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  1. #1
    RUNWME's Avatar
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    Tuning help...Who sells EGT gauges for the GP1300r?

    On outboard engines, EGT probes were invaluable in engine life and tuning, but I dont see them talked about much on jetskis...... Does anyone sale a exhaust gas temperature gauge for GP1300r ? Mine is EFI 2005
    Thanks
    Last edited by RUNWME; 10-14-2007 at 08:19 PM.


  2. #2

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    I'm using the digatron 3 display on my ski. It can handle many inputs and you can download up to 2 hours of info on to your laptop.
    Mike

  3. #3
    billy's gpr's Avatar
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    is it possible to fit egt to single pipe motor,my triple has it there awesome

  4. #4

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    Billy - yes. I think Fercho drilled/tapped/welded bosses on the exhaust manifold to be able to install one probe for each cylinder on his single piper a while ago...

    Run - Exhaust Gas Technologies also makes stuff for PWCs...I have a Hot Tach III but their website shows some newer stuff:

    http://www.exhaustgas.com/Catselect....sub6&BasketID=

    enjoy,

    Ray

  5. #5
    RUNWME's Avatar
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    Which cylinder typically runs the hottest or has most troubles? Front, middle or back?

  6. #6
    mrbtd's Avatar
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    Quote Originally Posted by RUNWME View Post
    Which cylinder typically runs the hottest or has most troubles? Front, middle or back?
    Back (#3)

  7. #7
    billy's gpr's Avatar
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    number one always runs hot on ny super stock ski

  8. #8
    RUNWME's Avatar
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    Seems like reading posts, and mrbtd most have problems with number 3.

    Turns out i already had a digital egt with min/max temp recalls already in my OTC multimeter. Tested with a match and it reads higher then 1600 degrees, so I will drill a small pin hole into # 3 exhaust and epoxy the lead into it. Will be very unobtrusive in the exhaust port.

    Good thing about this, it can easily go from ski to ski ( i have 3) for only the cost of extra sensors

    I just wish I had thought to do this before replacing prop and ride plate. Completely base stock numbers would have been good. If its anything like a racing 2.5 mercurys, going up in pitch a number or 2 decreases exhaust temp. Running a 32 cleaver would drop my pyrometer 175 degrees over a 26 yammi drag prop at part throttle cruising.
    Last edited by RUNWME; 10-09-2007 at 11:39 AM.

  9. #9
    JLewis's Avatar
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    i was wondering the same thing. i wondered on how to mount the sensor bung. My stock egt bung isn't long enuff to make it all the way thru the water jacket and into the exhaust jacket. I made a fitting, but am really scared it might leak water into the exhaust jacket, which isn't a good thing. do they sell a longer shank bung?

  10. #10
    RUNWME's Avatar
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    Is it waterjacketed where it comes out of head? I was going to drill about 1in from mounting flange into manifold. Is that solid in this area or water jacketed?

    Glad you bring this up before i pull out my drill

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