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    I mostly agree. Unless you want to port your trx...

    I mostly agree. Unless you want to port your trx 3.3 for more power, go for a different engine.
  2. I thought $75 for my old but great condition revo...

    I thought $75 for my old but great condition revo 2.5 was good. ;)
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    Hmmmm. If I use E85 I would need to use after run...

    Hmmmm. If I use E85 I would need to use after run oil more. Second E85 would produce more power. I am worried that the extra ethanol would be harder on the carb but if I get around to it I'll try E85.
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    I've thought about E85 and ethanol free, they...

    I've thought about E85 and ethanol free, they should booth run cooler. (I don't know why 85% ethanol and 0% ethanol runs cooler than 15% but it does.) I'm also looking into different octane ratings...
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    I finally drove my revo with gasoline yesterday....

    I finally drove my revo with gasoline yesterday. I found that the engine has great low end power and top end power but lacks power in the mid range. Next if I cut throttle to quickly the engine will...
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    Working on posting pics. Yes it is a very tight...

    Working on posting pics. Yes it is a very tight fit for any diaphragm carburetor and yes the carb is about half the size of the engine. To mount it I took thick sheet metal made a tube out of it....
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    The last problem in having is that the engine...

    The last problem in having is that the engine overheats in about 2 minutes. So I have placed a mini digital thermostat on the car and I am working on wiring 2 mini drone motors to the thermostat To...
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    I shaved down around where the gasket goes to...

    I shaved down around where the gasket goes to increase compression and on the part that sticks into the cylinder sleeve so the piston doesn't hit the cylinder head at TDC.
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    I have done a lot of work in the past 3 weeks....

    I have done a lot of work in the past 3 weeks. First I got a wt688 carb for my revo and got it mounted. Sadly that carb was to big and even tuned as rich as it would go with full choke the engine...
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    I did some basic porting to a stock 3.3 engine...

    I did some basic porting to a stock 3.3 engine that anyone with a cheap dremel tool could do. The end result was a revo that will wheelie and flip over in forwards and reverse if your not careful...
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    Like I hoped caster oil has helped the engine run...

    Like I hoped caster oil has helped the engine run a little bit better than with synthetic fuel. My engine really only has 2 problems now. The first is it will overheat within minutes of starting....
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    I got the lc3 glow plug. The engine idles well...

    I got the lc3 glow plug. The engine idles well and will rev up just fine without the assistance of the glow driver(with lc4 it would idle but not rev up). There is still a noticeable difference in...
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    I lowered the glow plug by removing the plug...

    I lowered the glow plug by removing the plug gasket. I didn't notice any difference with how the engine runs so I will keep the glow plug gasket because it's easier to get a good seal.
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    if you read the actual Manuel to the ggt15 it...

    if you read the actual Manuel to the ggt15 it says to run a 25:1. I don't know why most places say 50:1... But they do.

    I don't want to run the oil lower than a 20:1. All of the small sub 15cc...
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    I want a glow ignition gasoline engine for my rc...

    I want a glow ignition gasoline engine for my rc car. The only glow ignition gasoline engines on the market are the OS ggt15 and the NV gx-40 rc bb revlite. Booth are for rc planes and would be more...
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    I have been trying things one at a time. I just...

    I have been trying things one at a time. I just update a bunch of new info all at once. I do prefer the lc4 over the stock plug even if it is cooler because it is less sensitive to the tune. I...
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    I recently modified the compression, swapped from...

    I recently modified the compression, swapped from the stock glow plug to an lc4, and now I am running straight gasoline and 2-stroke oil. All the changes made a big difference.

    I first switched...
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    Sort of... I have only run it on my revo. It will...

    Sort of... I have only run it on my revo. It will run up to about 30 seconds before it dies and until it dies I can putt around a bit. It will die pretty quick if I don't give it throttle

    I have a...
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    I just finished porting my engine to help make up...

    I just finished porting my engine to help make up the power loss of gasoline. after running my engine on nitro to test the porting it seems to me that it has about the same power in the low rpms but...
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    I'm currently getting the best results with the...

    I'm currently getting the best results with the high speed needle 1 3/4 turns out. Stock settings for 20% nitro is 4 turns out. I also turn the low speed needle about 1/4 turn in. So it is running...
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    One I get this running well I intend to replace...

    One I get this running well I intend to replace the original carb with a diaphragm carb so I can run straight gasoline with a 5% oil mix. The methanol additive just let's me use the original carb...
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    Thanks for the advice... But I believe I actually...

    Thanks for the advice... But I believe I actually need to increase the compression. I'm running mostly gasoline(75%+) gasoline won't detonate until it reaches a compression ratio of about 14:1 and...
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    It's been a little while since I worked on the...

    It's been a little while since I worked on the gasoline conversion so here is a quick update. I replaced the 13+ year old trx 2.5 on my revo with a brand new trx 3.3. I recently finished breaking the...
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    Trx 3.3 idle rpm

    Does anyone know what rpms your trx 2.5 and 3.3 engines idle at? I m trying to calculate the mass flow rate at an idle and this info would help a lot.
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    Does anyone know when Traxxas quit producing the...

    Does anyone know when Traxxas quit producing the original revo 2.5? I would guess 07 or 08 but I can't find any real info on this.
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