----- Original Message -----

From: Perry Mick

To: Rotary motors in aircraft

Sent: Friday, April 23, 2004 12:16 AM

Subject: [FlyRotary] Re: stock manifold

Michael D. Callahan wrote:

Never weighed the NA exhaust manifold, but the turbo manifold weighs 10
    

lbs.

    Stock NA manifold is HEAVY! Probably over 50lbs. I will try to weigh one
tomorrow and report back..... if I still have it in the shop. Should not
even be considered for an aviation conversion.
    It's built to withstand the heat of the air injection reactor system.
Basically, they inject air into the manifold via the vane-type air pump. It
afterburns the exhaust gasses in the exhaust manifold to clean up emissions.
Mike C.

  

You are wrong on that one Mike C.

I've flown the stock exhaust manifold for 5 years now. It does "feel" heavy, but 50 lbs. it is not!
As Paul Conner just wrote, it weighs 12 lbs. I never bothered to weigh it so I did not have a number to share.

It's bulletproof and not bound to break apart and go through my prop, that's why I like it.

Perry

Hi, Perry....I have tried two other "stock manifolds", and the other two were a little larger than this one, and thereby a little heavier, but I doubt that even the larger one would be over 15 pounds.   I'm happy to hear that my choice of exhaust manifolds should stand the test of time.  Thanks for your valued input.  Paul Conner