difference between 1G/2G head

[shogun7g]

that's probably a common question here, but I'm driving a 95 Galant a with a 4G64 motor and I am doing the hybrid 63 head/64 block swap. I have a head in my posession right now, but how do i tell the difference? pics below:

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steve

 

[blackGSX2g]

Looks like a 2g head to me.

 

[miteclgst]

I concur with blackGSX2g, the size of the intake ports are smaller than that of a 1G.

 

[Scrymerr]

And the thermostat housing bolts up differently.

 

[skinnypimp]

2g

 

[shogun7g]

awesome, thanks so much guys.

steve

 

[Bud92gsx]

Which is the head that is supposed to be bronze on the inside? My gsx head when i pulled the Vc off was all bronze. When I pulled the VC off my 6 bolt swap talon, everything was definatley not bronze..How Do I tell the difference with the head on?Just from pulling off the Vc if possible...

Thanks
Bud

 

[JusMX141]

It was probably all "bronze" underneath the valve cover from the burnt oil residue.

A clean rebuilt head that was tanked and degreased will look like this with the valve cover removed:

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[Bud92gsx]

Ya the head on the talon was tanked amd looked like that? But nothing is really brass or bronze at all, It's just dirty?

 

[Boosted98gsx]

Ya the head on the talon was tanked amd looked like that? But nothing is really brass or bronze at all, It's just dirty?

Pennzoil does that to engine internals. Turns them colors from the nastyness that is that oil. Use valvoline or mobil 1 and you won't have that issue.

 

[Bud92gsx]

Pennzoil does that to engine internals. Turns them colors from the nastyness that is that oil. Use valvoline or mobil 1 and you won't have that issue.

Since owning this car I have always used mostly valvoline, except for in the winter, which don't get driven much.....I have some Syntec waiting in the garage for summer..