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Flathead 255 V8 rebuild thread

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Old Jan 31, 2017 | 11:09 PM
  #31  
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Is that pitting on the one end? (black)

I don't think it really matters which way it goes, but the end without grooves would be better pointing out, unless it's pitted. Check where the rope seal falls, I believe it will be where the pitting is.
 
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Old Feb 4, 2017 | 11:28 AM
  #32  
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Crankshaft is in. I plastigaged the mains and had a little less than 0.002 clearance. I hearted the crank gear in the oven and it just slid on. I used the correct size key from van pelt and it protruded just enough to catch the slinger. Slid the extension on then the pulley.

Pistons are next. I sized the rings and have 0.015 ring gaps which I think is fine.


 
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Old Feb 5, 2017 | 12:14 AM
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All of the pistons are in and valves set. I torqued the rod bearings down to 45 lbs. Time for the bolt on's.

JB
 
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Old Feb 5, 2017 | 09:41 AM
  #34  
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it was late last night when I finished adjusting the valves but glad that is done. I did run into a snag on #5. The rod oil hole was in a different location and did not line up with the bearing. Off by about 1/4". I polled the guys on fordbarn and seemed the consensus was to cut a groove on the back of the bearing to get to the oil hole. I used a dremel and cut a very shallow impression for the oil flow. I had a spare # 5 rod with oil in correct location but was afraid to use it since it was not balanced with the rotating assembly.

JB
 
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Old Feb 5, 2017 | 06:49 PM
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Front timing cover on, water pumps installed, oil pump and screen in, and finally the oil pan.

On the oil pump, I had a hard time getting the torque wrench on the mounting bolt. I ended up using a crows foot on it to get it to 12 lbs, worked fine.

i am using a best gasket set and the seals had no instructions or spacer/knife so I didn't trim anything. Everything seemed to compress and seal on both ends.

I have a couple of spots I need to touch up with paint on the bottom of the engine. What can I use to prep the block where oil has been? Soapy water on a sponge?

getting to the point where I need to move the engine off the stand and get on a pallet for the remaining bolt ons and initial firing. The aeight is starting to build. What have you guys used as supports for the front?

JB
 
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Old Feb 5, 2017 | 06:51 PM
  #36  
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Picture of where I am so far.

 
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Old Feb 5, 2017 | 07:04 PM
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I would definitely put the heads on while it's on the stand, and stop there. Torquing the head bolts is s-o-o-o much easier there, just arrange your wrench so you aren't putting a tipping force on the stand. Seal up the intake deck and exhaust ports. Are you lifting from the intake holes or the exhaust ports, or -?-

You can stack 4x4's to support the feet on the water pumps. At the rear you almost have to make a U-shaped stand of heavy angle iron bolted to the BH holes.

Putting the flywheel on when it's in the truck is a lot easier, along with the clutch, IMO.
 
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Old Feb 5, 2017 | 07:34 PM
  #38  
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I planned on lifting with my 4 point hoist with grade 8 bolts in the intake. Using some gasket material and a washer to avoid damage to the deck.
 
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Old Feb 8, 2017 | 09:04 PM
  #39  
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Went back and checked the valves one more time and adjusted a few that were about a 000 too loose. Set it at top dead center on #1, ready to mount the heads. Added the exhaust manifolds and torqued those down to about 23lbs after coating the threads with high temp antiseize.

JB
 
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Old Feb 11, 2017 | 11:31 AM
  #40  
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Ready to pull the engine from the stand.

I cleaned the deck and used grease on all 4 surfaces on each head install. For the head bolts I used permatex aviation and torqued to 45lbs. For the oil pan I used hi tack on the pan and grease on the block with a little the right stuff at the front and rear seals. Using 160 thermostats and dropped those in last.


 
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Old Feb 11, 2017 | 01:43 PM
  #41  
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Where did you see a recommendation to go to 45 ft-lbs? 55 is more common with cast iron heads, 65 - 70 is factory spec.
 
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Old Feb 11, 2017 | 03:52 PM
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I thought Ron was a fan of 45 or was that with just aluminum?
 
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Old Feb 11, 2017 | 04:02 PM
  #43  
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I think 45 ft-lbs is for Aluminum. Ross is right on cast iron

Great Looking Engine! I can't wait to hear it run!

Keith
 
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Old Feb 11, 2017 | 04:58 PM
  #44  
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Thanks, I ran it up to 55. Had to use a crowsfoot on the bolts at the water outlet to avoid taking all that apart. Spark plugs are in.

JB
 
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Old Feb 12, 2017 | 09:46 PM
  #45  
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Ran out of bolts on the starter plate and had to stop. Everything is sealed off, but need to circle back on a few minor things like tweaking the steel fuel line to not be so tight and an oil canister lid bolt gasket.

I need to work on the air cleaner clamp as it's still a little loose even after tightening.





 
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