<VV> Overheating - Deflashing Heads

Bill H. gojoe283 at yahoo.com
Mon Jul 26 16:18:11 EDT 2010


Hi all...since I installed A/C in my Corvair it's been nothing but trials and 
tribulations!  Last week, maiden voyage past my 4 mile commute to/from work, 
temp outside was around 95 degrees and we got stuck on the FDR Drive in NYC, 
bumper to bumper for over an hour in the hot sun.  I had to go upstate to answer 
a traffic ticket.

The oil temp gauge kept getting hotter and hotter, got past 260 degrees and onto 
340, no place to pull over.

I shut the A/C off before that point.  However, as we idled our way up the east 
side of Manhattan, the TEMP/PRESS light came on, and I gingered the car as best 
I could till we could pull over (there's no place to pull over until you cross 
the George Washington bridge and get onto the New Jersey side of the border).  
She was pinging loudly too, but as soon as we crossed the state line we stopped 
at a rest area and I let her cool off for a few minutes, and the sun went behind 
the clouds.

The temp went down to around 260, we got back on the highway but now there was 
no traffic, so she stayed just under 260, I turned the A/C back on and there was 
no pinging, nor did the TEMP/PRESS light come back on either.

Coming back, it was raining, hail, thunder/lightening, etc. but she ran ok.  In 
fact, the A/C was a godsend because at least the interior was cool and 

As soon as we got back into Brooklyn, hot weather and idle, idle, and idled our 
way home.  Temp went back up, TEMP/PRESS light back on, pinging, etc. even 
though the gauge indicated 250 degrees for the oil.

It hit me that not de-flashing my cylinder heads was a B-I-G mistake, and I 
better do this before I take the car out again on a trip.  She still runs and I 
pray to the Al-mighty that I didn't damage her engine permanently.
So, does anyone have suggestions for the best (and least intrusive) way to 
deflash the heads?  I don't mind removing the top shrouds if it doesn't take all 
day to do, and if it makes de-flashing easier.  Can de-flashing be done from the 
top of the engine instead of getting under the car.

I've heard that a long 1/8" drill bit is the best way to go.  If that's so, then 
I assume that this size bit will fit in between the fins?

I'd appreciate any and all suggestions and thanks...Bill Hershkowitz 69 Monza 
110 PG


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