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DRFTPG
9th July 2007, 06:40 PM
Just looking at head gaskets for a CA18DET and was wondering, of you put a 1mm gasket on you will have more compresion that if you put a 1.8mm gasket on?
dr1ft-pig
9th July 2007, 06:55 PM
thinner gasket = higher compression
DRFTPG
9th July 2007, 07:00 PM
ok, anyone know a stock CA18's gasket size?
dr1ft-pig
9th July 2007, 07:09 PM
look in wikidedia or something
DRFTAE86
9th July 2007, 07:20 PM
Your on the wrong forum for CA questions.... head to...

www.nissansilvia.com
stefan
10th July 2007, 02:17 PM
its 1mm or 1.2mm from memory
awang
11th July 2007, 12:53 AM
anyone have use HKS 0.7mm metal head gaskets on their 4age?
kaibeecee
11th July 2007, 11:13 AM
0.8mm is most common, TRD etc.

it is best to get re-tuned if you have a aftermarket ECU, but stock management will run it fine
ae86trueno
11th July 2007, 06:17 PM
Im running the 0.5 TRD on my 4AG, no complaints so far, 98 fuel is a must.

Ben.
haado gei
11th July 2007, 08:26 PM
i also have a 0.5mm it's money well spent
awang
12th July 2007, 07:15 AM
i'll be using the hks 0.7mm metal head gaskets, still waiting to arrive, can't wait, thanks for the info guys
86adz
13th July 2007, 11:43 AM
im about to bolt my head back on with a 0.8mm trd head metal head gasket. Does anyone know what type of sealant to use with it if any??
dr1ft-pig
13th July 2007, 01:12 PM
no sealant, thats what the gasket is for, just make sure both surfaces are clean as a whistle
riceburner
14th July 2007, 11:15 AM
You can get a head gasket spray from ACL but from what i have learnt you dont really need it.

Most headgaskets that im aware of have a sealant already placed on it and the first time is heated up, during run in, the sealent goes to work.

Thats my theory on it all.

But the best seal will always be a super flat head and block surfaces with good head bolts, say like ARP, torqued in the right sequence to the right torque levels. Which would be about 60-65 pounds on the old torque wrench scale or 300-320kg/cm.
mike86
14th July 2007, 01:15 PM
thinner gasket = higher compression[/b]

can i ask why this is? or if someone can point me towards an answer
ae86_Guy
14th July 2007, 01:42 PM
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thinner gasket = higher compression[/b]

can i ask why this is? or if someone can point me towards an answer
[/b]

Because a thinner head gasket will reduce the size of the cylinder. Smaller cylinder means less room for the same amount of fuel air mixture, increasing compression.