Ports So Far
04-26-2004, 10:19 PM
#1
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Join Date: Jun 2003
Posts: 406
These are my intake ports as compared to stock so far. they are pretty much dione in outline, but the runners still need lots of work. Also the bridge isnt cut on the aux port, and the closing will be raised about 1/8th an inch and polished on the housing side so that the port closes nice and gradualy, like a scissors so i dont round off the trailing edge of the side seal. the primary closes a little latter than i wanted, but i had to raise the upper outside edge once agin to preserve the side seals trailing edge.
04-26-2004, 10:23 PM
#2
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Join Date: Jun 2003
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I'll hopefully have pics soon, as my friend had to take his digi cam back for a few days (i was borrowing it) because he just bought a 240z and had to take pics of it, till then tracings are all i have. the scale is right on all the ports, but there positioning next to each other may be off a tad as i just tapped the 2 tracings together.
04-27-2004, 12:44 PM
#6
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Location: CT
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the area of the port hole with the bridge and its side port are too much for the runner plus the port timing will be all off, you will not gain any power by doing this. unless u port ou the runner a lot and make a completely new separete runner for it its nto worth doign this.
04-27-2004, 01:17 PM
#7
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Join Date: Nov 2002
Location: Honolulu, Hawaii USA
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Originally Posted by kahren' date='Apr 27 2004, 09:44 AM
the area of the port hole with the bridge and its side port are too much for the runner plus the port timing will be all off, you will not gain any power by doing this. unless u port ou the runner a lot and make a completely new separete runner for it its nto worth doign this.
That divider between the secondary port and the 6th port has nothing to do with port timing. I personally don't like people calling this area a "bridge" - it gets confusing with a brdge from a bridge port.
The port timing is dictated by outer edge (opening) and top edge (closing) of the port.
-Ted
04-27-2004, 05:21 PM
#10
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yeh,.. like i said everyone keeps saying that. I dont have the money to do it right, but i have time to fiddle with it until it works. Eventually im going to use a megasquirt and try a buncha differnt manifold configs, but untill then it will run on the stockers. I dont really care if it doesnt make ungodly HP like this, or if it ever does. I had to rebuild anyhow so i figured i'd try some stuff out. The price of the extra parts i needed (oil mods mostly) was insignificant in the price of the entire rebuild, therefore any HP i get will be free. And i highly doubt it will make less then stock even choking on stock manifolds. Also she is an S4 so hopefully i wont run into the AFM problem Mazdaspeed7 did. Ito had a full bridge NA running on stock S4 manifolds that worked pretty well, i dont see why mine wont.