I recently bought a 20b cosmo and was going to do an overhaul on the engine. I bought the car and it had a blown rotor at the time. The car is 100% stock. I pulled the motor out 2 weeks ago and tore it down to the short block. Haven't had any time to work on it due to classes. After I bought the car I bought a fuel system for it. I ordered from k2rd.com the secondary fuel rail, 3x 1600cc injectors, 2x walbro pumps, and I was going to run stock primarys. Since then I bought a full tune 20b FC without JCI. It is running 6x 1000cc injectors with stock fuel rails and it has 3x bosch inline fuel pumps. Which is the better setup? It seems the 6x 1000cc setup would drink more fuel but be more tuner friendly whereas the other setup with secondary 1600's would be better on gas but harder to tune. Not real concerned with gas mileage but if it's not neccesary to waste the gas I would rather not. Any thoughts would be appreciated. Thanks.

-Destin

 

a lot of variables come to play a role here,.. porting , turbo size , boost ....plus what use will the car be for???
i like the three pumps deal (altough i am not to shure about the in-line thing ) but i guess you cant go wrong with too many pumps
to me i would prefer the 2 intank setup with 3x1600 and 3x1000 ,but then again my needs are diferent

 

It has 13b hosings and stock ports. The turbine is a bb t51 r kai and will not be running more than 1.2bar with motec m8 and boost is controlled through the ecu. Primarily will be driven on the weekends and maybe a couple of times at the track.

-Destin

 

Limitations is due to tuner capability.
Either system will work, but I dunno how 3 fuel pumps can work nicely.


-Ted

 

I was messing with the fc a little more today. Switched m8's and cleaned up the plugs. Anyways there are 3 fuel pumps. 1 pump is always running and filling the collector tank. The other 2 pumps are inline supply pumps and they are both on 2 seperate toggle switches. When cold I always have to hold the gas a little because it stalls. After it warms up it idle hunts just a little and will stall alot when trying to engage the clutch. I flipped one pump off later after the car was cold again and the idle hunting cleared up. Also clutch engagment is so much smoother. Since I have to have a retune later for the t51 I might throw the 1600 secondary's in. Is that overkill if I plan to only run 1.2?

-Destin

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Surge tank / swirl pot!
Now that makes a lot more sense!


-Ted