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Gallery Gasket Time?

Well, I think I made a pretty stupid mistake. When I was turning the motor over by hand to time it, I didnt use the pulley or a spacer, I

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Old 11-23-2021, 04:16 PM   #1 (permalink)
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Well, I think I made a pretty stupid mistake. When I was turning the motor over by hand to time it, I didnt use the pulley or a spacer, I just put the bolt directly into the crankshaft. When I went to pull the bolt out after timing it I noticed it was a little tough coming out. And now it wants to bind up going back it after a few turns. I ordered a new bolt, but my fear is that I damaged the threads in the crankshaft. I assume I can chase the threads if that's the case but it's not something I have any experience with. Any suggestions?
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Old 11-23-2021, 04:34 PM   #2 (permalink)
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Well, I think I made a pretty stupid mistake. When I was turning the motor over by hand to time it, I didnt use the pulley or a spacer, I just put the bolt directly into the crankshaft. When I went to pull the bolt out after timing it I noticed it was a little tough coming out. And now it wants to bind up going back it after a few turns. I ordered a new bolt, but my fear is that I damaged the threads in the crankshaft. I assume I can chase the threads if that's the case but it's not something I have any experience with. Any suggestions?
I wonder if the bolt bottomed out in the crankshaft and smashed the first couple of threads on the bolt. Hopefully pulling the bolt out didn't damage the crankshaft threads but I wouldn't think so. Fingers crossed
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Old 11-23-2021, 04:50 PM   #3 (permalink)
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I wonder if the bolt bottomed out in the crankshaft and smashed the first couple of threads on the bolt. Hopefully pulling the bolt out didn't damage the crankshaft threads but I wouldn't think so. Fingers crossed
I'm hoping the same. Measuring everything out it looks like the threads on the bolt stop right about where it would bottom out in the crankshaft.
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Old 11-23-2021, 04:39 PM   #4 (permalink)
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Originally Posted by Rojoryu View Post
Well, I think I made a pretty stupid mistake. When I was turning the motor over by hand to time it, I didnt use the pulley or a spacer, I just put the bolt directly into the crankshaft. When I went to pull the bolt out after timing it I noticed it was a little tough coming out. And now it wants to bind up going back it after a few turns. I ordered a new bolt, but my fear is that I damaged the threads in the crankshaft. I assume I can chase the threads if that's the case but it's not something I have any experience with. Any suggestions?
Once you get the new bolt so you no longer need the old one you can clean the threads up on the old bolt and cut 2-4 slots lengthwise on the old bolt and use it as a thread chaser to clean up the crank.
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Old 11-23-2021, 04:45 PM   #5 (permalink)
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Originally Posted by Rojoryu View Post
Well, I think I made a pretty stupid mistake. When I was turning the motor over by hand to time it, I didnt use the pulley or a spacer, I just put the bolt directly into the crankshaft. When I went to pull the bolt out after timing it I noticed it was a little tough coming out. And now it wants to bind up going back it after a few turns. I ordered a new bolt, but my fear is that I damaged the threads in the crankshaft. I assume I can chase the threads if that's the case but it's not something I have any experience with. Any suggestions?
Been there and done that before a long time ago. Chase it with a bottom tap with the correct thread pitch. Problem solved.
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Old 11-24-2021, 07:04 AM   #6 (permalink)
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Been there and done that before a long time ago. Chase it with a bottom tap with the correct thread pitch. Problem solved.
If I wanted to buy a tap instead of making one, what size and thread pitch would it be? I've searched everywhere, called the dealer, local Indy shop and still no answer. The closest I could find on the internet was m16x1.5 but it was never confirmed.
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