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Old 07-21-2021   #1
Erik
 
Join Date: Nov 2016
Location: New Brunswick
Posts: 956
Default Re: Cutting Rubber Spacers On 1992+ Front Springs - How Much

And here are my springs. How much should be cut and from where exactly?
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1990 ZR-1 # 996

"All Corvettes are red. The rest are mistakes." - John Heinricy
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Old 07-21-2021   #2
secondchance
 
Join Date: Aug 2006
Location: McLean, VA
Posts: 3,738
Default Re: Cutting Rubber Spacers On 1992+ Front Springs - How Much

Quote:
Originally Posted by Erik View Post
And here are my springs. How much should be cut and from where exactly?
Front spring I believe is from later cars judging by puck at the tips. At least based on my observation, all 90s and 91s I have seen had flat plates at the tip.
What I did was cut off pucks at both ends. That dropped the front height by about 1/2?. With both ends trimmed, angled approach allows me to avoid scraping of front air dam (I have M1 prowler) over rain gutters and steep drive ways as long as I keep my speed reasonable.
If you want to lower more, you need to trim the top of two mounting points. By doing so, you will have to approach rain gutters and steep driveways with more caution.
I noticed that most cars that had polyurethane wedges, when springs were removed, we discovered polyurethane wedges were typically ground off and gone.
I have not tried but partial trimming of rubber mounting points and reattaching of steel plates using high strength adhesive such as contact cement may survive better than polyurethane wedge.
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Old 07-22-2021   #3
Erik
 
Join Date: Nov 2016
Location: New Brunswick
Posts: 956
Default Re: Cutting Rubber Spacers On 1992+ Front Springs - How Much

Quote:
Originally Posted by secondchance View Post
Front spring I believe is from later cars judging by puck at the tips. At least based on my observation, all 90s and 91s I have seen had flat plates at the tip.
What I did was cut off pucks at both ends. That dropped the front height by about 1/2?. With both ends trimmed, angled approach allows me to avoid scraping of front air dam (I have M1 prowler) over rain gutters and steep drive ways as long as I keep my speed reasonable.
If you want to lower more, you need to trim the top of two mounting points. By doing so, you will have to approach rain gutters and steep driveways with more caution.
I noticed that most cars that had polyurethane wedges, when springs were removed, we discovered polyurethane wedges were typically ground off and gone.
I have not tried but partial trimming of rubber mounting points and reattaching of steel plates using high strength adhesive such as contact cement may survive better than polyurethane wedge.
So, just the pucks at the ends need to be trimmed. Got it. I don't really want to lower it, but just keep it about the same as it is.

What are these polyurethane wedges? This is something the factory fitted? What do they do?

Thanks for the info.
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1990 ZR-1 # 996

"All Corvettes are red. The rest are mistakes." - John Heinricy
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Old 07-22-2021   #4
secondchance
 
Join Date: Aug 2006
Location: McLean, VA
Posts: 3,738
Default Re: Cutting Rubber Spacers On 1992+ Front Springs - How Much

Quote:
Originally Posted by Erik View Post
So, just the pucks at the ends need to be trimmed. Got it. I don't really want to lower it, but just keep it about the same as it is.

What are these polyurethane wedges? This is something the factory fitted? What do they do?

Thanks for the info.
Polyurethane wedges are sold as spring modification pieces. Cut off rubber bumper mounting pieces and glue polyurethane wedges instead. These are lower profile and used to lower the car.
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