Torquing bolts

[the1pig]

OK here is another newbie question but thank you for your help. If there is not a Spec for certain bolts to be torqued what is the standard? Just hand tight?

Thanks again for all you help.

I will start putting her back together tomorrow baring any unforeseen difficulties.

[salty_monk]

Depends on the size of bolt & what it's going into... Can you be more specific?

Dan

[the1pig]

not really it is more of a general question. i am doing a top end rebuild and getting ready to put it back together.

I noticed some bolts like the cam chain guides do not have recommended torque specs.

[76FJ55]

there should be a table of torque values listed in the manual as standard for each given diameter and thread pitch. these are the values to use when there isn't one called out for the specific location / application.

[Steve]

Here is a copy of the chart that 76FJ55 was talking about, taken from the factory 850 manual:



.

[simon kuether]

Do them up till they break or strip ,then back them off half a turn.Cheers,Simon.

[Steve]

Do them up till they break or strip ,then back them off half a turn.Cheers,Simon.

If you need them tighter than that, only back of a quarter turn.

.

[asetech]

If you need them tighter than that, only back of a quarter turn.

.

I like to use my 3/4 inch impact

[marz]

well the air impact is o.k. but a four foot torque wrnech is beettr. cause you know how much .. power your useing..for over tightening.. you know the ones they use on massive diesil ships..

[the1pig]

Do them up till they break or strip ,then back them off half a turn.Cheers,Simon.

That is why I love this site the years of personal experience is better then any other shop I could call or book I can read. Thanks for the information.

[mighty13d]

did someone say something about a torque multiplier???

http://buy1.snapon.com/catalog/item.asp?P65=&tool=all&item_ID=8795&group_ID=978&store=snapon-store&dir=catalog

I've used this one before with a 3 foot ratchet with a 4 foot pipe on the end of that before and not been able to remove a nut. Then it's time to dig out the 'liquid wrench'. AKA, oxy-acetylene torch!

[Steve]

well the air impact is o.k. but a four foot torque wrnech is beettr. cause you know how much .. power your useing..for over tightening.. you know the ones they use on massive diesil ships..

Did you say "massive diesil ships"?
Here is an engine for one:

Then it's time to dig out the 'liquid wrench'. AKA, oxy-acetylene torch!

"Liquid Wrench" is NOT the same as a torch.

By the way, the oxy-acetylene torch is more-commonly known as a "blue-tipped wrench".

.

[mighty13d]

you mean you didn't know what i was thinking??? geesh

[mcloud]

That is why I love this site the years of personal experience is better then any other shop I could call or book I can read. Thanks for the information.

I never back them off once stripped, no use. Spot weld them

[mcloud]

Intake boot o'ring