correct you are, thanks again.
the only confusion, my fault, is the heater type....i want an air heater
like an auxilliary car heater. I have one from a van with it's own fan.
nice for the fall....and any other time in Canada.
rick

On Tue, 30 Mar 2004 22:26:09 GMT, Marc wrote:

Original post

I have an 18HP yanmar 2cyl and would like to put in an aux heater from
the
internal cooling system (glycol). There are many plugs, thermhousing,
side
of block etc... so i am unsure where to tie in for a send return that
won't affect the cooling of the motor. any thoughts?

Taking his post at face value with the reference to the "internal
cooling system (glycol)" I understood him to mean a Yanmar 2GM20 F
and answered accordingly and specifically..




On 30 Mar 2004 19:45:43 GMT, (JAXAshby) wrote:

note that a 2GM20f is **freshwater** cooled. a raw water cooled engine
is a
different breed of cat.

I am referencing the Official Yanmar Service Manual for the 2gm20f.

One connection is a plug on the fresh water pump on the hose side that
leads from the heat exchanger. The other is a plug on the side of the
thermostat housing that leads to the heat exchanger. They are both
3/8" npt fittings.



On Mon, 29 Mar 2004 16:27:45 -0400, none
wrote:


I have an 18HP yanmar 2cyl and would like to put in an aux heater
from the
internal cooling system (glycol). There are many plugs, thermhousing,
side
of block etc... so i am unsure where to tie in for a send return that
won't affect the cooling of the motor. any thoughts?
rick












--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/