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

new Front springs or ?

  • Thread starter Thread starter pabear89
  • Start date Start date Jun 20, 2007

pabear89

Active Member
Apr 15, 2003
2,126
0
46
High in the Hills of So Ca with the Voices in My H
Jun 20, 2007
#1
  • Jun 20, 2007
  • #1
.... Well I'm stuck on this one.
I have a set of Big Block springs that I removed less than a quarter of a coil from when it had stock spring perches on it and it rode like a lumber truck.

I replaced the perches with Ot's roller perches and it did allow spring movment plus a whole new handling and ride,the front came down about 1in also
and it looks good.

Well......It seemed that the engine had some oil issues, it started to drink a quart in 75-100 miles.

But on the plus side it gave me an excuse to pull it and throw on some of the parts I have been collecting.

While I thought that I might be losing some front weight by removing the cast parts and replacing them with alum peices it seems that it gain a few pounds more.

Now when I pass over a swell in the road the headers smack the pavement when the front comes back down.
I know they are a slight bit lower than the stock exhaust (the lower tubes hang below where the old pipes were) but they never hit except if I took a steep driveway too fast.

Now some say that cutting the coils make for stiffer spring rates,
but this is not happening here.
Should I buy a new set of stock BB springs and replace them?
Or Will a pair of 1in poly spring pads make up for the drop and travel.

I need to do something before I have a set of flat lower tubed Hookers.

Any Ideas fellow stanger's?

PB

ps. eng pic's are in mach motor folder,
http://s145.photobucket.com/albums/r237/mach1rider/
 

65fastbackresto

Active Member
Apr 13, 2007
1,229
7
39
AR
Jun 20, 2007
#2
  • Jun 20, 2007
  • #2
I`d try the spacers

I got a set 3 feet from me just waiting for the chance to jump on my car. Cheap fix too.
 

jcode68

Active Member
Jul 15, 2003
892
1
29
Massachussetts
Jun 20, 2007
#3
  • Jun 20, 2007
  • #3
Did you change your motor mounts in the process? Might explain the engine sitting a little lower.
 
M

mikethebike

Member
Jun 12, 2007
358
0
17
Greenville, SC
Jun 20, 2007
#4
  • Jun 20, 2007
  • #4
Cutting the coil DOES increase the rate. Period. All a coil is is a spring bar wrapped into a coil. When you cut ANY length from that bar you increase the rate by the % you shortened the bar. It may not seem like it with the new roller perches but it did indeed increase the sring rate.
 
G

Grabber70Mach

Member
Jul 6, 2003
305
0
17
Indian Head, MD
Jun 20, 2007
#5
  • Jun 20, 2007
  • #5
pabear89 said:
.... Well I'm stuck on this one.
I have a set of Big Block springs that I removed less than a quarter of a coil from when it had stock spring perches on it and it rode like a lumber truck.

I replaced the perches with Ot's roller perches and it did allow spring movment plus a whole new handling and ride,the front came down about 1in also
and it looks good.

Well......It seemed that the engine had some oil issues, it started to drink a quart in 75-100 miles.

But on the plus side it gave me an excuse to pull it and throw on some of the parts I have been collecting.

While I thought that I might be losing some front weight by removing the cast parts and replacing them with alum peices it seems that it gain a few pounds more.

Now when I pass over a swell in the road the headers smack the pavement when the front comes back down.
I know they are a slight bit lower than the stock exhaust (the lower tubes hang below where the old pipes were) but they never hit except if I took a steep driveway too fast.

Now some say that cutting the coils make for stiffer spring rates,
but this is not happening here.
Should I buy a new set of stock BB springs and replace them?
Or Will a pair of 1in poly spring pads make up for the drop and travel.

I need to do something before I have a set of flat lower tubed Hookers.

Any Ideas fellow stanger's?

PB

ps. eng pic's are in mach motor folder,
http://s145.photobucket.com/albums/r237/mach1rider/
Click to expand...

Kinda off your subject, but what brand r&c are you running? Is it on the 70Mach1 are you happy with it?

Thanks
 

pabear89

Active Member
Apr 15, 2003
2,126
0
46
High in the Hills of So Ca with the Voices in My H
Jun 21, 2007
#6
  • Jun 21, 2007
  • #6
65fastbackresto said:
I got a set 3 feet from me just waiting for the chance to jump on my car. Cheap fix too.
Click to expand...

Me LIKE Cheap!
But will it just be a bandaid or will it really help?
If I have to take out the springs I only want to do it once.
 

pabear89

Active Member
Apr 15, 2003
2,126
0
46
High in the Hills of So Ca with the Voices in My H
Jun 21, 2007
#7
  • Jun 21, 2007
  • #7
jcode68 said:
Did you change your motor mounts in the process? Might explain the engine sitting a little lower.
Click to expand...

No the same mounts are in place.
and the exhaust pipes went into the collectors with only widing the x pipe some.

I knew it went back togeather too easy.
 

pabear89

Active Member
Apr 15, 2003
2,126
0
46
High in the Hills of So Ca with the Voices in My H
Jun 21, 2007
#8
  • Jun 21, 2007
  • #8
mikethebike said:
Cutting the coil DOES increase the rate. Period. All a coil is is a spring bar wrapped into a coil. When you cut ANY length from that bar you increase the rate by the % you shortened the bar. It may not seem like it with the new roller perches but it did indeed increase the sring rate.
Click to expand...

If that is true, these 800# BB springs should not have as much give with this 351Cj in it. unless the extra weight of the scattersheild is pushing the weight up to BB size.
 

pabear89

Active Member
Apr 15, 2003
2,126
0
46
High in the Hills of So Ca with the Voices in My H
Jun 21, 2007
#9
  • Jun 21, 2007
  • #9
zincyellow said:
Kinda off your subject, but what brand r&c are you running? Is it on the 70Mach1 are you happy with it?

Thanks
Click to expand...

Ahh....? Sorry Brain fart. I'm Happy with my Mach.
 
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