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Old 07-04-2004, 01:26   #1 (permalink)
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semi open/closed heads

has anyone ever heard of kidney shaped chambers rather than open or closed chambers on a set of 2v heads that have been built for gas
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Old 07-04-2004, 17:19   #2 (permalink)
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Re: semi open/closed heads

would some of you enigne specialists like to comment
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Old 07-05-2004, 04:48   #3 (permalink)
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Re: semi open/closed heads

got a pic
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Old 07-05-2004, 05:23   #4 (permalink)
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Re: semi open/closed heads

I have kidney shaped chambers , only because they are alloy heads . I have never heard of this in a 2v ford head. Are they standard closed chamber heads that have been reshaped? I personally would choose a head with the correct volume or cc to suit my needs. If these kidney shaped ones are the right volume, go for it. Still, i cant see an advantage with them. The alloy ones that are kidney shaped have other differences like spark plug location ect, while still retaining good compression due to lower chamber volume. If i didnt have alloy heads, i would be using closed chamber 2v heads.
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Old 07-05-2004, 05:35   #5 (permalink)
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Re: semi open/closed heads

well i just bought the engine because my crank bearings are gone in my other 302 the head has been built to run on gas and supposively it helps the burn of gas or something anyone heard of this at all
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Old 07-05-2004, 15:31   #6 (permalink)
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Re: semi open/closed heads

sometimes the closed chamber heads are refered to as kidney shaped. I think this is an american term
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Old 07-05-2004, 16:49   #7 (permalink)
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Re: semi open/closed heads

Quote:
Originally Posted by xcgxl
sometimes the closed chamber heads are refered to as kidney shaped. I think this is an american term
i've heard this term for cc heads as well.
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Old 07-05-2004, 16:59   #8 (permalink)
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Re: semi open/closed heads

ok then just the fella on the phone said that the engine had semi open/closed chambers to run better with gas and that thay were kidney shaped but they are just standard closed chamber 2v's thanks guys
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Old 07-05-2004, 19:10   #9 (permalink)
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Re: semi open/closed heads

They might be Yella Terra LPG heads which have had the chambers modified and exhaust inserts put in ??? Pics would be good !!!
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Old 07-05-2004, 19:21   #10 (permalink)
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Re: semi open/closed heads

yeah ill grab some pics once i have thee engine in my hands still got to pik it up from melbourne
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