help with bilsteins, springs |
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help with bilsteins, springs |
fs096b |
Jun 25 2015, 07:29 PM
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#1
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bob Group: Members Posts: 8 Joined: 12-December 14 From: simi valley, ca. Member No.: 18,216 Region Association: Southern California |
hi, going with bilsteins in rear of 914-6 conversion, bought bilstein hd, and adjustable perches, I have to use 2 1/2 springs, anyone know the length and lbs I should use. should I buy a certain make, just street driving not racing, help please
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Elliot Cannon |
Jun 26 2015, 02:35 PM
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#2
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
I'm not sure what you mean by 2 1/2 springs. I have Bilsteins with 160 pound progressive springs on my car. If you have adjustable spring perches, you should be able to adjust the rear height of the car using any number of spring lengths and poundages. Is poundages a word?? (IMG:style_emoticons/default/biggrin.gif)
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Dave_Darling |
Jun 26 2015, 02:45 PM
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#3
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
I think he means springs that have coils wound with a 2.5" inner diameter.
Not sure of the length, but stock springs were in the 60-90 lb/in range. For a Six conversion, you would not want the lower or middle end of that range. In fact, 100 lb/in springs are sold in many places as "stock" replacements. And higher rates may very well be better for you. But it does depend on the rest of the suspension setup. If you have stock 914 torsion bars up front, and no sway bars at all, then perhaps the 90 or 100s would be a good match. If you have thicker torsion bars (many/most/all 911s used thicker ones than the 914s did) and a good front sway bar, then a higher rate spring would be appropriate. --DD |
Geezer914 |
Jun 27 2015, 07:07 AM
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#4
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Geezer914 Group: Members Posts: 1,417 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States |
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Geezer914 |
Jun 27 2015, 07:09 AM
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#5
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Geezer914 Group: Members Posts: 1,417 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States |
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Steve |
Jun 27 2015, 09:28 AM
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#6
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914 Guru Group: Members Posts: 5,587 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
I bought the rebel racing kit. I figured if Pelican sold it must be good. The springs are 2.25 versus everyone else is selling 2.5" springs. The kit is really light and I went with there 175 lb Eibach springs.
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sled9146 |
Jun 27 2015, 11:41 AM
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#7
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Member Group: Members Posts: 64 Joined: 7-July 06 From: Granite Bay, CA Member No.: 6,395 |
I used Performance Shock Inc. who are located at Infineon Raceway in Sonoma, Ca. They have a ton of experience. You will need to "mock up" your vehicle's expected ride height and then measure from the top of the inside shock tower to the middle of your threaded perch to determine the compressed length.
Your spring rate and spring length will depend several factors and they can guide you in the process. I ended up using 200# in my 6 and it is perfect for my driving needs. |
Chris Pincetich |
Jun 28 2015, 01:17 PM
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#8
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B-) Group: Members Posts: 2,082 Joined: 3-October 05 From: Point Reyes Station, CA Member No.: 4,907 Region Association: Northern California |
175 lb +/-5, 10" long (IMG:style_emoticons/default/shades.gif)
If you want to be stiffer and lower, go with 200 lb and 8" There are more threads in the Paddock. Use the Search (IMG:style_emoticons/default/beerchug.gif) What everyone else said above is true. Results vary. Buy two sets and have fun testing the difference! (IMG:style_emoticons/default/wink.gif) With a little practice, you can swap rear springs in 15 minutes (or less). Spring compressors are not needed. |
campbellcj |
Jun 28 2015, 06:46 PM
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#9
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I can't Re Member Group: Members Posts: 4,545 Joined: 26-December 02 From: Agoura, CA Member No.: 21 Region Association: Southern California |
I'd lean towards the stiffer end of streetability ie 175-200. Of course it is largely subjective and also depends what you have up front and whether you run swaybars on one or both ends. Best to think of the suspension as an integrated system.
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