Operating temps

[Daniel Ciobota]

Well, since this is a gm ecm list, and we're talking gm operating temps, the
stock L98 corvettes (84-91 models) had fans that kick in at 230deg... on hot
summer days with ac on, it's not uncommon to see operating temps on those cars
climb up to 240 before coming back down.  This happens regularly on those
motors, with no damage to them.  Btw, the boiling point of 50/50 antifreeze is
somewhere around 265deg... synthetic oil starts to turn to tar at 470deg I
believe.  Oil temps run regularly to 260deg on those cars as well.

 Just another (gm) datapoint.

Daniel


Mike Rolica wrote:

> DRUGS!! LOOK WHAT THEY DO!!  The highest thermostat I've ever seen is 195
> deg at 280, serious engine damage occurs!  Mine runs at 212 max! oh by the
> way  my 1999 vw golf vr6, the first fan kicks on at 203 off at 195  second
> kicks on at 212 off at 200.  At 220, the ecm kills the motor!  Been there
> too.
> Mike Rolica
> EXT. 260
>  :-)
>
> -----Original Message-----
> From:   David Cooley [SMTP:n5xmt at bellsouth.net]
> Sent:   Friday, September 24, 1999 3:15 PM
> To:     gmecm at efi332.eng.ohio-state.edu
> Subject:        RE: Operating temps
>
> At 02:52 PM 9/24/1999 -0400, you wrote:
> >DO THE PISTONS EVEN SLIDE IN THE BORES AT THAT TEMP? MIGHT BE KINDA HARD ON
> >RINGS AND STUFF, BE PRETTY TIGHT!  DE HEADS (ESP. ALUM.) MIGHT LOOK LIKE
> >BANANAS :-)
>
> Ya Know,
> Any new vehicle you buy with an electric fan runs at 220 to 225 before the
> fan kicks on. 240 isn't that hot compared to 220-225...  Oil temp (without
> a blocked cooling jacket for the water...) will probably be within 10
> degrees or so of the water temp.  This has been the case since the
> early-mid 80's.
>
> ===========================================================
> David Cooley N5XMT Internet: N5XMT at bellsouth.net
> Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
> We are Borg... Prepare to be assimilated!
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