What is the size bolt one needs to plug the thermactor holes in the back of E7 heads?
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Yeah, I'm pretty sure they are threaded (thats what Stormwalker told me). I would flip it around, but I dont want to take my valve cover off and replace the gaskets.Originally posted by mnstangi'm not sure on what bolt size is needed, are the holes on the stock heads even threaded?
i just cut the tubes off the part that bolts to the head, and then flip them over and bolt them back on.
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