2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

differences in porting?

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Old Dec 12, 2002 | 11:01 PM
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Flinstone Power
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differences in porting?

whats the difference between the following:
1.bridge port
2.j-port
3.monster bridge port
4.mega bridge port
5.perf. port

i have a goal to make the countrys fastest street driven FC and i am in the process of building a motor and need advice on these different ports.. thanks,
Dave
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Old Dec 12, 2002 | 11:09 PM
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Rotorific's Avatar
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http://www.rx7city.com/porting.htm i dont condone the site or anything just your answer so check it
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Old Dec 13, 2002 | 12:06 AM
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Alot of good info on this site as well....porting, how the rotary works, etc., porting info is in the "wrenching section".

http://www.monito.com/wankel/
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Old Dec 13, 2002 | 12:11 PM
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Flinstone Power
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bumpity
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Old Dec 13, 2002 | 12:13 PM
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also...pineappleracing.com has a good writeup.
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Old Dec 13, 2002 | 06:39 PM
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why don't you condone the site?
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Old Dec 13, 2002 | 06:45 PM
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Re: differences in porting?

Originally posted by DJChunter
whats the difference between the following:
1.bridge port
2.j-port
3.monster bridge port
4.mega bridge port
5.perf. port

i have a goal to make the countrys fastest street driven FC and i am in the process of building a motor and need advice on these different ports.. thanks,
Dave

I would suggest you get someone else to build it who already knows....
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Old Dec 13, 2002 | 06:59 PM
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Yeah, no offence or anything, but if you don't know the differences in rotary porting, you aren't going to be able to come anywhere near being competitive with the fastest street driven FC's around.

Unless you are loaded with $$$ and want to pay a specialist to do it all for you, then MAYBE that way you could do it...
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Old Dec 13, 2002 | 10:23 PM
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Flinstone Power
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Originally posted by Bridgeported
Yeah, no offence or anything, but if you don't know the differences in rotary porting, you aren't going to be able to come anywhere near being competitive with the fastest street driven FC's around.

Unless you are loaded with $$$ and want to pay a specialist to do it all for you, then MAYBE that way you could do it...
i know the diffeneces in the porting i just want to know what porting would still leave a little bit of streetability in the car.. i am getting a motor from pinapple so i just need to know what to do.. i heard of guys running PP on the street but i am looking for a motor that will last more then a year(2years respectibly).. i should of been more clear on what was sad.. i am really just looking for power outputs for each porting job thats listed.. my car is almost down to 2,000lbs and still have some more **** to come off.. i am just wanting to know the power potental i have with each setup.. sorry about that i should of been more clear..
Dave
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Old Dec 16, 2002 | 06:54 PM
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To have the fastest street driven FC in the country, you're 13B isn't going to last 2 years. I don't know who all has what FC out there, but you will need to have AT LEAST 700 rwhp to compete.
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Old Dec 16, 2002 | 07:01 PM
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Originally posted by Bridgeported
To have the fastest street driven FC in the country, you're 13B isn't going to last 2 years. I don't know who all has what FC out there, but you will need to have AT LEAST 700 rwhp to compete.
At least 700rwhp? Im not sure that there are any street driven 13b's in the states with that much HP to the wheels.
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Old Dec 16, 2002 | 07:14 PM
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Flinstone Power
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I am looking for the Fastest Street Driven N/A FC in the States.. now back to porting??
Dave
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Old Dec 16, 2002 | 07:20 PM
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OH YOUR GOING NA!!!! Well you gotta remember the bigger the port the higher the rpms have to be to even idle. And the higher your power band will be. What kinda power band do you want to have?
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Old Dec 16, 2002 | 07:43 PM
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Flinstone Power
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i consulted pine apple about what i want to do and they said the porting is up to me they cannot tell me what to do.. i was thinking of maybe a monster bridge, lightend race rotors, 2 piece e-shaft(gotta love 12k).. with a setup like this i was told it would pull hard to about 12k.. but i dunno.. thats why i am hear looking for advice.. i just got a new motor in my car now its its hella faster then stock.. i used stock port S4 with S5 rotors and of course my mods.. i am currently putting a carb setup on it..
Dave
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Old Dec 16, 2002 | 08:06 PM
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From: KC
If you are gonna run 12K rpms, you are gonna need a wicked clutch, tranny, etc. I have yet to see a clutch flywheel package that is warrantied above 10K rpms, but I do know that they are made. That is an insanely high rpm.
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Old Dec 16, 2002 | 08:46 PM
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hey pony killer dont some kalasawki (sp?) bikes redline at 14K although that is a bike
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Old Dec 16, 2002 | 10:59 PM
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Monster port is out of the question if you want your engine to last 1-2 years like you said. Expect a few months at most out of a monster bridge. I am sure there are a few guys running some p-ports around the states. There must be a few since there are a bunch in PR and NZ doing it. You'll probably need p-port, or have a good sized bridgeport with some excellent tuning.

I also didn't realise you wanted the fastest NA FC in the states, I was assuming fastest overall street FC. That pretty much changes everything I was saying before... I am not an NA specialist. Thus said, this is pretty much all I can add to this thread.
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Old Dec 17, 2002 | 02:01 PM
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Where can you get a 2 piece E-shaft?
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