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I installed a double roller timing chain and it seems my ASP underdrive pulley is interfering with the oil pump. Is this right?

April 26, 2017ASP chain double installed interfering Oil pulley roller timing underdrive

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I installed a double roller timing chain and it seems my ASP underdrive pulley is interfering with the oil pump. Is this right?

1 Answer

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Yes, in some circumstances (especially when using a corvette ASP pulley), the ASP pulley will need to be machined for clearance when using a double roller timing chain. The picture on the right illustrates the machining required.