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Cox Engine of The Month
January-2022
Mark Boesen's

Twin Needle Thermal Hopper with a Cage Mount.



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Knob Style Sandblaster Engine disassembly Empty

Knob Style Sandblaster Engine disassembly

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Knob Style Sandblaster Engine disassembly Empty Knob Style Sandblaster Engine disassembly

Post  RNajarian Tue Jul 28, 2020 6:21 pm

I was unable to find the answer via the search function.

I need to replace the engine black plate with the postage stamp style backplate as seen in the photos.

Before I gorilla a clean engine, any suggestions how to do this properly? Unfortunately the pull style engine rebuild instructions do not address this style of engine.

Thanks


Last edited by RNajarian on Tue Jul 28, 2020 6:32 pm; edited 1 time in total (Reason for editing : Punctuation correction)
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Knob Style Sandblaster Engine disassembly Empty Whoops forgot photos ...

Post  RNajarian Tue Jul 28, 2020 6:23 pm

Sorry, forgot photos.

Knob Style Sandblaster Engine disassembly B3497210
Knob Style Sandblaster Engine disassembly A96ae810
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Knob Style Sandblaster Engine disassembly Empty i get the old muffler

Post  happydad Tue Jul 28, 2020 7:16 pm

@RNajarian wrote:Sorry, forgot photos.

Knob Style Sandblaster Engine disassembly B3497210
Knob Style Sandblaster Engine disassembly A96ae810

RNajarian: If you don't need the old muffler i need one. LOL.

p.s. the postage stamp backplate looks like a 128tpi needle assy. be sure to NOT try a 78tpi needle as it will cross thread and ruin both.

And slowly is the answer to proceeding on cleaning the engine and use at least 1 glove as the fuel does a job on skin, drying it out. i use rubber glove $5.00 for 250.

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Knob Style Sandblaster Engine disassembly Empty Re: Knob Style Sandblaster Engine disassembly

Post  RNajarian Tue Jul 28, 2020 9:18 pm

Good thing I posted here because I never even considered the issue of different thread needle valves.

I need to pick up a 128 tpi needle valve.
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Knob Style Sandblaster Engine disassembly Empty you know who to call.

Post  happydad Tue Jul 28, 2020 9:33 pm

@RNajarian wrote:Good thing I posted here because I never even considered the issue of different thread needle valves.

I need to pick up a 128 tpi needle valve.

you have the valve, i have the needle.  if it is a 128tpi. I have a picture of a fuel tank also. might as well show it here. was looking for something else, but found this.


Knob Style Sandblaster Engine disassembly Img_1416
looks like an ounce or more. I need to clean it has a noise, tink, tink, could be loose gunk, or ??

If you need it, I most likely have it if is .049 Cox related.

hang on iceman, I'm coming.

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