Guest Paul Felker Posted August 26, 2002 Share Posted August 26, 2002 which head gasket should i use for a 260z block, im putting on a n42 on a 260 block and i was wondering which head gasket to use, the one for the 260z block or the one for the n42 head???? i really could use an answer as soon as possible!! thanks guys Quote Link to comment Share on other sites More sharing options...
TimZ Posted August 26, 2002 Share Posted August 26, 2002 Originally posted by hotshift13:thanks lockjaw. but which one do i use the 260 block gasket or the gasket for the n42 head? i do agree with you completely on the fel-pro gaskets. For the head gasket, it doesn't matter - in either case one side of the gasket will be 'correct', and the other won't. In all likleyhood, there will be no difference, but you will need to make sure that all of the holes in the gasket line up with the corresponding holes in the head and in the block. If they do not, then you'll have to modify something, no matter which gasket you choose. Now, for the intake manifold gasket, use the one for the N42. Quote Link to comment Share on other sites More sharing options...
DAW Posted August 26, 2002 Share Posted August 26, 2002 Use the 260 block gasket for your 83mm bore, not the N42 gasket from the 86mm bore source. Your bore hasn't changed, it's still 83mm. DAW Quote Link to comment Share on other sites More sharing options...
DAW Posted August 26, 2002 Share Posted August 26, 2002 Oh, BTW your 260 block should have "eyebrows" cut horizontally into the tops of the cyl bores to provide clearance for 38mm ex valves (vs 35mm). Confirm that these are there or your ex valves will be "machining" their own block reliefs. They should be there unless it's a home-grown L26 (L24 block + L28 crank) vs factory L26. DAW P.S. If they're not there you can grind them in and more smoothly, better-flowing than the factory placed recesses. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted August 27, 2002 Share Posted August 27, 2002 I think the Nissan one is the best. Some people like Felpro's. Whatever kind, I like the thing to have that gray tacky coating on it. They seal up really well. Quote Link to comment Share on other sites More sharing options...
Guest Paul Felker Posted August 27, 2002 Share Posted August 27, 2002 thanks lockjaw. but which one do i use the 260 block gasket or the gasket for the n42 head? i do agree with you completely on the fel-pro gaskets. Quote Link to comment Share on other sites More sharing options...
TimZ Posted August 27, 2002 Share Posted August 27, 2002 Originally posted by DAW:Use the 260 block gasket for your 83mm bore, not the N42 gasket from the 86mm bore source. Your bore hasn't changed, it's still 83mm. DAW ...Oops - missed that part. I agree. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted August 28, 2002 Share Posted August 28, 2002 I picked up a Felpro head gasket today for a 260z, and it says it fits anything from 2.4 to 2.8 on the label. I wasn't sure when you guys were talking about bore differences if there was a difference in the "fire ring" part of the gasket. Evidently there is not, at least on Felpro head gaskets. I have however encounted a head gasket that did not fit my ZX block correctly, and promptly puked coolant out between the head and block of my original turbo engine. That was a sweet one, let me tell you. I don't know who made the gasket, it was one my friend had laying around his shop. I guess the real moral is to look at the gasket and make sure it works. I have done probably 20 swaps, and only had one issue, so now I check. Quote Link to comment Share on other sites More sharing options...
David K Posted August 31, 2002 Share Posted August 31, 2002 Originally posted by Lockjaw:I have however encounted a head gasket that did not fit my ZX block correctly, and promptly puked coolant out between the head and block of my original turbo engine. That was a sweet one, let me tell you. I don't know who made the gasket, it was one my friend had laying around his shop. i hope it wasnt a Lazorlite Quote Link to comment Share on other sites More sharing options...
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