May 19, 20196 yr Howdy. New forum member here with a quick question. Me and my buddy are working on my 97 impreza 2.2 wagon. We're doing head gasket replacement. The thing blew due to low radiator levels. My buddy, who's a mechanic, doesn't have much experience with Subarus and commented on the amount of piston pin bushings on each cylinder head. There were 2 on each head. He said he believes there should be 6 on each. Does that sound right? We're thinking of replacing them and don't want to order more than necessary. Open to your input (There's a bunch of other stuff we're replacing on the vehicle but this my current curiosity.) Thanks!
May 19, 20196 yr Do you mean the hollow dowels around the top corner Head bolts? If so, 2 is fine. That is how they come from the factory. I have heard of high HP turbo builds using 4 or 6, but it isn't necessary for standard engines. 2 is how it's supposed to be. When I think of "piston pin" I am thinking of wrist pins. But those have nothing to do with the heads.
May 19, 20196 yr Author 38 minutes ago, FerGloyale said: Do you mean the hollow dowels around the top corner Head bolts? If so, 2 is fine. That is how they come from the factory. I have heard of high HP turbo builds using 4 or 6, but it isn't necessary for standard engines. 2 is how it's supposed to be. When I think of "piston pin" I am thinking of wrist pins. But those have nothing to do with the heads. Hey, thanks for the reply! These are what I'm referring to. https://www.rockauto.com/en/catalog/subaru,1997,impreza,2.2l+h4,1269053,engine,piston+pin+bushing,5632
May 20, 20196 yr 19 hours ago, Ej22user said: Hey, thanks for the reply! These are what I'm referring to. https://www.rockauto.com/en/catalog/subaru,1997,impreza,2.2l+h4,1269053,engine,piston+pin+bushing,5632 I think they are generally called locating dowels rather than piston pins.
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