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mech5107

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Posts posted by mech5107

    2e-telu turbo questions.

    in Intake, Turbo & Exhaust

    Posted

    Why you took them off? 

    Anyhow, ct9 can do 150 whp, more is difficult. You should just need FMIC, some decent exhaust turbo back and just about all the boost without hitting boost cut. I was running 0.8 with the stock ecu.

    Do you plan to change the exhaust manifold. Since you have it out, it's a good oportunity to get one done. I think the stock manifold is too restrictive. I would be interested in a stock location manifold also.

    2e-telu turbo questions.

    in Intake, Turbo & Exhaust

    Posted

    I also have 2etelu in my ep70. Running toyota diesel C turbo, 60mm decat and full exhaust, FMIC with 50mm pipework, rx8 red injectors and standalone ecu.

    Those engines run fine with a T25 at 0.7-0.8 bar for about 180hp, but don't forget that most of those engines are now 30years old.

    On screen ECU information?? - ZF TOYOBD1 Data Logger

    in Electronics

    Posted · Edited by mech5107

    Hi mate, congrats on the tool. Perfect to get the some info on the stock map of the 4efte and have a good base map for standalones.



    About the formating, it would be easier for everyone if it was exporting the log like most data loggers do



    First line goes like: Time,TPS,RPM,ECT,Inj,Ign,....


    Second line are the units: sec,%,rpm,degC,ms,deg BTDC,...


    Third line and on are the data for each timestep.



    I can provide a sample log if you like...


    bigger brake master cylinder

    in Braking

    Posted

    It's pretty easy...



    If you running single piston/2piston sliding caliper (like levin), then find the size of the piston (say 51mm) divide by 2 (so 25.5) and then muliply by 3.14 (80.47) and then multiply again by the half diameter (25.5) so it's 2041.785.


    This is the area of each piston. If you have single piston, then multiply by 2 (the caliper is moving to acomodate that there is no piston in the other side, so the master cylinder is actually like moving twice the fluid.


    If you have twin pot then multiply by 4.


    If you have 4 piston, multiply by 4 again.



    This is the area of your pistons in the caliper.



    Now say you run a 7/8" master. Multiply 7/8 by 25.4 (22.225mm), then divide by 2 (11.1125), multiply by 3.14 (34.89325) and multiply by the half diameter again (11.1125). Total is 387.75. This is the area of your master cylinder.



    So if you pad to disk clearance is 1mm, then the pistons of the caliper has to move 1mm so the volume of fluid to be moved is 1 by 4083.57 (for a 51mm single).


    Your master has to move by 4083.57 divided by 387.75 = 10.5314mm.



    Also if you need say 10000newtons to push the pad to the pad to the disk (in order to brake), then your needed fluid pressure is Force (10000) divided by the area (2041.785 for the single 51mm). So 4.897.


    To achieve that, you have to apply force to your master cylinder equal to pressure (4.897) multiplied by the area of the master cylinder (387.75 for 7/8"). So 1899N.



    LONG STORY SHORT:


    You have too much pedal travel for your like but good braking? => Increase master cylinder size


    You need to puch too hard to achieve decent braking? => Decrease master cylinder size


    You don't have much travel, you have good braking but the pedal feels soft? => Decrease booster size


    You have good pedal travel, too hard pedal and not good braking? => Increase booster size


    Your pedal travel is perfect, your effort is perfect but can't get good braking? => Change pads and disk size



    In any case you need to take something as reference (your current setup/feeling) and decide what you like and what not. Then act accordingly.


    There is no correct or wrong answer.


    bigger brake master cylinder

    in Braking

    Posted

    A bigger servo would probably would make the pedal even lighter.



    You need a bigger master cylinder... but don't overdo it, as the bigger the master cylinder, the bigger the force you need to apply to the the pedal.



    I would say that the sweet spot for stock gt calipers is 15/16


    Injector advice

    in Ignition & Fueling

    Posted

    Although not much need for new injectors for stock turbo, if you want to really upgrade, get at least the newer style (slim plastic body) injectors.



    RX8 red are 350ish and RX8 yellow are 430ish and usually cheap in the breakers.


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