Crank Bolt Tightening

Technical advice Q&A

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keithmac
Posts: 30
Joined: Sun Jan 22, 2017 2:54 pm
Location: Peterborough,On.
Canada

#1 Crank Bolt Tightening

Post by keithmac » Wed Jun 13, 2018 10:18 pm

Hi All
Engine /gearbox is rebuilt and back in. Any suggestions on how to get that bolt to 140 ft/lbs ?
Will high gear and brakes on work ?
Cheers
Keith
Early 1967 S1 OTS, 1952 MG TD

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abowie
Posts: 1885
Joined: Wed Sep 07, 2011 9:15 pm
Location: Australia
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#2 Re: Crank Bolt Tightening

Post by abowie » Thu Jun 14, 2018 12:50 am

You don't need to. All it does is holds the harmonic balancer in place on the cone.

We have a bracket that we have made up that locks into a tooth on the flywheel and holds the crank still. The crank bolt is done up tight with a 1 ft bar and maybe a little tap with a hammer. The lock tab stops it coming undone.
Andrew.
881824, 1E21538. 889457..oops
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

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Tom W
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Joined: Sat May 05, 2018 10:18 am
Location: UK
Great Britain

#3 Re: Crank Bolt Tightening

Post by Tom W » Fri Jun 15, 2018 8:22 pm

I did mine on the drive with the car in 4th gear and the handbrake on. I chocked the rear wheels too, and had the front wheels under the sills as an extra precaution as the front was on axle stands. I was able to do the nut up to 140lbft with my torque wrench. It took a bit of effort, but it’s possible. When I first did the job 5 years ago with the car in my cramped single garage, I couldn’t get myself into a position where I could do it up by hand, so I used my trolley jack to lift against the end of the torque wrench until it clicked.
Tom
1970 S2 FHC

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