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PB -PC Challenger 2009 - 2014 Covering 2.5 HP diesel

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  #11  
Old 4 Days Ago
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old Jack old Jack is offline
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Originally Posted by Giddyup View Post
I've got Dobinsons mrr shocks and wouldn't get them again. One front strut has a slow oil leak from new, looks like the shaft seal is letting some oil out. One of the rears has been rubbed by the sway bar.

Also have the c43-043v rear springs. Unloaded ride height was a bit over 600mm (too high) and they are firm. Though they are 200kg constant load, which is what you'd want for some sort of comfortable ride. Dobinsons suggested linear rate springs to start off with, though they are too short to be retained (not that Dobinsons cared).

Would like to know how the rate of these compare to the kcrs-23.

Sad that there are more MRR failures, only hoping my Dobinson MT do not suffer an early demise as my Bilstein/Lovells combination had 3 front strut failures in 90,000km.

Spring Data;

C43-043V Free Length 400mm Spring Rate 3.059 to 5.812 kg/mm.
C43-045V Free Length 410mm Spring Rate 4.079 to 6.628 kg/mm.

KCRS-23 Free Length 375mm Spring Rate 3.038 to 4.018 kg/mm.
KCRR-23 Free Length 395mm Spring Rate 3.038 to 4.018 kg/mm.
KCRR-23HD Free Length 395mm Spring Rate 3.661 to 5.179 kg/mm.


OJ.
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2011 PB Base White Auto, Smartbar, Cooper STMaxx LT245/75/16, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .

Last edited by old Jack; 4 Days Ago at 06:23 PM. Reason: HD added to spring spec.
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Giddyup Giddyup is offline
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Quote:
Originally Posted by old Jack View Post
Sad that there are more MRR failures, only hoping my Dobinson MT do not suffer an early demise as my Bilstein/Lovells combination had 3 front strut failures in 90,000km.

Spring Data;

C43-043V Free Length 400mm Spring Rate 3.059 to 5.812 kg/mm.
C43-045V Free Length 410mm Spring Rate 4.079 to 6.628 kg/mm.

KCRS-23 Free Length 375mm Spring Rate 3.038 to 4.018 kg/mm.
KCRR-23 Free Length 395mm Spring Rate 3.038 to 4.018 kg/mm.
KCRR-23 Free Length 395mm Spring Rate 3.661 to 5.179 kg/mm.


OJ.
Great info there OJ. Certainly confirms what it feels like. I suspect that the rate ramps up pretty quickly so the 'compliant part' of the spring is mostly compressed by the weight of the car.
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Originally Posted by Giddyup View Post
Great info there OJ. Certainly confirms what it feels like. I suspect that the rate ramps up pretty quickly so the 'compliant part' of the spring is mostly compressed by the weight of the car.
Without having a coil to measure I can only calculated the load a progressive rate coil will carry for a given compressed length based on a lineal progression in spring rate.

Rear coils on the Challenger, the 1st 3rd of the compression range is taken up by supporting the vehicle's weight and determines the unladen ride height. The 2nd 3rd of the compression range is the normal operating range when the vehicle is unladen or lightly laden. The last 1/3 of the compression range is for when the vehicle is at GVM and when operating in severe conditions. Fitting Peddar 5899 cones will substantially increase the last 3rd compression rates and protect the spring.


OJ.
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2011 PB Base White Auto, Smartbar, Cooper STMaxx LT245/75/16, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .
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Chris1972 Chris1972 is offline
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Thx all for the great info. Has anybody had issues with the OzTec shocks? I’m starting to lean towards them, and will definitely be getting the Pedders cones. Another question? Supercheap Auto sell Kings springs and they are A LOT cheaper than what I’ve been quoted, and that’s before any trade discount.. Are they the same springs?
Chris
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Thx all for the great info. Has anybody had issues with the OzTec shocks? I’m starting to lean towards them, and will definitely be getting the Pedders cones. Another question? Supercheap Auto sell Kings springs and they are A LOT cheaper than what I’ve been quoted, and that’s before any trade discount.. Are they the same springs?
Chris

My Trade pricing on King Coils ranges from $145 to $185 per pair depending on what coil it is. Normal retail/online pricing is $180 to $260 a set and also online pricing may have freight extra!



OJ.
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2011 PB Base White Auto, Smartbar, Cooper STMaxx LT245/75/16, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .
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littleriver littleriver is offline
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Originally Posted by old Jack View Post
My Trade pricing on King Coils ranges from $145 to $185 per pair depending on what coil it is. Normal retail/online pricing is $180 to $260 a set and also online pricing may have freight extra!



OJ.
Found a full set 30mm lift on special fleabay $299.20 delivered
.
KCFR - 55
KCRS - 23



https://www.ebay.com.au/itm/MITSUBIS...UAAOSw4A5YnV7P

...
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2012 PB Challenger LS (Manual) - OZtec shocks front & rear with King Springs (lift 2 inch) , 22 inch front #plate light bar, roof racks & basket, Bridgestone Duelers 697 LT A/T,Dash cam, 2 way radio 80 channel, Ipod connected via glove box usb, Waeco cf50, Garmin gps (with topo), Opticoat + paint protection, Nilrust proofing, Roosystems Ecu Remap

Last edited by littleriver; 2 Days Ago at 01:35 PM.
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