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Main : Mechanical : Engine a13 race engine ports

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a13 race engine ports
a13 race engine portsPopular
Submitterda-feralMore Photos from da-feral   Last Update2002/12/19 23:11    Tell a friendTell a friend
Hits7715  Comments11    0.00 (0 votes)0.00 (0 votes)
Here is look in the ports note flow bench spring on exhaust valve

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

Poster Thread
da-feral
Posted: 2002/12/29 5:55  Updated: 2002/12/29 5:55
Just popping in
Joined: 2002/12/12
From: Millgrove Victoria Oztralia
Posts: 17
 Re: a13 race engine ports
It has awesome port area and flow for 1298 cc!!! Exhausts flow about 80% of the inlet ports as well surprisingly. I think it would work very well on an A14 - A15 cranked with 79mm bore
Cheers
Feral Errol

Poster Thread
dattoman_1000
Posted: 2002/12/20 10:30  Updated: 2002/12/20 10:30
No life (a.k.a. DattoMaster)
Joined: 2002/8/11
From: Perth
Posts: 2692
 Re: a13 race engine ports
wow they are actually bigger than mine

Poster Thread
D
Posted: 2003/2/24 23:53  Updated: 2003/2/24 23:53
No life (a.k.a. DattoMaster)
Joined: 2002/10/28
From: under the Firmament LOL no twiglight effect BS
Posts: 10994
 Re: a13 race engine ports
Is it possible to go higher with the exhaust ports or are there other consequences like waterjackets.

Poster Thread
tsillay
Posted: 2003/2/25 0:25  Updated: 2003/2/25 0:25
Home away from home
Joined: 2002/11/26
From: Wellington New Zealand
Posts: 468
 Re: a13 race engine ports
Nice!

I have seen them higher, but you run into the spring platfroms. These need to get moved up and you need longer valves..Then the rockers have to be spaced up, then you make up duralumin pushrods with chevy ends on them
Then you move the mounting bolts for the manifold and move the whole damn manifold up too
It's all getting a bit silly about this time...

Poster Thread
D
Posted: 2003/2/25 1:27  Updated: 2003/2/25 1:27
No life (a.k.a. DattoMaster)
Joined: 2002/10/28
From: under the Firmament LOL no twiglight effect BS
Posts: 10994
 Re: a13 race engine ports
Can you just d port the top to get a the same square port but with round top?

Poster Thread
Datsun100ATurbo
Posted: 2003/2/25 6:37  Updated: 2003/2/25 6:37
Home away from home
Joined: 2003/1/13
From: Forsby Finland
Posts: 167
 Re: a13 race engine ports
You can D-port the top of the head but don

Poster Thread
D
Posted: 2003/2/25 14:13  Updated: 2003/2/25 14:13
No life (a.k.a. DattoMaster)
Joined: 2002/10/28
From: under the Firmament LOL no twiglight effect BS
Posts: 10994
 Re: a13 race engine ports
Thats it, time to mangle an old a12 head to see how far to go. Since Im getting a custom exhaust header Id like to do it. However my dream setup, I dont know the term (someone educate me) would b alloy tubes welded into the head to act as an inlet manifold too (ala peripheral port rotary) and same for exhausts.

Poster Thread
Datsun100ATurbo
Posted: 2003/2/25 14:28  Updated: 2003/2/25 14:28
Home away from home
Joined: 2003/1/13
From: Forsby Finland
Posts: 167
 Re: a13 race engine ports
I put up a couple of pictures in the photosection under engine where you can see how far you can go. It doesn

Poster Thread
D
Posted: 2003/2/26 0:36  Updated: 2003/2/26 0:36
No life (a.k.a. DattoMaster)
Joined: 2002/10/28
From: under the Firmament LOL no twiglight effect BS
Posts: 10994
 Re: a13 race engine ports
Itd b great to get an inlet gasket made up of this head so all of us know how far to go with our proting first off.
Hey Feral you could make some money from this

Poster Thread
tsillay
Posted: 2003/2/26 1:39  Updated: 2003/2/26 1:39
Home away from home
Joined: 2002/11/26
From: Wellington New Zealand
Posts: 468
 Re: a13 race engine ports
mmm, this'll be welded already wont it?