifting
Joined: Nov 2015
Posts: 1,716
Likes: 332
Finalist 2020 C4 of the Year - Unmodified
Richard was referring to the bushings in the suspension links, not the shocks. Point was to be more "firm" than most of today's typical replacements. They are much softer than the original rubber bushings.
Shocks don't take anywhere as much load as the suspension links.
Shocks don't take anywhere as much load as the suspension links.
Thread Starter
Heel & Toe
Joined: Jan 2022
Posts: 15
Likes: 3
I see what you’re saying. Energy Suspension does have universal shock bushings though, so I wasn’t sure if maybe he used a set of those.
Thread Starter
Heel & Toe
Joined: Jan 2022
Posts: 15
Likes: 3
matter of pressing the bushing out and then installing the polyurethane in its place.” Do you still think he’s referring to the suspension link bushings?
Drifting
Joined: Nov 2015
Posts: 1,716
Likes: 332
Finalist 2020 C4 of the Year - Unmodified
Huh, guess I should have got out his book and checked it. Yeah, I bought a one!!
He also talks about the rest of the bushings, he switched to Delrin (Delwrin? The hard plastic ones) for racing, wanting precise alignment, etc. Pretty sure he referred to the Energy Suspension bushings as "junk".
Time for re-read!
He also talks about the rest of the bushings, he switched to Delrin (Delwrin? The hard plastic ones) for racing, wanting precise alignment, etc. Pretty sure he referred to the Energy Suspension bushings as "junk".
Time for re-read!
