cox tee dee .049

jsesere Tue Sep 11, 2012 2:05 am

Does anyone know when Cox stopped useing the # 4 cylinder and when they start using the screened intake?

**RknRusty** Tue Sep 11, 2012 4:23 am

According to mh-aerotools.de, circa 1973 is when the screen came out. I don't know about the cylinder.

jsesere Tue Sep 11, 2012 4:26 am

I read the same thing. I'm just trying to verify.

John Goddard Tue Sep 11, 2012 4:44 am

My 2 boxed 051's are '74 vintage they both have screens
Very Happy

**Cribbs74** Tue Sep 11, 2012 9:12 am

As far as I know they never stopped using the #4. Unless it was an Estes thing. They did go from 4 booster flutes to 2. I have no idea when, but it was after 1992.

jsesere Tue Sep 11, 2012 9:14 am

I've noticed the #4 stamp is missing on some of the cylinders.

**Cribbs74** Tue Sep 11, 2012 9:19 am

jsesere wrote:I've noticed the #4 stamp is missing on some of the cylinders.

On the ones I sent? The stamp on those were on the flat on the exhaust port. Very small grab a magnifying glass.

jsesere Tue Sep 11, 2012 10:06 am

Ron. I was just speaking in general. The stamped #4 cylinders look different than the un stamped from the outside.

**Cribbs74** Tue Sep 11, 2012 11:02 am

jsesere wrote:Ron. I was just speaking in general. The stamped #4 cylinders look different than the un stamped from the outside.

Weird, the cylinders were difderent throught the production years. Is that what you are refering to?

Thin walled, stepped, thick walled etc. The porting should be the same inside though. With the exception of the later years with only 2 boost ports

Cox International Tue Sep 11, 2012 11:14 am

In 2008 we bought the last 400 or so cylinders stamped #4. They were the remaining ones Estes had left when they discontinued manufacturing the Tee Dee .049.