Okay I do have another gasket however it is the thinner gasket that came with the cummins upper engine gasket kit. I used the thicker gasket because the head was planed or shaved or whatever it is called.
Can the thinner gasket be used or should I get another thicker one?
Re-surfacing the head will have little to no affect on compression. You could use the thinner HG. The only reason you would want to decompress by using a thicker HG would be if you are running a lot of boost, and high horse power. Remember when you decompress you lose low end power.
If you decked the block you will prolly want to use the thicker HG. I rebuild cummins power units (4bt and 6bt's) and we deck the blocks and more times than not if we use factory headgaskets they will hit the head. So for safety we use victor headgaskets that are thicker. Hope this helps.
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