has anyone replaced the factory WSM therm with a tel tru?

Discussion in 'Slicers, Grinders, Tools, Equipment' started by jerseydrew, May 31, 2013.

  1. jerseydrew

    jerseydrew Smoking Fanatic

    if so any pics and which therm to use?
  2. sqwib

    sqwib Smoking Guru OTBS Member

    I added three and love them
    Last edited: Jun 4, 2013
  3. dward51

    dward51 Master of the Pit OTBS Member

    I have the older style WSM which did not come with a thermometer of any type.  I don't know about the mounting hole on the new model with the factory thermometer and if it is a drop in fit or not.  I know you are asking about modding the new style WSM, but I'm posting this to show the size, model, install info on what I did to my old model as it will be very similar I suspect.

    I added a 3" dial Tel-Tru I picked up on e-bay for around $25 right after I bought the WSM.  I went with a 2.5" stem model.  Dial range was 50* F to 550* F, but they make several ranges and unless you want to pay retail prices, you may have to go with a different range on a e-bay sourced thermometer.  Some models can be field re-calibrated if they drift, others cannot. The GT300 I have is cannot be recalibrated in the field, but the GT300R version can. E-bay is sort of a mix, but the price is usually right.  Mine was new in the box.

    I used a step drill bit to drill the dome lid for the base of the thermometer.  I also added a large stainless steel washer and had to drill the center hold out a little bigger as well.

    That being said, I installed this in October 2005 and have had no issues with it. I do occasionally pull it to clean the buildup off the stem and check calibration.

    Last edited: Jun 1, 2013
  4. jerseydrew

    jerseydrew Smoking Fanatic

    just took the factory one off to test it out and it reads 201-202 in boiling water so it is off by about 10 degrees. also it has a 3/8 inch hole in the lid so i would have to drill the hole bigger for a tel tru. and then there is the problem that there is a locating hole so the factory threrm doesn't turn and that would be wide open.

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