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ddgonzal
Re: A14 head--728-402
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To correct what I said last year, there are two engines for USA in 1977:
- Regular, oval port A14
- Five-speed cars: Round port A14

Yours may be the 1977 round-port, or it may simply have had the head replaced at some time in the last 30 years.

The round-port is an excellent cylinder head for 4500 rpm or less operation. It got up to 50 mpg on highway with 5-speed.


See the pics for "A14 Round-port High-Swirl head" in the Cylinder Heads. Note that this is not about the "swirl-port" head which came later, but is the "high swirl" head.Quote:
These have quench chambers (not open chambers) but instead of being used in high-compression engines, they are designed for high swirl (for better fuel economy and improved emissions). They are used with dished pistons. Unlike the swirl-port heads, these have unobstructed ports. The ports are lowered so that the charge is forced to swirl as it enters the chamber.

Posted on: 2007/8/17 5:36
Transfer the post to other applications Transfer

Subject Poster Date
     A14 head--728-402 DatsunSSS 2006/1/12 20:13
       Re: A14 head--728-402 DatsunSSS 2006/1/13 1:53
         Re: A14 head--728-402 Mildman 2006/1/18 3:21
           Re: A14 head--728-402 DatsunSSS 2006/1/18 8:12
             Re: A14 head--728-402 ddgonzal 2006/1/19 2:33
               Re: A14 head--728-402 DatsunSSS 2006/1/19 8:05
                 Re: A14 head--728-402 Mildman 2006/1/20 6:45
                 Re: A14 head--728-402 ddgonzal 2006/1/20 7:26
                   Re: A14 head--728-402 DatsunSSS 2006/2/23 21:47
                     Re: A14 head--728-402 rgrinder 2006/2/24 6:45
                       Re: A14 head--728-402 DatsunSSS 2006/2/24 8:05
                         Re: A14 head--728-402 rgrinder 2006/2/24 8:22
                           Re: A14 head--728-402 DatsunSSS 2006/2/24 20:30
                             Re: A14 head--728-402 Dats-hot 2006/2/24 20:43
                               Re: A14 head--728-402 DatsunSSS 2006/2/24 20:54
                                 Re: A14 head--728-402 ddgonzal 2006/2/25 17:17
                                 Re: A14 head--728-402 Dodgeman 2006/2/25 22:13
                                   Re: A14 head--728-402 DatsunSSS 2006/2/25 22:35
                                     Re: A14 head--728-402 Dodgeman 2006/2/25 22:52
                                       Re: A14 head--728-402 B210sleeper 2006/5/26 2:30
                                         Re: A14 head--728-402 DatsunSSS 2006/6/30 4:22
                                           Re: A14 head--728-402 DatsunSSS 2007/8/17 3:22
                                             Re: A14 head--728-402 ddgonzal 2007/8/17 5:36
                                               Re: A14 head--728-402 DatsunSSS 2007/8/17 20:10
                                                 Re: A14 head--728-402 rventura 2007/8/17 20:59
                                                   Re: A14 head--728-402 DatsunSSS 2007/8/17 21:31
                                                     Re: A14 head--728-402 rventura 2007/8/17 21:58
                                                       Re: A14 head--728-402 simmos_datto 2007/8/17 22:09
                                                   Re: A14 head--728-402 ddgonzal 2007/8/17 23:52
                                                     Re: A14 head--728-402 DatsunSSS 2007/8/18 2:05
                                                       Re: A14 head--728-402 ddgonzal 2007/8/19 7:53
                               Re: A14 head--728-402 SLAM1024 2006/2/25 23:25
                                 Re: A14 head--728-402 ddgonzal 2006/2/26 6:42
                                   Re: A14 head--728-402 Dodgeman 2006/2/26 8:25
                                     Re: A14 head--728-402 DatsunSSS 2006/2/26 14:07
                                       Re: A14 head--728-402 ddgonzal 2006/2/26 17:53
                       Re: A14 head--728-402 ddgonzal 2006/2/25 17:12




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