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Old 11-08-2003, 14:55   #1 (permalink)
NZ
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Balancing the Tailshaft

Anyone ever had this done before? What did it cost?

Reason I ask my car gets bad vibration/rumble at 195km/hr. Pretty sure its the tailshaft.

Its an EB 5.0 manual with the stock 3.27 diff. Never had it that fast with the auto. The box was new when we put it in so I dont think there hould be any problems there.

Has anone ever driven with the tailshaft doing this? I probably did 20 seconds with it rumbling because I was trying to workout what the noise was. Wouldnt have been good if it snapped. The VT that was trying to keep up woulda got a mouth full of tailshaft.
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Old 11-08-2003, 15:06   #2 (permalink)
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Re: Balancing the Tailshaft

I think you are on the money there; but if you are going to be doing those type of speeds shouldnt you look for a one piece tailshaft?

correct me if i am wrong.

ben
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Old 11-08-2003, 15:47   #3 (permalink)
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Re: Balancing the Tailshaft

It should be a one piece tailshaft already. Balancing cost me $100 last time I had it done, $140 for a mate with a shortening.

Check the unis aren't fragged first. They really are a case of out a site, out a mind.
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Old 11-08-2003, 19:41   #4 (permalink)
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Re: Balancing the Tailshaft

the alluminium shafts in the V8s have the balance weights glued on and they sometimes come off. Also because the shafts are so long, they flex, they do cause problems at high speed and I have been cautioned that they can break at high speed. Suggest you see advice at a large driveshaft joint, a thick walled
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Old 11-08-2003, 19:43   #5 (permalink)
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Re: Balancing the Tailshaft

Dude...
I'd be getting a tailshaft loop before anything, at that speed if your shaft brakes at the front uni, it could catapoult you into deep space.
Just looking after your best intrest (your life!).
Check your pinion angle too!
I thought these cars were speed limited to 180kmh. I know theres ways around that though.
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Old 11-08-2003, 20:15   #6 (permalink)
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Re: Balancing the Tailshaft

Only the LWB cars are speed limited in 5.0 (eb-ed)
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Old 11-08-2003, 20:18   #7 (permalink)
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Re: Balancing the Tailshaft

Im guessing when I cnhange the diff ratio itll become more of a problem at a lower speed. Say I used a 3.45 itll become noticible sooner. :/
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Old 11-08-2003, 20:49   #8 (permalink)
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Re: Balancing the Tailshaft

Is your car lowered?
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Old 11-08-2003, 23:35   #9 (permalink)
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Re: Balancing the Tailshaft

it can be anything from a little wear in you uni's to a slight inbalance in the wheel weights, or even a small egg in the actual rubber of your tyre
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Old 11-09-2003, 01:10   #10 (permalink)
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Re: Balancing the Tailshaft

Yeah the car is slightly lowered. Its got EL XR8 Springs.
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