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Old 07-22-2009, 02:44 PM   #1
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Default New glow plug or not to new glow plug?

Well just the other week I bought a used Duratrax Raze ST truggy from a friend with .5 gallons on it. I tuned it on Traxxas 20 percent with the stock glow plug, and before I knew it I had 2 quarts down it in 2 weeks Engine was running like a champ, running right around 215-225, running it slightly rich. Well Im tired of buying quarts of high priced Traxxas fuel and I bought a new bottle of Blue Thunder Sport Formula from my buddy for 26 bucks.

After I cleaned my truck up and replaced the fuel tubing on the truck [before the fuel tubing was pretty short, I lengthened it up a lot, if it matters.] and today I went outside to tune it a bit. Engine fired right up, running what seemed to be rich since it was cold, and once I hit around half throttle the engine would die. Like it gave no indication of it being lean, it had plenty smoke coming out, running cold, and would just die quickly. I fired it again and it did the same thing. Im not too worried about this because I think I will reset the carb to stock needle settings.

What I am wondering is if I should put a new glow plug in for the new fuel and new tune. Ive ran on this stock plug for 2 quarts and my buddy before me for another 2 quarts. The bottomside of the plug is kinda golden brown looking. It still heats up and runs fine.

I have a brand new McCoy MC-59 plug still in the package, its the only other glow plug I have, and so do you guys think I should put this new plug in for the upcoming gallon and new tune or just tune it to my old plug?

Im worried that if this plug dies in a handful of tanks that I will throw that McCoy plug in and the tune is gonna be way off. But then again im broke so I dont want a freak plug burning accident to happen and im left without a plug =]

What do you guys think?
Thanks!
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Old 07-22-2009, 02:48 PM   #2
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Quote:
Originally Posted by Kimixii View Post
Well just the other week I bought a used Duratrax Raze ST truggy from a friend with .5 gallons on it. I tuned it on Traxxas 20 percent with the stock glow plug, and before I knew it I had 2 quarts down it in 2 weeks Engine was running like a champ, running right around 215-225, running it slightly rich. Well Im tired of buying quarts of high priced Traxxas fuel and I bought a new bottle of Blue Thunder Sport Formula from my buddy for 26 bucks.

After I cleaned my truck up and replaced the fuel tubing on the truck [before the fuel tubing was pretty short, I lengthened it up a lot, if it matters.] and today I went outside to tune it a bit. Engine fired right up, running what seemed to be rich since it was cold, and once I hit around half throttle the engine would die. Like it gave no indication of it being lean, it had plenty smoke coming out, running cold, and would just die quickly. I fired it again and it did the same thing. Im not too worried about this because I think I will reset the carb to stock needle settings.

What I am wondering is if I should put a new glow plug in for the new fuel and new tune. Ive ran on this stock plug for 2 quarts and my buddy before me for another 2 quarts. The bottomside of the plug is kinda golden brown looking. It still heats up and runs fine.

I have a brand new McCoy MC-59 plug still in the package, its the only other glow plug I have, and so do you guys think I should put this new plug in for the upcoming gallon and new tune or just tune it to my old plug?

Im worried that if this plug dies in a handful of tanks that I will throw that McCoy plug in and the tune is gonna be way off. But then again im broke so I dont want a freak plug burning accident to happen and im left without a plug =]

What do you guys think?
Thanks!
the mc59 is extremely hot for a big block engine , you run the risk of the filament blowing through the engine . if you can only find mccoy plugs , try a mc8 or mc9 .

monty
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Old 07-22-2009, 05:22 PM   #3
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Thats the plug that lots of my buddies use on their Losi 8ight T's when we race for fun, and they run faster with much cooler temps much easier than I can. Of course I just have a supertigre engine when they are all running Losi 427's I believe, but still if they can take it anyone should because they beat the hell outta them truggies lol.

Do you think I should put the new plug in and retune or leave the old in and retune? Id much rather the new plug, honestly myself. Even though I would have to buy a spare or 2 down the road.
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