Crank pulley bolts

rotorhead22

Active Member

Dec 17, 2020

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Wesley Chapel, Florida

Mar 4, 2021

#1

• Mar 4, 2021

• #1

So I bought a Mr Gasket underdrive pulley set for my 89 notch. I was in the process of upgrading the alternator to a 3G so a deal on EBAY caught my eye. Well the description was 100% accurate except that apparently there are some bolts with these pulleys that weren't included for the crank pulley because the stock bolts are too close to the pulley inner wall and wont accept a standard socket. Can I use Allen Head bolts with washers or is there another alternative?

 

Potomus Pete

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Mar 4, 2021

#2

• Mar 4, 2021

• #2

Usually that's what they include allen head bolts

 

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Mod Dude

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#3

• Mar 4, 2021

• #3

Yup, underdrives are usually supplied with allen head bolts and washers

 

90sickfox

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#4

• Mar 4, 2021

• #4

I third what was said above.

 

rotorhead22

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Dec 17, 2020

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Mar 5, 2021

#5

• Mar 5, 2021

• #5

Thanks for the replies. I spent about six minutes blindly trying to get that socket on before I realized what was up. My favorite place Ace Hardware had just the right ones

 

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jrichker

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#6

• Mar 5, 2021

• #6

rotorhead22 said:

Thanks for the replies. I spent about six minutes blindly trying to get that socket on before I realized what was up. My favorite place Ace Hardware had just the right ones

Click to expand...

OOOOPS!!! the crank pully bolts are grade 8 high strength bolts. You need so grade 8 or better Allen head cap screws.

See https://www.google.com/search?ei=Hw...&ved=0ahUKEwj7i5Ot6ZrvAhUXWs0KHZEqB44Q4dUDCA0 for more help.

 

Last edited: Mar 5, 2021

rotorhead22

Active Member

Dec 17, 2020

175

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Wesley Chapel, Florida

Mar 6, 2021

#7

• Mar 6, 2021

• #7

jrichker said:

OOOOPS!!! the crank pully bolts are grade 8 high strength bolts. You need so grade 8 or better Allen head cap screws.

See https://www.google.com/search?ei=HwRDYLuAC5e0tQaR1ZzwCA&q=3/8X16++GRADE+8+ALLEN+HEAD+BOLTS&oq=3/8X16++GRADE+8+ALLEN+HEAD+BOLTS&gs_lcp=Cgdnd3Mtd2l6EAwyBQgAEM0CMgUIABDNAjIFCAAQzQIyBQgAEM0COgcIABBHELADUJ2gBFi5wARgivAEaAFwAXgAgAGDAYgB4wWSAQM2LjKYAQCgAQGqAQdnd3Mtd2l6yAEIwAEB&sclient=gws-wiz&ved=0ahUKEwj7i5Ot6ZrvAhUXWs0KHZEqB44Q4dUDCA0 for more help.

Click to expand...

Good catch, I will definitely fix that