Mazda Rotary Club

Cars by Model Type => 1st generation RX-7's => Topic started by: kiwi-mick on March 31, 2010, 09:16:12 PM

Title: fuel injecting a 13B bridgeport
Post by: kiwi-mick on March 31, 2010, 09:16:12 PM
hi all anyone got any idea what kind of power an injected bridgie could produce.
Title: fuel injecting a 13B bridgeport
Post by: RamoNZ on March 31, 2010, 11:24:39 PM
A 13b bridge may not actually produce more peak hp, but it is the driveability that will improve, as would power from idle to about 6k through more accurate fuel delivery. Bearing in mind that power is all about airflow and fuel added that matches that air.
 
Saying that, depending what state the engine was in i.e. new/used rotor housings I would take a stab at about 220-240hp.
Title: fuel injecting a 13B bridgeport
Post by: kiwimazda on April 01, 2010, 06:32:06 AM
I would have thought a well built carbed one would make that. Or thats what I have been told anyway
Title: fuel injecting a 13B bridgeport
Post by: HaywardRotary on April 01, 2010, 08:53:55 AM
Alot depends on size of carb and the exhaust and how free flowing it is.
If you have a completely unsilinced exhaust on an naturally aspirated appliction it will make more power.
If silenced to around 105 db you should get around 250hp to 280 hp depending on the ports.
Regards
Carl
Title: fuel injecting a 13B bridgeport
Post by: mpk490p on April 01, 2010, 09:19:04 AM
Carl, what about a bridgy 13b 4port with a 51ida? would their be much difference in using a 6port?
Title: fuel injecting a 13B bridgeport
Post by: kiwi-mick on April 03, 2010, 11:35:21 PM
Quote from: HaywardRotary;683671Alot depends on size of carb and the exhaust and how free flowing it is.
If you have a completely unsilinced exhaust on an naturally aspirated appliction it will make more power.
If silenced to around 105 db you should get around 250hp to 280 hp depending on the ports.
Regards
Carl

my lord i tryed the free flow today, not an option,I think one of my ears started to bleed, these damn things are too loud with nothing to scilence them down.