Rear to high, help please
Thread Starter
Pro
Joined: Apr 2014
Posts: 615
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From: Orlando, Dundee, Val-des-Monts PQ
Rear to high, help please
1970 convertible, L-46. Rear height 29 1/2 inches, 225-70-15 tires, 6 inch bolts, 9 leaf steel spring. Want/need to lower rear, , the rubbers in existing spring starting to slip out. Which composite spring (lbs. + manufacture) do you recommend? Or just go to 8" bolts? Thanks in advance for any help, Mark
Thread Starter
Pro
Joined: Apr 2014
Posts: 615
Likes: 187
From: Orlando, Dundee, Val-des-Monts PQ
Yes, car is together. I am photo posting challenged. Do not know if spring is original. No idea of specifications. What composite spring is recommended? I had a steel one break on a 74 close to 40 years ago and the pucker factor is still very vivid. Thank you for the reply.
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
I believe you could go to 8" bolts without creating a problem if you have a flat. That's the maximum length though.
But I would switch to a VB&P spring; probably a 330 lb spring. Depends on your driving habits and what you want to achieve. I'd call VB&P and ask for their recommendation.
I'm running a 300 lb spring with a 3/4" sway bar in the rear. A little unconventional but it works well for me.
Do not buy a TRW style spring made by Muskegon Brakes. They are known to have an incorrect arch and will raise your rear higher than it is now.
But I would switch to a VB&P spring; probably a 330 lb spring. Depends on your driving habits and what you want to achieve. I'd call VB&P and ask for their recommendation.
I'm running a 300 lb spring with a 3/4" sway bar in the rear. A little unconventional but it works well for me.
Do not buy a TRW style spring made by Muskegon Brakes. They are known to have an incorrect arch and will raise your rear higher than it is now.
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From: New Or-leens Loo-z-anna
Spare tire installed?
Gas tank at least 1/2 filled?
Driver 180 lbs. or more sitting in car?
Compensation in some form has to be allowed for each "lost pound"......then, adjust bolts or buy new spring.
Gas tank at least 1/2 filled?
Driver 180 lbs. or more sitting in car?
Compensation in some form has to be allowed for each "lost pound"......then, adjust bolts or buy new spring.
Supporting Vendor
Joined: Mar 2008
Posts: 576
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From: Muskegon MI
The height inconsistency has been resolved. We actually switched manufacturers for our fiberglass and resin process. The inconsistency was due to resin/fiber ratios. Our spring is designed by TRW to be a factory replacement. We utilize 7-1/4" bolts with our kit to safely avoid the tire and keep ride height where it should be. If you have any questions regarding the springs available or the processes involved we are always happy to help you make the best informed decision possible.
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
The height inconsistency has been resolved. We actually switched manufacturers for our fiberglass and resin process. The inconsistency was due to resin/fiber ratios. Our spring is designed by TRW to be a factory replacement. We utilize 7-1/4" bolts with our kit to safely avoid the tire and keep ride height where it should be. If you have any questions regarding the springs available or the processes involved we are always happy to help you make the best informed decision possible.
Until I receive a refund for the unusable TRW spring I was forced to discard, I'll continue to recommend VB&P springs. Theirs are manufactured in house where they have total control. I've personally visited their facility and reviewed their manufacturing processes.
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Supporting Vendor
Joined: Mar 2008
Posts: 576
Likes: 3
From: Muskegon MI
Wow, finally an admission that your springs are defective! So how are you going to compensate those of us who purchased your unsafe "inconsistent" springs?
Until I receive a refund for the unusable TRW spring I was forced to discard, I'll continue to recommend VB&P springs. Theirs are manufactured in house where they have total control. I've personally visited their facility and reviewed their manufacturing processes.
Until I receive a refund for the unusable TRW spring I was forced to discard, I'll continue to recommend VB&P springs. Theirs are manufactured in house where they have total control. I've personally visited their facility and reviewed their manufacturing processes.
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
Kid Vette, I never said anything about our springs being defective, let alone unsafe. We have never had a complete failure. We have never had a spring break. We had at the most 3 springs out of a batch of 300 that caused a car to sit high. And even then it depended on the car. What then may have sat high on a mid year, didn't on a C3. I've always been willing to take care of these specific instances. I would be more than happy to discuss your displeasure further. You're welcome to shoot me a PM, E-mail me at vettedesk@muskegonbrake.com, or call us at 800-442-0335.
I could list more but why bother.High riding TRW Fiberglass Rear Spring
New rear spring ride height too high
High riding TRW Fiberglass Rear Spring
TRW Fiberglass Rear Spring
TRW vs. VBP composite spring results
Getting back to stock ride height
Supporting Vendor
Joined: Mar 2008
Posts: 576
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From: Muskegon MI
Intermediate
Joined: Feb 2010
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I don’t know about the TRW, but I had a #360 Hyperco from Ecklers and I spent years swearing and re-installing with different sized bolts, strapping it down...and it still had a 2-3” lift.
I finally bit the bullet and got a 330#VB&P. 30 minutes later it was adjusted to the perfect height.
If you are looking for a nice raked look with a 2-3” lift, let me know, I got a slightly used Hyperco for you at a really good price!!!
I finally bit the bullet and got a 330#VB&P. 30 minutes later it was adjusted to the perfect height.
If you are looking for a nice raked look with a 2-3” lift, let me know, I got a slightly used Hyperco for you at a really good price!!!
Me!
