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T56 issues
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<blockquote data-quote="Roush6018" data-source="post: 16837833" data-attributes="member: 78571"><p>hey my 03 cobra engine was used from ebay. i installed it myself and ran a 2.93 RR pulley. the problem was caused by me or my friend putting the jack right on the oil pan. then on the way home did a long pull and it spun a rod bearing. when i got that crank repaired and reinstalled, about 5k miles later my clutch would not disengage at high rpm. i checked the crankshaft thrust measurement and it was too much. it just rocked front to back. this failure caused my clutch to not work very good, the adjustment would be good, then driving it would not shift. </p><p></p><p>i did try a 3rd time with that crankshaft and it ran good but seemed like slight rod knock at idle due to the crank at min thickness at that point.</p><p></p><p>many days later i have a new crankshaft and a Mcloud twin disc clutch and my engine sounds OK not great (my JBA shorty headers are leaking now) and my clutch works perfect even in the worst traffic. the shifter i use is a steeda tri-ax. i have rebuilt the t-56 with viper spec 5th and 6th gears and i recommend that MOD to the transmission. </p><p></p><p>if you are running a stock alternator, i recommend a j2 alternator.</p></blockquote><p></p>
[QUOTE="Roush6018, post: 16837833, member: 78571"] hey my 03 cobra engine was used from ebay. i installed it myself and ran a 2.93 RR pulley. the problem was caused by me or my friend putting the jack right on the oil pan. then on the way home did a long pull and it spun a rod bearing. when i got that crank repaired and reinstalled, about 5k miles later my clutch would not disengage at high rpm. i checked the crankshaft thrust measurement and it was too much. it just rocked front to back. this failure caused my clutch to not work very good, the adjustment would be good, then driving it would not shift. i did try a 3rd time with that crankshaft and it ran good but seemed like slight rod knock at idle due to the crank at min thickness at that point. many days later i have a new crankshaft and a Mcloud twin disc clutch and my engine sounds OK not great (my JBA shorty headers are leaking now) and my clutch works perfect even in the worst traffic. the shifter i use is a steeda tri-ax. i have rebuilt the t-56 with viper spec 5th and 6th gears and i recommend that MOD to the transmission. if you are running a stock alternator, i recommend a j2 alternator. [/QUOTE]
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