Project Rebuild unCIVILized

tweiss3

Member
:
91 FC Base, 2004 Mazda6s
So, my 6 has been sitting for 2 years with a blown motor. Without getting into it, over OCI, cold winter (-10 when I started it), and I probably got throttle happy too early. Ended up with a spun bottom end.

So here is the rebuild thread of my 2004 V6 Mazda6 MTX from teardown and be

4-24-2012:
Pick up the car and find this s*** under the hood:
IMAG0111.jpg


s*** s*** s*** s*** s***. Wires chewed through, etc. Will deal with that later. Next, on the trailer to move it to my house:

IMAG0113.jpg

IMAG0112.jpg


4-25-2012 after some teardown:
IMAG0120-1.jpg


4-26-12:
Very close to fully torn down
IMAG0122.jpg


4-27-12:
Headers disconnected
begin fight with axle nuts

5-1-12:
after use of air impact gun, forget fight with axle nuts.

5-2-12:
Remove nuts from ball joints, but have troubles removing them from the knuckle.


SUCCESS!!!!!!!!!!!!!!!!!!!!

IMAG0126.jpg

IMAG0124.jpg


I am so happy right now, cause this sucker was a pain in the butt.

Now its a waiting game for when my parts can get to me.

PHASE 1 COMPLETE!!!!!!!!!!!!!!

May 7
Saturday, got the trans separated from the motor. Decided to lift and move the trans to the other side of the garage myself, bad idea. Im still paying for it in my back.

IMAG0130.jpg

IMAG0128.jpg

IMAG0127.jpg


Today, got the old motor on the engine stand so I can finish removing accessories, etc.......
IMAG0136.jpg

Drained the oil, came out as black as if it were conventional in there for 15k miles, and it really has only had maybe 3 hours running time on fresh schaeffers.
IMAG0137.jpg


I also pulled the oil pan, pickup and baffle to see if i could see any carnage. It's not as bad as Gregg's was, but there definately was cylinder vs head. Also, the rear three cylinders are fried. I was turning the motor with a breaker bar, and the front three had compression while the rear three had absolutely none. This motor is toast.

Not much for me to do for a while other than some cleanup.

Ran down to Topeka, KS to pick up my motor core and internal parts from a friend's house. Got back July 18th:
The motor is sitting in my driveway (now under a tarp) because I am too tired and it is too hot outside (and about to pour down rain)

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr


And I have a large box of parts, some of them are pictured below:

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

And the part I hope lasts a heck of a lot longer than OEM.

Untitled by tweiss3, on Flickr

And now, I will be monitoring everything, replacing the spot holders (glow shift) with prosport units.

Untitled by tweiss3, on Flickr

June 21st:
Most of my time in the garage was spent moving the palate from the trailer to the garage, then the engine from the palate to the engine stand. Anyways, here it is when I left it last night:


Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Untitled by tweiss3, on Flickr

Stacking parts neatly so I can remember where they go:

Untitled by tweiss3, on Flickr

This engine had great compression, turned easily, and is very very clean. The oil pickup is spotless (thats great) and it looks like some of the only problems it had were oil pan gasket and broken valve cover. I was told this engine was pulled cause it needed rings and was consuming oil, and I have to wonder if that was wrong, it may have been a faulty PCV valve. Either way, this should be a great rebuildable core.

June 22:

Right Cylinder Head by tweiss3, on Flickr

Cylinder #1 Head by tweiss3, on Flickr

Camshafts by tweiss3, on Flickr

Cylinders 1 through 3 by tweiss3, on Flickr

Left Head by tweiss3, on Flickr

Left Bank Cylinders by tweiss3, on Flickr

Bottom End by tweiss3, on Flickr

Had a few rough bearings, however there was no wear on the crank, thank goodness:

Cylinder #3 Rod Bearings by tweiss3, on Flickr

Cylinder #1 Upper Rod Bearing by tweiss3, on Flickr

Bottom End without rods by tweiss3, on Flickr

Right Bank by tweiss3, on Flickr

Left Bank by tweiss3, on Flickr

After the hardest part of the entire teardown, seperating lower and upper block

Freed Crank by tweiss3, on Flickr

Lower Block Half by tweiss3, on Flickr

Upper Block by tweiss3, on Flickr

Thrust bearing had some serious wear, but to be expected on a manual transmission car:

Thrust Bearing by tweiss3, on Flickr

Interesting find, still had the assembly date written on the inside:
Still has the build date on it by tweiss3, on Flickr


Now the parts are all stored away and the block is under plastic wrap till I can get it to the machinist.

July 2:
On my way to drop parts at the machine shop now.
 
7/17/12 Update:

Time for a long needed update.

I got a call yesterday about the block at the machine shop. It looks like I need a bore 20 thousandths over, so at this point I am narrowing down the exact piston to order for this overbore. Going OEM style.

On a better note, I picked up my heads from the other shop. Had all new felpro valve guide seals and a 5 angle valve job. For $279, it was one heck of a deal, since the sonic dip was included.


sexy heads with valve job by tweiss3, on Flickr

sexy heads with valve job by tweiss3, on Flickr

This is a good close on what was beginning to be a quite discouraging journey.

Anyways, going to have to wait on pistons and rings to finish the machine work. The rotating assembly balance is definitely needed with the new pistons, and this sucker should run like a factory freak with the boltons (fidenza flywheel and fx300)
 
Back