Rebel Racing Coil Overs |
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Rebel Racing Coil Overs |
Biggles |
Oct 23 2019, 11:37 AM
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#1
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Member Group: Members Posts: 197 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
I’ve bought a set of rebel racing adjustable perches to go over my rear bilstein dampers.
Unfortunately, for the duel rate springs I have (tender and main spring), the isolator collar (between the two springs) ID at 54mm is just too small to go over the OD of the threaded tube, meaning I have to go up in spring size to 60mm ID I think Question: what ID springs do people use with this Rebel Racing set up and do you find the springs rub on the threaded tube ? See below Thanks, Chris Attached thumbnail(s) |
jonferns |
Oct 23 2019, 11:59 AM
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#2
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Advanced Member Group: Members Posts: 2,081 Joined: 29-March 07 From: New Jersey Member No.: 7,631 Region Association: North East States |
I use 2.25” ID springs that came with the coil over kit from Rebel. No issues with rubbing on the threaded collar
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sixnotfour |
Oct 23 2019, 12:09 PM
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#3
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914 Wizard Group: Members Posts: 10,598 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
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burton73 |
Oct 23 2019, 12:51 PM
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#4
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burton73 Group: Members Posts: 3,659 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
I can not give you my specks but this is what I have on the rear of 41. Helper springs as well
Bob B |
wndsrfr |
Oct 23 2019, 01:22 PM
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#5
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Senior Member Group: Members Posts: 1,436 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
I’ve bought a set of rebel racing adjustable perches to go over my rear bilstein dampers. Unfortunately, for the duel rate springs I have (tender and main spring), the isolator collar (between the two springs) ID at 54mm is just too small to go over the OD of the threaded tube, meaning I have to go up in spring size to 60mm ID I think Question: what ID springs do people use with this Rebel Racing set up and do you find the springs rub on the threaded tube ? See below Thanks, Chris Flip it over...put the helper spring on top above the threaded tube... |
sixnotfour |
Oct 23 2019, 01:29 PM
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#6
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914 Wizard Group: Members Posts: 10,598 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
Or try this if the hat slides done the spring will stay seated.. Less friction on the threads ,, will thump if jumped.
Attached image(s) |
Biggles |
Oct 23 2019, 03:17 PM
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#7
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Member Group: Members Posts: 197 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
I’ve bought a set of rebel racing adjustable perches to go over my rear bilstein dampers. Unfortunately, for the duel rate springs I have (tender and main spring), the isolator collar (between the two springs) ID at 54mm is just too small to go over the OD of the threaded tube, meaning I have to go up in spring size to 60mm ID I think Question: what ID springs do people use with this Rebel Racing set up and do you find the springs rub on the threaded tube ? See below Thanks, Chris Flip it over...put the helper spring on top above the threaded tube... that's a good call. I had thought about that, but was thinking that on a big bump, the damper could go up and hit the insulator plate/collar. This is it mocked up. I guess it will also depend on where the adjustable perch starts. Attached thumbnail(s) |
Biggles |
Oct 23 2019, 03:23 PM
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#8
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Member Group: Members Posts: 197 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
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wysri9 |
Oct 24 2019, 02:16 PM
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#9
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Member Group: Members Posts: 199 Joined: 23-August 13 From: Aberdeen, Scotland Member No.: 16,291 Region Association: England |
I am about to install the Rebel Racing Coilovers with 150lb Eibach springs. No helper springs though - can somebody explain the benefit of the helper springs?? Am I missing a trick here?
Thanks Simon |
Dion |
Oct 24 2019, 04:45 PM
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#10
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RN Group: Members Posts: 2,797 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
Found this Simon:
Attached thumbnail(s) |
Larmo63 |
Oct 24 2019, 05:22 PM
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#11
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Advanced Member Group: Members Posts: 4,267 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
When you jack your car up without the helper springs, the mainspring has to re-index and the car's rear springs will either "click" back in or "thump" if you are driving.
Ask me how I know. |
Biggles |
Oct 25 2019, 01:59 AM
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#12
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Member Group: Members Posts: 197 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
I am about to install the Rebel Racing Coilovers with 150lb Eibach springs. No helper springs though - can somebody explain the benefit of the helper springs?? Am I missing a trick here? Thanks Simon The post above explains it pretty much but like a lot of things, it isn’t a case of just putting anything on your car. It also controls frequency as you go over a bump as the suspension unloads. I had to get a spring pro to calculate a duel spring equivalent to my 150lbs progressive, fixed perch, set up. He recommended a 300lbs helper/tender spring (this is an eibach spring which has a 1.75” travel (so the free length is around 3.25” ish) with a 160lbs 9” main spring. But this is on a car with a 3.2 and 915 box so will be heavier. Most people have stiffer springs, but for fast road use I think it’s overkill. The problem with a duel spring set up using the rebel racing system comes when you have to fit the duel perch/isolater plate between the springs when you fit a 2.25” ID spring. The diameter of the perch plate is slightly too small to fit over the threaded tube. I’m ordering a 60mm tender spring + duel perch plate, and hopefully that will be ok to fit over the threaded tube. My main spring is a 2.25” ID but actually measures 60mm so I think I’m going to be ok. Something to bear in mind if you’ve already got a 2.25” ID main spring. I’ll report back, but as I see it, there is a flaw in their design as the tolerance is way too marginal - the movable perch collar should be a larger diameter... PS I also learnt there are different metal compounds for these springs. I was told you need silicone chrome springs, which don’t sag - Eibach are made this way. |
Steve |
Oct 25 2019, 09:01 AM
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#13
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914 Guru Group: Members Posts: 5,698 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
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burton73 |
Oct 25 2019, 05:15 PM
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#14
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burton73 Group: Members Posts: 3,659 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
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burton73 |
Oct 25 2019, 05:16 PM
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#15
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burton73 Group: Members Posts: 3,659 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
PMB
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wndsrfr |
Oct 27 2019, 11:32 AM
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#16
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Senior Member Group: Members Posts: 1,436 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
FWIW I've been running my /6 track car with no helper springs...just zip tied the hat to the top of the spring and it just slides up and down. Over 8000 miles on the track in past five years, no problem.
Attached thumbnail(s) |
wndsrfr |
Oct 27 2019, 11:33 AM
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#17
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Senior Member Group: Members Posts: 1,436 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
Another pic...
Attached thumbnail(s) |
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