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Old 07-02-2012, 08:20 AM   #1
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TO CUT OR NOT!!!

I have a set of H&R 35mm lowering springs, which translates to a 1.4" drop all the way around. the issue is that the guy i bought them from had the same set up as i have with 22" rims 9.5 frontand 10.5 rears, but he says that his install guy didnt cut the bump stops on his struts. I went on the forum and looked for DIY of H&R springs but no joy!! So i pulled everyting from Pdat, Ebach, and BMR, installs, and all of them say cut the bump stop 1" off. So i need to know if anyone of you guys did the same install height, or install for that matter without cutting the bump stop. And ultimatly what is the right answer from the experts, to cut or not?
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Old 07-02-2012, 08:37 AM   #2
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I installed Eibachs on my car, and didn't touch the bump stops. Not necessary, and I think if you go to the Eibach website, or look at the instructions, it will tell you that you do not need to cut them.
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Old 07-02-2012, 08:45 AM   #3
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My BMR spring instructions stated NOT to cut the bumpstops. I even checked their site and it said not to cut them. Even the Eibachs I had said not to cut.
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Old 07-02-2012, 09:53 AM   #4
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Quote:
Originally Posted by robsls3 View Post
My BMR spring instructions stated NOT to cut the bumpstops. I even checked their site and it said not to cut them. Even the Eibachs I had said not to cut.

Ok you and the other guy above me are right. This is where i go that info from. Scroll to the bottom of the site and you see the cutting part.

http://www.planetlsx.com/tech/How_To...010_Camaro/131
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Old 07-02-2012, 10:01 AM   #5
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Yeah some springs require you cut but not the BMR or eibachs.
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Old 07-02-2012, 10:59 AM   #6
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The only ones I've seen that require the cut are Pfadts. I had Hotchkis for a while and no cutting with them either....then again those were 1".
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Old 07-02-2012, 11:01 AM   #7
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We would recommend following the instructions as published by your spring manufacturer.

With our springs we do suggest that you trim your bump stops, it's extremely simple and has no adverse effects to handling or ride comfort. When you lower your car you're placing your shocks in a different portion of their stroke, and by removing some material from the bump stop you reduce the likelihood of riding on the bump stops over big hits. This ultimately makes the shock more functional for the ride height your trying to achieve.

Again, if you have H&R springs follow the instructions posted by H&R.

Last edited by PfadtRacing; 07-02-2012 at 04:32 PM.
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Old 07-16-2012, 11:18 PM   #8
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I installed H&R springs and cut the bump stops..the car rides awesome and does not bottom out....
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Old 08-19-2012, 08:36 PM   #9
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Quote:
Originally Posted by WONSS View Post
I installed H&R springs and cut the bump stops..the car rides awesome and does not bottom out....
That's an insane drop. You running the H&R 1.4's or 1.8's?? I'm getting the BMR 1.4's and if this is how my car is gonna look, then I am one happy camper lol
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Old 08-19-2012, 09:28 PM   #10
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Quote:
Originally Posted by Secret Squirrel View Post
I installed Eibachs on my car, and didn't touch the bump stops. Not necessary, and I think if you go to the Eibach website, or look at the instructions, it will tell you that you do not need to cut them.
+1

I have Eibach's, instrustions say DO NOT cut.
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Old 08-20-2012, 09:16 PM   #11
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they are the 1.7 and 1.8's
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Old 08-21-2012, 10:32 PM   #12
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Originally Posted by WONSS View Post
they are the 1.7 and 1.8's

can you post some more pics? Want to see that drop? Any alignment issues?
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Old 08-21-2012, 10:37 PM   #13
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Have the H&R 1.4" and did not cut. No issues after 3 years, YET!
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Old 08-21-2012, 10:47 PM   #14
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Cut one inch off
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Old 08-30-2012, 08:59 AM   #15
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Follow instructions because spring rates can be drastically different between manufacturers. Good luck
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Old 08-30-2012, 09:14 AM   #16
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I was just about to post almost exactly this, so.....

Quote:
Originally Posted by PfadtRacing View Post
We would recommend following the instructions as published by your spring manufacturer.

With our springs we do suggest that you trim your bump stops, it's extremely simple and has no adverse effects to handling or ride comfort. When you lower your car you're placing your shocks in a different portion of their stroke, and by removing some material from the bump stop you reduce the likelihood of riding on the bump stops over big hits. This ultimately makes the shock more functional for the ride height your trying to achieve.

Again, if you have H&R springs follow the instructions posted by H&R.
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