Torque wrench how to question
 

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.

This link should help.

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

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

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.

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

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.

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

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.”

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.

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.

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.

Curious what is this bolt on?

Maybe you said above but didn't see it.

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.

BMW 330ci crankshaft bolt.

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

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

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

415 Nm

This ^

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

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

LOL

nicely played.