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-   -   Black Scorpion/Thunderbolt Cap and Rotor Help (http://www.wakeworld.com/forum/showthread.php?t=809509)

h2ohangtime 11-01-2020 5:21 AM

Black Scorpion/Thunderbolt Cap and Rotor Help
 
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Doing end of year maintenance and Iím trying to get the rotor off the distributor shaft. I admit ignorance, but I was under the impression that the rotor just pulled up off the shaft without any fastener removal. This rotor was in need of a change as it was brittle and broke right off. Is there something Iím missing or is it possibly corroded to the shaft?

GSXRcrasher 11-02-2020 5:05 AM

I am pretty sure it is supposed to just pull off. Probably stuck on extra hard from corrosion. I would put a piece of scrap wood across the base to protect it and use a pry bar pushing up right next to the shaft.

denverd1 11-02-2020 8:19 AM

makes you wonder how the corrosion got in there to start with. doesn't take much moisture to cause issues. Id replace the dizz, they're not much. Not sure if you're comfortable setting timing, not difficult. Although you're not going to be able to tell where current timing is set so get your hands on a manual for that motor.

h2ohangtime 11-02-2020 8:37 AM

Quote:

Originally Posted by denverd1 (Post 2003691)
makes you wonder how the corrosion got in there to start with. doesn't take much moisture to cause issues. Id replace the dizz, they're not much. Not sure if you're comfortable setting timing, not difficult. Although you're not going to be able to tell where current timing is set so get your hands on a manual for that motor.

Nacho, youíre probably right. I tried to get in there with a pry bar and only succeeded in chipping more plastic off the rotor. Iím 99.9% certain this is the first time itís been changed and I know the previous owner didnít treat the boat very wellóto the point of putting it away without taking out the plug, which is likely whatís caused the corrosion to build up over time. The only other thing I can think of is to get a heat gun on it to try and get the plastic to soften and expand a bit, but I wonder if thatís more risk than necessary. Iíve never replaced a distributor so it might be a bit of a stretch for me to do it, but Iím not opposed to taking it in either.

denverd1 11-03-2020 3:18 AM

Quote:

Originally Posted by h2ohangtime (Post 2003693)
Nacho, youíre probably right. I tried to get in there with a pry bar and only succeeded in chipping more plastic off the rotor. Iím 99.9% certain this is the first time itís been changed and I know the previous owner didnít treat the boat very wellóto the point of putting it away without taking out the plug, which is likely whatís caused the corrosion to build up over time. The only other thing I can think of is to get a heat gun on it to try and get the plastic to soften and expand a bit, but I wonder if thatís more risk than necessary. Iíve never replaced a distributor so it might be a bit of a stretch for me to do it, but Iím not opposed to taking it in either.

just take it in. won't be expensive. Heat may work, likely to end up with a mess and will be replacing dizz anyway.

what year?

h2ohangtime 11-03-2020 5:38 AM

So I was able to get it off after borrowing my neighbor's oscillating multi-tool with a serrated blade. I essentially had to chip it out into about 10 different pieces before I could peel the remainder of the rotor off the shaft. Hard to tell if it was heat, corrosion, or lack of maintenance from the previous owner that did it, but I'm going to guess all three played a part. I started it up this morning and it ran fine, so I'm going to call this done.

Thanks for the help!

denverd1 11-03-2020 6:44 AM

cool!


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