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Kenodog
Joined: 25 Jun 2003
Posts: 2669
Location: Vancouver,B.C.
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 Posted: Sun Feb 24, 2019 4:16 pm Post subject: Elephant Racing |
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Has anyone here ever used the Elephant Racing Quick Change spring plate splined hubs before ?
https://www.elephantracing.com/porsche/944/quickchange-spring-plates-for-944/
Lee
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
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2024 KLX300
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area
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| Posted: Mon Feb 25, 2019 2:14 am Post subject: |
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If those work with my 924 disc brake setup, I'd definitely put them on for easy weight balancing. I ran something similar on my 911 race car but they looked a bit different.
A possible issue is that the big bolt/nut combo is right at the inner tire wall.
Anyone tried them on their cars?
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Mon Feb 25, 2019 3:04 am Post subject: |
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If you are planning on pulling and re indexing the torsion bars you may need to cut some holes on your sills. Like the idea of easier spring plate adjustment, but it needs to be adjustable with the tyres on the car when corner weighting
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area
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| Posted: Mon Feb 25, 2019 7:56 am Post subject: |
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The vertical bolt is the weight jacking adjustment. Set your car on scales and use that bolt to adjust ride height/corner weight.
Index it once when you change the torsion bar and then fine tune weight with the vertical bolt.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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Cedric
Joined: 27 Aug 2004
Posts: 2806
Location: Sweden
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| Posted: Tue Feb 26, 2019 2:09 am Post subject: |
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A little bit over the top to have those expensive quick change bars and spring plates. Could get you a nice set of coil overs 
When i installed my 28mm bars I just set the correct height and never had i appart since. the ride hide adjustment on the stock arms are large enough for me. Although its a bit of a pain to work with, this adjuster looks much easier.
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1980 924 Turbo
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area
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| Posted: Tue Feb 26, 2019 4:20 am Post subject: |
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Agreed. But I'm not allowed to run coil overs in the rear where my car is classed. Also agree that a proper index initially and the factory adjusters does presently work for me - but it's a pain to adjust them.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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924-76
Joined: 05 Jun 2006
Posts: 1489
Location: Ontario, Canada
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| Posted: Tue Feb 26, 2019 4:34 pm Post subject: |
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| Carrera RSR wrote: | | If you are planning on pulling and re indexing the torsion bars you may need to cut some holes on your sills. |
+1
Also, how do you release the pre-load tension?
Why would you need to change your torsion bars so often that you would need this?
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Tue Feb 26, 2019 7:25 pm Post subject: |
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| 924-76 wrote: | | Why would you need to change your torsion bars so often that you would need this? |
Racing only changing ride height and chassis stiffness for differing tracks......
For fast road and track days you tend to fit and forget until the next chassis check over, realignment and corner weighting session. That was 4yrs ago for me and urgently needed again.
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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924-76
Joined: 05 Jun 2006
Posts: 1489
Location: Ontario, Canada
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| Posted: Tue Feb 26, 2019 9:23 pm Post subject: |
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| Carrera RSR wrote: | | Racing only changing ride height...... |
As long as you also have front coil over to allow you to quickly adjust the front as well.
| Carrera RSR wrote: | | ...chassis stiffness for differing tracks...... |
That is the part that worry me, my limited understanding of suspension set up tells me that the front spring rate needs to match the rear spring rate. So you would need to change the front coil as well; why would you this at the track?
I still don't see how you would release the pre-load on the torsion bar?
Not trying to start an argument, just trying to understand.
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP |
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924RACR
Joined: 29 Jul 2001
Posts: 9064
Location: Royal Oak, MI, USA
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| Posted: Tue Feb 26, 2019 10:35 pm Post subject: |
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I don't find a meaningful reason to change them; put in the stiffest you can get and rock out. We run 36's IIRC - it has been maybe 18 years since I put 'em in there.
As for setup - that needs to be AT LEAST yearly. We'd check every weekend or two on the 924 (the prototype gets it EVERY time)...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Cedric
Joined: 27 Aug 2004
Posts: 2806
Location: Sweden
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| Posted: Tue Feb 26, 2019 11:04 pm Post subject: |
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To change spring balance the adjustable anti sway bar is there for you, and it works sooo good, and its takes 5min to do an adjustment. Then you can dial in perfect balance regardless of tyres, track condition etc
Setting corner balance on the other hand, massive pain in the bum with the std stuff, but it is at least possible. We should be grateful that we have fully adjustable rear and front suspension, its a rare sight
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1980 924 Turbo
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924RACR
Joined: 29 Jul 2001
Posts: 9064
Location: Royal Oak, MI, USA
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| Posted: Wed Feb 27, 2019 1:27 am Post subject: |
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| Cédric wrote: | | Setting corner balance on the other hand, massive pain in the bum with the std stuff, but it is at least possible. We should be grateful that we have fully adjustable rear and front suspension, its a rare sight |
Agreed on all counts!!
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area
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| Posted: Wed Feb 27, 2019 2:23 am Post subject: |
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I do have coil overs in the front and have changed springs several times to dial in the handling. As Vaughan says, I have the biggest MFers I could find in the rear, installed once. Different tracks require ride height changes (such as a high speed banked oval - e.g. needing higher right side at Charlotte).
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Wed Feb 27, 2019 5:13 am Post subject: |
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| 924-76 wrote: | | Carrera RSR wrote: | | Racing only changing ride height...... |
As long as you also have front coil over to allow you to quickly adjust the front as well.
| Carrera RSR wrote: | | ...chassis stiffness for differing tracks...... |
That is the part that worry me, my limited understanding of suspension set up tells me that the front spring rate needs to match the rear spring rate. So you would need to change the front coil as well; why would you this at the track?
I still don't see how you would release the pre-load on the torsion bar?
Not trying to start an argument, just trying to understand. |
Ride height changes not torsion bar swaps. Its easy to reindex ride height trackside.........using torsion bars and coilovers
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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