how to retorque rod/main bolts
#1
how to retorque rod/main bolts
I pulled a main and rod to inspect the bearings and they look good. What is the proper way to reuse the bolts I loosened? I know I probably shouldnt, but this is a junk yard build. When it lets go I'll build a 6.0
any info in appreciated
any info in appreciated
#2
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The main should be 15 ft/lbs on the 1st pass then an additional 80 degrees.
The outer studs are also 15 ft/lbs but 53 additional degrees.
Side bolts are 18 ft/lbs
Connecting rods are 15 ft/lbs and 75 degrees.
I think that's right, but if I'm not, I'm sure someone will let me know.
The outer studs are also 15 ft/lbs but 53 additional degrees.
Side bolts are 18 ft/lbs
Connecting rods are 15 ft/lbs and 75 degrees.
I think that's right, but if I'm not, I'm sure someone will let me know.
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anything that uses a degree method is likely torque to yield which stretches the bolt and is good for only one time... subsequent uses will not yield the same clamping force and it may even break off.
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#9
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yes he is correct. I torque my inner bolts(1-10) first to 16 ft/lbs, then i set the thrust bearing. then tighten innner bolts 80*. torque outer bolts(11-20) to 16 ft/lbs, then tighten outer bolts 53*. Apply RVT to side bolt (21-30)heads and top threads, apply blue lock tight to bottom of bolts and toque to 19 ft/lbs
(main bolts)
29-25-21-23-27
19-15-11-13-17
09-05-01-03-07
-------------------> front (upside down on engine stand view)
10-06-02-04-08
20-16-12-14-18
30-26-22-24-28
make sure your crank turns over easy as butter by hand after your torque your main caps. if it doesn't you need to set your thruster bearing again. Then you can install your rod bolts
ps main bolts are reusable
(main bolts)
29-25-21-23-27
19-15-11-13-17
09-05-01-03-07
-------------------> front (upside down on engine stand view)
10-06-02-04-08
20-16-12-14-18
30-26-22-24-28
make sure your crank turns over easy as butter by hand after your torque your main caps. if it doesn't you need to set your thruster bearing again. Then you can install your rod bolts
ps main bolts are reusable
#10
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