Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - fel-pro or cometic?

neilsan · 10-13-2008, 11:43 PM

Unfortunately, I don't think Fel-Pro makes their badass performance head gaskets for a KA24DE. Compared to stock, a regular fel-pro is the better choice... and supposedly there's a fairly high success rate with new stockers at 400whp.

Using Cometic gaskets seems to be hit and miss... And as much as I love to criticize things I don't know about, I suspect the "misses" could have been prevented by the parts of stories that you Don't hear about, such as reusing stock head studs, or improperly re-torquing the head, or not having the head and block decked, etc.

I'm not sure how thick a cometic is but another thing to consider is that if you use a moderately thicker head gasket to drop compression, you also effect cam timing to some degree, necessitating adjustable sprockets to correct it.

10-13-2008, 11:43 PM	#13
neilsan Zilvia Junkie Join Date: Sep 2004 Location: east coast Age: 44 Posts: 333 Trader Rating: (0)	Unfortunately, I don't think Fel-Pro makes their badass performance head gaskets for a KA24DE. Compared to stock, a regular fel-pro is the better choice... and supposedly there's a fairly high success rate with new stockers at 400whp. Using Cometic gaskets seems to be hit and miss... And as much as I love to criticize things I don't know about, I suspect the "misses" could have been prevented by the parts of stories that you Don't hear about, such as reusing stock head studs, or improperly re-torquing the head, or not having the head and block decked, etc. I'm not sure how thick a cometic is but another thing to consider is that if you use a moderately thicker head gasket to drop compression, you also effect cam timing to some degree, necessitating adjustable sprockets to correct it.