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View Full Version : How important is a torque wrench?

The0wn4g3
08-20-2010, 12:14 PM
I'm looking to inspect the lift bolts on my 2zz. The TSB calls for 7 ft-lbf and 5 ft-lbf, but the minimum torque setting I can find on a wrench is 10 ft-lbs... So, if hand tighten + 1/4 turn of a wrench fine?
ajh1717
08-20-2010, 12:55 PM
IIRC, if you don't do it right, lift will not work at all. So in this case, it is pretty important. As far as the 1/4 turn, not sure if that will work.
GSBoek
08-20-2010, 12:59 PM
The lift bolts basically just serve to keep the rocker shafts from rotating under oil pressure and load from the rockers during lift. A careful handtight using a small ratchet should be fine.
Curt705
08-20-2010, 01:07 PM
A careful handtight using a small ratchet should be fine.

this

a torque wrench is as important as your life! but in this instance..a simple hand tightening until its "tight" will suffice
Gootz311
08-20-2010, 01:18 PM
I agree^.

I didnt use a torque wrench on my old celica, and the bolts worked just fine after the install. :gap:
The0wn4g3
08-20-2010, 01:23 PM
How about the bolts on the valve cover? I'll just have to guesstimate the torque on those, too
Curt705
08-20-2010, 01:29 PM
How about the bolts on the valve cover? I'll just have to guesstimate the torque on those, too

same thing...tighten down by hand until they "cinch" MAYBE a 1/4 turn past that. Don't wanna twist em off
GSBoek
08-20-2010, 01:30 PM
Those are pretty easy to strip so be careful with your guesstimates.
The0wn4g3
08-20-2010, 01:37 PM
Good to hear, Hopefully all goes well!
The0wn4g3
08-20-2010, 02:46 PM
One more question: gasket sealant. I've read some guides that say to clean off the old and apply new, then others don't mention it at all. What's the deal?
2KGTrd
08-20-2010, 10:07 PM
the valve cover gasket is a large rubber o-ring. there should be no re-sealing.
ateens4
08-20-2010, 10:14 PM
I didnt use a torque wrench on my old celica, and the bolts worked just fine after the install.
.
Curt705
08-21-2010, 05:46 AM
One more question: gasket sealant. I've read some guides that say to clean off the old and apply new, then others don't mention it at all. What's the deal?

I use indian head gasket sealer on any and all rubber or cork gaskets for that *extra reassurance ;)
The0wn4g3
08-21-2010, 12:23 PM
Yes, I know what a gasket is :)
The TSB calls for replacement of sealant at specific points along the surface of contact - why only at a few points, I don't know...
GSBoek
08-21-2010, 05:36 PM
You only need to use the sealant at the two contact points between the timing chain cover and the head. The reason why only those two points need the sealant is because those are the only places where there's a break in the contact surfaces of the gasket and the head/timing chain cover. Oil can seep paste the mating surface because it's not completely even.