[DeTomaso] Overheating Issue

[Sean Korb]

I think the proper way is to remove the head and use a magnaflux
method.  Look for cracks around the valve seats, but there may be
others.  If it's internal to a passage, it's hard to see, but they are
usually in visible places.

I check for head gaskets using the old condom method (with a new
condom, of course).  Pinch off the overflow tube and put a condom
around where the radiator cap was.  Start the car; if the condom
inflates, you have a bad gasket or cracked head.  It's better to use a
radiator pressure test and leakdown check, but condoms are cheaper and
have that extra "ewwww!) factor.

sean

On Tue, Jul 20, 2010 at 9:35 AM,  <wdemelo at cogeco.ca> wrote:
>> I just found out he replaced a head gasket some time ago because it was leaking coolant.
> What is the proper way to test for a cracked head?
> Will
>>
>>
>> Did you by chance also check the timing marks i.e. that the TDC mark is actually still TDC on cylinder #1 to verify
>> the harmonic balancer bonding ring had not slipped.
>>
>>
>>
>> How about any loss of coolant or 'gassing' in coolant that would be indicative of a blown head gasket?
>>
>>
>>
>> Julian
>>
>> > From: wdemelo at cogeco.ca
>> > To: kenn_green at yahoo.com; detomaso at realbig.com; wdemelo at cogeco.ca
>> > Date: Sun, 18 Jul 2010 21:03:13 -0400
>> > Subject: Re: [DeTomaso] Overheating Issue
>> >
>> > > Yeah, we looked at that. He keeps a good eye on timing as it is an early car with high compression.
>> > Will
>> > >
>> > > Could the timing have slipped to retard the timing?  That can make an engine run hotter.
>> > >
>> > > Ken
>> > >
>> > > --- On Sun, 7/18/10, wdemelo at cogeco.ca <wdemelo at cogeco.ca> wrote:
>> > >
>> > >
>> > > From: wdemelo at cogeco.ca <wdemelo at cogeco.ca>
>> > > Subject: [DeTomaso] Overheating Issue
>> > > To: detomaso at realbig.com
>> > > Date: Sunday, July 18, 2010, 4:43 PM
>> > >
>> > >
>> > > Hey Guys.
>> > > A friend is at his wits end with the cooling system on his  Pantera.
>> > > Up until a year ago, his car ran cool (160 hwy and 180 city). It then slowly started to run hotter and hotter (
>> > > 230 city).
>> > > So he replaced the rad (fluidyne), pump(elelbrock, dual suckers and new tubes. Things didn"t change. 160 on the
>> > > hiwaya nd 230 in the city. He then installed a HD Robershaw 180. Same thing except it ran 180 hwy and 230 in the
>> > > city. He has jacked the back and front up numerous times trying to get any air out. He's about to pull an "Elvis"
>> > > and shoot the thing.
>> > > Any suggestions? Asajay, didn't you go through this a while ago?
>> > > Will
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-- 
Sean Korb spkorb at spkorb.org http://www.spkorb.org
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless.  They can only give you answers." -P. Picasso