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05-17-2011, 04:33 PM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: 427
Posts: 298
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Not Ranked
loose hanging front spring is that correct?
jacked my car up today and noticed that when jacked up the spring just hangs there totally loose it doesn't seem right?
Shouldn't there be some type of suspension stop?
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05-17-2011, 04:39 PM
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CC Member
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Join Date: Feb 2001
Location: BRADENTON,
FL
Cobra Make, Engine: KIRKHAM 427 S/C, SHELBY 427 ALUM. STROKER
Posts: 1,396
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Not Ranked
That's normal.
__________________
"When Injustice becomes Law,
Rebellion becomes Duty." T. Jefferson
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05-17-2011, 04:55 PM
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CC Member
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Join Date: Dec 2001
Cobra Make, Engine: BDR
Posts: 536
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Not Ranked
Yep odd and seems wrong but that is how BDR in their infinite wisdom designed them.
Put it on a two post lift and watch how much travel is in the struts as well....
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05-17-2011, 05:33 PM
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CC Member
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Join Date: Feb 2010
Location: westfield,
ma
Cobra Make, Engine: BDR # 866 Roush 427 SR/TW
Posts: 101
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Not Ranked
Becareful to make sure you line it back up when you lower it. I had mine jacked up once and the guy who lifted it did not put it back down correctly. It was an interesting ride down the road until I figured out what had happened.
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05-17-2011, 06:09 PM
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Senior Club Cobra Member
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Join Date: Feb 2004
Cobra Make, Engine:
Posts: 1,226
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Quote:
Originally Posted by mln385
Yep odd and seems wrong but that is how BDR in their infinite wisdom designed them.
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It may be normal for a BD but that sure is a pizz poor design. If you "catch air", be prepared to crash upon landing.
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05-17-2011, 06:21 PM
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CC Member
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Join Date: Dec 2004
Location: toronto,
ont
Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs
Posts: 562
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I use nylon ties to strap the spring to the coil over hat, then when you drop it back down everything slips nicely back into place without any problems.
Craig
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05-17-2011, 07:11 PM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: 427
Posts: 298
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here is a photo.
Last edited by D111; 05-17-2011 at 07:36 PM..
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05-18-2011, 01:20 AM
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CC Member
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Join Date: Aug 2003
Location: San Diego,
CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
Posts: 727
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This is not an odd design and if you look at a number of performance cars with springs changed to progressive spring rates the height of the relaxed spring is shorter and you get a gap it is not going to leave the car without the strut also leaving. You will see the same thing, including the BMW M3 which the suspension is based on when you add "H&R" type perfomance springs.
If you don't like it, sell it, buy a different car. It might fit you better.
...D111 this is not directed at you.
Last edited by Rwillia4; 05-18-2011 at 04:12 AM..
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05-18-2011, 01:57 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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ALL coil springs should be captive, the spring is WRONG for the shockabsorber travel.
Get the correct springs, or change the shockabsorber to one with less travel.
__________________
Gary
Gold Certified Holden Technician
Last edited by Gaz64; 05-18-2011 at 01:59 AM..
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05-18-2011, 01:59 AM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: 427
Posts: 298
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Quote:
Originally Posted by Rwillia4
This is not an odd design and if you look at a number of performance cars you will see the same thing, including the BMW M3 which the suspension is based on. If you don't like it, sell it, buy a Superformance. It might fit you better.
...D111 this is not directed at you.
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M3 suspension
I wish not so lucky in my BDR a older BMW 325 suspension type. does anyone know if the 325 bmw front suspension is jacked up the spring will hang freely the same way if so then I won't bother doing any modification.
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05-18-2011, 02:04 AM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: 427
Posts: 298
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Quote:
Originally Posted by Rwillia4
If you don't like it, sell it, buy a Superformance. It might fit you better.
...D111 this is not directed at you.
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then who would it be directed at no worries just trying to figure this out.
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05-18-2011, 04:07 AM
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CC Member
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Join Date: Aug 2003
Location: San Diego,
CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
Posts: 727
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Not Ranked
There are other coilover options look here: BMW E36/E46/E90/E92 Suspension - H&R Springs, KW Coilovers, Eibach, TEIN Coilovers, KONI Shocks, TMS & more but I don't think the rears are drop in without some modification for the upper attachement. And the spring rates will be high for the lighter BDR.
And here are some struts if you want shorter travel (the better fix): Turner Motorsport | BMW Suspension Parts
Last edited by Rwillia4; 05-18-2011 at 04:09 AM..
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05-18-2011, 04:14 AM
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CC Member
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Join Date: Aug 2003
Location: San Diego,
CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
Posts: 727
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And buy bumpstops if you are worried about it compressing the other way. Which should be a much bigger worry.
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05-18-2011, 05:47 AM
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CC Member
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Join Date: Dec 2001
Cobra Make, Engine: BDR
Posts: 536
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Quote:
Originally Posted by Rwillia4
This is not an odd design and if you look at a number of performance cars with springs changed to progressive spring rates the height of the relaxed spring is shorter and you get a gap it is not going to leave the car without the strut also leaving. You will see the same thing, including the BMW M3 which the suspension is based on when you add "H&R" type perfomance springs.
If you don't like it, sell it, buy a different car. It might fit you better.
...D111 this is not directed at you.
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Just as you I am entitled to my opinion, as for other car I have them.
Issue with this set up is just like stated in above post, if jacked up and not properly aligned to perch it could be an issue. May not leave the car because it is held in by strut shaft but my thoughts are is it should have some retaining system to keep the springs from free floating and possible moving out of the perch.
I find it odd, you don't we are both entitled to our own thoughts.
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05-18-2011, 05:55 AM
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CC Member
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Join Date: Mar 2010
Location: Williamsburg,
VA
Cobra Make, Engine: SPF #2920 w/ Keith Craft 408
Posts: 250
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Same thing happens to SPF cars. Just keep an eye on it as you lower the car back down. Mine have always slipped back into place.
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05-18-2011, 07:05 AM
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Backdraft Racing Dealer
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Join Date: Dec 2004
Location: North Haven,
CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,121
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Experience with aftermarket suspensions would have you seeing this is the norm. You can cut the wheel hard both ways while moving and they reseat.
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05-18-2011, 07:38 AM
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CC Member
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Join Date: Dec 2004
Location: toronto,
ont
Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs
Posts: 562
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If you strap the coils to the upper hat they will always stay seated & you will not have to worry about them re-seating.
Most hats have a couple of holes in them that allows you to slip a ny-tie through & around the upper coil.
Craig
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05-18-2011, 07:44 AM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
I agree with GAZ64. Many or most of these suspensions do not have droop or bump stops designed in their cars. After reading the tech arcticles for QA-1 shocks I decided I needed to build in some droop stops. Many guys have to resort to stiffer springs without bump stops, which are sometimes hard to design in. There is a picture in my gallery. I tried to insert it here but new insert photo design does not seem to work.
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05-18-2011, 08:25 AM
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Stolen Avitar
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Join Date: Oct 2004
Location: Brunswick,
GA
Cobra Make, Engine: BDR 1311 428PI
Posts: 3,044
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Not Ranked
Quote:
Originally Posted by Wbulk
I agree with GAZ64. Many or most of these suspensions do not have droop or bump stops designed in their cars. After reading the tech arcticles for QA-1 shocks I decided I needed to build in some droop stops. Many guys have to resort to stiffer springs without bump stops, which are sometimes hard to design in. There is a picture in my gallery. I tried to insert it here but new insert photo design does not seem to work.
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