• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

620's coming unseated

  • Thread starter Thread starter 65intex
  • Start date Start date Jun 6, 2007
6

65intex

New Member
Sep 16, 2006
85
0
0
Ft. Worth, Texas
Jun 6, 2007
#1
  • Jun 6, 2007
  • #1
I know I read of this condition in a past thread I just cant find it now. I recently installed some 620 springs and they raised the front end up way to high. After removing the springs cutting a 1/4 of the coil at a time I finally had the right stance, total of 1/2 coil cut?? Now when I raise the front of the car to where the wheels are off the ground the springs come unseated at the top of the shock towers. It is easy to get them back in place with bungee cords when lowering the car back down but is there a permanent fix for this problem?
 
6

66HertzClone

New Member
Aug 24, 2004
428
0
0
Central New Jersey
Jun 6, 2007
#2
  • Jun 6, 2007
  • #2
No shocks in the car yet? They serve to limit travel and should keep this from happening.
 

geostang351

Member
Mar 30, 2005
946
0
17
Danb., CT
Jun 6, 2007
#3
  • Jun 6, 2007
  • #3
66HertzClone said:
No shocks in the car yet? They serve to limit travel and should keep this from happening.
Click to expand...

Not with the car jacked up. The UCA will drop to its limit and that is when his spring falls out.
 

allcarfan

The Answer Man
Founding Member
Apr 8, 2001
2,458
1
56
North Atlanta
Jun 6, 2007
#4
  • Jun 6, 2007
  • #4
did you install them and drive around a few hundred miles before you cut that spring? They do settle after a few hundred miles


If you cut 1/2 coil off (thats a lot, it is probably going to ride pretty rough) and you dont have any shocks in the car....when you jack it up, yes, the springs are going to come loose.
 

iskwezm

10 Year Member
May 24, 2005
4,159
20
79
Rowland Heights,California
Jun 6, 2007
#5
  • Jun 6, 2007
  • #5
the springs are too short from the cut. Mine are the same way, but they will not fall out under normal driving, only when jacking up the front.im used to it
 
6

65intex

New Member
Sep 16, 2006
85
0
0
Ft. Worth, Texas
Jun 6, 2007
#6
  • Jun 6, 2007
  • #6
Shocks are on the car, when the car is jacked up the UCA will fall to the limit and that is when the shock comes unseated at the top of the shocktower. Before making the cut on the springs I did drive around some but not hundreds of miles, I would think with the technology used in making the springs these days that the 620 springs would not settle a ton. As far as the ride right now its actually really nice, I think the KYB GR2's and the 620's work well together.
 

Jester67

Member
Sep 21, 2004
908
1
18
TN
Jun 6, 2007
#7
  • Jun 6, 2007
  • #7
You can run a nylon limiting strap over the top of the shock and under the spring perch if it is really bothering you. You can get the right material from 4X4 shops. But like stated above it will only be a problem when you jack the car or do your rendition of the original gone in 60 sec.
 

coolblue65

Founding Member
Jul 26, 1999
1,224
2
39
Algonquin, IL
Jun 6, 2007
#8
  • Jun 6, 2007
  • #8
This is actually a fairly common problem with late model cars that have lowering springs added, I have seen it on mustangs and M3. Dont worry about it- they will pop back in to place when you put the car back on the ground.
 

CraigMBA

New Member
Mar 24, 2007
783
1
0
Orange, CA
Jun 6, 2007
#9
  • Jun 6, 2007
  • #9
Add a 1/2" spacer between the shock and the shock tower. This will limit downward travel, and probablly fix it.
 
6

65intex

New Member
Sep 16, 2006
85
0
0
Ft. Worth, Texas
Jun 6, 2007
#10
  • Jun 6, 2007
  • #10
coolblue65 said:
This is actually a fairly common problem with late model cars that have lowering springs added, I have seen it on mustangs and M3. Dont worry about it- they will pop back in to place when you put the car back on the ground.
Click to expand...

Not real worried, dont plan on launching the car anytime soon, just wanted to see if it was common and if there was any simple solution. I will probably just leave them be and enjoy the low ride. Now I just need some larger wheels, im suffering from the small wheel syndrom (14's).
 
