I think you are right Ed. My pump is the cut down version and has no thermostat.
Buly
>
> From: "Ed Anderson" <eanderson@carolina.rr.com>
> Date: 2005/03/15 Tue PM 09:32:29 EST
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Water pump
>
> Don't know for certain, Buly.  But I would say the thermostat housing.  Some
> models used an "O" ring for sealing.
>
> Ed A
>
> ----- Original Message -----
> From: <atlasyts@bellsouth.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Tuesday, March 15, 2005 8:44 PM
> Subject: [FlyRotary] Re: Water pump
>
>
> > Mine just arrived. It is new in a box. Made by NISSAN PUMP CO in Japan?
> Include two gaskets, four studs and one O-ring about 1.5" diameter? Does
> anybody know what is the rubber o-ring for?
> > Buly
>