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Thread: Spark Plugs

  1. #71
    Administrator Steve Pierce's Avatar
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    Default Re: Spark Plugs

    Good information. Last time a Champion rep was by here he blew it off and no change. I don't talk to them about their products at S&F and OSH I am usually talking to Joe Logie about magnetos.
    I have had good service out of Tempest both in service life and corrosion and at $4 a plug cheaper for massives and $25 a plug less on fine wires I will probably keep using them. Will keep an eye out for the corrosion issue.

  2. #72
    Administrator Steve Pierce's Avatar
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    Default Re: Spark Plugs

    I don't have any Tempest plugs in my tray. The 4 on the left are Unison Autolite which Tempest bought and the two on the left are Champions. I have Champions that are not rusty as well. You can see that I wire brushed the fine wire furthest to the left and put some primer on it because of the rust. I wonder if Tempest has changed the process Unison used for plating the plugs.
    20170912_095042.jpg
    Last edited by Steve Pierce; 09-12-2017 at 10:04 AM.

  3. #73

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    Default Re: Spark Plugs

    Steve, do you think I would be better off running the REM37BY instead of the REM 40E in my Colt's O-235C1B? I lean aggressively now on the ground and don't have much lead fouling. I was concerned that the REM37BY plug doesn't have the the massive electrodes and that they may wear down quicker. Also wondering about how they protude further into the cylinder and maybe run hotter because of that. Thx, Kirk '61 Colt 1550 hours TT.

  4. #74
    Administrator Steve Pierce's Avatar
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    Default Re: Spark Plugs

    The fine wire plugs last a lot longer and are less prone to lead fouling. I haven't seen any more wear with the BY plug over the E it is just harder to measure for no go. They usually last about 500 hours in my experience.

  5. #75

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    Default Re: Spark Plugs

    Quote Originally Posted by Kelliots View Post
    Steve, do you think I would be better off running the REM37BY instead of the REM 40E in my Colt's O-235C1B? I lean aggressively now on the ground and don't have much lead fouling. I was concerned that the REM37BY plug doesn't have the the massive electrodes and that they may wear down quicker. Also wondering about how they protude further into the cylinder and maybe run hotter because of that. Thx, Kirk '61 Colt 1550 hours TT.
    In a past life, I flew a Tomahawk extensively as a commuter plane. The O-235-L2C in that plane really liked the REM37BY in the bottom plugs. The longer protrusion and fine-wire kept my problems with lead fouling way down. Even leaning from start-up to take-off and then in cruise I typically couldn't get 25hrs before changing the bottom set of 40E plugs. With the BY plugs I doubled that or more. If I added MMO to my fuel I could almost double it again. MMO and the 40E plugs didn't change my fouling issues much.

  6. #76

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    Default O-320 spark plugs

    Which performs best in an O-320 Lycoming? REM38E or REM40E?

    Thank you

    Bob

  7. #77

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    Default Re: O-320 spark plugs

    Iíve always used REM40Es. The higher the number, the hotter the plug. A hotter plug should be less prone to fouling. If you were actually comparing REM40ES to RHM37BY, the 37 BY will last maybe 3 times as long, but costs 3 times as much.


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  8. #78
    Gilbert Pierce's Avatar
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    Default Re: O-320 spark plugs

    I use UREM40E. The U indicates manufactured by Tempest.

  9. #79
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    Default Re: O-320 spark plugs

    Same as Gilbert for almost the last 1000 hours
    "Progress is our most important problem"

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