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Author Topic: Flywheel Nut  (Read 1283 times)

raoleo

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Flywheel Nut
« on: August 09, 2015, 08:11:13 PM »
I am getting ready to rebuild my ST1, after my cam gear came apart.  Does anyone know what size the large retaining bolt is on the flywheel?

manfromthemist

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Re: Flywheel Nut
« Reply #1 on: December 16, 2019, 08:51:17 PM »
I've measured it at 2" and 7/32, i'm finding it hard to get an imperial socket that big so i've ordered a 56mm six point draper impact socket for 14 from Amazon.

Willw

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Re: Flywheel Nut
« Reply #2 on: December 17, 2019, 12:05:12 AM »
I just started work on an ST1 and an SR1 last week and I was faced with the same dilemma.

According to my measurements the nut is 56mm, but my local hardware store doesn't stock that size. I tried a 55mm but it was too small.

On YouTube there is a video where a guy uses a 2-1/4 socket to loosen the bolt on an LD1, so I bought one of those.

It fits a bit looser than I would like, and I haven't actually used it yet, but hopefully it will work for me too.

Video here https://www.youtube.com/watch?v=2HUhSHeK5kc&t=194s

For some reason the video doesn't seem to start at the beginning but you can back it up using the mouse on the progress bar.
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cobbadog

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Re: Flywheel Nut
« Reply #3 on: December 17, 2019, 03:37:16 AM »
Use a bit of shim inside the socket if it is a bit loose. If no shim an aluminium drink can can be cut up and used.
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mike90045

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Re: Flywheel Nut
« Reply #4 on: December 18, 2019, 05:04:30 PM »
Auto parts stores often have large sockets for FWD car hubs. 

Willw

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Re: Flywheel Nut
« Reply #5 on: December 19, 2019, 02:20:00 AM »
I will try the drink can trick. Thank you.
Daily driver '97 GMC W4 tipper on WVO/Kerosene mix.
6/1 clone standby generator.
Too many projects.