Fred,
With the +4 laid up and with the ambient temperatures "north of the 49th", I
don't have any immediate need for anything that boils at more than 100 C
(212 F), but the Evans coolant sounds interesting.
I would urge a word of caution, though. Evans coolant may be OK for NASCAR
types but compatibility with the innards of a Morgan engine and radiator
needs to be confirmed. Also, what would running an engine hotter than it
was designed for do to the oil, the gaskets, etc.? NASCAR types can (need
to) tear their engines apart "occasionally" but that's not the sort of thing
I would want to do on a regular basis (mind you, I would get pretty good at
after a while).
Anyway, any thoughts on this or am I being too cautious?
Chuck Vandergraaf
'52 +4
Pinawa, MB (where it got up to +2 C the other day!)
> ----------
> From: FPS3@aol.com[SMTP:FPS3@aol.com]
> Reply To: FPS3@aol.com
> Sent: February 3, 1999 9:14 AM
> To: FPS3@aol.com; ggerth@west.net; nogera@prodigy.net;
> Morgans@autox.team.net
> Subject: Re: NASCAR Technology
>
> Has anyone tried the Evans coolant? As I understand it, it boils at 369
> degrees. It may be straight propolyene glycol as I remember reading a few
> years ago.
> Seems that it would be the ticket for a car that ran "hot". Hot is
> relative-
> we think of 212 as "hot" 'cuz the water boils & if it goes away there is
> nothing to transfer the heat away from the engine. According to what I
> have
> read (not tried...) the Evens coolant has another benifit as it is less
> prone
> to form the steam pockets in the head- usualy around the exhaust valves-
> thus
> reducing detonation tendencies.
>
> I have read of the Evans SYSTEM being used in NASCAR types and they were
> running over 320 degrees in unpressurized systems. However I just read an
> article in HOT ROD magazine where they were using the Evans coolant only-
> with
> a 7lb pressure cap to reduce detonation in a test engine.
>
> 300 degrees is not necessaraly "hot" for an engine- but it is with
> standard
> coolant.
> In fact, Evans says that the engine would like to run hotter and that
> there
> are many benifits in running higher temperature and reducing the temp
> differential amoung the various engine components.
> A side benifit is that running higher temps also means that a smaller
> radiator
> will suffice as the temp differential between the radiator and ambiant is
> greater (more efficient) and they are not trying to lower the temp that
> far
> either.
>
>
> Sounds like a "natural" for a Morgan!
> I need to learn more about this stuff- Evans NPG Coolant. Has anyone
> played
> with it?
>
> Fred Sisson
>
|