Hello Group,
Here is what I found so far...
Green Pinto engine...
From Pintony
Yuck! What was the cause of that?
Hey, I have one of those from the 2.3T in my tan car; looks JUST like that one.
Bill
looks just like the one from the 80 I repaired in January
Quote from: dave1987 on October 02, 2007, 03:39:59 AM
Yuck! What was the cause of that?
Heyu Tigger,
I think my blown gasket was caused by overheat???
What do U guys think caused your gasket to fail???
From Pintony
I know mine was overheat caused by a bad radiator leaking all the anti-freeze out.
I think my problem was it is a 2.3.
Either that alone, or forced induction.
Bill
I don't think it being a 2.3 would cause it to blow. I have a 2.3 and the only time the head gasket has been changed on it was when I rebuilt the engine. I have a 4-speed tranny to, so over-reving happens at times which could potentially kill it to. So far so good though.
Quote from: Pintony on October 02, 2007, 09:49:28 AM
Heyu Tigger,
I think my blown gasket was caused by overheat???
What do U guys think caused your gasket to fail???
From Pintony
Pintony, it is highly possible. We overheated our 9-passenger station wagon about 18 years ago pulling a trailer (351C). It blew both headgaskets. The engine was toast after that. My neighbor's Taurus (3.8L) did the same thing. It overheated pretty good and blew a head gasket.
Have you got into the bottom end yet?
Pintony,
I had that happen to my 2.3 cruising wagon years ago. Except mine was between the 2 and 3 cylinders. I think it has to do with flame travel and the particular constant hot spots in the cylinder during cumbustion. I think that once the gasket gets a little niche and begins to eat away that it becomes perpetual. Once the breech reaches close enough to the other cylinder then the gasket temp aides in corrosponding continuation of the gasket degredation and ultimatly failure in that channel like configuration. Do I think there is a buildup of mineral deposits in that part of the water jacket that might have nurchered that failure along????....no. Do I think I know how to spell nurcher???...no. Considering the age of the car I wouldn't worry about it. How would I try to prevent it from happening again...Smear the gasket and mating surfaces down with copper anti-seize...sparingly,don't gob it on so the stuff squishes out all over. This will conduct temperatures in the head to case assembly to transfer more evenly instead of harboring hot spots. Remember that a gasket is basically an insulating material that is not used as and insulator...it is used as an isolator.
High_Horse
Quote from: Cookieboy on October 02, 2007, 10:20:10 AM
I know mine was overheat caused by a bad radiator leaking all the anti-freeze out.
Hey CookieBoy,
Yes! That gasket too is VERY ugly.
I think I remember your post about it...
Is that the silver 79-80 that had the bad gasket???
From Pintony
Quote from: Pintony on October 02, 2007, 09:19:36 PM
Is that the silver 79-80 that had the bad gasket???
Yep, changed it myself and still holds... can't really drive it, still need a drivers door.
Quote from: TIGGER on October 02, 2007, 02:03:17 PM
Pintony,
Have you got into the bottom end yet?
Yes!!! The bore is perfect and the bearings show no signs of wear...
Hopefully I can just have the block decked and the head planed true to make a perfect mating surface. I'll re-use the pistons and bearings "after Checking them"
NEW rings and a good cleaning and right back into my Green Pinto.
There is NO ridge in the bore "see photo"
I will also have all my pistons checked for piston pin wear.
From Pintony
That's good news Pintony. Hopefully everything checks out. How did the temp motor do with the automatic?
Quote from: TIGGER on October 02, 2007, 11:32:25 PM
That's good news Pintony. Hopefully everything checks out. How did the temp motor do with the automatic?
Hey Tigger,
The Green Pinto was not finished in time for the show...
So I will not be installing it.
The photo in the newspaper was from "Original 74" Dave's house taken by Cindy at the Tulsa meet...
From Pintony
Quote from: High_Horse on October 02, 2007, 05:25:14 PMI think that once the gasket gets a little niche and begins to eat away that it becomes perpetual. Once the breech reaches close enough to the other cylinder then the gasket temp aides in corrosponding continuation of the gasket degredation and ultimatly failure in that channel like configuration.
Whoa there killer! Some of us can't do those big words. ;D
Well I think it happens because of the inverse of the quadrilateral being directly disproportionate to the square of the hypotenuse. :lol:
No but seriously, Tony, I am glad the damage is not as severe as it could have been. Just think about how many of these little cars went straight to the wrecking yard because of something that is relatively easy to fix if you have the tools & know-how to do it.
--Doug
Hey Doug...
I am re-building the Factory engine
My block is at the machine shop.
The bore will be checked as will it be checked for cracks.
If all checks out it will be sunnen honed with a torqplate 1/2 thousandsor .0005
The block will be shaved .010. The block has some marks from previous head work.
looked like a rotorary file was used to clean the top of the block.
I have not yet looked into the condition of the head.
The head will also get a good cleaning as well as surfaced.
But for now I'm working on getting the block back in shape.
Hopefully the block will be finished by the W/E and I can start re-assembly...
From Pintony
How do you spell profectionist...P-I-N-T-O-N-Y.
You were looking for any good reason to redo that engine compartment And I guess that head gasket was a good one.
Her Hieness _Horse said if I touch anything in my engine compartment before the bathroom is done then I can move in there. I said....Thanks for the visual.
High_Horse
Hey H-H,
I have to get the engine done soon or I will be spending the winter living in the garage..
Funny thing is Cindy thinks that is a threat!!! ;D ;D ;D
From Pintony
They do't know us very well do day?? :lol:
High_Horse
This bump is for earthquake,
Had a feeling,The problem is caused by detonation.The 2.3 is especially prone to this problem.If the gasget doesn't blow than the piston crown usually melts down.The cause is typically bad gas IE lower than advertised octane,It usually happens with winter gas higher volatility.
Quote from: earthquake on October 15, 2007, 10:05:18 PM
Had a feeling,The problem is caused by detonation.The 2.3 is especially prone to this problem.If the gasget doesn't blow than the piston crown usually melts down.The cause is typically bad gas IE lower than advertised octane,It usually happens with winter gas higher volatility.
R U saying that winter gas has less octane??
No not as a general rule.But bad batches happen.I recently got a tank in my f250 that made the engine ping so badly we had to add octane booster just so we could get home without destroying the motor.this was my usual station and usual grade(supreme)