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Old 03-05-2005, 23:01   #1 (permalink)
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head weights

has anyone weighed there alloy heads to see the weight difference to iron?
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Old 03-05-2005, 23:23   #2 (permalink)
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Re: head weights

Im not sure of the figures, but i believe there is a big difference.
I remember hearing it saves around 30kg ?
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Old 03-06-2005, 01:54   #3 (permalink)
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Re: head weights

I wouldnt think it would be that much, but who knows.
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Old 03-06-2005, 02:28   #4 (permalink)
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Re: head weights

Quote:
Originally Posted by 4vxc
I wouldnt think it would be that much, but who knows.
Roughly, 2 steel heads are 56kg and 2 alloy heads are 30kg.
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Old 03-06-2005, 13:14   #5 (permalink)
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Re: head weights

Removing the York air compressor and the substituting the cast heads and inlet manifold with alloy versions meant I had to lower my XD 1 1/2" to get it back to the original height - that's how much lighter they are.
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Old 03-06-2005, 16:58   #6 (permalink)
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Re: head weights

Quote:
Originally Posted by xdclevo
Roughly, 2 steel heads are 56kg and 2 alloy heads are 30kg.
2 cast iron cylinder heads weigh 100.5#, or approximately 45Kg. The average alloy cylinder head is a bit less than 30#, or about 13.5Kg each. The alloys are just about half the weight of iron heads. 45Kg compared to 27Kg for a pair.

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Old 03-06-2005, 17:53   #7 (permalink)
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Re: head weights

Quote:
Originally Posted by shaynet
Removing the York air compressor and the substituting the cast heads and inlet manifold with alloy versions meant I had to lower my XD 1 1/2" to get it back to the original height - that's how much lighter they are.
same here. my front end went up a similar amount
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Old 03-06-2005, 19:28   #8 (permalink)
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Re: head weights

so 18kg or 40lb saving, theres 3 or 4/100ths I suppose
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Old 03-06-2005, 20:16   #9 (permalink)
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Re: head weights

I was told my alloy heads are 13kg each. They weight saving on the frontend and more the steering is nicer.

[edit] I'm not sure of their exact weight but I struggle to carry a 2V cast iron head. I can carry my CHI 3V head in 1 hand like a small tool box without effort. I don't think they feel like they weight much more than 10kg each. When I took my heads back to CHI for repair I carried one per hand and had my son sitting on one arm aswell

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Old 03-07-2005, 07:27   #10 (permalink)
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Re: head weights

I'm sure its on the CHI web page. Do they say save 13 kg ??? Will find out.
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