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Old 01-17-2013, 03:09 PM   #1 (permalink)
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Default HOW-TO: Cut OEM Springs

So, as many of you know, the options for MS6 springs is horrible now that RPM no longer produces springs. FORZDA 1 has run cut OEM springs for 30-40k on his car (which is also tracked), and has only raved about it. After much research and deliberating, I spoke with FORZDA and went for it.
  1. Cut 1 coil from bottom/skinny portion of the front springs
  2. Cut 1 coil from the top/larger circumference rear springs
  3. File the edges to make a smooth surface
  4. Use primer and black spray paint to seal the exposed steel
  5. Install

When cutting the coils:
  • Use only a high-speed machine blade, no heat or hack-saw (I used an angle grinder with a carbine blade-worked very well)
  • Move the blade in a back and forth motion while pushing down to give a single-swipe, smooth cut
  • Make sure to secure the springs well, I used a clamp, as seen in picture
  • Springs get hot, be careful






    When Installing:
    • Make sure the front springs are snugly seated against the bottom of the shock body. I loosened the spring compressor gradually, adjusted, loosened, ect.. to ensure it seated well
    • Make sure to loosen all the control arm bolts when putting the car back on the ground after installing, or it will not settle well on your various bushings. Once on the ground, tighten all bolts to spec. (see the how-to for #'s)

Impressions:
The car rides very well, and I am getting it aligned as we speak, so handling will be fun to test-out this weekend. I have had both H&R and RPM springs, and these are give or take identical in ride quality/drop as the RPM street springs (spring rate may be marginally different, but not noticeable).

After the cut, the front sits at -1 camber (non adjustable), which is perfect, and I am having the rear set at -1 as well, with 0 toe front/rear.

Here are some pictures for fun, and once again, a big thanks to FORZDA for inspiration and his vast knowledge and help with this project.

*NOTE* I am running 42PSI in 225/45/18 touring tires, which makes it appear to sit a little higher





Comparison to RPM Street spring= identical


Discussion on the subject:
http://www.mazdaspeedforums.org/foru...springs-91949/
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Last edited by oh_yeams6; 01-17-2013 at 04:17 PM.
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Old 01-17-2013, 03:20 PM   #2 (permalink)
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Is it bouncy like those honda cutted springs?
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Old 01-17-2013, 03:26 PM   #3 (permalink)
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Default Re: HOW-TO: Cut OEM Springs

Here comes the flaming......

For real though, it looks really good!
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Old 01-17-2013, 03:26 PM   #4 (permalink)
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Quote:
Originally Posted by block8head View Post
Is it bouncy like those honda cutted springs?
No, it rides very well, see "impressions" above
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Old 01-17-2013, 03:41 PM   #5 (permalink)
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Quote:
Originally Posted by dd_69 View Post
Here comes the flaming......

For real though, it looks really good!
It's not Flaming, just a questions.
Because most of cutted springs gives you the bouncy status.. I'm not a Hater by any mean..
I used to have a honda accord with cutted springs..
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Old 01-17-2013, 03:52 PM   #6 (permalink)
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Default Re: HOW-TO: Cut OEM Springs

Quote:
Originally Posted by block8head View Post
It's not Flaming, just a questions.
Because most of cutted springs gives you the bouncy status.. I'm not a Hater by any mean..
I used to have a honda accord with cutted springs..
I wasn't speaking of you. But somebody will flame.... Guaranteed.
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Old 01-17-2013, 04:02 PM   #7 (permalink)
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Quote:
Originally Posted by dd_69 View Post
Here comes the flaming......

For real though, it looks really good!
Unless people can prove a downside to this, they can try and start their fire all day long.

I am very open to feedback, and the whole reason I did this was to remove the "scary, but, what-if" feelings people have towards cut springs.

I just got the car back from an alignment, and it rides so well!
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Old 01-17-2013, 04:03 PM   #8 (permalink)
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Are those my springs?

YOU MURDERER
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Old 01-17-2013, 04:06 PM   #9 (permalink)
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I know the history behind this, and Forzda is about the only person I'd trust for this mod.
I've seen Forzda's results, and his racing results on this same configuration.

Glad to see you do this Chris, and if you get half the results that he did you're gonna enjoy the hell outta them

I'd do it. And if I get tired of my H&R's having my nose dropped so damn low this is how I would replace them.
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Old 01-17-2013, 04:17 PM   #10 (permalink)
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Default

Here's some reference....
Cutting Stock Springs
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