[DeTomaso] Misdiagnosing an oil pressure issue

Sun Mar 18 19:26:43 EDT 2018

Mike, I had the same problem a few years ago (not the dumbassery part) and
wanted to flush the heater lines with the motor in the car.  I disconnected
the heater hoses from the block and water pump (have blue silicone so
they're easy to bend, threaded them down so they ran under the car, jury
rigged a garden hose connection to one (the end that would normally send
water to the heater core) and ran the other heater hose into a bucket and
holy crap!, er, rusty crap!  That did the trick.  If you have a
male-threaded hose end on your utility sink faucet, you could run hot water
through and may get more out than with cold.  Just a thought.  Also, don't
turn the water on full, that could be entertaining.

Haven't had an issue with the heating system in the 8 years since.

Mike Thomas
Pres., Panteras Northwest
206-795-3302
Yellow '74 #6328
www.panterasnorthwest.com

-----Original Message-----
From: DeTomaso <detomaso-bounces at server.detomasolist.com> On Behalf Of Mike
Drew via DeTomaso
Sent: Saturday, March 17, 2018 7:49 PM
To: spkorb at gmail.com
Cc: DeTomaso Mail List <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Misdiagnosing an oil pressure issue

Sean,

Good story! But if you went through all the work to remove the stock oil
pan, and then just put it back instead of installing a quality pan like and
Aviaid or Armando pan, well....

Then I think your self-assessment is correct. :) :) :)

Speaking of dumbassery, yesterday after rebuilding my frozen heater valve, I
installed it and hooked up new heater hoses and prepared to have a
functioning heater for the first time in 29 years. 

I had thought long and hard about all the things I was going to do to make
sure the pipes and heater core were free of debris. I thought SO long and
hard about it that I became convinced that I had actually done it!

So in my excitement I hooked everything up, filled the cooling system and
tested it. It blew lukewarm for a minute and then blew cold. Feeling the
heater hoses, they were room temperature too. 

Zero water flow. Then I realized I never cleaned out the 30 years of gick
that are probably in there. So now I have to tear the system down and try to
clean it all out and get it to work properly. It would have been so easy
when the engine was out just a few weeks ago. 

Yes, I am a dumbass!!!!!

Mike

Sent from my iPhone

> On Mar 17, 2018, at 19:07, Sean Korb <spkorb at gmail.com> wrote:
> 
>   Years ago, I noticed in right hand turns my oil pressure would suddenly
>   drop.A  It was alarming so I took right hand turns very slowly.A
>   Sometimes it would drop in left hand turns too.
>   I didn't know if I had safety wires for my -1 ZF ring gear and I had
>   stock 2 piece valves so I thought it was a good time to do some
>   familiar maintenance.A  I thought extreme measures were called for so I
>   even got a deep pan to install.
>   ZF turned out to already be safety wired.A  Yay.A  The old pan came off
>   and wow!A  All the valve seals had disintegrated and settled in the
>   pan!A  Problem solved!A  I cleaned it out and ran solvent through all
>   the galleys and block, installed the pan and put rebuilt heads on and
>   painted the block.
>   I had the same problem in left and right hand turns.A  And it was
>   getting worse!A  I assumed I had missed a few flakes of valve seal and
>   I was going to have to take the motor out again.
>   One day I started it up and had no oil pressure at all!A  It did
>   eventually come back but I did discover some other odd problems had
>   been mounting and wiggling the fuses helped.A  I wire brushed them (a
>   little copper wire brush) and it helped but I still had some trouble.A
>   I noticed some of the rivets were loose so I set them with a wide awl
>   struck with a hammer.A  That tightened them up, my lights and
>   instruments seemed more reliable and I went about my business.
>   I had some long left and right hand sweepers today on the way to a car
>   show and I noticed the pressure did not drop the entire drive.A  It's
>   been years since I put the motor back in and a year since I set all the
>   fuses and I just... never noticed.A  It just works.A  Everything works.
>   So anyway, I'm kind of a dumbass but at least the issue is resolved and
>   I can take some curves in the Pantera like I always imagined doing :)
>   sean
>   --
>   Sean Korb [1]spkorb at spkorb.org [2]http://www.spkorb.org
>   '65 Suprang,'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.A  They can only give you answers." -P. 
> Picasso
> 
> References
> 
>   1. mailto:spkorb at spkorb.org
>   2. http://www.spkorb.org/
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