1966 m20c question

[Taracka]

Wondering if this hose routing is correct. On this 1966 m20 c If you look at the photo you'll notice the scat hose coming out of the top of the cabin heat box and exhausting below the number 3 cylinder.

Thanks for any help.

Rich

[duke]

that is correct. when cabin heat is off , hot air is dumped out that hose. It keeps cooling air flowing around muffler.

[Andy95W]

that is correct. when cabin heat is off , hot air is dumped out that hose. It keeps cooling air flowing around muffler.

Muffler anti-icing device for Saskatchewan M20C owners.

[tsuttles]

Looks right to me but you may want to take a look at your EGT and CHT on C 3 when you are doing your run-up as the spark plug is disconnected I know you know that I was just making a joke.....

[Sabremech]

Looks completely different than my 66 C. I'm now curious as to what S/N yours is as I don't have that style of cabin heat box or scat hose routing. Mine is S/N 3308.

Interesting.

David

[flyingvee201]

I have the exact same setup, but mine is a 1967 F model. My hose goes almost all the way down to the bottom of the cowling exiting out to the slip stream along with all the other engine heated air.

[drbob]

Rich:

       Did this AC have S.B.M20-152A complied with?

Cabin heat valve appears to be much newer,  M20 parts manual pg.162 fig 64, item #22.

 

This might explain the newer style heat control valve, fuctions the same just bigger heat dump hose to the lower RH cowl

area.

                                                                            just some thoughts drbob

[mike28w]

I have the exact same setup, but mine is a 1967 F model. My hose goes almost all the way down to the bottom of the cowling exiting out to the slip stream along with all the other engine heated air.

  Me too....."63 M20C.   This makes more sense to me, but I'm not a mechanic....mike

[Guest]

Looks right to me but you may want to take a look at your EGT and CHT on C 3 when you are doing your run-up as the spark plug is disconnected I know you know that I was just making a joke.....

May also want to install the missing 1/4-20 baffle mounting bolt below the manifold pressure line union.

Clarence

[Mooneymite]

May also want to install the missing 1/4-20 baffle mounting bolt below the manifold pressure line union.

Clarence

 

Wow!  Sharp eyes.....

 

Good for you.  

[carusoam]

You guys are good!

Best regards,

-a-

[Sabremech]

Here's the scat hose configuration on my 66C. Looks like the only difference is the cabin heat box. Is there an S/B for this difference?

[Andy95W]

Here's the scat hose configuration on my 66C. Looks like the only difference is the cabin heat box. Is there an S/B for this difference?

David-

My 64 is like yours; my former 67 was different and had the 'overflow' hose to duct unused hot air overboard. I have no doubt that one of the salvage yards could sell you the new style, which would be no problem to install if you wanted it.