Jump to content

Tommcat

Members
  • Posts

    1,221
  • Joined

Posts posted by Tommcat

  1. Just now, Doug said:

    Jim at SLP was good to work with back in the day.  Have one of there RZ reed vavle motors in a sled.

    There was alway Bruce at PSI.  His stuff was hit or miss.

    Psi was a miss on every combo i personally saw, but i know the early stuff ran strong

  2. 1 minute ago, Doug said:

    What changed the performance as far as trail sleds is the the further development of the EQU and the fail safes that are now incorporated.  Some reflash performance tunes are nothing more than to let the motor run closer to the edge.

    In the old days with carbs ran sleds so lean that as soon as you went past the radar gun or crossed the finish line you were grabbing the chock to get fuel in the motor to cool it down.

    the engine management systems are still decades behind the automotive world, so there is a lot to be gained in the future factory systems, but also a lot to be gained from a current tuner coming from the car world.

    • Like 2
  3. I've never been a speederx fan and definitely not D&D, but Black Magic had great products back in the day, and even great customer support to go with it.

    Same for SLP when Jim was there.

  4. Just now, HSR said:

    Yes isn't their petrol quite low on octane or rated differently?

    The pump gas octane is rated way different than ours, and the race fuel isnt allowed to have any lead.

    So where most of my tuning and builds are based on Q16, i have to change them substantially for the vikings.

    • Thanks 1
  5. 1 hour ago, HSR said:

    That's what I thought :bc:

    I do believe they have to be HP certified to be imported to Scandinavian countries but the numbers I saw were very safe. I think the 800 HO Poo was around 140, 800cfi low 130's.

    No idea, the stuff we sell to norway, sweden etc, is clearly "race" only and doesn't have to follow anyones mandates.

    Learning to tune around their fuel availability is always interesting though.

  6. 6 hours ago, HSR said:

    In case you were unaware Ben, correction factors look at more than just altitude. It is an imaginary number created for comparison purposes and NOTHING else. Do you sled at 60*f and 0% humidity too????

    STD Correction

    STD, or standard correction, represents one of the oldest correction factors used by the Society of Automotive Engineers (SAE). STD is also known as J607 and it uses standard conditions of 60-degrees F, 29.92inHg and 0-percent humidity. For you engine dyno enthusiasts, these factors should look familiar, as STD (J607) is one of the most popular correction factors available and used almost exclusively by NASCAR teams to compare results from chassis dyno testing to results from the engine dyno. STD is also one of the most stable correction factors, in that it has not been changed for many years and the ideal factors remain consistent.

    Altitude is not entered into a dyno for correction factor. Ambient air temp and humidity, plus station baro pressure are the only things we enter.

    Now, you can enter altitude if you need to figure out actual station pressure, if all you have is corrected pressure, like you'd get from the local weather report. Most dyno software will make that calculation if needed.

    • Thanks 1
×
×
  • Create New...