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

jim bannister jimster1 at earthlink.net
Tue Jul 24 03:44:53 EDT 2018


I have a Corsa turbo vert and in sunlight with the top down, you absolutely
cannot see one of those wimpy warning lights.  My solution was to hook up
one of those annoying piezo buzzers so that it will sound off if I toss a
belt OR loose oil pressure.  It's a belt and suspenders solution.
jim

-----Original Message-----
From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf Of
Charles Lee via VirtualVairs
Sent: Monday, July 23, 2018 11:09 PM
To: 'James Davis'; 'Jim Simpson'
Cc: virtualvairs at corvair.org
Subject: <VV> Warning buzzer or flashing light for broken Fan belts?

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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