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Location:
Canberra ACT
Registered:
November 2002
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Rear Suspension in GT4
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Wed, 18 May 2005 10:47
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Just wondering if anyone has replaced the rose joints in the rear suspension on a GT4. Mine are stuffed and it is causing a scary amount of rear wheel play in my Group A.
Any idea of the cost? I am planning to replace the inner ones first and then the outer ones only if the play is still evident. I understand that these can only be sourced from Toyota?
Any advice?
Thanks.
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Thu, 19 May 2005 01:43
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I would be interested if you can swap them out. We both suffer the same fate...the rose joints flog out and in a rally car, it doesn't take that long.
My rally car currently has about 8mm play or more.
As best we can determine, the joints aren't easily replaceable, and for the TTR boys in CBR, it's easier to fit a new upright...that is not the cheapest solution for me (or you presumeably).
I've been hanging around his skip to see if he's chucking any uprights out, but most of them also have the same problem.
Let me know if you get a good answer on this one, as I'll be trying to do the same.
M
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Thu, 19 May 2005 02:49
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Always happy to share any information that I get.
My suspension guy said that most of my play was in the inner joints which can be replaced (being $200-$300 each). For the outer joints apparently you have to buy the whole tower, which is obviously much more expensive.
It is making the car handle likt sh@t on the highway, so needs to be fixed. Can't imagine what it would be like in a rally car - probably less noticable on dirt I suppose 
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Location:
Brisbane, Queensland
Registered:
January 2004
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Re: Rear Suspension in GT4
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Thu, 19 May 2005 08:27
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forgive me for asking, but which joint is it we are talking about there?
????
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Location:
Colac, Victoria
Registered:
May 2002
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Re: Rear Suspension in GT4
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Thu, 19 May 2005 08:45
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* listens keenly with interest *
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Thu, 19 May 2005 09:08
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I *think* it is the 42304/42305 on that diagram. It is the part that connects to the main suspension arm. Suspension guy tried to point it out but I didn't get right under there to look.
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Sat, 21 May 2005 08:39
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Yep Matty's right...within the upright (42304 and 42305 in the diagram) there's rose joints inside...pressed into the cast iron.
They flog out...like most rose joints do, and the two that handle the lateral links mean that the rear toe is hopelessly ineffective...
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Location:
Brisbane, Queensland
Registered:
January 2004
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Re: Rear Suspension in GT4
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Sat, 21 May 2005 09:28
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Hrrrm, thats a bit of a catch. Cause either way, its gonna cost a bit to fix em.
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Sat, 21 May 2005 10:37
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Yep Lance...rose joints are hard to replace and the $$$ match.
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Location:
Colac, Victoria
Registered:
May 2002
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Re: Rear Suspension in GT4
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Sat, 21 May 2005 11:16
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a little off topicc but i have thew whole rear end hub , hub mount , plate, disc and calipers now from a st205 - Anyone know if the whole lot can be swapped over - , or just the rotor and caliper like normally done
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Location:
Brisbane
Registered:
September 2004
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Location:
Canberra ACT
Registered:
November 2002
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Location:
Brisbane, Queensland
Registered:
January 2004
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Re: Rear Suspension in GT4
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Sun, 29 May 2005 09:32
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I just found this.... coudl save a bit of cost for those that don't want an entire new hub assembly.
http://www.gtfours.co.uk/
goto How to.../Suspension.../Change rear hub bushes
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Sun, 29 May 2005 22:09
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Matty...$200 isn't too bad actually...it's just a pain you've got to put in new bearings at the same time...that gets a little expensive.
Lance...this is the go...and the link to the Supra bush part number is quite valuable info too...cheers for this.
Not sure about the nolathane alternative...the standard joint is a spherical...if replaced with nolathane, then the lateral movement wouldn't be too good for the bush I suspect?
M
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Location:
Brisbane, Queensland
Registered:
January 2004
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Re: Rear Suspension in GT4
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Mon, 30 May 2005 00:29
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Any improvement over what you have now has gotta be better then nothing...
Matt: Check your pm RE CLG's parts.
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Mon, 30 May 2005 04:55
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PM replied thanks...agreed on the improvements...those nolathane bushes would be a shirtload cheaper than either the Toyota bush or the factory hub.
M
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Mon, 30 May 2005 07:00
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| -==L=a=N=c=E==- wrote on Mon, 30 May 2005 10:29 |
Matt: Check your pm RE CLG's parts.
