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  • sorry Beans I'm a little confused.....

    are you saying you know the reg will be closed under boost or that the fuel pressure goes up when you choke off the return line.as described ^^^

    Running this stock reg means you have little control of fuel pressure... effectively it is governed by your pulsewidth.


    I thought you said the fuel pressure dropped off at 6k rpm..... that's why I went in this direction.

    You'll need to explain what the load / high RPM / WOT issue means in more detail .

    Did you data log the fuel pressure during your dyno session ?

    did you zero / datalog your fuel trims ? What are they now ?



    I'm trying to get you to post up information so guys can chip in based on what you say..... if I'm not helping, say so and i'll step back and let someone else work through things with you. .... G.
    ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

    WANTED; Custom gauge guru for ST200 overlay job... pm me..

    Comment


    • Bad fuel pump as i thought.
      '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
      '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
      '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

      Comment


      • No one prob cares but the tune is 90% finalized. It's a rocket.10psi on a normal day.



        The sub 50degree days i was hitting 12psi. Anyone who says stock gearing is good at this power level is grade a full of ****.
        '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
        '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
        '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

        Comment


        • Nice. I guess I am not making the power in the same or something. Never really had an issue with the stock gearing.

          experience does differ
          - 12 Focus SE
          - 99 Contour SeVT <- 3L/NPG Turbo
          - 2k Contour SVT - #2137

          Comment


          • Yeah it's really bad, 2nd feels like the car did n/a in first gear it lights the 245's with ease at the top of the power band.

            '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
            '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
            '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

            Comment


            • ooooh someone's been a busy boy..... some mighty Purdy welding.

              Hope you're gonna do a 'how to' for the transmission final drive. I have another box to do and I didn't see the first one being done ....G.
              ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

              WANTED; Custom gauge guru for ST200 overlay job... pm me..

              Comment


              • Maybe. If i do it will be on NECO i got quite the collection of parts for the next step when the motor goes :P
                '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
                '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
                '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

                Comment


                • ...... I was reading a guy's account over here about his 3.0L Vortec which he described as a bit too much of a revvy screamer..... he switched to turbo.

                  Now you've had your car running for a while ....how's it running? .....pro's/ con's ?
                  ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

                  WANTED; Custom gauge guru for ST200 overlay job... pm me..

                  Comment


                  • It's okay. gearing is too short still. Tune is pretty good but could use a bit more work. It's loud i guess? But the power is more usable than a turbo, less torque. I don't really care for how it sounds, but the extra power is a double edge sword, it's welcomed but traction is.....ermm not good

                    Took it to autox today

                    https://youtu.be/bgayyhyzz3w?t=19
                    '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
                    '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
                    '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

                    Comment


                    • .... on the noise issue; are you still running the oil supply from the rear head ?

                      I could hear the whistle from the vid...... are you talking about gear noise ?

                      I'm thinking about using the oil gallery on the front of my next engine block. ...G.
                      ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

                      WANTED; Custom gauge guru for ST200 overlay job... pm me..

                      Comment


                      • No talking about the whistle from the blower. its pretty loud in car. Yes still using oil supply from the head,

                        The block gallery might be too much PSI, not sure.



                        I'll have some more photos.

                        '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
                        '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
                        '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

                        Comment


                        • .... might ask around about some kind of pressure reg.... maybe more pressure equals better atomization.

                          What kind of fuel milage are you getting if you just drive sensibly ? if that's not a silly question ha ha.

                          more pictures is always good .. ....G.
                          ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

                          WANTED; Custom gauge guru for ST200 overlay job... pm me..

                          Comment


                          • No idea. I have to fill up early the gas tank will starve the fuel pump in boost at just above 1/4 tank.

                            Junky fuel tank design
                            '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
                            '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
                            '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

                            Comment


                            • .... which spark plugs are you running ?

                              do you have a knock sensor wired up ? ....G
                              ST24. LPG, 2001 ST200 motor, 65mm P&P'd TB, 80mm MAF, headers, lowered, sway bars and strut braces, 300/278mm brakes, 3.51 FD 3.0L tranny, Torsen, Fidanza.... Vortech nearly completed.

                              WANTED; Custom gauge guru for ST200 overlay job... pm me..

                              Comment


                              • Yes i wired in a knock sensor. Using NGK plugs they were posted earlier in this thread.

                                Here is a pic of more of it's ugliness. Needs paint.

                                '98 SVT E0 BLK/MNB#1663 3L Always broke. - Now with a supercharer for even less reliability! Not sure if fun.
                                '99 SVT E1 BLK/TAN#0741 Sold. Lots of fun.
                                '07 MAZDASPEED3 GT Reliably quick groceries. Sorta Fun

                                Comment

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