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About rogerguzzi

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    Fast Driver!
  1. Trigger Wheel Mounting Vitesse

    Hello John Just create 2 maps one high end of WSM and one racing curve but suspect you wil need a RR session to find the best one! Then you can just switch on the fly if you want (look out F1) Plus you can make lots of maps and just save them and once you have one you think is near just keep trying the others as second map It is different for me I just want a drive able car and good MPG at cruising Roger
  2. Trigger Wheel Mounting Vitesse

    Hello John Welcome to the electronic world were most things do not make sense(its all smoke and mirrors!) But when you get your head around it it seems to work! (back to smoke and mirrors) if someone asks how it works use some big words and waffle on a bit until they glaze over then you are off the hook! Roger ps how old are the grandchildren? they would understand if 10 or above!
  3. Trigger Wheel Mounting Vitesse

    Hello All I use one of these on Microsquirt PRT 03/04 I found the 2.5 to coarse a calibration they are all 0 to 5v so it is more sensitive. MAP sensor.pdf Roger
  4. Trigger Wheel Mounting Vitesse

    Hello John I think it is the other way around! Low vacuum with open throttle high vacuum low throttle This may explain it? http://www.fastfieros.com/tech/map_sensors_and_how_they_work.htm Roger ps and the scale is reversed on MJL
  5. Trigger Wheel Mounting Vitesse

    Hello Alan Vacuum drops so ignition is retarded Roger
  6. Trigger Wheel Mounting Vitesse

    Hello John I just measured length and width 74mm x 45mm(average) added them 119 divide x 2 = 60 approx Which with 0.020"(0.5mm) gives 1.4cc 74mm dia gives 2.15cc a bit crude but probably close enough? Biggest chamber is 42.4cc + gasket (74mm x 0.7mm = 3cc) 45.4 Cylinder is 378.36cc + 45.4 = 423.76 / 45.4 = 9.333 to 1 So skim 2cc off = 0.028(.7mm) = 421.76 / 43.4 = 9.717 to 1 I think? Roger ps I think I will have 0.030" skimmed off I can always open the chambers a touch if necessary? they are within 0.3cc at the moment so will do final balancing when valve seats have been cut to the 3 angle
  7. Trigger Wheel Mounting Vitesse

    Hello Alan and John If you set it as the MJL instructions. Configuring Normally Aspirated or Forced Induction Check the 'Normally Aspirated' box if that matches your engine type. This setting will scale the load axis for the runtime and logging views to 103KPa maximum. Otherwise, leave the box clear if your engine is turbocharged or supercharged. This will set the maximum scale to 255 KPa (approximately 21 PSI of boost) I do not think you will ever get to the minimum of the map! They say 103KPA which is 30in mercury and the WSM chart shows 20in mercury = 68 KPA I think you edit it in RPM and load bins then you can alter it to reflect what you get?(I think?) ask Nick This one of the maps I used on Spitty This site will do KPA to ins http://www.kylesconverter.com/pressure/kilopascals-to-inches-of-mercury
  8. Trigger Wheel Mounting Vitesse

    Hello Alan Do not forget your map is 10 x 10 not 12 x 12! John If I remember right you need to see what your max vacuum is and calibrate the sensor or scale to suit? Then you can use 0 to 100% range (I think old brain is going fast) just been going around in circles working out how much to skim off the head to get to 9.75(I like to be able to use foreign fuel when touring 97 not always available) Your write is good its just me but resorted to Tinterweb and used cylinder calculator Roger
  9. Trigger Wheel Mounting Vitesse

    Hello John I got mine from the WSM (Triumph Spitfire 1500) I assume they are in other WSM,s I found this in WSM GT6 1,2&3 Vitesse 2l part no 512947 Roger
  10. Compression Ratio

    Hello All I am about to take my cylinder head in to have the valve seats cut. I am wondering what compression ratio to have. at the moment it would be 9.3 to 1 I was thinking of 9.5 to 1 but do you think a bit higher would be better as I am going to run a 280 deg cam. Roger
  11. Trigger Wheel Mounting Vitesse

    Hello John You should be able to set the offset at +5 degrees in the software so you only need to add 5 degrees to the maps Its in Tools /Global controller options and you can go + or - 5 degrees Roger
  12. Trigger Wheel Mounting Vitesse

    Hello John If you do not move the VR sensor I am not sure your limp mode would work if ignition is at TDC I just remembered you trailer your car to meetings so not a problem Roger
  13. Trigger Wheel Mounting Vitesse

    Hello John That is good news But and there is always a but! If your VR sensor is set 10 degrees out how are you going to set the ignition map as you can only do + or - 5 degs offset in the software! Or perhaps you can fudge it in the map? but I think bite the bullet and move the sensor(you know it makes sense) start right and it can only go down hill! Roger
  14. Snow Gates

    Hello All If Flood gates keep floods out why don,t Snow gates keeps snow out? Roger
  15. Trigger Wheel Mounting Vitesse

    Hello Alan My RVC tachometer worked off the MJL output(can not remember which pin) and it works off the Microsquirt ! I thought the diode setup was for the old type that needs a big kick? Roger