Fitting JR head to JX Block
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Mick.source
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Fitting JR head to JX Block
Hi, can anybody give me details on how to covert the JR (hydraulic lifter) to a JX block that had mechanical lifters. I know that you have to block up the second oil hole in the JR head but are there any other changes ie what gasket do i use, is the original oil pump substantial enough for the hydraulic lifters all information would be appreciated, thanks.