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streetport vs. bridgeport im confused on the two

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Old 02-17-09, 08:53 AM
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TN streetport vs. bridgeport im confused on the two

ok so i own a 74 dodge charger sorry no rotary yet but i wanta buy a fd in like a year or two and i wanta take my time and do the research..lately ive been reading about tuning, supporting mods, single vs twin etc. My question is what exactly is a streetport and a bridgeport? which one is better for a daily driver? price comparison? are there any templates or threads i can read on the two etc. I head that streetport is better for low end power so its best for a street car and a bridgeport is better for top end and better for racing if thats the case why do i see so many bridgeported rx7s? my goal in the next 2-3 years is to build myself a reliable fd with around 400hp using a gt35r becuase of spooling capabilities. i prefer something quick with good low end power. with my charger and its 440 bb it got plenty of get up but i always wanted a fd so if u can help explain to me the difference between a streetport and bridgeport that would be helpful....
Old 02-17-09, 11:26 AM
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here is a good place to start.
Read this before starting to accept recommendation and opinions by the many geniuses on this forum. http://mazdatrix.com/faq.htm

That should give you some basic understanding.

If you like you can check out :

http://fd3s.net/
http://www.rx7guru.com/
http://robrobinette.com/
http://www.rx7city.com/techconnect.htm

these will give you some basic and helpful info, to help you see the problems and fixes for our cars
Old 02-17-09, 12:57 PM
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thanks man
Old 02-17-09, 03:11 PM
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since you want a gt35, and 400hp, that basically means a streetport.

gt35 is a great quick spooling street turbo. 400hp is no problem. bridgeport is for people who are looking for more than 600hp....
Old 02-17-09, 03:16 PM
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ok rite now im learning more about porting and what it does for you..and im trying to figure out why they call it bridgeport and streetport? and what is a pineapple port?
Old 02-17-09, 03:35 PM
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A bridgeport has a eyebrow for the corner seal to pass over while allowing more air to be pulled into the motor from the other side of the corner seal. A streetport advances the port timing which moves the torque curve further up the rpm range.

Pretty much, you want to make the ports on the motor go from
STOCK:



Please keep in mind, you don't want your port to look EXACTLY like this as this one is what I would call "the lean". Notice at the top of the port, instead of being ported all the way to the back of the iron, its got a little lean coming into the combustion chamber. As far as I'm concerned, for the time you'll spend doing it, this does nothing but make your motor sound mean.
STREETPORT:


In a bridgeport, the motor is made for racing. Your idle is going to be roughly around 1500-2000 depending on the size of the bridge. Keep in mind your driveability and gas mileage will be hindered depeding on the size of the port.
BRIDGEPORT:
Old 02-17-09, 08:02 PM
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omg thanks dude i understand it so much better and i want my car to sound mean haha but streetport seems the way to go i wanta good torque curve and i can always spray if i want more power out the hole. would u consider buying a fd for your first rotary cuz i got the cash cuz of all the free money from scholarships to go to coollege but i dk for my first project to get a fd but its just so sexy
Old 02-17-09, 11:00 PM
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Old 02-17-09, 11:16 PM
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The fd is a great car, and can be a great commuter car if you take care of it and do all the precautionary maintenance. Let me know when you are serious about looking for one, I think I can help you find a couple
Old 02-18-09, 08:13 AM
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man thanks bro wuts ur number man ? well with the scholarship money im getting and the money i got saved up plus the money im making this summer i should have over 12k to buy an rx7 by august-september, last summer i almost bought a n/a fc but it wouldnt turn over so i ran away from a good deal and the old lady only wanted 500 to but now im motivated to get a fd no matter what cuz its always been my dream car and if i have to i will sell my charger but its worth it
Old 02-18-09, 10:52 AM
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Old 02-18-09, 11:33 AM
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thanks man i need some help and i had plent of it when i started my charger project
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