DeLayne_7287
New member
First off, Happy New Year!
We have been in the process of rebuilding a 2004 5.9 (machined and 40 over) and I ordered a 40 over engine rebuild kit that came with the 40 over pistons, etc. along with the gaskets. The head gaskets that came with the kit are the standard size head gasket, though.
Cummins says that they do have a 40 over gasket but it is hard to get/find and is much more expensive. They gave me the part number and nothing comes up online for it.
I figured that once you select 40 over pistons when you order online, the kit would automatically come with a head gasket for 40 over, but it doesn't or at least this one doesn't. We put the gasket on to see how it sat but some spots obviously slightly cover the cylinders, which seems that it won't allow it to make a good seal and won't last long if I go with it.
So, what head gasket are yall using when yall have a block that's punched out 40 over? I see that they have 20 over gaskets but can't find them for 40. Any suggestions or explanations would be great! Thank you!
We have been in the process of rebuilding a 2004 5.9 (machined and 40 over) and I ordered a 40 over engine rebuild kit that came with the 40 over pistons, etc. along with the gaskets. The head gaskets that came with the kit are the standard size head gasket, though.
Cummins says that they do have a 40 over gasket but it is hard to get/find and is much more expensive. They gave me the part number and nothing comes up online for it.
I figured that once you select 40 over pistons when you order online, the kit would automatically come with a head gasket for 40 over, but it doesn't or at least this one doesn't. We put the gasket on to see how it sat but some spots obviously slightly cover the cylinders, which seems that it won't allow it to make a good seal and won't last long if I go with it.
So, what head gasket are yall using when yall have a block that's punched out 40 over? I see that they have 20 over gaskets but can't find them for 40. Any suggestions or explanations would be great! Thank you!