The shorter bolts were in the back cap.  Head bolts were correct also.  The broken motor mount bolt that has been there for a half century finally came out today! 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Paul, thanks for reminding me of a possible diff. in bolt lengths.  I kept bolts and caps together, and will look tomorrow.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Mike, I'm curious to know if they got the right main cap bolts in the right main caps. The rear main cap should have slightly shorter bolts than the other mains.

Best regards,



Paul Menten

Meridian, Idaho

Todays teardown revealed a 10/10 crank.  There is a little wear on one of the rod journals.  A 20/20 crank is likely. 

The Pistons looked great.  I will let the machinist say if it needs bored.  I sure hope not, because the other set of 312 pistons on hand are .040 too. 

The cam had a weird wear pattern.  Instead of a nice ovate provile it was definitely stepped.  Too bad since it looked like something exotic, different intake and exhaust profiles and different lifts. 

The piston to deck measurement was all over, from .028 to .038.  Rods had been resized, plus there was a mixed set.  A new set of JM rods may be the ticket. 

So the plan is to take in the block first and have it maged and checked for main bore line.  Also will deck .010 more.  Whoever put together the engine missed the reduction in main bearing bolt specs, because they were 128 ft. lbs.  I am keeping fingers crossed on that one. 

  

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Good information Glen, maybe someone will be able to use the low mount fan.

The bore is .040 OS, with a small wear ring at top of the cylinders.  Cant find my calipers.  Cylinders all looked good though pistons arent removed.  The block has been decked.  Edit:  After looking at the cylinder walls again with a flashlight, they will probably need to go another OS.  Hopefully there are some .060 OS pistons on hand. 

Heads look very good so far, havent removed any valves yet.  One looks like it was milled more than the other, but they havent been measured.  Rocker shafts show some wear and need replaced. 

The worst thing found is a broken bolt in one of the side mount engine bosses.  Maybe the broken bolt is from a wreck which resulted in the motor's removal from the original car.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

That front mount is also good for putting a y block in a hot rod, just fab up frame mounts and use the donut pads.

Glen Henderson



Freedom is not Free

Letohatchee, AL

Those engines can take HD use and still survive. There is likely nothing wrong with the crankshaft. Just an area to watch. I have a B9AE block that had a broken crank snout it checked out good.



We had a 59 F-600 COE as a tow truck. Were we had the crankshaft failures was in the winter time the drivers would get stuck in the snow and with no weight other than the deck on the truck they would put the truck in third gear, pin the motor and burn it till they got out. On the third time the boss was ....not happy. We put a later engine in it with the steel crank and no more problem. I think the steel cranks came out in 1961. That engine still was in the truck in 1974 when the truck was replaced.

There is good reason to believe the 312 sat in three different vehicles during the last 54 years.  Hopefully a fourth is in the future.

Upon finding out the motor went into the '59 from a COE coke truck and had Rams Horns, a steel crank possibility was my main hope.  When I looked at the engine the afternoon before pickup, I really didnt look at it.  Because upon first seeing the B intake it was obvious the engine was worth more than being asked, no matter what it was.

With the heavy duty service seen by the motor, a complete evaluation of the block  as well as the crank would be prudent. 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

The cab-over trucks had the fan placed like that on the end of the crankshaft. One of the big problems with the fan installed there was the fan sat a longways out from the front main bearing and if you revved the engine very high it would break the crankshaft snout behind the timing gear right at the main. Ford came out later with the steel crank for these engines. Trucks had 292's if that is a 312 someone has changed that engine during its lifetime. If you use that crank check it closely for either a bent or cracked snout.



marv

Is this really a good way to lower a fan? Seems like I've seen it before but had forgoten. Didn't even come to mind when we were talking about the hot rod application. Will other accessory pulleys work with it? Chuck in NH 

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire