Which SFC's to buy?
05-02-2003, 05:30 PM
#16
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Join Date: Sep 2001
Posts: 223
Originally posted by chesee48
why those are not the DD??
I agree with bolt on/weld on convo...if u get them, i'd for sure have them welded on. But thats just me
why those are not the DD??
I agree with bolt on/weld on convo...if u get them, i'd for sure have them welded on. But thats just me
05-02-2003, 07:08 PM
#17
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Join Date: Apr 2003
Location: Ann Arbor, MI
Posts: 128
Does anyone have any real data to back up these claims? There are so many products on sale it is difficult to differentiate the ones that work versus the perception that they will work.
If bolt ons are junk because there is such an incredible amount of load going thru the SFC that the fastener can not keep the joint tight then why is it that the DD (which is a truss stucture that is much much stiffer) not a good idea? I understand the weight penalty.
If the correct materials and fasteners are used for the bolt-ons there won't be any relative movement between the SFC and the body therefore there should be no difference between a bolt-on and a weld-on. The only reason I argue this point is that I don't want to weld them on my car if I wish to return it to stock in the future and there are a lot of claims with no data. Wonder if SLP has some data they would share showing how much torsional stiffness is increased with their SFC's bolt-on and weld-on. Worth asking...
Brian
If bolt ons are junk because there is such an incredible amount of load going thru the SFC that the fastener can not keep the joint tight then why is it that the DD (which is a truss stucture that is much much stiffer) not a good idea? I understand the weight penalty.
If the correct materials and fasteners are used for the bolt-ons there won't be any relative movement between the SFC and the body therefore there should be no difference between a bolt-on and a weld-on. The only reason I argue this point is that I don't want to weld them on my car if I wish to return it to stock in the future and there are a lot of claims with no data. Wonder if SLP has some data they would share showing how much torsional stiffness is increased with their SFC's bolt-on and weld-on. Worth asking...
Brian
05-02-2003, 10:00 PM
#18
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Join Date: May 2001
Location: Memphis, TN, USA
Posts: 1,122
Originally posted by CPFarhood
First you're wrong about the bolt-ons the holes will elongate, second the reason for not using double diamonds is weight.
First you're wrong about the bolt-ons the holes will elongate, second the reason for not using double diamonds is weight.
Last edited by rncotton; 05-02-2003 at 10:03 PM.
05-03-2003, 05:07 PM
#19
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Join Date: Oct 2002
Location: No Va.
Posts: 355
Originally posted by rncotton
How long does it take? Club members have been running these DD From Spectacle for over 4 years, with track and Auto-X use. ZERO elongation.
How long does it take? Club members have been running these DD From Spectacle for over 4 years, with track and Auto-X use. ZERO elongation.
I haven't made my buy yet but I'm going with bolt-ons.
05-05-2003, 04:19 AM
#20
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Join Date: Aug 2002
Location: USA
Posts: 161
i have bmr tubulars welded in.
that plus the strut tower brace and the car's stiff as heck
i think the dd's weigh too much and the boxed sfc's take away needed ground clearance.
it's all about balance and your needs
that plus the strut tower brace and the car's stiff as heck
i think the dd's weigh too much and the boxed sfc's take away needed ground clearance.
it's all about balance and your needs
05-05-2003, 12:48 PM
#21
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Thread Starter
Join Date: Jan 2003
Location: San Jose, Ca
Posts: 602
Thanks for all the replys. I'm going to go with BMR boxed sfc's. My car isnt lowered so Im not concerned with losing 3/4 of an inch clearance. Thanks again.
Last edited by Aklaim; 05-05-2003 at 01:07 PM.
05-05-2003, 12:53 PM
#22
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Join Date: Sep 2001
Posts: 223
Originally posted by Aklaim
Thanks for all the replys. I'm going to go with BMR boxed sfc's. My car isnt lowerd so Im not concerned with losing 3/4 of an inch clearance. Thanks again.
Thanks for all the replys. I'm going to go with BMR boxed sfc's. My car isnt lowerd so Im not concerned with losing 3/4 of an inch clearance. Thanks again.
05-05-2003, 01:06 PM
#23
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Join Date: Jan 2003
Location: San Jose, Ca
Posts: 602
Yes I know, the suspension has to be loaded for them to install properly. Otherwise they will bind when the car is put back on the ground. I have a friend who runs a speed shop olocally that is going to do the install for me.
05-05-2003, 08:58 PM
#24
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Join Date: May 2001
Location: Memphis, TN, USA
Posts: 1,122
Good choice. If the BMR's are bolt-in, I only have one suggestion. Make sure the LCA bolt is torqued exactly to spec.
Too loose, and the rear will squeak. Too tight and the rear will pop. It's not really hurting anything, but it's annoying.
Too loose, and the rear will squeak. Too tight and the rear will pop. It's not really hurting anything, but it's annoying.
05-06-2003, 06:10 AM
#26
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Join Date: Feb 2003
Location: Port Coquitlam, B.C.
Posts: 2,104
I'm trying to decide which SFC's to buy for my 2002 firehawk with Bilstein suspension. Before this I had a 95 TA but you can't really compare the ride with the Bilsteins. It handles so good around curves I feel I really don't need SFC's but I'll be racing a bit at the track so which ones to get? I'll get a STB at the same time and I'm wondering how much heavier Kenny Brown's DD are to BMR tubulars? I'm lowered just under an inch with the Bilstein suspension so will boxed be a clearance issue on my car? Keep more post coming cause this isn't settled yet. 
05-10-2003, 01:22 PM
#27
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Join Date: May 2003
Location: Sacramento California
Posts: 2
Re: Which SFC's to buy?
Originally posted by Aklaim
I've been given SFC's as a present, only thing I have to do is pick out which ones I want. I know that there are 20 differnt companies that make them, and most of them are of similar design, but which ones are of resonable price, and provide the most strenghtening to the chasis? Any suggestions would be great, especially if you have first hand experiance.
I've been given SFC's as a present, only thing I have to do is pick out which ones I want. I know that there are 20 differnt companies that make them, and most of them are of similar design, but which ones are of resonable price, and provide the most strenghtening to the chasis? Any suggestions would be great, especially if you have first hand experiance.
Why not buy the SLP's in a bolt on fashion and have them welded in. Or just buy the weld on types and save some money. In either case, they will help frame flex which is a good thing.
TTExcyter
05-11-2003, 05:22 PM
#30
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Join Date: Jan 2001
Location: Alexandria, VA
Posts: 775
Originally posted by Y2kPewterSS
I can't seem to find any bolt-ins that aren't the dd type. Does someone make a bolt-in that doesn't weigh and cost a ton?
Thanks
I can't seem to find any bolt-ins that aren't the dd type. Does someone make a bolt-in that doesn't weigh and cost a ton?
Thanks