The Ford Barn

countrysquire · 03-16-2014, 03:39 PM

OK, the engine is out and everything but the rotating assembly has been taken apart. Here's my initial observations while tearing it down.

Relatively clean inside, piston tops have a bit of carbon, more than I would have expected.
Flat top .060" over pistons, no ridge at the top of the cylinders, just a layer of carbon.
The cylinder walls have a nice glaze, no crosshatching is visible.
The cam is out, and it's labeled CRANE F-294-2. A search of Crane's website and a Google search don't come up with anything. I did find some stuff about an F-294 cam for an FE, but no telling if it has the same profile.
Once I get the garage back in order, I will pull the bottom end apart, starting with #4 (the one with 75% leakdown). I'm guessing the ring lands are full of carbon, but we'll see.

countrysquire · 03-16-2014, 06:24 PM

#4 piston is out, but the rings weren't stuck like I was suspecting. However, the compression ring gap overlapped about 50%, so that should explain the leakdown for that cylinder.

I did a quick check on the bore and came up with 3.860", which can't be right. I don't have a bore gauge, so I have to do it with dividers and caliper, but that should be close enough for a rough measurement. I triple check, even changing calipers, but get the same reading. How could it be .110" over and be running .060 pistons? Could this be a 312? So I check and see the stock bore for a 312 is 3.800". Looking at McMaster's & Mummert's sites confirms that it's a 312. Casting number is ECZ-6015-C and it has ECZ main caps. The heads are the ECZ-G.

40cpe · 03-16-2014, 07:09 PM

It looks like you lucked up.

countrysquire · 03-16-2014, 07:31 PM

Yeah, normally I do something that rhymes with that!

Tinker · 03-16-2014, 08:45 PM

Pictures or it never hapened, ha ha.

Sounds like you have it pin pointed. Nice work!

countrysquire · 03-16-2014, 09:14 PM

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Now I'm curious to see how they lined up the other rings...

sprink88 · 03-16-2014, 09:19 PM

THATS how the rings looked??? Wow

40 Deluxe · 03-17-2014, 02:25 AM

Be sure to check ring gap with the rings in the cylinders. Someone may have used 292 rings so the gaps are huge. Normally it does not matter where the ring gaps are because the gap area is so small and the rings constantly rotate in their grooves anyway. So the gaps will all line up and then move on, not lining up. Doesn't affect how the engine runs at all. You need to be concerned more with how well the rings are sealing against the cylinder walls as well as the ring lands (check for side wear on the rings).

darrell · 03-17-2014, 08:20 AM

with the ecz caps you do have a 312 but its common to bore a 292 to that size.the wristpin is in the same location so no problem.whoever did your engine was no pro.

LOWRIDER · 03-17-2014, 10:00 AM

X2 what 40 Deluxe said. Urban legend that it won't run correctly w/ the ring gaps lined up.

countrysquire · 03-17-2014, 06:46 PM

Measured gap on one of the compression rings on the #4 cylinder and it's .025", which is in Ford's spec range of .010 - .027", so they are the right rings.

TedEaton · 04-12-2014, 07:21 AM

Quote:

Originally Posted by countrysquire

Now I'm curious to see how they lined up the other rings...

It's not unusual for the rings on a piston to be aligned once the engine has run for awhile. The rings do rotate normally and once the two compression rings align, they'll have a tendency to stay that way as it's the path of least resistance.

03-16-2014, 03:39 PM	#101
countrysquire Senior Member Join Date: Feb 2012 Location: League City, TX Posts: 220	Re: Y Block Help Needed OK, the engine is out and everything but the rotating assembly has been taken apart. Here's my initial observations while tearing it down. Relatively clean inside, piston tops have a bit of carbon, more than I would have expected. Flat top .060" over pistons, no ridge at the top of the cylinders, just a layer of carbon. The cylinder walls have a nice glaze, no crosshatching is visible. The cam is out, and it's labeled CRANE F-294-2. A search of Crane's website and a Google search don't come up with anything. I did find some stuff about an F-294 cam for an FE, but no telling if it has the same profile. Once I get the garage back in order, I will pull the bottom end apart, starting with #4 (the one with 75% leakdown). I'm guessing the ring lands are full of carbon, but we'll see.

03-16-2014, 06:24 PM	#102
countrysquire Senior Member Join Date: Feb 2012 Location: League City, TX Posts: 220	Re: Y Block Help Needed #4 piston is out, but the rings weren't stuck like I was suspecting. However, the compression ring gap overlapped about 50%, so that should explain the leakdown for that cylinder. I did a quick check on the bore and came up with 3.860", which can't be right. I don't have a bore gauge, so I have to do it with dividers and caliper, but that should be close enough for a rough measurement. I triple check, even changing calipers, but get the same reading. How could it be .110" over and be running .060 pistons? Could this be a 312? So I check and see the stock bore for a 312 is 3.800". Looking at McMaster's & Mummert's sites confirms that it's a 312. Casting number is ECZ-6015-C and it has ECZ main caps. The heads are the ECZ-G.

03-16-2014, 07:09 PM	#103
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Re: Y Block Help Needed It looks like you lucked up.

03-16-2014, 07:31 PM	#104
countrysquire Senior Member Join Date: Feb 2012 Location: League City, TX Posts: 220	Re: Y Block Help Needed Yeah, normally I do something that rhymes with that!

03-16-2014, 08:45 PM	#105
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Y Block Help Needed Pictures or it never hapened, ha ha. Sounds like you have it pin pointed. Nice work!

03-16-2014, 09:19 PM	#107
sprink88 Member Join Date: Mar 2012 Posts: 39	Re: Y Block Help Needed THATS how the rings looked??? Wow

03-17-2014, 02:25 AM	#108
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,779	Re: Y Block Help Needed Be sure to check ring gap with the rings in the cylinders. Someone may have used 292 rings so the gaps are huge. Normally it does not matter where the ring gaps are because the gap area is so small and the rings constantly rotate in their grooves anyway. So the gaps will all line up and then move on, not lining up. Doesn't affect how the engine runs at all. You need to be concerned more with how well the rings are sealing against the cylinder walls as well as the ring lands (check for side wear on the rings).

03-17-2014, 08:20 AM	#109
darrell Senior Member Join Date: Dec 2010 Location: p.e.i. Posts: 1,060	Re: Y Block Help Needed with the ecz caps you do have a 312 but its common to bore a 292 to that size.the wristpin is in the same location so no problem.whoever did your engine was no pro.

03-17-2014, 10:00 AM	#110
LOWRIDER Senior Member Join Date: May 2010 Location: Kingman Az. 86409 Posts: 419	Re: Y Block Help Needed X2 what 40 Deluxe said. Urban legend that it won't run correctly w/ the ring gaps lined up. __________________ Dan Kingman Az. 86409

03-17-2014, 06:46 PM	#111
countrysquire Senior Member Join Date: Feb 2012 Location: League City, TX Posts: 220	Re: Y Block Help Needed Measured gap on one of the compression rings on the #4 cylinder and it's .025", which is in Ford's spec range of .010 - .027", so they are the right rings.