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Everything Dirt Bike
General Dirt Bike
212 Tillotson shaft bolt size?!
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<blockquote data-quote="dirtrider998" data-source="post: 231577" data-attributes="member: 5763"><p>It's 5/16-24 FINE thread, NOT 5/16-18 more common in store bins. </p><p></p><p>I was able to get the stock bolt out with a giant channel lock with rubber sheet wrapped around the shaft and a breaker bar. Come to find it says 5/16 right on the bolt head (but not -24 or -18). </p><p>When I used Lowe's thread-checker it's not the more common 5/16-18, it's 5/16-24 and luckily that port apparently doesn't get used much because it wasn't cross threaded/damaged/questionable. 5/16-24 is fine thread and only could find these bolt in the Lowe's drawers section, they had stainless which is nice because it won't rust but stainless isn't that strong but they had Grade 5 isn't bad, the bin stuff is likely just grade-2 BTW. I might replace it with a grade 8 which is stronger and more corrosive resistant but grade-5 should be fine. I'm using grade-8s to mount the engine. </p><p>I don't know how deep the female threads on the shaft go and the Lowe's bolts aren't threaded all the way so I bought a pack of all the sizes from 1" to 3". </p><p>The guy in the video I linked also says for attaching the black triangle adapter plates which mount the torque converter safety cover you'll need 5/16-24 for those, and they're on the same side/face as the shaft which likely means everything on that side is 5/16-24 to bolt on a reduction gear (or these adapter plates) etc. take care.</p></blockquote><p></p>
[QUOTE="dirtrider998, post: 231577, member: 5763"] It's 5/16-24 FINE thread, NOT 5/16-18 more common in store bins. I was able to get the stock bolt out with a giant channel lock with rubber sheet wrapped around the shaft and a breaker bar. Come to find it says 5/16 right on the bolt head (but not -24 or -18). When I used Lowe's thread-checker it's not the more common 5/16-18, it's 5/16-24 and luckily that port apparently doesn't get used much because it wasn't cross threaded/damaged/questionable. 5/16-24 is fine thread and only could find these bolt in the Lowe's drawers section, they had stainless which is nice because it won't rust but stainless isn't that strong but they had Grade 5 isn't bad, the bin stuff is likely just grade-2 BTW. I might replace it with a grade 8 which is stronger and more corrosive resistant but grade-5 should be fine. I'm using grade-8s to mount the engine. I don't know how deep the female threads on the shaft go and the Lowe's bolts aren't threaded all the way so I bought a pack of all the sizes from 1" to 3". The guy in the video I linked also says for attaching the black triangle adapter plates which mount the torque converter safety cover you'll need 5/16-24 for those, and they're on the same side/face as the shaft which likely means everything on that side is 5/16-24 to bolt on a reduction gear (or these adapter plates) etc. take care. [/QUOTE]
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212 Tillotson shaft bolt size?!
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