82streetracer

iTrader: (1)

Who is running a bridgy on the street.

I want to run a bridge but I am worried about having to drive in traffic with it.

It is my understanding that drivability is pretty much non existent under 4000.

I am talking about the small bridgeport available from mazdatrix.

I am thinking a weber 48 or a 50. probably a 50.

I dont think just cruising would be a problem but I am worried about having to go in traffic with the bridge.

Also, what is the average life expectancy for this engine.

WackyRotary

yo, check your PM's

peejay

Get some 4.778's and forget gas mileage

pp13bnos used to run a peripheral on the street, hopefully he'll come in here and let us know what kind of mileage he got

My street port only got about 9mpg in the city, in cold weather, never getting off the choke... so a bridgey is probably about that if not less. (Who cares?)

WackyRotary

I typically get 14-17mpg on the bridgeport I made. It seems to get pretty good milage if I don't acelerate past 6000rpm. Anything beyond that and I'm right at or below 14mpg. I DON'T live in a big city, so I know that helps.

Rotortuner

My 12a pp gets about 10-12 mpg.

CJG

Rotary-MG

iTrader: (1)

So how's that like in traffic? Stop and Go.
I imagine you'd be going through a bunch of clutches.

Defprun

I'm thinking about running a bridgey now. Wich one lasts longer again? A pp or a bp?

REVHED

Depending on how heavy your right foot is a pp and bp should last about the same.

82streetracer

iTrader: (1)

i thought it was just really large BP that cut into the rotor housings that fucked the engine. I am looking at a fairly small bridge port.

I am looking to produce about 200-220 hp.

mperformance

I got the same plan...about 210hp

Directfreak

iTrader: (2)

As long as the bridge doesn't go into the water jacket, it'll be fine.

REVHED

Even normal bridge-ports require a chamfer to be cut into the rotor housing to flow properly. It's when the port breaches the water jacket that engine life will sufer because the sealing eventually gives way. These are usually called J or monster ports BTW. Here's a nice example.