S

Sicarius428

Active Member
Jan 6, 2004
2,085
5
49
Jun 6, 2007
#11
  • Jun 6, 2007
  • #11
When you lowered the car, did you use spacers to adjust the shock up. This will also aid in not allowing your UCA going too far down to allow the spring to become undone. A lot of people don't do this measure which doesn't give the shock its ideal dampening.
Kevin
 
6

65intex

New Member
Sep 16, 2006
85
0
0
Ft. Worth, Texas
Jun 6, 2007
#12
  • Jun 6, 2007
  • #12
Sicarius428 said:
When you lowered the car, did you use spacers to adjust the shock up. This will also aid in not allowing your UCA going too far down to allow the spring to become undone. A lot of people don't do this measure which doesn't give the shock its ideal dampening.
Kevin
Click to expand...

No i wasnt aware of the spacers, but then I didnt know that the springs were going to be that short either. I dont think there will be any problems I cant handle, I will get used to the springs being short.
 

zookeeper

Founding Member
Aug 25, 2001
3,415
63
109
Rogue River, Oregon
Jun 6, 2007
#13
  • Jun 6, 2007
  • #13
I don't want to hi-jack the thread or start an arguement, but in my experiences, springs do not settle at all. I've lowered nearly every car I've ever owned, and once you roll the car forward and backwards a bit to get the bind out of the A-arms, it is what it is height-wise, and I have verified that with a tape measure. I also help out with my brother's race car, and we set the cross weights (it's an open-wheeled circle tracker) with scales before the races, and unless he hits something, the cross weight and ride height are always the same. I know it's a commonly accepted idea, and I'm not saying it's never happened, but in my experience, it simply doesn't happen. Having said that, I agree that short springs are prone to dropping out when you jack up both wheels at the same time.
 

HistoricMustang

Active Member
Apr 11, 2003
2,359
0
46
Confederate States of America
Jun 7, 2007
#14
  • Jun 7, 2007
  • #14
65intex said:
I know I read of this condition in a past thread I just cant find it now. I recently installed some 620 springs and they raised the front end up way to high. After removing the springs cutting a 1/4 of the coil at a time I finally had the right stance, total of 1/2 coil cut?? Now when I raise the front of the car to where the wheels are off the ground the springs come unseated at the top of the shock towers. It is easy to get them back in place with bungee cords when lowering the car back down but is there a permanent fix for this problem?
Click to expand...

This is a pain but they are not going anywhere once the car is down. My road racer springs would drop out every time the car when up on jack stands but stayed in place from Daytona to Watkins Glen with no straps, cables or duct tape needed.

Get a buddy to hold the springs in place with a screw driver when lowering the car off jack stands.

HistoricMustang
 
D

deadonarrival

Member
Dec 5, 2003
37
0
6
AZ
Jun 7, 2007
#15
  • Jun 7, 2007
  • #15
I never knew they would fall out either. When I started working on my car I had to wait two weeks for the neighborhood autozone spring compressor loaner to become available. I was dumbfounded when I started taking apart the front suspension and jacked the car up and removed the springs with little to no effort. I couldn't believe I had waited 2 weeks for nothing.
 
B

bnickel

Founding Member
Aug 21, 2002
5,640
3
77
lubbock, texas
Jun 7, 2007
#16
  • Jun 7, 2007
  • #16
you couls also get some modified shock tower caps as well. opentracker can make you a set. scroll down about halfway on this page and you'll see them, it says coming soon but if you shoot him an email i'm sure he wouldn't mind doing a set for you or even tell you how to make them yourself.

http://www.opentrackerracingproducts.com/products/
 
You must log in or register to reply here.

Similar threads

R
1974 Datsun 620 pickup / 5.0L HO
  • RJH46
  • Aug 24, 2025
  • Other Auto Tech
Replies
1
Views
214
Other Auto Tech Aug 24, 2025
Noobz347
P
2000 GT Random Power Loss
  • Pinellas50
  • Mar 9, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
263
SN95 4.6L Mustang Tech Mar 23, 2026
Pinellas50
P
Tuners come on inside
  • squeak93
  • Feb 13, 2026
  • SVT Tech Forum
Replies
1
Views
230
SVT Tech Forum Feb 20, 2026
squeak93
P
Fox 17" Deep Dish Bullitts on Rear of Fox, 275/40/17?
  • pindude80
  • May 2, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
9
Views
706
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 4, 2025
Noobz347
2
Electrical mayhem
  • 2000ElectricGreen
  • Mar 13, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
241
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
2000ElectricGreen
2
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?