Results 1 to 4 of 4

Thread: cut coils

  1. #1
    Senior Member
    Join Date
    Apr 2010
    Location
    snohomish, washington
    Posts
    497

    cut coils

    Does anyone know how many coils cut equals certain lengths. I'm trying to drop my corolla 4 1/2 in. In the front. I'm just doin this till I can afford a true suspension setup. Any info would be tight. Thanks .

  2. #2
    Senior Member
    Join Date
    Dec 2009
    Location
    Netherlands
    Posts
    615

    Re: cut coils

    just chop off 2 coils, and testfit, if you need more low chop of another coil, there is no way of pre measuirng how much your car will be lower if you cut of one or two coils.

  3. #3
    Senior Member
    Join Date
    Sep 2009
    Location
    Los Angeles
    Posts
    161

    Re: cut coils

    Actually, you can get a rough estimate: Since your Corolla has McPherson struts, the front suspension has a motion ratio of nearly (see below) 1:1. Put the car on the ground and measure the distance between coils. Divide your desired drop (4.5in) by that number to get the # of coils. A couple of caveats:

    1. This will get you close to your desired drop. However, when you cut coils, the spring rate goes up so your car will not drop as much as you thought (spring rate is a function of the number of free coils so, if your spring had 10 free coils and you cut two, your spring rate will go up about 20%).

    2. Because the strut is at a slight angle the motion ratio is not a true 1:1 but it is close.

    I suggest you have an extra set of coils readily available just in case you cut too much...

  4. #4
    Senior Member
    Join Date
    Nov 2010
    Location
    NC
    Posts
    289

    Re: cut coils

    I suggest starting with 1 coil and test fitting, cutting 1/4 to 1/2 coil at the time afterwards. That way you dont cut too much like I did initially. But you can just fix it by making spring spacers like I did if you go too far.

Similar Threads

  1. mazda rx2 series 3 coils bracket
    By poptaclutch in forum Mazda Swap Meet
    Replies: 0
    Last Post: 07-16-2015, 09:25 AM
  2. MX32 rear on AE86 coils
    By in forum Toyota Garage
    Replies: 19
    Last Post: 02-28-2014, 08:38 PM
  3. WTB AE86 front coils
    By in forum Toyota Swap Meet
    Replies: 0
    Last Post: 03-18-2013, 07:11 AM
  4. Cutting the coils on my mx32!!
    By x1980xCressidax in forum Toyota Garage
    Replies: 11
    Last Post: 05-17-2011, 11:29 PM
  5. How many coils should I cut to get 3-4" of drop?
    By 1978 ke30 in forum Toyota Garage
    Replies: 11
    Last Post: 03-06-2011, 12:01 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •