Oil from DDM pipe???

[nightmare702]

Fellas im new to the larger scale petrol vehicles, I recently purchased a almost new...used Firehammer MT and also picked up a DDM Dominator pipe, I installed the DDM without ever trying the stock pipe and this thing runs great Im very satisfied with it but I noticed that there is a small amount of black oil coming from the pipe tip almost like a nitro engine. Is this normal or am I too rich? keep in mind it's running great, low end and high end. I am using hpi 2-cycle oil 25 to 1 and 91 octane fuel. .

 

[Timmahh]

most the exhaust flanges on all pipe. my not be totally flat. if its not, you may have a bit of oil seep thru the thin openings. basically its fairly normal to have a smidge of an oil mess. you can try to take a file and put a FLAT face on the mating surface and it should help seal up. also check your exhausts bolts as they may be getting a tad loose and need to be retightened.

 

[nightmare702]

It's actually coming from the exhaust tip and kinda spitting out a little like nitro engines do when you run them rich, no leaks where the exhaust bolts up to the engine.

 

[Timmahh]

ok thats fairly normal, it does mean you have enough oil in the mix ratio, and you SHOULD be able to go to a slightly leaner ratio. i was running 25:1 and also had some drip from the end of the pipe, now im running 32:1 (same oil) and its not as bad.

 

[nightmare702]

Oil from DDM pipe

Big thanks Timmahh, there are some great guys on this forum that make this hobby such a blast.

 

[Bigger the Better]

Oil from the MT pipe is normal and can be controlled by making a plug.
Take a 5/8" auto tube and cut it to a size that will securely push onto the end of the pipe. Shove a 1/2" copper cap for plumbing in one end. This will help control the oil mess when storing it.

 

[csp1971]

Oil from the MT pipe is normal and can be controlled by making a plug.
Take a 5/8" auto tube and cut it to a size that will securely push onto the end of the pipe. Shove a 1/2" copper cap for plumbing in one end. This will help control the oil mess when storing it.

That's awesome!