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Main : Mechanical : Engine head A14

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head A14
head A14Popular
SubmitterddgonzalMore Photos from ddgonzal   Last Update2008/3/25 4:48    Tell a friendTell a friend
Hits6448  Comments5    0.00 (0 votes)0.00 (0 votes)
A14 head, medium-oval ports and water passages below the intake ports. This one has high compression closed chamber.

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The comments are owned by the poster. We aren't responsible for their content.

Poster Thread
L18_B110
Posted: 2003/4/22 8:22  Updated: 2003/4/22 8:22
No life (a.k.a. DattoMaster)
Joined: 2002/8/6
From: Brisbane, Australia
Posts: 3792
 Re: head A14 GX
looks identical to the normal A14 head I've had lying around at home for years (going on NoPSI's car), and the head that was on the A14 I bought for my old white coupe years ago. The valves were 35 and 29mm I think.

What distinguishes this "GX" version from the common A14 head?

Poster Thread
ddgonzal
Posted: 2003/4/22 21:45  Updated: 2003/4/22 21:45
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31599
 Re: head A14 GX
The so-called "GX" head is what US racers call the Nissan Competition A14 head: oval ports and closed chamber. This was not original equipment in any US models (I think).

Poster Thread
D
Posted: 2003/4/24 2:01  Updated: 2003/4/24 2:01
No life (a.k.a. DattoMaster)
Joined: 2002/10/28
From: under the Firmament LOL no twiglight effect BS
Posts: 10926
 Re: head A14 GX
I found my closed chamber oval port on a fwd pulsar a14 and to me when I and a machine shop compared it to a 1200 gx head there were no differences even on valve sizes or port sizes. The a14 closed chamber oval port has the in and exhaust valves almost touching each other and are bigger than on all the a15 engines ive pulled apart. There arent any noticeable differences except the dble springs and maybe different valve gear setup.

Poster Thread
b310gx
Posted: 2003/4/26 13:29  Updated: 2003/4/26 13:29
No life (a.k.a. DattoMaster)
Joined: 2002/7/19
From: sydney australia
Posts: 1858
 Re: head A14 GX
the only difference i've ever seen was in the a14 oval port head,the top of the inlet port is lower than the a12 gx head.as this is only a small amount,port matching the a14 head will give you the same height.i think this is for a straighter path to the inlet valve.