Golfpin,
I did not say Merlin I think you did.
P-51 Mustang used the GM Allision V12 that's why you are asking about GM my GM reference.
The tube or bar is in place of the crankshaft with-out bearings to check for true.
Bad screws/bolts are just that screws/bad bolts.
You can also us...
Hi Golfpin,
Yes sir TTA was used on the mains. In the GM service manual it showed you have to check the crankshaft main housing bore for size. Next GM supplied a Ground Bar or Tube that you slipped into the block. Next installed and tightened the caps in place. Now the test is if the bar could...
BigClive,
Check out this site very good easy for all to understand. Nose around as he has layer after layer great information. http://www.boltscience.com/
No I have nothing to do with him or the site.
Regards,
Mike
Mike Caruso
www.aera.org
Agreed,
Yes the OEM have wonderful TTY tightening machines on the assembly line. I know Ford has since the head fastener change in 1992.5 on the Ford 5.0L H.O. engines and I am sure there are many more.
Bottom line......The OEM knew by reducing scatter of fastener clamp load they would pay out...
Hi,
Yes you are correct (Main ones I can think of are brand of screw or stud, brand and hardness of washer used or even no washer used, lubrication used or even none at all etc?)
The testing I did they was Factory OEM GM NEW head bolts. Lube, Material and washers being stamped or ground.
EP...
Screws or studs test for load/length in MTS.
Parallel grind ends screws or studs.
Install screws or studs no load and check free length using ultrasonics.
Tighten using ultrasonic checking for length required to produce correct clamp load.
Keeping track of required torque which will blow you...
Guys,
You can use John Deere engine Breakin oil if you think you have a ring to cylinder wall issue. It has fixed many fresh rebuilt engines which had a gasoline wash of the cylinder walls and were using 1 qt of oil in 200 miles. switched to J/D oil and now uses 1 qt maybe in 3000 miles. This...