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  #1  
Old 03-20-2020, 04:24 PM
Shade Tree Welder's Avatar
Shade Tree Welder Shade Tree Welder is offline
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Default 2003 Pontiac Grand Am

Well some of you might remember that we were pushing the Dodgy truck
engine rebuild as Matthew aka the Spawn of Shade. Blew a second engine
in his Pontiac. Well, last weekend he started the removal process and we
now have a stripped block. The problem was readily identified as the intake
rocker bolt on #1 cylinder pulled out of the casting stripping all the threads.

It is clear we are not the first people in this engine and they did not own
a torque wrench.
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  #2  
Old 03-20-2020, 04:28 PM
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So as a result the intake valve on #1 was closed and was not opening at all.
The plan is to buy rebuilt heads as there are 5 known stripped hole and I
suspect more damaged ones due to the morons working on this prior.
Aluminum heads cast block.

The good news is the bearings on the crank and camshaft are in tolerance.
So new bearing shells and we are good there. The engine had heavy sludge
in it, so the block will get a boil out and honed well.
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  #3  
Old 03-20-2020, 04:44 PM
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Whitetrash Whitetrash is offline
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So, I assume this is an educational project which is very cool. Cause I have to think a pick and pull engine would be way cheaper than cooking the block and a new top end.
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Old 03-20-2020, 05:10 PM
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I can see it had not had the best of care by prior owner . In response to the question of a learning experience ,I have bought junkyard engines and had to rebuild them within 10,000 miles . My action is either a Jasper rebuild or a Harold rebuild or time to Junk the vehicle .
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Old 03-20-2020, 06:00 PM
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That sludge reminds of of the old days when my job was to clean out the sludge when my dad tore down a engine in the days before detergent oil showed up.
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Old 03-20-2020, 07:13 PM
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Quote:
Originally Posted by Whitetrash View Post
So, I assume this is an educational project which is very cool.
Yes... and to get across the lesson if your going
to beat an engine this is what happens.
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  #7  
Old 03-20-2020, 07:22 PM
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Quote:
Originally Posted by midmosandblasting View Post
My action is either a Jasper rebuild or a Harold rebuild or time to Junk the vehicle .
A long block is about $2000, I will be in way under that price.
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  #8  
Old 03-20-2020, 07:30 PM
4x4ford 4x4ford is offline
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Common failure on 3.1 and 3.3 motors rebuild shop is used to work in had a jig built to drill and helicoil them while still in the car


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  #9  
Old 03-20-2020, 07:44 PM
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Shade Tree Welder Shade Tree Welder is offline
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Quote:
Originally Posted by 4x4ford View Post
Common failure on 3.1 and 3.3 motors rebuild shop is used to work in had a jig built to drill and helicoil them while still in the car


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Are you talking about the rocker bolts?


There are several other tapped holes including 2 spark plug holes.
Rebuilt heads are about $170 each. Since the crank and cam shafts
are good, this wont hurt the bank to hard.
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  #10  
Old 03-20-2020, 08:24 PM
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When I saw the first picture, my first thought was that puppy is going to need a long hot bath.

Do they make a bucket of carb cleaner big enough to fit the heads in?
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