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Leaf spring & shudders

Tech Talk for Ford, Mazda, Daihatsu & Makes that currently dont have a home.

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Joined: Sun Nov 02, 2008 10:53 pm
Location: Sydney

Leaf spring & shudders

Post by chugga »

Has anyone had any problems putting new leaf springs with 2'' lift and then get rear end shudders? Mine are only happening at 80k now. I have narrowed the problem down to the drive shaft angles since the lift. I lowered the gearbow mount to compensate but I am really need some advice.
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Post by BundyRumandCoke »

Try putting spacers between the gearbox cross member and the chassis rails. Reduces the tailshaft angle even more. I think mine are 2 x 3/8 plate, so about 3/4 drop.
Mud makes excellent toothpaste.
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Post by chugga »

Thanks. I did that and it works. Does it do any damage to the engine mounts?
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Post by MightyMouse »

Another option might be to space the engine mounts up... same net effect and doesn't sacrifice ground clearance.

However I can't recall if that would create a clearance problem ( mines not standard ) with the bonnet so measure first.
( usual disclaimers )

It seemed like a much better idea when I started it than it does now.
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Post by chugga »

You mean space them down?
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Post by MightyMouse »

No to correct the driveline angle you need to space the two front mounts up - thats equivalent to spacing the rear crossmember down.

The transfer case rear output shaft needs to be more alligned to the diff pinion shaft, although this then disturbs the front drive shaft to diff alignment. As you unlikely to be going fast in 4WD this change in front drive angle is unlikely to give you grief.
( usual disclaimers )

It seemed like a much better idea when I started it than it does now.
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Joined: Sun Nov 02, 2008 10:53 pm
Location: Sydney

Post by chugga »

Thanks ill give it a go :)
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Post by fat496 »

MM how did you go about spacing the mounts up on yours? because if i do that it will help with my pinion angles and get my fan back up a bit closer to the center of the radiator, after i did 2" body lift.
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