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SVT Shelby GT500
Has anyone killed the AC compressor with a OD crank pulley?
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<blockquote data-quote="mdoan" data-source="post: 16443773" data-attributes="member: 44126"><p>I trashed the ac clutch bearing with a combination of too much belt tension and a failing harmonic balancer. That’s the theory anyway since I know both conditions were present; it could’ve just failed. Not knowing your full pulley setup the overdrive lower should reduce tension (bearing load) not increase it. It’s possible you didn’t get the overdrive completely pressed on flush with the front main seal, which would place additional load on adjacent pullies, including ac. But I can’t think of any other reason the overdrive would’ve contributed; maybe shortened the life a bit since accessories are designed to spin at a specific speed.</p><p></p><p>I’d argue you might just need a new ac clutch. You can buy a kit from Ford that either includes 1) the clutch and clutch coil, or 2) the whole assembly including compressor. Those were the only options for a 2010 anyway. The first option is 300-400 cheaper or better IIRC. I think it was around 250 bucks or so locally, so cheaper from Tasca or autonation white bear lake.</p><p></p><p>The coil rarely fails - good thing ‘cause it’s held in with 3 Phillips screws and one of them is practically guaranteed to strip on you - so just use the clutch and have a spare coil on the shelf.</p><p></p><p>Edit: make sure you read Tob’s 2.9 install guide on this forum and/or pm me when you get ready to install that 2.9. It’s a major PITA and knowing a few tricks ahead of time will save you a lot of heartache.</p></blockquote><p></p>
[QUOTE="mdoan, post: 16443773, member: 44126"] I trashed the ac clutch bearing with a combination of too much belt tension and a failing harmonic balancer. That’s the theory anyway since I know both conditions were present; it could’ve just failed. Not knowing your full pulley setup the overdrive lower should reduce tension (bearing load) not increase it. It’s possible you didn’t get the overdrive completely pressed on flush with the front main seal, which would place additional load on adjacent pullies, including ac. But I can’t think of any other reason the overdrive would’ve contributed; maybe shortened the life a bit since accessories are designed to spin at a specific speed. I’d argue you might just need a new ac clutch. You can buy a kit from Ford that either includes 1) the clutch and clutch coil, or 2) the whole assembly including compressor. Those were the only options for a 2010 anyway. The first option is 300-400 cheaper or better IIRC. I think it was around 250 bucks or so locally, so cheaper from Tasca or autonation white bear lake. The coil rarely fails - good thing ‘cause it’s held in with 3 Phillips screws and one of them is practically guaranteed to strip on you - so just use the clutch and have a spare coil on the shelf. Edit: make sure you read Tob’s 2.9 install guide on this forum and/or pm me when you get ready to install that 2.9. It’s a major PITA and knowing a few tricks ahead of time will save you a lot of heartache. [/QUOTE]
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Has anyone killed the AC compressor with a OD crank pulley?
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