1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Finally the porting started

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Old Oct 26, 2003 | 12:54 PM
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Finally the porting started

Well so long of not working on the engine, I decided yesterday to start the port. Guess what it is?





It's not fully done as you can see, especially on the bridge side.
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Old Oct 26, 2003 | 06:22 PM
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full bridge
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Old Oct 26, 2003 | 06:25 PM
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Re: Finally the porting started

Originally posted by abeomid
I decided yesterday to start the port. Guess what it is?
in the water seal
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Old Oct 26, 2003 | 07:10 PM
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Re: Re: Finally the porting started

Originally posted by Felix Wankel
in the water seal
That's what i was just thinking.

Not for street driving though...i'm moving away from mine for now. Got tired of always working on the car and just using it for racing. Feel like making it more daily drivable, i want to put a stock port in it and try to make it go low 14's.
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Old Oct 26, 2003 | 08:09 PM
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Yup, J-Bridge. I finished that one. Need some touch up here and there. So far around 4hours. Got some more pictures, will post up shortly.
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Old Oct 26, 2003 | 09:09 PM
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Is it supposed to appear to be in the water seal?
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Old Oct 26, 2003 | 09:17 PM
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The date on your camera is wrong .

~T.J.
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Old Oct 26, 2003 | 09:18 PM
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Originally posted by Makenzie71
Is it supposed to appear to be in the water seal?
a j-bridge goes through it.
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Old Oct 26, 2003 | 09:22 PM
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Originally posted by Felix Wankel
a j-bridge goes through it.
Can you explain what this does?
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Old Oct 26, 2003 | 09:38 PM
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Well I have more pictures, here is a link to mazdatrix for more explanation about J-bridge: http://www.mazdatrix.com/faq/portbp.htm

My pictures:

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Old Oct 26, 2003 | 10:42 PM
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Hmm. That kinda looks like a big sloppy *** mess. hehe...at least it matches the car.
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Old Oct 26, 2003 | 10:53 PM
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Looking remarkably like what I picture mine as becoming soon. lol....
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Old Oct 26, 2003 | 11:10 PM
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Originally posted by Cody
Hmm. That kinda looks like a big sloppy *** mess. hehe...at least it matches the car.

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Old Oct 26, 2003 | 11:23 PM
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The pictures dated today look good. Gonna use Carbon or Ceramic apex seals?
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Old Oct 27, 2003 | 12:23 AM
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Originally posted by Cody
Hmm. That kinda looks like a big sloppy *** mess. hehe...at least it matches the car.
Talking about mess, maybe u should go outside and take a look at your "body kit" or even easier, since you are so lazy, take a look at your signature.

I am using carbon apex seals.
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Old Oct 27, 2003 | 07:03 AM
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abeomid : Looks good!Cant wait to see what the results will be

I`am very happy that everybody isnt taking the turbo route!

Cheers
Karis
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Old Oct 27, 2003 | 07:46 AM
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Nice work there ignore the trolls - you know how much badass work is in that "mess"
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Old Oct 27, 2003 | 03:50 PM
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Originally posted by abeomid
Talking about mess, maybe u should go outside and take a look at your "body kit" or even easier, since you are so lazy, take a look at your signature.
LOL
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Old Oct 27, 2003 | 03:59 PM
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Looks great. Anyone who calls that a mess wouldn't know the first thing about porting their own engine.
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Old Oct 27, 2003 | 05:09 PM
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revhed - they were talking about the car itself. But anyone who knew half of the work Omid put into that wouldn't have called it a mess anyway. How many folks have their FBs sitting on FC suspensions anyway?
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Old Oct 27, 2003 | 07:10 PM
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Thanks for the support guys. Yeah lots of work. I think it's over 2000hours now. Yeah some people say the car looks like a mess, but obviously they haven't tried doing a real project. It's getting there. Some more time and MONEY and it will be done.
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Old Oct 27, 2003 | 07:34 PM
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I would still like some info on this port that extends into the water jacket.
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Old Oct 27, 2003 | 07:50 PM
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"J or Monster Port

The J ported engine (also known as monster port) is as big as conventional side-plate porting can go. It is the same as the bridge port in design, but the bridged port is now fatter and extends past the face of the rotor and into the housing’s water seal / O-ring requiring the need for the seal to be cut back and filled with a metal type sealant such as "Devcon", plus, depending on the side plate used, the water gallery requires blocking off and filling on the side plate and the rotor matching.

Cutting into the rotor housing is also needed for port matching. The main problem with this design of port is a short life-span as water does and will seep through the seals. The main field where a J-port is likely to be seen is on the track where restrictions don't allow peripheral porting, or a slightly wider power band is desired. Typically around 300hp can be expected.



PRO'S: Slightly better power than a bridge port (5 to 10%) without the expense of a PP
CON'S: Short life-span, 6-12 months / 5,000-10,000km, narrow power band, need for free-flowing/loud exhaust system, poor drivability"
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Old Oct 27, 2003 | 07:54 PM
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considering the cons what would be the point unless you're making a drag racer?
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Old Oct 27, 2003 | 07:59 PM
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I don't think there is a point to *any* bridgeport unless its a track car or if you don't drive it often (if a wild engine in my SVO only lasted 20K miles, that'd be fine since it gets driven about 2000 miles a year).
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