12 replies to this topic

[Ando]

Does anyone know what spark plug is used in the Bathurst 6000 head?

The casting date & numbers are milled off but the head looks to be a 149 going by the exhaust post casting. It definitely isn't the standard type 9 port plug.

Going by the plug hole machined in the head, the plug would look like a short thread length (10-12mm) then a longish shank before the hex nut (10-14mm) approximately. 

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Edited by Ando, Yesterday, 09:01 AM.

[warrenm]

Can you show the spark plug hole, so the plug type can be determined.

[claysummers]

Also a photo of the front of the head where the thermostat housing bolts on will confirm if it is 149 or 161.


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[claysummers]

Assuming it is a small chamber head that is?


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[Ando]

G'day Clay. The head is at my local engine builder. I'll drop in there & get a couple photos as requested.

[LCK186]

hi looks like its a low comp head, with yt valves and duel springs, why do u think that its a 6000 head,

[I'm a Red Motor fiend]

It's a 149 hi comp head that's been f*cked by having the chambers machined.

[Dr Terry]

It's a 149 hi comp head that's been f*cked by having the chambers machined.

How do you know it's not a 161 head ?

 

Dr Terry

[I'm a Red Motor fiend]

How do you know it's not a 161 head ?

Dr Terry

The exhaust ports

[Ando]

The engine shop sent some pics of the spark plug hole plus a couple more. He's work on one of these heads a long time ago but he can't remember the type or brand spark plug that suits the hole bore. Any clues?

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[LCK186]

Hi it still looks like a low comp head, why would u open the chambers, the whole idea is to get higher comp, unless you were building a turbo engine,which is lower the com the better

[Ando]

Hi it still looks like a low comp head, why would u open the chambers, the whole idea is to get higher comp, unless you were building a turbo engine,which is lower the com the better

 

The engine build is to take a Strata turbo. 

[LCK186]

Hi  i thought so, so its a low comp head,set op for turbo,so its not a bath 6000 head,