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Location: Tamworth NSW
Registered: November 2004
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4age head swap
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Sat, 05 February 2005 10:33
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I'm so confused
so far i have heard on these forums og guys putting 20V heads on 4agze's, or puttin 16V heads on 20V engines.
I want to improve power on a 4age, can I bolt on 20V head currently I run a big port with twin side draft carbs, no room to run efi.
Will it work?
is the main difference in a 20V in the head?
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Club Member
Location: sydney
Registered: May 2002
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Re: 4age head swap
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Sat, 05 February 2005 10:35

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I wouldnt call myself an engineer but Id be guessing the difference in the head might have something to do with one bieng called a 20V and the other a 16V
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Location: Tamworth NSW
Registered: November 2004
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Re: 4age head swap
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Sat, 05 February 2005 10:44

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Not nice
I can count 20V 16V
rthe blocks, the blocks will the 16v block accept the 20v head and give equivalent power to a 20V?
That's the question
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Location: Bundaberg, Qld.
Registered: May 2002
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Re: 4age head swap
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Sat, 05 February 2005 12:28

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there might be noticable power increase from the extra flow (debatable compared to a 16v bigport head) from useing the 20v head. the 20v engine also uses higher compression ratio to help give it it's extra power output over a 16v 4age.
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Location: Tamworth NSW
Registered: November 2004
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Re: 4age head swap
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Thu, 10 February 2005 08:13

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bummp
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Location: cambo
Registered: May 2002
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Re: 4age head swap
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Sat, 12 February 2005 23:56

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THE VALVE CUT OUT ON THE PISTONS 4 cut outs compared to 5 not saure if it would hit though
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Location: Toronto, Downtown
Registered: September 2004
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Re: 4age head swap
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Sun, 13 February 2005 00:05

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the 20v's also rev more than 16v's
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Club Member
Location: sydney
Registered: May 2002
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