EGT Cylinders

Discussion in 'Race 400/430/455' started by Robs455, Aug 4, 2023.

  1. Robs455

    Robs455 Well-Known Member

    Hi folks

    I am considering monitoring the temperatures of each cylinder bank. The question now is where I can measure the temperature. In the collector flange or at the top of a cylinder e.g. 7 + 8 ?

    Has anyone ever measured the temperatures of all 8 cylinders?
     
  2. Stevem

    Stevem Well-Known Member

    Many of the top dyno operators will want to monitor all 8 ( or however many ) cylinders at the Exh flange of the head at the same time so that 8 separate pulls do not have to be made.

    Making checks at the collector is no going to tell you what you want to know !

    One builder / dyno owner who now is unfortunately retired passed along this great bit of info to me a few years ago .
    He said that by doing enough EGT test over the years he found that Exh gas temps of a cylinder will rise 30 to maybe 40 degrees for every degree of timing that the cylinder wants, but does not get!

    A well designed Intake ( Mainly single plane ) is crucial to achieving this kind of even fuel distribution!
     
    TheSilverBuick and patwhac like this.
  3. Bens99gtp

    Bens99gtp Well-Known Member

    I have 2 in my headers. 1 on each side. There is clear instruction on where on the pipes to put the probes to get a proper reading. They can't be too far or too close
     
  4. Mark Demko

    Mark Demko Well-Known Member

    I noticed that on my 350, the SP3 colors the plugs evenly, with the Stage 1 DP, they were different.
     
    patwhac likes this.
  5. Guy Parquette

    Guy Parquette Platinum Level Contributor

    In the snowmobile race World there is no other way but to monitor egg’s separately. Super common or more likely than not that the pto side, middle, (if three cylinder) and secondary side would be all jetted differently.
     
  6. 12lives

    12lives Control the controllable, let the rest go

    Riv's use a over temp sensor at the 7/8 position. It screws into the cylinder head in one of the back accessory bolt holes.
     

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