Caster correction kit - necessary?

Submitted: Thursday, Nov 07, 2013 at 22:24
ThreadID: 105040 Views:4843 Replies:7 FollowUps:6
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Hi folks,

I have finally made a decision to go with the Ridepro Rox heavy duty suspension kit after receiving a very reasonable quote from ORE in Perth. My only concern is that the quote I received from ARB for the Old Man Emu Nitroshock sports system was $600 more expensive but included a caster correction kit. The Ridepro system does not include one of these. When fitted it is going to give me a 2" lift and I have a steel bullbar on the front that has provision for a winch I just haven't installed one yet but will be very soon. From what I have read this should be enough to stop the Cruiser wandering all over the road without a CCK. I have a limited understanding of this though and wonder how necessary it is to include this in the set up? As always advice and opinions greatly appreciated


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Reply By: Ross M - Thursday, Nov 07, 2013 at 23:58

Thursday, Nov 07, 2013 at 23:58
Generally a 2" lift will reduce the normal caster by about 2 degrees, so if you know what it is beforehand you will know approx what it will be when lifted. The CCK may be needed to return the caster to 4 degrees or more.

I'm not a fan of ARB shocks, just an opinion after having three sets on a 60 series which noticeably lost their mass controlling ability after 30,000km. Poor value I reckon. I had the trust in them, not anymore. OnlyGlorified Monroe shocks.
They never leaked and when hand tested they seemed ok, just didn't control the suspension rebounds.

You can buy many other brands and they won't be worse.
AnswerID: 521071

Reply By: Batt's - Friday, Nov 08, 2013 at 01:06

Friday, Nov 08, 2013 at 01:06
Every vehicle is different they won't know if it's required until the lift kit is fitted and if it needs one it should be fitted. I had a GQ patrol with 2" lift and didn't need the caster kit but my neighbours patrol needed one and oddly enough he didn't have a lift kit fitted just standard springs. $600 is a bit expensive when you can get the caster correction bushes for around $100 and a full kit replacing suspension arm bushes front & rear with a 2deg caster correction kit from $200 to $300
AnswerID: 521074

Follow Up By: olcoolone - Friday, Nov 08, 2013 at 08:33

Friday, Nov 08, 2013 at 08:33
If you read his original post the whole suspension kit was $600 more with no mention of the castor kit price by itself.

ARB may be $200-$300 more them the other mob just for the suspension kit alone + castor kit.

ARB correction kit may be $150-$200 + a few hours labour and you're already nudging $400.
FollowupID: 801693

Follow Up By: Batt's - Friday, Nov 08, 2013 at 11:02

Friday, Nov 08, 2013 at 11:02
I'm confused now because I read $600 more expensive BUT included caster correction kit are my eyes playing tricks on me.
FollowupID: 801714

Follow Up By: olcoolone - Friday, Nov 08, 2013 at 12:45

Friday, Nov 08, 2013 at 12:45
Yes you have read right...... BUT you're not comparing apples with apples.

The prices he has been given are from two different suspension places, ARB and Ridepro...... one offering no caster correction kit and the other offering a caster correction kit.

FollowupID: 801723

Follow Up By: Penchy - Friday, Nov 08, 2013 at 13:03

Friday, Nov 08, 2013 at 13:03
that would also be assuming shocks and springs are identical prices
FollowupID: 801724

Reply By: Ross M - Friday, Nov 08, 2013 at 09:09

Friday, Nov 08, 2013 at 09:09
What people don't seem to realize or consider is: the increase in angle of the front arms is the same angle which is lost from the caster angle. Why would you not consider restoring it to correct?

If the lift causes 3 degrees increase in the arms, then the caster is 3 degrees less.

Just because it doesn't seem to be a problem and nothing can be felt isn't an indicator there is nothing wrong. SUDDENLY the situation can change and when conditions are right to cause a severe oscillation or wobble of the front wheels which can be uncontrollable.

To have it within specs is a sensible thing to do.

I love all the stories of "I gotta 3" lift and no correction and I don't have a problem", YET.
AnswerID: 521088

Reply By: Batt's - Friday, Nov 08, 2013 at 11:12

Friday, Nov 08, 2013 at 11:12
Don't let people confuse you by bring 3" lifts into the conversation there a completely different set up and require more modifications. A 2" lift generally requires just springs & shocks but quite often a caster correction kit but not always it's a case by case thing if you go to someone who knows what their doing they will let you know after the kit is fitted
AnswerID: 521102

Reply By: Penchy - Friday, Nov 08, 2013 at 13:06

Friday, Nov 08, 2013 at 13:06
Maybe call a couple of 4wd suspension experts rather than ask opinions on here?
AnswerID: 521110

Follow Up By: Member - Cruiser74 - Tuesday, Nov 12, 2013 at 12:20

Tuesday, Nov 12, 2013 at 12:20
Hi Penchy,

Yes I have done that also but it's also good to get opinions from people who are not after your money! The general consensus is that it's not necessary with a 2" lift but in some cases it ends up being required and therefore easy enough to fit after the fact.
FollowupID: 801990

Follow Up By: Member - Andrew & Jen - Tuesday, Nov 12, 2013 at 14:07

Tuesday, Nov 12, 2013 at 14:07
Hullo Craig
One of the best places to ask is on the LCOOL site.
Many members are very knowledgeable and will give you sound. advice based on years of direct and practical experience.
BTW, it is free to join as a member.
FollowupID: 801992

Reply By: Member - Geoff M (VIC) - Friday, Nov 08, 2013 at 14:50

Friday, Nov 08, 2013 at 14:50
Hi Craig,
I fully agree with the last post - ask around a few reputable suspension outlets and see what they recommend.
Now I got my 2" suspension lift installed by a 4WD outlet that had done many '79 series 'cruisers and they recommended the caster correction kit. I trusted fully the installer and went with their recommendation. My gut feel is to go with the CCK but get some advice by the people who do this for a living.

Good luck! Cheers, Geoff
AnswerID: 521119

Reply By: Member - ROADKING - Monday, Nov 11, 2013 at 16:43

Monday, Nov 11, 2013 at 16:43
Hi Craig,
I have a 76 series wagon to which I fitted a2" tough dog kit to and was told by Opposite Lock that they have never fitted a CCK to any of the 2" conversions only over 2". I found that the car wandered and tram tracked quite noticably and when the camper was on it was really noticablle.
The caster gives the wheels a shopping trolley like effect and if that is reduced it casn cause these type of issues, I went back to Opposite Lock and they said to bring it back and they would put 2 segree bushes in itand that would fix it, not satisfied I went to a steering specialist and had them do awheel alignment and the caster was out 3 degrees so I had then fit them. The vehicle now steers noticably better loaded and empty keeping in mind that the 76 series a fairly light in the steering anyway
Cheers Jim
AnswerID: 521262

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