Plain Jane OEM nothing to see here rebuild

[RETed]

Originally Posted by JustJeff

I can get a Craftsman click wrench for $70...that I can justify spending if my beam type shows to be innacurate.

One problem with the beam-type is that parallax can be a problem.
Depending on gradiation, you could be off by as much as 5 lb-ft in some cases...

This is why I asked what #'s were you shooting for.
If you're trying to shoot for 25 lb-ft, if we account for possible parallax error, it could be as low as 20 lb-ft...
20 lb-ft is a bit too low for most rebuilders.


-Ted

[JustJeff]

Originally Posted by RETed

One problem with the beam-type is that parallax can be a problem.
Depending on gradiation, you could be off by as much as 5 lb-ft in some cases...

This is why I asked what #'s were you shooting for.
If you're trying to shoot for 25 lb-ft, if we account for possible parallax error, it could be as low as 20 lb-ft...
20 lb-ft is a bit too low for most rebuilders.


-Ted

IRRC I did the tension bolts to 30lbs. I was very thorough in checking them repeatedly. As you tighten them it lessens the torque on the ones tightened before the most recent. I went back through and checked them a few times.

I may do a little experiment. I may buy both a cheap Harbor Freight clicker as well as a Craftsman. I've got some spare trashed n/a irons. I may find a spot to tighten a bolt down with all 3 wrenches and see how much variance there is. Maybe just do a nut on an exhaust stud?

[RETed]

Originally Posted by JustJeff

IRRC I did the tension bolts to 30lbs. I was very thorough in checking them repeatedly. As you tighten them it lessens the torque on the ones tightened before the most recent. I went back through and checked them a few times.

Very good point...
I'll normally do a minimum of 4 rounds of tightening the tension bolts.
1st @ 10 lb-ft
2nd @ 20 lb-ft
3rd @ 30 lb-ft
The above is done with the Mazda recommended torque pattern in the FSM.
I'll do one last torque down set at the same 30 lb-ft final but just go around in a clockwise pattern - that's #4.

I may do a little experiment. I may buy both a cheap Harbor Freight clicker as well as a Craftsman. I've got some spare trashed n/a irons. I may find a spot to tighten a bolt down with all 3 wrenches and see how much variance there is. Maybe just do a nut on an exhaust stud?

Good idea but stay away from the exhaust fasteners.
Most dedicated exhaust fasteners have special (thread) profiles to keep them snug - usually the female or nut side of things.
Torquing and retorquing might not be consistent.
I'll try and pick something else?


-Ted