Bouncy butt
Thread Starter
Melting Slicks
Joined: Nov 2017
Posts: 2,342
Likes: 517
Bouncy butt
Whenever I hit a speed bump like obstacle, when I get off of it, the rear kinda slams down uncomfortably.
I have a 340# composite spring and gas-a-just dampers. My guess is Bilstein HD dampers would solve this ?
MTIADC3
I have a 340# composite spring and gas-a-just dampers. My guess is Bilstein HD dampers would solve this ?
MTIADC3
Melting Slicks
Joined: Oct 2012
Posts: 2,156
Likes: 273
From: Dunedin NZ.
Use the Bilstein sport shocks not the HD for a composite spring. Ive tried both and suggest the HD for steel spring and Sport for composite spring at least that is what worked best for me with a 330 lb VBP spring. HD on the front and Sport on the back seems to be a good combination.
Last edited by Haggisbash; Aug 7, 2020 at 06:47 PM.
Melting Slicks
Joined: Apr 2001
Posts: 2,030
Likes: 363
From: Lubbock Texas
I gave up my Gas-A-Just shocks for the Bilsteins HDs after I installed my composite spring. The HDs were much better. The rear is a still a little stiff and bouncy unless the road is very smooth. Some have suggested the ideal combination is Bilstein HDs in the front and Bilstein Sports in the rear with a composite spring.
DC
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
About any good gas shock would solve your problem. Your rear shocks are shot if the rear bounces over a 'speed-bump' (at slow speed). Bilsteins would be best. Go with B8's in the rear and B6's in front.....unless you have changed front springs to stiffer pieces---then go with B8's all around.
Drifting<br><img src="/forums/images/ranks/2k-3k.gif" border="0">
Joined: Aug 2016
Posts: 1,868
Likes: 826
From: Grosse Pointe, MI
I had QA1's with my composite and had a bouncy butt. Swapped them with QA1 single adjustable shocks and the problem is solved.
Patrick
Patrick
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Melting Slicks
Joined: Jul 2010
Posts: 3,176
Likes: 633
From: perth western australia
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there's both types , Summit seem to have the best overseas shipping rates , to here anyway.
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Last edited by bazza77; Aug 9, 2020 at 04:58 AM.
Le Mans Master
Joined: Oct 2007
Posts: 7,441
Likes: 964
From: Tennessee/Rhode Island
First off, NOT any gas shock will correct the bouncy ride using a composite spring. In fact, most gas shocks will NOT fix that issue! You need the correct gas shock that is valved with proper compression and rebound characteristics to address this characteristic.
I mentioned the Bilstein Sports (30% stiffer than the HD's) back in this thread from 2009. I replaced the Bilsteins HDs all around, front and rear, with Bilstein Sports, in the rear only, around 2006, which did solve the bouncy ride of my VBP 360 monospring that I installed myself in 1986 and had been used with KYB Gas A Just, Konis, and Bilstein HD's only. At that time I got lots of questions about mixing the Sports with HD's which is very common in racing, but pretty new to C3 owners at that time. The Bilstein Sports in the rear only with HD's up front will solve your issue.
https://www.corvetteforum.com/forums...n-c3-ride.html
I mentioned the Bilstein Sports (30% stiffer than the HD's) back in this thread from 2009. I replaced the Bilsteins HDs all around, front and rear, with Bilstein Sports, in the rear only, around 2006, which did solve the bouncy ride of my VBP 360 monospring that I installed myself in 1986 and had been used with KYB Gas A Just, Konis, and Bilstein HD's only. At that time I got lots of questions about mixing the Sports with HD's which is very common in racing, but pretty new to C3 owners at that time. The Bilstein Sports in the rear only with HD's up front will solve your issue.
https://www.corvetteforum.com/forums...n-c3-ride.html
Last edited by jb78L-82; Aug 9, 2020 at 06:17 AM.
Le Mans Master
Joined: Oct 2007
Posts: 7,441
Likes: 964
From: Tennessee/Rhode Island
With a 360 lbs spring, I had the HD's first and it did improve the bouncy issue, but not eliminate it. The Sports with my 360 spring solved the problem and since the OP has a 340lbs spring, my guess is that the Sports will work better as a resolution to the issue, since the difference in ratings is very small, 20lbs.
Last edited by jb78L-82; Aug 10, 2020 at 06:23 AM.
Burning Brakes
Joined: Sep 2013
Posts: 1,206
Likes: 365
From: The Motor City
With a 360 lbs spring, I had the HD's first and it did improve the bouncy issue, but not eliminate it. The Sports with my 360 spring solved the problem and since the OP has a 340lbs spring, my guess is that the Sports will work better as a resolution to the issue, since the difference in ratings is very small, 20lbs.
Thread Starter
Melting Slicks
Joined: Nov 2017
Posts: 2,342
Likes: 517
Thanks gentlemen !! I appreciate all the input.
I find the bouncy butt difficult to live with so I ordered some Bilstein Sport dampers. I'll let you know if that solves the issue.
My fingers are crossed.
I find the bouncy butt difficult to live with so I ordered some Bilstein Sport dampers. I'll let you know if that solves the issue.
My fingers are crossed.
