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    Thread: spring mods

    1. #1
      Join Date
      Nov 2011
      Posts
      29

      spring mods

      Has anyone done a car on a budget and cut a coil off the front coil and pulled a leaf from the rear to lower? What were the results or good idea bad idea?

    2. #2
      Join Date
      Apr 2010
      Location
      Pittsburgh, PA
      Posts
      717
      I think its a bad idea as it changes the spring rate..also if you cut too much youre screwed
      never heat the coil spring either
      rear you can always just get a drop ubolt kit from advance
      72 buick skylark
      twin-turbo fuel injected buick 350..perhaps stroked to 370 in the works!

    3. #3
      Join Date
      Feb 2006
      Location
      Idaho Falls, Id
      Posts
      1,342
      People will argue about this until the end of time, but cutting coil springs has been common in the race world for years. The biggest problem with cutting coils is using the same shocks. Cutting a coil will make it stiffer, which is usually not a bad thing since aftermarket coils would be stiffer anyway. However removing a leaf in the rear would make the spring softer, so a drop block kit is probably a better idea.

      To drop a car on the cheap, I don't see anything wrong with cutting coils. It's probably not going to ride the best, especially with stock shocks, but it doesn't cost anything to do, so if you hate it you can always upgrade later.
      Traven

    4. #4
      Join Date
      Nov 2011
      Posts
      29
      Thx for the advice guys.

    5. #5
      Join Date
      Jul 2010
      Location
      Sacramento, CA
      Posts
      1,214
      Country Flag: United States
      Cuting a coil will not change its rate. On most muscle cars the correct rate of springs is only aboit $100. You can have leaf springs de arched and not lose any rate as well.
      -James

      1974 Z28 SCCA C Prepared
      1990 Firebird NASA CMC
      2005 Mustang GT SCCA F-Street (new for 2015)
      1989 Civic Si SCCA STC

    6. #6
      Join Date
      Apr 2010
      Location
      Pittsburgh, PA
      Posts
      717
      actually it does, just does opposite of what I assumed
      cutting the coil spring shorter increases the rate of the spring..so i guess no cons to doing this as i originally thought

      http://www.eatondetroitspring.com/cu...scalculations/
      72 buick skylark
      twin-turbo fuel injected buick 350..perhaps stroked to 370 in the works!

    7. #7
      Join Date
      Sep 2005
      Posts
      49,371
      Country Flag: United States
      Everytime I watched the TV Show "Car Warriors" they cut a Coil & they always went Too Far - if you do that, you're Toast & have to buy a new set!

    8. #8
      Join Date
      Apr 2010
      Location
      Pittsburgh, PA
      Posts
      717
      so, cut half a coil instead..install..if not to your liking cut the other half to get 1 full coil off
      but that just sounds like a pain in the arse to do haha
      72 buick skylark
      twin-turbo fuel injected buick 350..perhaps stroked to 370 in the works!

    9. #9
      Join Date
      Nov 2011
      Posts
      29
      I had a thought in that if you think what comes on a stock engine heavy cast parts vs performance parts like intake aluminum water pump no ac. I wonder what the affect if any that would be?

    10. #10
      Join Date
      Dec 2006
      Location
      Out of the Burbs of Detroit to SoCal, then onto my ancestral homeland, the woods of Cascadia
      Posts
      1,753
      Country Flag: United States
      On the rear, reverse the spring eye.There's a couple threads on the HAMB on homebuilt tools to reverse the eye

      Greg Fast
      (yes, the last name is spelled correctly)

      1970 Camaro RS Clone
      1984 el Camino
      1973 MGB vintage E/Prod race car
      (Soon to be an SCCA H/Prod limited prep)





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