TheAbsence

iTrader: (19)

bad 83, how does the engine run with the stock computer? Are you running larger injectors and other supporting mods?

bad 83

iTrader: (3)

The car hasn't been dynoed yet, but hopeing to push over 200rwhp. We are running 550 primarys, and 680 secondarys. The S4 computer is pretty stupid, so as long as you have big enough injectors, set your timing, tps and air/fuel trim, it doesn't care. The S4 computer doesn't screw with the timing like the S5.

bad 83

iTrader: (3)

Driving the car with the S4 fuel injection is actually pretty nice. It drives like a typical bridgeport, but alot smoother.

iani1.1

iTrader: (13)

what does it idle at?

bad 83

iTrader: (3)

The bridge is happiest at an 1800 idle. It doesn't dip when you pop the throttle, and no hesitation when you punch it from idle. Ito really intrigued me with his setup, so I wanted to try one for myself to see what potential a 6port bridge really has. I must say it is very responsive, and runs awsome. I had been wanting to do one for quite a while, because everyone around me wants to ditch their 6 port engines for 4 ports. I am building a 4 port TII engine for another friend of mine to put in his S5 vert. So, I should have another 6port block to play with

RX200013B

bad 83, can you tell us more about your s4 n/a bridge,

how is the power band w/ the s4 ecu? where does it limit you on rpm's

stock intake? what other mods you using w/ your set-up?

gtu-bridged

thats what ill be running very soon. a friend of mine is building and bridging my 6port with 550cc primary and secondaries, all bolt ons and using a s4 N332 ecu

drewski86

I hope not.

gtu-bridged

i know its the turbo ecu but i still have the NA one.. they wanna give it a shot to see how it runs the 550cc inj..

drewski86

You're going to want an ecu that you can adjust fuel and spark maps. It will more than likely "run" with a stock ecu, but you will be sacrificing a LOT of power and drivability.

gtu-bridged

yea im already looking into getting a megasquirt soon, but just gonna have to use either the na ecu or the turbo one for now

87base RX-7

out of curiosity what are you seeing fuel economy wise?

gtu-bridged

me?.. my motor isnt done yet, maybe by the end of the week itll be in the car

Hyper4mance2k

iTrader: (40)

fuel economy and bridge ports shoudln't even be talked about in the same paragraph. I doubt any BP could ever muster out more then 15mpg.

BDC

So you say.

B

nillahcaz

iTrader: (2)

so I'll get flamed if i say i got 21 MPG highway with mine.....

BDC

Nope you won't as I got the same thing several years ago.

B

Hyper4mance2k

iTrader: (40)

Wow. Well I need to be a little more "green" and build a bridge port then.

Jeezus

iTrader: (4)

Update on teh 6port bridge motor, spun every bearing in the motor. 1 rotor is no good. Ran like a raped ape, just had a knocking sound. I have pictures of the bearings if you would like.


Motor got rebuilt and dropped back in

Hyper4mance2k

iTrader: (40)

pix are a must.

ultimatejay

iTrader: (1)

Yeah, I can get 21 mph too if I leaned the crap out of my carb and ***** footed the car all day long.

RX200013B

do you know what caused the knock, what injectors/ecu were you running?
what rpm did it blow?

nillahcaz

iTrader: (2)

and that is why no info on my build has been / will ever be given out.

ultimatejay

iTrader: (1)

What's the big secret?

BDC

Seriously, I did it on several all highway trips back in the day when I was driving back and forth to New Orleans. It right at 300 miles on the tank (S4 turbo). According to my gas receipt and some 2nd grade math, I calc'd it out at 21mpg.

B