CUTTING SPRINGS
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
CUTTING SPRINGS
Is there a chart or rule of thumb that X amount of coil cut equals Y amount of drop?
Specifics:
68 vert
SB all iron
350 coil over springs + drop with threaded collar from bottomed out to ten threads up= additional 2"
height adjustment 28" to 26.25"
I figure 2 coils. But once it's cut game over. So I don't need any mistakes.
Specifics:
68 vert
SB all iron
350 coil over springs + drop with threaded collar from bottomed out to ten threads up= additional 2"
height adjustment 28" to 26.25"
I figure 2 coils. But once it's cut game over. So I don't need any mistakes.
Senior Member since 1492
Joined: Aug 2000
Posts: 87,955
Likes: 156
From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Re: CUTTING SPRINGS (Cali,68,L-79)
[QUOTE]
SB all iron
350 coil over springs + drop with threaded collar from bottomed out to ten threads up= additional 2"
height adjustment 28" to 26.25"
QUOTE]
I have no idea what you mean there. 2 coils though is a bit much. I cut 3/4 of a coil and am down to 26.5in fender lip height. Better to go a little at a time.
Len
SB all iron
350 coil over springs + drop with threaded collar from bottomed out to ten threads up= additional 2"
height adjustment 28" to 26.25"
QUOTE]
I have no idea what you mean there. 2 coils though is a bit much. I cut 3/4 of a coil and am down to 26.5in fender lip height. Better to go a little at a time.
Len
Le Mans Master
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
Re: CUTTING SPRINGS (Cali,68,L-79)
... so the new 'cali' has coil-overs ?
I would ask Norval on this one, since he has mucked around with the coil overs all winter.
Dave's saying that his height adjustment is currently 26.25 to 28 inches.
I assume he is shooting for more like 25-27".
Remember - the coil rate is gonna go up as you trim them down.
:smash: :seeya
[Modified by NHvette, 6:12 PM 2/12/2004]
I would ask Norval on this one, since he has mucked around with the coil overs all winter.
Dave's saying that his height adjustment is currently 26.25 to 28 inches.
I assume he is shooting for more like 25-27".
Remember - the coil rate is gonna go up as you trim them down.
:smash: :seeya
[Modified by NHvette, 6:12 PM 2/12/2004]
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Re: CUTTING SPRINGS (NHvette)
... so the new 'cali' has coil-overs ?
http://forums.corvetteforum.com/zerothread?id=748544
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: CUTTING SPRINGS (Cali,68,L-79)
Do you want to cut the new semi coil over springs? You caný cut a lot off those, I believe they are conical so the rate is progressive and you need the wide top end to seat in the spring pocket. Cutting 2 coild is a lot, I'd start off with 1/2 a coil and then heating the remaining half and bending it down to fixate it.
So..the kit does not give enough drop on the front. Excuse my ignorance but what the hell is the use then? That just eliminated the only plus on them, for adjustable shocks you could have installed some HAL or other brand adjustables without the whole coil over deal.
So..the kit does not give enough drop on the front. Excuse my ignorance but what the hell is the use then? That just eliminated the only plus on them, for adjustable shocks you could have installed some HAL or other brand adjustables without the whole coil over deal.
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: CUTTING SPRINGS (Cali,68,L-79)
David:
Wasn't there a thread a while back about not being able to lower those shocks below 26.5" or the shock would bottom out on a hard bump?
Did you have those shocks dynoed before installing them so you have an even starting point to adjust them to?
Pete
Wasn't there a thread a while back about not being able to lower those shocks below 26.5" or the shock would bottom out on a hard bump?
Did you have those shocks dynoed before installing them so you have an even starting point to adjust them to?
Pete
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Re: CUTTING SPRINGS (Pete79L82)
David:
Wasn't there a thread a while back about not being able to lower those shocks below 26.5" or the shock would bottom out on a hard bump?
Did you have those shocks dynoed before installing them so you have an even starting point to adjust them to?
Pete to what do you mean having the shocks dynoed????
Pete
Wasn't there a thread a while back about not being able to lower those shocks below 26.5" or the shock would bottom out on a hard bump?
Did you have those shocks dynoed before installing them so you have an even starting point to adjust them to?
Pete to what do you mean having the shocks dynoed????
Pete
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Re: CUTTING SPRINGS (Twin_Turbo)
Do you want to cut the new semi coil over springs? You caný cut a lot off those, I believe they are conical so the rate is progressive and you need the wide top end to seat in the spring pocket. Cutting 2 coild is a lot, I'd start off with 1/2 a coil and then heating the remaining half and bending it down to fixate it.
So..the kit does not give enough drop on the front. Excuse my ignorance but what the hell is the use then? That just eliminated the only plus on them, for adjustable shocks you could have installed some HAL or other brand adjustables without the whole coil over deal.
