Well I got my jegs rod bolt stretch ga. in and I just want to make sure I'm reading to ga. correctly. Specs for OEM ITR rods say tighten to .002-.003, if each tick mark on the ga. is .0005 the proper reading will be between lies 4& 6 on the face of the ga. keep in mind this is being done after the ga. is zeroed in on the rod bolt.

 

yes sir....

what i do is zero out the gauge before each bolt, torque it to the specified value with a reputable torque wrench... then reinstall the gauge on the bolt and stretch it to the precise measurement..

If the bolt was stretched past the specified measurement after torqueing it with the torque wrench, then you had a bad bolt from the begining...

good luck

 

Well according to the haynes manual they don't give the tq specs for the ITR OEM rods they just give the rod bolt stretch specs and thats it. This is my 1st piston job and I'm just lining all my info up before I start so it'll be smooth sailing hopefully. Is it normal to tighten bolt w/o tq spec and only rod bolt stretch specs???

 

.0005" is every minor mark on the gauge. .001" is every major. Every two minor marks is the next major mark. The minor marks are usually not labeled with a number.

Using torque to set fastener tension is the least accurate of the three most common ways to do it. It's the least accurate because it can be affected by the amount of friction working against the threads and the seat of the bolt or nut. Setting the tension by stretch or by angle removes that variability in the procedure.

.002" to .003"? I've got .005" to .006" of strech.

 

You're right it's 0.005-0.005 NOT 0.002-0.003 I mis-read the manual. Like I said I just want to line up all my info correctly before starting this porcess, since this is my first internal job!!!

 

I dont have a Stretch Gauge but I do have my Snap on digital torque wrench that also does torque angle / What would be the Angle Spec for the ITR Rod bolts?

 

Or better yet can i use a dial indicator set to inches?