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Post  mitchg95 Tue Jun 26, 2012 6:09 pm

i have a cox .020 with a high comp teedee cyl head and the crankcase seems to have a burr where the crankcase meets the back plate. How do i fix this?
thanks
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Post  Cribbs74 Tue Jun 26, 2012 6:49 pm

mitchg95 wrote:i have a cox .020 with a high comp teedee cyl head and the crankcase seems to have a burr where the crankcase meets the back plate. How do i fix this?
thanks

I don't think the knurled TD glowhead is any different than the regular one.

As to the crankcase...... Just lap (sand) the case on on a flat surface preferably a piece of sheet glass and the burr should all but dissapear. Use very fine grit wet dry paper.
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Post  mitchg95 Tue Jun 26, 2012 6:51 pm

thanks Ron, it has the ring around the top of the head like the larger teedee .049 has
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Post  RknRusty Tue Jun 26, 2012 7:09 pm

I use 800 or 1000 grit for that operation.

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Post  mitchg95 Tue Jun 26, 2012 7:10 pm

will 500 grit work?
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Post  Cribbs74 Tue Jun 26, 2012 8:22 pm

mitchg95 wrote:will 500 grit work?

I would go 800 or more like Rusty suggested.

Take a look at the combustion chamber and compare it with a regular head. You'll see what I mean.
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Post  microflitedude Tue Jun 26, 2012 8:42 pm

This is what your head looks like, right? The knurling only indicates early production.


help with peewee crankcase Hpim8825


More info here -

https://www.coxengineforum.com/t1430-sold-peewee-020-red-tank-engine-3000?highlight=peewee+++020

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Post  mitchg95 Tue Jun 26, 2012 8:57 pm

microflitedude wrote:This is what your head looks like, right? The knurling only indicates early production.


help with peewee crankcase Hpim8825


More info here -

https://www.coxengineforum.com/t1430-sold-peewee-020-red-tank-engine-3000?highlight=peewee+++020


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