So..the kit does not give enough drop on the front. Excuse my ignorance but what the hell is the use then? That just eliminated the only plus on them, for adjustable shocks you could have installed some HAL or other brand adjustables without the whole coil over deal.
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: CUTTING SPRINGS (Cali,68,L-79)
Pete to what do you mean having the shocks dynoed????
As you know the adjustment ***** on those Afco shocks do not have a detent to "click" to. The numbers on the **** is strickly a reference point, not an exact refference point. I don't have my reference sheet for excact number right with me but to give you an example: If you want an adjustment of 100# low speed velocity and 2000# high speed velocity on compression (which is approx a #5 rating) you may have to set one shock to #4 on the **** and the other shock to #6 on the ****. That way both shocks will have the same compresion damping.force. And then do the same with extension adjustment.
If you set both shock to a #5 setting on the **** you could be off as much as a 100# force variance between shocks which can make for erratic handling at times. This is true for just adout any adjustable shock.
Those shocks were very popular on race cars a few years ago, but because they are so difficult to adjust without having a shock dyno right at the race track with you that very few people use adjustable shock on a race car anymore.
If you do some checking around you should be able to find someone in your area that has a shock dyno, most top race teams have them.
Pete
[Modified by Pete79L82, 10:06 AM 2/15/2004]
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: CUTTING SPRINGS (NHvette)
I would ask Norval on this one, since he has mucked around with the coil overs all winter.
Funny NHvette but yesterday I was finally finished the coil overs and was setting the height. My setup is totally different and I can go from about 25 inches to 30 plus easily.
I have 5 inches of threaded body and if I drop the threaded holder all the way to the bottom my tires would rub on the lip. I adjusted them up 2 inches from the bottom and I am at 28 inches. I want something a little lower so I just back off the adjustment.
I would never cut my coilover springs. they are totally flat, top and bottom so any cutting destroys the flat bottom and would cause the springs to fowl on the shock and cause rubbing on the body.
After spending I think I read $950 for the setup I would be very upset if I had to cut. That $950 I though was for the semi coil overs, My full coil overs were $730.
Funny NHvette but yesterday I was finally finished the coil overs and was setting the height. My setup is totally different and I can go from about 25 inches to 30 plus easily.
I have 5 inches of threaded body and if I drop the threaded holder all the way to the bottom my tires would rub on the lip. I adjusted them up 2 inches from the bottom and I am at 28 inches. I want something a little lower so I just back off the adjustment.
I would never cut my coilover springs. they are totally flat, top and bottom so any cutting destroys the flat bottom and would cause the springs to fowl on the shock and cause rubbing on the body.
After spending I think I read $950 for the setup I would be very upset if I had to cut. That $950 I though was for the semi coil overs, My full coil overs were $730.
Team Owner
Joined: May 2001
Posts: 29,745
Likes: 3
From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: CUTTING SPRINGS (Twin_Turbo)
So..the kit does not give enough drop on the front. Excuse my ignorance but what the hell is the use then? That just eliminated the only plus on them, for adjustable shocks you could have installed some HAL or other brand adjustables without the whole coil over deal.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: CUTTING SPRINGS (BSeery)
That and the crappy way they are mounted is the main reasons I won't buy this setup.
I agree about the crappy way they are mounted but to be a true bolt in that is about the only way possible. Anything else would require welding and there goes the bolt in. I installed true coil overs and it required alot of cutting and welding. No way to bolt in anything else.
I agree about the crappy way they are mounted but to be a true bolt in that is about the only way possible. Anything else would require welding and there goes the bolt in. I installed true coil overs and it required alot of cutting and welding. No way to bolt in anything else.
Team Owner
Joined: May 2001
Posts: 29,745
Likes: 3
From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: CUTTING SPRINGS (norvalwilhelm)
That and the crappy way they are mounted is the main reasons I won't buy this setup.
I agree about the crappy way they are mounted but to be a true bolt in that is about the only way possible. Anything else would require welding and there goes the bolt in. I installed true coil overs and it required alot of cutting and welding. No way to bolt in anything else.
I agree about the crappy way they are mounted but to be a true bolt in that is about the only way possible. Anything else would require welding and there goes the bolt in. I installed true coil overs and it required alot of cutting and welding. No way to bolt in anything else.
Mind you, no one has had any problems. I just feel this is a weak spot and that is MY opinion. Speed Direct can do whatever they want and if they feel it has been tested to their standards they should be happy with that.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: CUTTING SPRINGS (BSeery)
They could put a metal insert that sits down in the pocket of the spring/shock area. Beef up that area and have the bolts pass through the shock mount, the metal insert and then out through the bottom of the a-arm. This would help prevent the shock combo from blowing out the bottom of the car.
I agree with you BSeery. I feel this is a weak spot and it has not been sujected to enough testing. Your idea would definitely work but add alot to the kit.
I agree with you BSeery. I feel this is a weak spot and it has not been sujected to enough testing. Your idea would definitely work but add alot to the kit.