<VV> Warning buzzer or flashing light for broken Fan belts?

[Charles Lee]

Hi guys ~

My first fan belt issue in quite a while ...

I have a Corsa dash ion a Monza and no ID10T light, so I ran an LED off the
alternator output, which would (and did) go out if the she tosses a belt.

I had driven her about 240 miles yesterday at freeway speeds and she was
doing fine.

Last night, I thought the engine was running even smoother than normal, and
before I noticed the light was off, I thought maybe it was because the fan
belt broke so, looking at the light, it was off, and I pulled over to check
it.

Sure enough - the belt was torn up. 

The engine knocked for about 5 -10 seconds (which it never does otherwise)
and I changed it in the dark.

I don't know how hot she got, but is there a correlation between the time it
knocks and damage done?

I was about 100 miles from home at night, and she started fine and behaved
OK at 70 MPH for the trip home.

I want to get a warning buzzer or flashing light so I notice sooner next
time, any suggestions?

Charles Lee


-----Original Message-----
From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf Of
James Davis via VirtualVairs
Sent: Tuesday, July 17, 2018 3:24 PM
To: Jim Simpson
Cc: Virtual Vairs
Subject: Re: <VV> Hot

There is no record of Chevy testing the 140 engine for temperature.  The
140 heads have 27% less fin area then the other heads due to the larger
intake and exhaust ports.  It stands to reason than they would run
hotter.then the average engine but I suppect they would not overheat in
normal operation.
Jim Davis

On Tue, Jul 17, 2018 at 3:25 PM, Jim Simpson via VirtualVairs <
virtualvairs at corvair.org> wrote:

> I don't see any particular reason to change the oil.  Synthetics like
Mobil
> 1 are good to pretty high temps --  according to their web site, the Mobil
> 1 oils can go to 500 F!  I suspect that's a "flash temp", not sustained
> driving, but unless you melted a bearing or something, I doubt you've hurt
> the oil.
>
> The bigger issue is why did you get a overtemp warning light?  Even at 108
> outside temp, the engine shouldn't overheat at any reasonable highway
> speed.  Chevrolet tested the engines during development at higher temps
and
> speeds than that.
>
> So check the cylinder head flashing, the fan belt, oil cooler to be sure
> there's nothing blocking air flow.  And don't overlook the cylinder head
> temp switch.  They've been known to go bad and trigger at lower than
> specified temperatures.  (Do you have a cylinder head and/or oil temp
> gauge?)
>
> Jim Simpson
> Group Corvair
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