Nogarage

Yesterday installed new timing chain, guides and tensioner, had conflicting specs for the torque of the two bolts that fasten the tensioner. So, I torqued them at 22 ft-lbs. Vehicle (22RE) is not buttoned up yet and today found out the torque is either 15 or 16....

So, mathematically, that means they are overtightened approx. 37%....

Am I answering this question myself just by using the word "overtightened"? ...hhhhmmmmmmm......

Does anyone have an opinion if I should go back in and set the bolts again? I was thinking if I do that, I'd use Loctite and then re-torque to 15/16. Thoughts? Anyone?

Nogarage

Yeah, OK, I know I gotta go back in.

wyoming9

iTrader: (1)

If you feel you need to.

About the only bolts I torque are head bolts main bearing and rod bolts and the fly wheel.

This is you truck do what you think is best.

I would worry more if you only finger tightened them and buttoned it up.

87yo_ta

15, 16 or 22. I don't think it matters much. I didn't torque any of them and got well over a hundred thousand miles on my last chain.

mct75

For such low values I doubt you'll mess up anything over tightening. Something that you TTY would be much more sensitive.

scope103

As a practical matter, the correct torque is "tighten it until the bolt breaks, and then one turn less." While I think low torque values are just as important as high ones (have you ever heard of someone BREAKING a head bolt? And yet people break valve cover bolts all the time).

But since yours didn't break, even at 37% too high, I would leave it alone.

Incidentally, how sure are you that your torque wrench is in calibration? I thought I was good, until I tested my 1/2" with a luggage scale, and then against another wrench.

Nogarage

Thanks. Thank you, thank you all for the input!!
I will not be going back in there now. If a bolt breaks or comes loose, or if there's a problem with the oil pressure, then I'll go back in and re-fasten the tensioner and guides. Not looking forward to scraping the gaskets again, but of course if need be, then need be.

For the sake of documentation, I'll post my attempts to start her when she's buttoned up.

Nogarage

She' s been buttoned up and running fine for almost 200 miles.
Oil pressure comes up immediately every time no matter what or where!
I'm real pleases. And, so far the chain guides haven't broken loose, so I'm just accepting that they are fastened fine. New water pump and oil pump too. Next before winter is new tires and shocks.
Thank you all for the input. Life's a blast.