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Author Topic: Standard g40 head  (Read 2169 times)

Offline PeteG40

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Standard g40 head
« on: November 09, 2011, 07:13:29 pm »
nice and clean - esp round the water jackets!  has plugs in still (not sure of condition) - does not come with cam/tappets.
Would recommend a skim etc before using, but looks clean enough! sorry for blurry pics! (on top pic is just discoloured around oil way)
£130+post


pete





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Offline james22sniper

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Re: Standard g40 head
« Reply #1 on: December 07, 2011, 03:31:11 pm »
Hi Pete... Just looking at your head again. You say it is "standard"... are there different types? I have a mechanic checking ours over with a view to getting a price for reconditioning. But yours could be a cheaper option. Out of interest... what part of the country are you in?
Thanks... James.
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Offline hayesey

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Re: Standard g40 head
« Reply #2 on: December 07, 2011, 03:41:06 pm »
Quote
are there different types?

well some people modify them, port them and what not, also fit bigger valves.

While I'm typing this I might as well say that Pete is near Barnsley.
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Offline PeteG40

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Re: Standard g40 head
« Reply #3 on: December 07, 2011, 04:16:24 pm »
all true!
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Offline james22sniper

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Re: Standard g40 head
« Reply #4 on: December 07, 2011, 05:28:15 pm »
But apart from modifying the valves, the overall sizes, inlet and outlet, bolt down configurations etc are the same???
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Offline Dan:)

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Re: Standard g40 head
« Reply #5 on: December 07, 2011, 08:05:16 pm »
Is the G40 head the same as a normal 1.3 head??
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Offline PeteG40

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Re: Standard g40 head
« Reply #6 on: December 07, 2011, 08:55:01 pm »
no - all g40 headsare the same - they are teh same casting as a 1.3 mk3 head, but the valves are sodium filled and they are double sprung
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Offline garye40

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Re: Standard g40 head
« Reply #7 on: December 08, 2011, 09:54:15 pm »
am i am looking to big valve one wud i be better just doing it to a mk 3 head then ? to safe a few bob and buy new double springs ?
if so anyone no were to get the correct oversized valves from ?
and springs
also pete i am still interested in head wanna see want wrks out best in the long run cheers
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Offline PeteG40

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Re: Standard g40 head
« Reply #8 on: December 09, 2011, 07:45:43 am »
big valves usually just enlarge outlet valves... inlets are very slightly different ona g40 head but not much. (like 1mm longer i think - according to etka)

however big valves - generally people used them from man in a shed or jabbasport... but they only did a few runs - so are basically saying ( from what i remember) that they'll only do 10 sets at a time.

Also -if you do find a stock 1.3 head, then i have some double valve springs from a fecked head in the shed.

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Offline garye40

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Re: Standard g40 head
« Reply #9 on: December 10, 2011, 10:49:40 pm »
ahh ok i have a head here 1.3 but also wud need a refurb just been sitting what affect wud shorter inlet valve have exactly ?
Thanks for the info btw and offer of springs i may consider both for a min wud prob prefer an original head with some meat on it anyway but good to know i could work on a spare too have a standar g40 cam and a high lift one here somewhere too i think
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