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Guest		#21 Posted : Thursday, 6 October 2005 5:27:20 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		a good quality balancer is essential i'd definately get the diff gears looked at :O www.68hk.oldholden.com there are no stupid questions, only stupid people

trubluhq		#22 Posted : Thursday, 6 October 2005 9:36:50 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		Oooh a 2.78 pinion and 3.08 crown sounds bad to me too ! Should be a set. I'd be after a matched set pronto. Also from LEFT field. Take the care to a DYNO. Strap the car in and take it up to speed. See if you get vibes at 3500. If you do, you know its
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Guest		#23 Posted : Friday, 7 October 2005 1:16:33 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		I may be off on a tangent, but what about disc runouts or wheel bearings. Can you feel the vibration through the steering wheel or on the floor or both etc. Do you get Peddle hop or anything like that ? Cheers Scott

Guest		#24 Posted : Friday, 7 October 2005 4:58:08 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		hi this is my first post in this forum we have a hz 1 tonner tha vibrates the teeth from your mouth at 80k and we'v had two engines and auto boxes and two professionaly balanced tail shafts we have had it since new and still havn't solved the

Guest		#25 Posted : Friday, 7 October 2005 5:38:08 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Read back through the earlier replies an eliminate them one by one. Cheers...Dave

HQLDEN		#26 Posted : Friday, 7 October 2005 7:28:48 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 2/03/2005(UTC) Posts: 40		Thanks Guys for all your suggestions.Some I've already tried and the others I will as time and money permits .JOHNPERTH , I'm running 215x65x14 tyres on GTS rims which have been balanced twice in 2 weeks and I've tried wheels off another car withno luck .
		CHANGE IS INEVITABLE , EXCEPT FROM VENDING MACHINES
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johnperth		#27 Posted : Friday, 7 October 2005 8:42:09 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 1/03/2005(UTC) Posts: 1,991 Was thanked: 2 time(s) in 2 post(s)		There is more to steering than ball joints. You would be surprised what a small bit of looseness in the tie rod ends can do to your steering. Ball joints are more a suspension thing. Pedal hop is not always present.Did they check the rims for out of round
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Guest		#28 Posted : Friday, 7 October 2005 5:25:41 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		do you have new rear bushes? VN Calais, V8 Auto, Blown etc etc. Air con, Electrical, Car audio Master.

HK1837		#29 Posted : Saturday, 8 October 2005 1:26:54 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,740 Thanks: 1 times Was thanked: 516 time(s) in 492 post(s)		quote: Originally posted by johnperth 308 on the ring gear and 278 on the pinion???? sounds like a mix and match which is a n
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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HQLDEN		#30 Posted : Saturday, 8 October 2005 2:49:44 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 2/03/2005(UTC) Posts: 40		Thanks BYRON, I have tried another set of wheels with no change . I will do the Jacking up of the rear trick and see if the axle is bent .Do I need to be particularly careful with it being an LSD?
		CHANGE IS INEVITABLE , EXCEPT FROM VENDING MACHINES
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HK1837		#31 Posted : Saturday, 8 October 2005 4:41:20 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,740 Thanks: 1 times Was thanked: 516 time(s) in 492 post(s)		No. Just make sure you have someone in the car ready to control it if it comes off the trolley jack or stands, and make sure there is heaps of space in front of it so if it does fall off it can be harmlessly stopped. Use 1st gear and idle only.
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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HQLDEN		#32 Posted : Saturday, 8 October 2005 6:11:00 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 2/03/2005(UTC) Posts: 40		Thanks Byron ,I'll give it a try on the weekend if the fords start winning Bathurst.I just bought a 2.78 Salisbury on Ebay to be picked up next weekend . I don't know the condition of it cos the bloke never answered my questions but it might be an alterna
		CHANGE IS INEVITABLE , EXCEPT FROM VENDING MACHINES
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johnperth		#33 Posted : Saturday, 8 October 2005 6:52:49 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 1/03/2005(UTC) Posts: 1,991 Was thanked: 2 time(s) in 2 post(s)		I thought of this today, have you checked all the bodywork for loose panels like the front beaver tray (under the bumper) or other panels? It may be something that only vibrates at that speed because it is too tight or heavy at slower speeds.
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bluHJ		#34 Posted : Saturday, 8 October 2005 7:06:22 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/08/2005(UTC) Posts: 183		Have you lowered the car excessively? This can increase the angle of the tailshaft to the universal joints and cause a vibration. (information came from a Mercedes Benz mechanic) If you have, a quick fix is to raise the back of the gearbox slightly
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Guest		#35 Posted : Saturday, 8 October 2005 7:58:11 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		may as well add some more, you never know which bits can help :) rotational forces being what they are, the pinion angle needs to be slightly offset at rest as under loading of forward movement [of the car] the complete rear axle assembly will rotate s Edited by user Saturday, 8 October 2005 8:03:22 AM(UTC)  | Reason: Not specified

bluHJ		#36 Posted : Saturday, 8 October 2005 4:50:19 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/08/2005(UTC) Posts: 183		You explained it better than me, 70 ute. I only got the info in passing so I couldn't get the specifics but then I remembered a bloke at work about 10 years ago had the problem in his XR6 and Ford fixed it by shimming something in the drivetrain suppor
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HQLDEN		#37 Posted : Monday, 10 October 2005 6:39:23 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 2/03/2005(UTC) Posts: 40		Thanks again guys. I did have the car lowered by fitting 4 new 20 mm lowered springs but this should lower the car the same all round shouldn't it ? Holdens looked good all through Bathurst so I never left the tv to do any more on the car . I have bought
		CHANGE IS INEVITABLE , EXCEPT FROM VENDING MACHINES
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bluHJ		#38 Posted : Monday, 10 October 2005 7:39:27 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/08/2005(UTC) Posts: 183		HQLDEN 20mm is not much to lower a car. It will still alter the angle of the unis as the engine has moved in comparison to the axle. I seriously doubt that this will be your problem due to the small amount lowered. bluHJ
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