Torque wrench how to question

[A930Rocket]

I need to torque a bolt to 305 foot pounds. I have a 1/2” Snap On that goes to 200 and a 1/2” Kobalt that goes to 250.

If I use one of them set at 100 ft lb and use a 3’ cheater tube on it, will that get me 300 ft lb?

I need to get this installed tomorrow, and looking online, I don’t see one available nearby.

[sc_rufctr]

This link should help.

https://www.terex.com/docs/librariesprovider7/tech-tips/techtip_53.pdf?sfvrsn=1371ae74_10

[mistertate]

No, but it will make it a lot easier to torque 100 lb-ft

[Pazuzu]

You meant to say 30 foot cheater, right?

15 pound barbell weight, tied to a 20 foot cheater, on a 3/4 drive breaker bar is 300 ft/lbs.

So is a 100 pound weight tied to a 3 foot cheater bar.



Just take biggest breaker you have, and stand on it. You'll get close enough.

[masraum]

Yep, can't use your current torque wrenches to make this happen.

[john70t]

300 ft/lbs on a 1/2" torque wrench will probably be best using the Snap-off brand.
(Round-off is the correct 12pt socket to use)
I've used those before while jumping on cheater bars.
You'll get brand new tools as a bonus.

See if someone (tractorsupply/bigbox/autoparts) carries torque multipliers and impact sockets.

[Bill Douglas]

Originally Posted by A930Rocket

I need to torque a bolt to 305 foot pounds.

I think them saying 305 foot pounds is just a polite way of saying "Get the bolt tight as hell."

[McLovin]

Originally Posted by A930Rocket

If I use one of them set at 100 ft lb and use a 3’ cheater tube on it, will that get me 300 ft lb?

No, but it’ll get you to 100 ft lb easier!

I have the same issue currently. I need 325 ft lb. on a front crank hub nut.

I went to a long time shop in my area to see what they do. I was surprised when they told me they don’t have a torque wrench that goes up that high, they just do it “as tight as possible.”

[McLovin]

It took all of my effort with a 4.5 foot breaker bar to get the nut loose.
And that’s with PB Blaster and a propane torch.

[A930Rocket]

When I typed my question, it didn’t sound right for torquing a bolt. I’ll torque it to 250 and see what I can do after that. I used a six point impact socket on a 18 inch breaker bar and a 3 foot galvanized pipe to break it free. I wasn’t sure my the flywheel pin would hold.

[1990C4S]

Originally Posted by Bill Douglas

I think them saying 305 foot pounds is just a polite way of saying "Get the bolt tight as hell."

Yea, have to agree.

Other options: 1/2" electric impact will get you 300 lb-ft easily.

A 2' bar with a 150 lb person will do it....

Axle nut?

Last option: stop at a diesel mechanic shop. 300 lb-ft is finger tight for them.

[URY914]

Originally Posted by A930Rocket

I need to torque a bolt to 305 foot pounds. I have a 1/2” Snap On that goes to 200 and a 1/2” Kobalt that goes to 250.

If I use one of them set at 100 ft lb and use a 3’ cheater tube on it, will that get me 300 ft lb?

I need to get this installed tomorrow, and looking online, I don’t see one available nearby.

Curious what is this bolt on?

Maybe you said above but didn't see it.

[john70t]

Originally Posted by A930Rocket

used a six point impact socket on a 18 inch breaker bar and a 3 foot galvanized pipe to break it free

errrr...use the same effort and tools but in the opposite direction?

I'm guessing 305 is about 250 plus a 1/16th-1/8th turn.

[A930Rocket]

Originally Posted by URY914

Curious what is this bolt on?

Maybe you said above but didn't see it.

BMW 330ci crankshaft bolt.

In replacing the lifters on the car, I decided to go ahead and change the timing chains, ramps, etc.

[masraum]

I like how it's 305, not 300, not 350, 305. It would have been even better if the spec said "307.3"

[john70t]

German engineering.
Anything out of .005% tolerances results in the front wheels bouncing a foot off the ground at highway speeds.

[1990C4S]

Originally Posted by masraum

I like how it's 305, not 300, not 350, 305. It would have been even better if the spec said "307.3"

415 Nm

[island911]

Originally Posted by 1990C4S

...

A 2' bar with a 150 lb person will do it....

..

This ^

A 200 lb person stand on a 1.5-ft bar will do it too.

[1990C4S]

Are you 305 lbs? That makes the math easy...

[island911]

LOL

nicely played.