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Vibrations at 80+
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<blockquote data-quote="cobrajeff96" data-source="post: 1581449" data-attributes="member: 29141"><p>The engine/trans will face down slightly. And of course the opposite with the rear pinion. The less of an angle you have the better, but you don't want zero/zero. Anything between 1 to 2 degrees is fine. I have 1.7 down trans and 1.7 up pinion and it's butter smooth. Key thing is to treat the measurement process as scientific, accounting for consistency and repeatability in your 'tests'. Otherwise, you're fooling yourself.</p><p></p><p>Also a key thing to remember is that if a car sits for more than just a few months, the weight of the car will shove out all the wheel bearing grease and maybe other things too like balljoints. As pretty much everything on a car is connected and load bearing, it wouldn't be crazy to think that for 8 years sitting still the whole entire suspension needs a re-work.</p><p></p><p>If you don't feel any vibes in either the seat, the steering wheel, or both, then maybe this can be overlooked. But certainly the rear axle bearings (I assume this is an SRA) and possibly the diff bearings ought to be inspected as well. Pinion bearing for that matter too, checking for runout I would assume. Usually with worn or out of spec rear gears you will definitely notice some awful sounds. Do the obvious and easy checks too like checking trans fluid level. I mean.....8 years. Damn. It wouldn't be crazy to think that <em>all </em>fluids should be flushed if not already.</p></blockquote><p></p>
[QUOTE="cobrajeff96, post: 1581449, member: 29141"] The engine/trans will face down slightly. And of course the opposite with the rear pinion. The less of an angle you have the better, but you don't want zero/zero. Anything between 1 to 2 degrees is fine. I have 1.7 down trans and 1.7 up pinion and it's butter smooth. Key thing is to treat the measurement process as scientific, accounting for consistency and repeatability in your 'tests'. Otherwise, you're fooling yourself. Also a key thing to remember is that if a car sits for more than just a few months, the weight of the car will shove out all the wheel bearing grease and maybe other things too like balljoints. As pretty much everything on a car is connected and load bearing, it wouldn't be crazy to think that for 8 years sitting still the whole entire suspension needs a re-work. If you don't feel any vibes in either the seat, the steering wheel, or both, then maybe this can be overlooked. But certainly the rear axle bearings (I assume this is an SRA) and possibly the diff bearings ought to be inspected as well. Pinion bearing for that matter too, checking for runout I would assume. Usually with worn or out of spec rear gears you will definitely notice some awful sounds. Do the obvious and easy checks too like checking trans fluid level. I mean.....8 years. Damn. It wouldn't be crazy to think that [I]all [/I]fluids should be flushed if not already. [/QUOTE]
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