What is CDFP?
forge bov
- Thread starter detsilverms3
- Start date
What is CDFP?
oskinosmee
Member
- :
- 07 mazdaspeed 3
That's it I am buying a MBC and MAP clamp. I want 18PSI!! LOL!!!
CdFP= Cam Driven Fuel Pump
Even with my mbc and bcd it doesnt hold
Not unless one of you guys installed it when I was not looking...
Was just a lil confused about you saying hitting 18psi or something. You just spiking to that in higher gears?
Yes. 5th and 6th. Also note that I've not verified that the BG is completely accurate so it may be off by a notch or so...
patty AT forge
Member
Concerning maintenance on the valves, we recommend checking them periodically, length of the intervals really depend on conditions where the car is driven. Extreme cold, extreme hot, dusty climates require more frequent checks.
Servicing every oil change would be EXTREME overkill. There are people that have one of our valves for 5 years without a service. BUT that isn't recommended. I typically suggest doing the "pen-test" every six months or once a year to determine if the valve needs to be serviced. The pen-test is detailed in this PDF:
http://www.forgemotorsport.com/media/valve_service(1).pdf
Servicing every oil change would be EXTREME overkill. There are people that have one of our valves for 5 years without a service. BUT that isn't recommended. I typically suggest doing the "pen-test" every six months or once a year to determine if the valve needs to be serviced. The pen-test is detailed in this PDF:
http://www.forgemotorsport.com/media/valve_service(1).pdf
Rock on ill
Last edited:
Thanks for the help!
different springs for different boost levels
Blue.
You like the blue?? really? I seem to get surge using the blue spring.... I am running the yellow and a shim.
patty AT forge
Member
Here is the way that we typically rate the springs:
Black <10 (made specifically for the MSP)
Green 5-15
Yellow 15-23
Blue 23-30
Red 30+
That being said those numbers were derived based on our replacements for the Bosch 25mm valve used on a VW/Audi 1.8T. From what I've gleaned with our prototype hybrid valve for the MS cars the 2.3 requires much greater spring tension than the VAG 1.8Ts.
Tentatively I will extend the following:
Blue - stock boost
Blue with shims - <20
Red - >20
Input?
I've already asked that all future valves come pre-installed with the blue spring.
Black <10 (made specifically for the MSP)
Green 5-15
Yellow 15-23
Blue 23-30
Red 30+
That being said those numbers were derived based on our replacements for the Bosch 25mm valve used on a VW/Audi 1.8T. From what I've gleaned with our prototype hybrid valve for the MS cars the 2.3 requires much greater spring tension than the VAG 1.8Ts.
Tentatively I will extend the following:
Blue - stock boost
Blue with shims - <20
Red - >20
Input?
I've already asked that all future valves come pre-installed with the blue spring.
cool! is this just the rates for the hybrid valve? Everyone seems to be using the blue spring on the BPV. However i was getting lots of surge at partial throttle med boost situations. Any advice ?
Last edited:
patty AT forge
Member
Not for the hybrid at all, it uses a conical spring and tension is adjusted by a ratcheting knob. The fact that the spring we use for the VAGs isn't stiff enough at the highest tension to get the spring to seal at idle on the 2.3 made me think to look into spring tensions on the MAZ3 valve.
Are you saying you would get surge while accelerating under those conditions or when lifting the throttle from one of them?
Are you saying you would get surge while accelerating under those conditions or when lifting the throttle from one of them?
Surge was using the blue spring and lifting off the throttle yes..
Last edited:
thats what i told patrick r. when i tested these for you guys....blue spring for sure. i am in the middle zone right now. i am at 19-20 psi. i like the sound of the blue +2 shims better, but the little voice in my head keeps telling me to keep the red one in.
OK i must be doing something wrong can anyone verify ??? i am at stock boost using the yellow spring because when i lift of the gas my car doesent surge. Using the blue spring i get surging. Am i just crazy ??
