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Cox Engine of The Month
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2 engine questions
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akjgardner- Diamond Member
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Re: 2 engine questions
akjgardner Tue Apr 07, 2015 7:06 pm
Is there an easy way to tell an .049 from a .051 and what is this one.thanks for the help
akjgardner- Diamond Member
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Re: 2 engine questions
stuntflyr Tue Apr 07, 2015 7:50 pm
051's have red cases, black for 049's.
Chris...
Chris...
stuntflyr- Gold Member
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Re: 2 engine questions
fit90 Tue Apr 07, 2015 7:51 pm
A Tee Dee .051 piston will have a ring around the bottom. It can be seen through the exhaust opening if you bring the piston up near top dead center.
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Re: 2 engine questions
Cribbs74 Tue Apr 07, 2015 8:06 pm
Both the above points are correct. Just keep in mind apart from the color of the carb body and the ring around the piston skirt they are identical.
I say this as it's easy to swap parts around. Look for both the ring and the carb body color. From a glance though the carb body color is a dead give away.
The one in the picture you posted appears to be an .051, to be sure though you would have to remove the muffler and look for the "ring around the skirt"
Ron
I say this as it's easy to swap parts around. Look for both the ring and the carb body color. From a glance though the carb body color is a dead give away.
The one in the picture you posted appears to be an .051, to be sure though you would have to remove the muffler and look for the "ring around the skirt"
Ron
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Re: 2 engine questions
Jason_WI Tue Apr 07, 2015 8:24 pm
Should also have a 5 stamped in the exhaust port flat.
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Re: 2 engine questions
akjgardner Tue Apr 07, 2015 8:53 pm
Thanks for the help,I picked that up at a flea market for 10 bucks, I was hoping it was a .051,that would be my first.
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Re: 2 engine questions
TDbandit Tue Apr 07, 2015 9:28 pm
Another thing, if it has the TD P/C set, I would take the muffler off anyway if it has SPI the muffler will choke it out. It will run but will have little power. (Bandit)
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Re: 2 engine questions
akjgardner Tue Apr 07, 2015 9:50 pm
It looked like it had a ring around the bottom of the piston but it had a 4 stamped on the exhaust port
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Re: 2 engine questions
Oldenginerod Tue Apr 07, 2015 10:09 pm
Check out this previous post.
https://www.coxengineforum.com/t4893-049-cylinder-and-piston-for-051
Rod.
https://www.coxengineforum.com/t4893-049-cylinder-and-piston-for-051
Rod.
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Re: 2 engine questions
TDbandit Tue Apr 07, 2015 10:13 pm
If its a 4 that's the .049 the .051 piston would not fit in a #4 the #5 is the TD cylinder set with a slightly larger bore. Here's a pic of my 051 showing the ring on the piston skirt. Hope this helps (Bandit)akjgardner wrote:It looked like it had a ring around the bottom of the piston but it had a 4 stamped on the exhaust port
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