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2013-14 Shelby GT500
Solid differential spacer results
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<blockquote data-quote="NIXDSG" data-source="post: 15072062" data-attributes="member: 145568"><p>So I did the whole thing this year:</p><p> - welded the tubes to center section</p><p> - 9" ends</p><p> - Moser axles</p><p> - traction lock (removed torsen)</p><p> - welded the BMR lower relocation brackets</p><p> - BMR adjustable LCA</p><p> - BMR upper bracket and adjustable upper</p><p> - 3.73 gears</p><p> - '12 caliper brackets</p><p> - 15x10 WELD RTS </p><p> - set backlash at .008"</p><p> - pinion preload perfect in the middle of the spec range</p><p>The first 400 miles were street driving with DR tires. All good, no whine. Was kind boring as it tracked extremely straight (a little boring, actually).</p><p>Bolted on the 15x10's with MT ET Street Radial and headed to the track. First time ever with good tires so still learning. I did my first 1.80 60', I know slow but first time with good tires and doing a "launch". The next day I had gear whine. So...</p><p></p><p>Took the rear apart, backlash opened up to .014". Pattern was perfect.</p><p>Ordered up a Yukon solid pinion spacer, installed and set backlash back to .008. Noisy! Took it apart and inspected bearings closer. Carrier bearing races had a little frosting on the cups. The large pinion looked bad, had "sparkles" all over the cup. Not pitting, just little spots all over the running surface. The rollers had lines around, you could just feel them with your finger nail. So, all new bearings, seal, and pinion nut ($350). Install with .009" backlash. Still whines.</p><p></p><p>Checked pinion angle, 50 times to make sure. -1.0 degrees.</p><p>Remove BMR LRA and replace the rubber stockers. Still whiny noisy sum bich.</p><p></p><p>So, tomorrow I'm going to drive it. I will turn up the radio. Consider an OR H pipe</p><p>Investigating a 9".</p><p></p><p>NIXDSG</p></blockquote><p></p>
[QUOTE="NIXDSG, post: 15072062, member: 145568"] So I did the whole thing this year: - welded the tubes to center section - 9" ends - Moser axles - traction lock (removed torsen) - welded the BMR lower relocation brackets - BMR adjustable LCA - BMR upper bracket and adjustable upper - 3.73 gears - '12 caliper brackets - 15x10 WELD RTS - set backlash at .008" - pinion preload perfect in the middle of the spec range The first 400 miles were street driving with DR tires. All good, no whine. Was kind boring as it tracked extremely straight (a little boring, actually). Bolted on the 15x10's with MT ET Street Radial and headed to the track. First time ever with good tires so still learning. I did my first 1.80 60', I know slow but first time with good tires and doing a "launch". The next day I had gear whine. So... Took the rear apart, backlash opened up to .014". Pattern was perfect. Ordered up a Yukon solid pinion spacer, installed and set backlash back to .008. Noisy! Took it apart and inspected bearings closer. Carrier bearing races had a little frosting on the cups. The large pinion looked bad, had "sparkles" all over the cup. Not pitting, just little spots all over the running surface. The rollers had lines around, you could just feel them with your finger nail. So, all new bearings, seal, and pinion nut ($350). Install with .009" backlash. Still whines. Checked pinion angle, 50 times to make sure. -1.0 degrees. Remove BMR LRA and replace the rubber stockers. Still whiny noisy sum bich. So, tomorrow I'm going to drive it. I will turn up the radio. Consider an OR H pipe Investigating a 9". NIXDSG [/QUOTE]
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Solid differential spacer results
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