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Share share!! Is there a cheaper better bush I should be getting instead of Toyota ones?
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Location:
Brisbane, Queensland
Registered:
January 2004
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Re: Rear Suspension in GT4
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Mon, 30 May 2005 08:34
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| Matty P wrote on Mon, 30 May 2005 17:00 |
| -==L=a=N=c=E==- wrote on Mon, 30 May 2005 10:29 |
Matt: Check your pm RE CLG's parts.
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Share share!! Is there a cheaper better bush I should be getting instead of Toyota ones?
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Totally irrelvent to what is being said here... Your not missing anything 
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Wed, 01 June 2005 22:30
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Knuckle came with the necessary bushes, but not the wheel bearings. More $$$ 
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Wed, 01 June 2005 22:59
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Matty,
Like I said on Monday 
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Matty...$200 isn't too bad actually...it's just a pain you've got to put in new bearings at the same time...that gets a little expensive.
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Location:
Brisbane
Registered:
September 2004
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Re: Rear Suspension in GT4
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Thu, 02 June 2005 02:45
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Oh damn, thats a bit of bugger there dude. hopefully the knuckle will solve your problem. How much were you quoted for the wheel bearings mate?
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Thu, 02 June 2005 03:46
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| dynomatt wrote on Thu, 02 June 2005 08:59 |
Matty,
Like I said on Monday
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Matty...$200 isn't too bad actually...it's just a pain you've got to put in new bearings at the same time...that gets a little expensive.
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So you did! Sorry mate 
I'll updated once the bill comes in for the bearings, fitting etc..
This issue would effect the majority of GT4 owners I think, because my car has quite low kms for it's age. If the rear suspension is this bad after 140,000kms the ones closer to 200,000kms must be getting pretty bad!
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Location:
Brisbane
Registered:
May 2004
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Re: Rear Suspension in GT4
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Thu, 02 June 2005 04:20
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And the wheel bearings are a big problem too...we fixed it by skimming the surface of the bearing so that you can do up the axle nut a lot tighter.
Although, I've done 3 rallies since I had my wheel bearings done (like maybe 400km competitive and probably 600km overall) and mine are starting to go again!!!
M
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Toymods Vice President
Location:
Sydney
Registered:
May 2002
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Re: Rear Suspension in GT4
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Thu, 02 June 2005 05:37
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Are we talking about the bearing that is actually in the arm here?
If so the AW11 has the same thing in one of the rear arms. My plan for sorting it out when I get around to it/need to is to replace it with a rose joint.
The arm is just a fairly light tube so my plan is to find a rose joint with a bearing large enough to allow the bolt to go through it and with a threaded shaft from the body of the joint. Then cut the arm off at a reasonable length. Get a boss turned up that has an outer diameter the same as the inner diameter of the arm for about 2 inches then the outer diameter for half an inch, with a hole down the middle that we can tap for the threaded shaft on the rose joint. Insert the boss into the arm and weld it around the seem. Tap the hole in the boss. Screw a nut onto the shaft of the rose joint then screw the rose joint into the boss.
If needed turn up a couple of conical spacers to keep the rose joint centred in the bracket. This gives the advantage of reasonably affordable replacement for the bearing going forward and also adjustability of the arm if needed. The problems that I can se with it are, getting it past an engineer/scrutineering. Getting a rose joint that has a large enough bore for the bolt but a small enough outer size to fit in the bracket.
Not the most simple solution but I reckon you could do it for less than the cost of a new knuckle.
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Registered:
February 2005
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Re: Rear Suspension in GT4
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Thu, 02 June 2005 05:56
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what material is this joint/bearing made of?
i havent seen it for real, but from the partlist pictures, it seems to be the standard joint that many newer yotas having problems with.
if its a regular joint, i know there is high performance joints to get in all sizes and dimensions, they costs about the same as joints from a toyota dealer, but they last long, actually i never heard of anyone that had to change them again, but they were not in rally cars tho.
i dont know who sells them tho, and last time i saw anyone for sale, i found them while looking for joints for a beamer.
i have also seen heavy duty wheelbearings, but where to find them is another question. maybe a bearing specialist can help?
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Location:
Canberra ACT
Registered:
November 2002
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Re: Rear Suspension in GT4
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Wed, 08 June 2005 11:29
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For those of you playing at home, the total cost was $850 including bearings, fitting etc..
The result? Very little play in the rear, only on one side. May need a new control arm to get rid of remaining play.
Not as bad as it might have been
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