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takai
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Adelaide
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May 2003
 
4A-GE Head gasket specs Tue, 02 March 2004 03:23 Go to next message
Does anyone know the head gasket specs for the smallport 4A-GE.

Im looking at increasing the compression on the engine, and either a smaller HG or shaving seems the easiest way. Thinner HG of course the easiest.

Anyone know the specs of the stock one.
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ae86drift
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I supported Toymods

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sydney.au
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August 2002
 
Re: 4A-GE Head gasket specs Tue, 02 March 2004 05:40 Go to previous messageGo to next message
no idea on OEM

but the TRD ones come in 0.8 and 1.0

so stock would be larger than that i suppose

[Updated on: Tue, 02 March 2004 05:40]

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takai
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Re: 4A-GE Head gasket specs Tue, 02 March 2004 06:00 Go to previous messageGo to next message
What comp ratio would be produced by the 0.8mm gasket?
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ed_ma61
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Re: 4A-GE Head gasket specs Tue, 02 March 2004 06:02 Go to previous messageGo to next message
bugger all more compression if you estimate a stock h/g thickness of 1 or 1.2mm

more importantly, have you thought about piston and deck heights, and the squish clearance a thin head gasket is going to give you?

[Updated on: Tue, 02 March 2004 06:03]

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takai
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May 2003
 
Re: 4A-GE Head gasket specs Tue, 02 March 2004 06:10 Go to previous messageGo to next message
Yeah, have thought about it a bit. Kinda almost broke my brain.... but thats probably lack of sleep.
Found a HKS one which at .6mm claims 11.6 comp:
Quote:

HKS Head Gasket: Stopper Type. 0.6 mm. 82.5 mm bore. 11.6 compression ratio


But im not sure about what would happen to interference etc.
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takai
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Location:
Adelaide
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May 2003
 
Re: 4A-GE Head gasket specs Tue, 02 March 2004 06:18 Go to previous message
Im pretty sure that the CR is a misprint now, seems to not be corroborated by any of the HKS sites.

How else would i increase compression?
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