I'm new at a fitting job. I have zero idea how plastigauge works. They just let me torque the main bearing. They don't tell the purpose of plastigauge. This videos helps a lot.
Your use of plastigage was spot on. That looks like a 3-53 Detroit main cap bolts final torque 130 ft # or 177 NM. 3-71 Detroit 184 ft # 250NM final torque. 30wt oil on threads and under heads of bolts
Was that your daughter. That was funny right there. Been about 10 years since I've used plastiguage. Works well if used correctly. Just wanted to brush up to use it on an engine I'm building. Well done......She needs a little practice though.
You would do it first with old bearings to find current oil clearances if bearing or journals aren't scored. Then with the new bearings to find oil clearances after replacement. Gives you an idea of wear length from the last bearing changeout.
IT IS NOT OKAY to leave the plastigauge in there! That is bad information and not the way to use properly. If you leave it in there it takes all the clearance out of the bearing and journal. There is no way for the journal to float in a pressurized film of oil if that crap is in there forcing what would have been the clearance over to one side. Take a guess what happens the first few crankshaft rotations before that crap blows out of the bearings and you have metal to metal contact in there? You literally do not want metal to metal contact in your bearings, ever! And you are forcing it to do exactly that on initial start up. Plastigauge works fine for what it is, but it needs to be removed and cleaned before final assembly.
No "professional" should be using Plasti Crap. You should have the correct tools. And no way that was 290 foot pounds! Barely more than hand tight. Inch pounds maybe.
Watching from Qatar 🇶🇦
I'm new at a fitting job. I have zero idea how plastigauge works. They just let me torque the main bearing. They don't tell the purpose of plastigauge. This videos helps a lot.
Your use of plastigage was spot on. That looks like a 3-53 Detroit main cap bolts final torque 130 ft # or 177 NM. 3-71 Detroit 184 ft # 250NM final torque. 30wt oil on threads and under heads of bolts
Good job
Thank you for the great video you made it uncomplicated for us newbies
That was no 290 foot pound pull, you ain’t fooling no one.
Was that your daughter. That was funny right there. Been about 10 years since I've used plastiguage. Works well if used correctly. Just wanted to brush up to use it on an engine I'm building. Well done......She needs a little practice though.
290 in lbs is reasonable. not foot lbs. just saying. 290 foot pounds would snap that bolt so fast.
The actual torque spec for the 53 series is 120-130 FTLBS.:) I think he mixed it up with the front crank pulley bolt that is 290 FTLBS.:)
Should I use the plastic gauge with old or new connecting rod bearing and crankshaft bearing?
You would do it first with old bearings to find current oil clearances if bearing or journals aren't scored. Then with the new bearings to find oil clearances after replacement. Gives you an idea of wear length from the last bearing changeout.
What happens if you're installing new components and the gap is too tight?
Little to no oil which will fuck up everything
IT IS NOT OKAY to leave the plastigauge in there! That is bad information and not the way to use properly. If you leave it in there it takes all the clearance out of the bearing and journal. There is no way for the journal to float in a pressurized film of oil if that crap is in there forcing what would have been the clearance over to one side. Take a guess what happens the first few crankshaft rotations before that crap blows out of the bearings and you have metal to metal contact in there? You literally do not want metal to metal contact in your bearings, ever! And you are forcing it to do exactly that on initial start up. Plastigauge works fine for what it is, but it needs to be removed and cleaned before final assembly.
foot lbs. ??? , are you sure, always clean your bearing surface before using plastigage
He said INITIAL torgue which in most cases is half or less than half of final torque.
what do i twerk my bolts to
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No "professional" should be using Plasti Crap. You should have the correct tools. And no way that was 290 foot pounds! Barely more than hand tight. Inch pounds maybe.
Some people don't have the money to buy some of these tools.