Subject	is done on purpose
Posted by	lymon on December 16, 2006 at 2:14 AM
	This message has been viewed 64 times.
In Reply To	Coolant restriction through the head gaskets... posted by WAGGZ on December 15, 2006 at 08:59 PM
Message	This is done to try to keep the coolant from leaving the cylinderheads too quickly, so the coolant can collect the heat out of the heads more effectively. You will find this headgasket design used on a lot of other cars with alluminium heads and multiple exhaust valves per cylinder..not just Nissan Ally cylinderheads that have the exhaust valves close to each other are vulnerable to localized overheating in the area between adjacent exhaust valves. It's also said that it can help to get a slightly higher pressure in the heads, so there's less of a chance for localized boiling points to occur So, in short...do NOT increase the size of the holes ! The Dutch Z32 enthusiasts site 350Z Silverstone 91TT 2+0 silver 90TNT 2+2 (Twinturboed NA) Skyline blue 92TT 2+2
Follow Ups	Coolant restriction through the head gaskets... - WAGGZ 20:59:45 12/15/06 i always increase the size of those holes in all - ztunerz 21:07:28 12/15/06 Its odd but alot of Nissan head gaskets on other cars look - twinturbopoweredz 21:33:17 12/15/06 yeah the KA are that same was for the 2 and 3 cylender area (n/m) - Halo Z 23:24:28 12/15/06 I would not fook with it. (n/m) - PennStateZ 22:01:00 12/15/06 I wonder why they are like that. I wonder if someone knows - upcominZ_(NOLA) 23:33:01 12/15/06 To improve circulation - NytWolf 02:09:21 12/16/06 Thanks for being here. - TT XTZ 09:59:23 12/16/06 Thanks, I enjoy being here (n/m) - NytWolf 11:25:06 12/16/06 I would bet those are there to help ballance the flow... - The-FActor 02:09:29 12/16/06 is done on purpose - lymon 02:14:57 12/16/06 Thanx guys for the info. (n/m) - WAGGZ 08:29:36 12/16/06 My tomei headgaskests match the size exactly - AzHeat 14:14:45 12/16/06 Correction, mine are slightly smaller than stock - AzHeat 15:14:16 12/16/06 Those are oil drain holes, not coolant. Check your - AzHeat 15:09:46 12/16/06 No. The part of my gaskets that are showing a yellowish - WAGGZ 15:56:29 12/16/06 ... - WAGGZ 16:19:27 12/16/06 Which brings up another good point worth mentioning here: - DAYTONAZ 16:09:55 12/16/06 The holes that are shaped like a pear are also - AzHeat 16:20:08 12/16/06 I see - WAGGZ 16:36:21 12/16/06
Post a Followup	You cannot reply to this message because you are not logged in.