SBO Crank Pulley Bolts

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foxtrot

Royal Smart Person
Dec 19, 2008
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Can someone tell me what size bolts are used on a SBO to attach the crank pulley to the harmonic balancer?
 
Oct 14, 2008
8,806
7,746
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Melville,Saskatchewan
Pretty sure it is 5/16" x 3/4" long. Also depends on what if any washers you are using. Grade 8 bolts might not be bad, I have broke a few.
 

foxtrot

Royal Smart Person
Dec 19, 2008
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590
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I'm really wondering how much of a PITA those old Allen bolts are going to be to remove? They've been in there for about ten years..
 
Oct 14, 2008
8,806
7,746
113
Melville,Saskatchewan
Probably should come out with a good, tight fitting allen head socket and a long 3/8" rachet.
 

foxtrot

Royal Smart Person
Dec 19, 2008
1,489
590
113
USA
By the way, the replacement bolts that I purchased today were grade-8, 5/16-18 x 3/4 " bolts.
 
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