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Cutting Performance Springs

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Old May 31, 2009 | 04:42 PM
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Default Cutting Performance Springs

I'm running H&R Race springs on Tokico Illumina shocks on my EG hatch. I wish the front was a little bit lower, probably by half an inch. I know cutting stock springs to lower the car is dangerous because they don't have stiff enough spring rates and all that. Would cutting a little off my H&Rs to bring the ride down half an inch be safe? I figure they have stiff enough spring rates for it to be fine.
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Old May 31, 2009 | 07:56 PM
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batallic's Avatar
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Default Re: Cutting Performance Springs

y dont u just buy coilovers,
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Old May 31, 2009 | 08:32 PM
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Default Re: Cutting Performance Springs

have you tried the pinch fork mod? cut about half inch of the top of the fork that should be good. you keep the same spring/strut rate

Last edited by wannaBjdmca6; May 31, 2009 at 08:33 PM. Reason: nvm. you drive an eg
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Old May 31, 2009 | 08:41 PM
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Default Re: Cutting Performance Springs

The problem with cutting springs period is because they're made to be a certain rate, cut them and it messes with that.
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Old Jun 1, 2009 | 05:54 AM
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Default Re: Cutting Performance Springs

Youll be fine. Just do it right. Keep the spring wet while cutting, and be sure to spray some paint on the end so it doesn't rust. Cutting half a coil off the spring will only raise the spring rate a few pounds per inch. Illuminas should still handle them just fine.

Be sure your bump stops are cut in half, but don't run with less than half of a stock bump stop.
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Old Jun 1, 2009 | 08:34 AM
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Default Re: Cutting Performance Springs

Originally Posted by wannaBjdmca6
have you tried the pinch fork mod? cut about half inch of the top of the fork that should be good. you keep the same spring/strut rate
I'm not familiar with that technique, can you elaborate?
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Old Jun 1, 2009 | 11:40 AM
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Default Re: Cutting Performance Springs

Originally Posted by Dubs13
I'm not familiar with that technique, can you elaborate?
Remove the lower brake line bracket from the shock.
Insert shock into fork, thread pinch bolt in slightly (not tight).
Use large screwdriver / prybar to wedge the fork open slightly and force the shock further down into the fork. Seat it all the way down to where the brake bracket would have been had you not removed it.
Tighten fork bolt to spec.

Should be good for something around a 1/2" drop in the front.
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Old Jun 1, 2009 | 12:02 PM
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Default Re: Cutting Performance Springs

Originally Posted by PatrickGSR94
Youll be fine. Just do it right. Keep the spring wet while cutting, and be sure to spray some paint on the end so it doesn't rust. Cutting half a coil off the spring will only raise the spring rate a few pounds per inch. Illuminas should still handle them just fine.

Be sure your bump stops are cut in half, but don't run with less than half of a stock bump stop.
this is how i would do it
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Old Jun 1, 2009 | 12:13 PM
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Default Re: Cutting Performance Springs

Originally Posted by TunerN00b
Remove the lower brake line bracket from the shock.
Insert shock into fork, thread pinch bolt in slightly (not tight).
Use large screwdriver / prybar to wedge the fork open slightly and force the shock further down into the fork. Seat it all the way down to where the brake bracket would have been had you not removed it.
Tighten fork bolt to spec.

Should be good for something around a 1/2" drop in the front.
I'm not 100% sure but I think the brake line bracket on most aftermarket shocks is welded on. Koni Sports are one of the few that require you to reuse the OE shock bracket, which is not welded on.
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Old Jun 1, 2009 | 02:08 PM
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Default Re: Cutting Performance Springs

Originally Posted by PatrickGSR94
I'm not 100% sure but I think the brake line bracket on most aftermarket shocks is welded on. Koni Sports are one of the few that require you to reuse the OE shock bracket, which is not welded on.
Interesting point. I was just answering the question of "what is the pinch fork mod" without concern over the actual shocks being used.

And a welded on brake line bracket is nothing a BFH or a Dremel couldn't correct (I think).

Eh, as a Koni user, my brake lines are held in place by man's greatest invention ever, the all mighty zip tie.
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Old Jun 1, 2009 | 07:38 PM
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Default Re: Cutting Performance Springs

heh no thank you, I prefer having the correct brake line brackets in place. Something about zip ties near moving parts like that just doesn't sit will with me.

Although I've had zip ties holding up the front ends of my 94 fender liners ever since I put the 98+ bumper on back in 2004. I've been too lazy/cheap to get the correct 98+ fender liners to mate up correctly with the bumper.
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Old Jun 2, 2009 | 05:55 AM
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Default Re: Cutting Performance Springs

I think it is better to buy a new coilover




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