36# injectors, 10#'s of boost...

[Goliath 5.0]

...no Fmu, what fuel pressure do you think would be a safe fuel pressure setting to have the vehicle at with those injectors and that amount of boost from my v1 s-trim.

Mods listed below for my 93 Cobra:

Ported Cobra Upper and Lower Intakes
Ported GT-40 Head
Mystery Crane Blower Cam from La Rocca Performance :D LoL!
Accufab Adj Fuel Pressure Regulator
FMS 36lb injectors
C&L 80MM Mass Air Meter (Calibrated for 36# injectors)
AFM PowerPipe
MSD 6a-BTM (Ignition Box with Boost Timing Master, Soft-touch rev limiter)
Base Timing @ 10* Dial set to 1 on 93 pump gas with octane booster.
Mac 1 5/8 Long Tube Headers
Mac FlowPath Mufflers (full exhaust)
Thirteen Naked Elfs (hand spinning the s-trim) injected with 130.9 cc's of Redbull (each)




Thanks in advance guys!


-Chris

[Brcuda]

There is math you can do and get close as well as safe. Tell me about how much horsepower you expect to make. Do you have any track times and most important miles per hour that the car has ran.

The equation is base on estimates or measured values of engine horsepower, and Brake Specific Fuel Consumtion (BFSC).
Engine hp has to be realistic. Lie to it and the equation lies back.

[Goliath 5.0]

Originally posted by Brcuda
There is math you can do and get close as well as safe. Tell me about how much horsepower you expect to make. Do you have any track times and most important miles per hour that the car has ran.

The equation is base on estimates or measured values of engine horsepower, and Brake Specific Fuel Consumtion (BFSC).
Engine hp has to be realistic. Lie to it and the equation lies back.

The car has not ever seen track time :( and probably never will as this is just a street cruiser and I don't want to put a nice car like this through the rigorous wear and tear the track will assess on the vehicle.

As for horsepower, if I can break into the 400 realm "realistically" with my current setup that would be great. I am not sure where I am at horsepower/torque wise.

Haven't Dyno'd the cobra yet, but I will end up doing so by Feb!

[Brcuda]

Where do you have your fuel pressure set with the vaccuum off?

[Goliath 5.0]

At idle the car is @ 45psi .

Forgot to mention that there is a T-Rex inline fuel pump installed and an intank Walbro gss340 255lph fuel pump.


Thanks Brcuda!,

Chris

[Brcuda]

Being at 45 psi and if your fuel regulator is boost reference, at 10 lbs of boost you are going to 55 psi at full boost.

I ran 36 pound injectors with my Kenne Bell, mine was also set at 45psi, and I made a max of 417 hp when the car would run 117+ mph. This was with 11 pounds of boost.

[blown94]

As for horsepower, if I can break into the 400 realm "realistically" with my current setup that would be great. I am not sure where I am at horsepower/torque wise.

You should make mid 400's with a good tune. My 94 with with a B-cam and 1:7 rollers and 10psi with out a tune laid down 410/400. That was with my a/f at 11.0 @3500rpms and it kept falling as the dyno continued finally ending up well below 10.0. You will probably need some more base timing mine was set a 12*. But 400 shouldn't be a problem.

[HotPony]

I have a very similar combination, S-trim (11lbs), GT40 heads, 1.7 rockers, b303 cam, stock intake/throttle body, BBK long tube headers, 42lb injectors, 80mm C&L, and I have a STOCK fuel pressure regulator on there! Ahh.. I'm only seeing 33psi of fuel at idle and about 42psi at WOT.. I guess I'm running a little lean probably!! I have a 190lph in-tank and a T-rex. Although I have a Cyberdyne fuel pressure regulator so maybe that's inaccurate. But I have a Paxton fuel pressure regulator I can put on, just haven't had time. I also don't really have an ignition system, only a Blaster coil. Need to get a 6BTM! Motorcraft AWSF32C's gapped at .035!

I'm not detonating as far as I can tell, but I haven't had it on a dyno yet and have only drove it a couple of times as I just installed the vortech a couple weeks ago. LATERZ

[blownaway]

What do you think of the B cam? I have not run my new combo yet but have heard that B cams were not that great for S/C apps. I guess we will see.

[Brcuda]

When it comes to the motorsports cams the F-cam would have been a better choice.

[HotPony]

YA YA YA!! but i had this car as a N/A vehicle and wasn't really planning on the S/C, but what do you know, it's a really nice combo I think, if anything I'd go more for an Anderson B cam or something if I switched, I've had the F303 with a blower before and frankly I wasn't too impressed over the B303, this has mad pull :)

[blownaway]

That makes me feel better about my B cam.. I was about to pull my motor back apart. It is so close to running but I'm going out of town for a week. I will have to wait.

[HotPony]

Yeh just run it until you get sick of it or need more pull, i'm seeing about 11lbs of boost right now and that's at about 5K when it starts cutting out because my ignition system is stock.. :(

[blownaway]

Someone told me that they lost boost with the B cam cause of all the overlap. That might be a good thing because I have a stock block without a girdle. By the way, do you have idle troubs with your car. I have heard some wav files and such of "B" cam cars. and it sound pretty wild at idle.

[HotPony]

none at all, actually idles better with the charger than it does without! every once in a while it'll surge a little but i also have an 80mm c&l maf..