Twin Cam Motors Twin Cam 1998 thru 2017

Stock 96 - Rockerbox Gaskets - What else?

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Old Mar 16, 2026 | 06:52 PM
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Default Stock 96 - Rockerbox Gaskets - What else?

I have a stock 96 in an 07 Softail Standard FXST with about 36K miles. The rockerboxes are leaking both the front and rear. I picked up a James kit for the rockerboxes, just wondering if I should do anything else while I am in there. DK Rocker Lockers are something I keep coming across that seem to be worthwhile.




 
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Old Mar 16, 2026 | 07:28 PM
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Rocker Lockers are a worthwhile investment particularly if you are getting a lot of clatter coming from the rocker boxes. Check out the website and get informed before deciding you need them, while they are not expensive and easy to install, if you don't need them. James gaskets have a sketchy reputation; many here won't use them. I would suggest keeping an eye on that area after the install. Cometic gaskets are pretty commonly used by many here but I started using Cyco (US Steel) gaskets years ago to save money; quality material.
 
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Old Mar 17, 2026 | 09:13 AM
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I would not use the James kit.. I'd use either HD or cometic. When installing add a real thin coat of permatex ultra black along the outside edge of the breather passage on the gasket..
 
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Old Mar 17, 2026 | 10:05 AM
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+1 on Cometic.

John
 
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Old Mar 19, 2026 | 09:06 PM
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Can't go wrong with OEM either..
 
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Old Mar 19, 2026 | 09:22 PM
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Drill out the drainage holes. Replace the breathers.
 
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Old Today | 08:59 AM
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Thats too bad about the bad reputation for James Gaskets. I already had them ordered when I made this post. Ill run them and and stick with cometic going forward.

I drilled out the drain holes for the breathers to 1/8 in




Going through some cleanup of the heads and jugs from the oil leaks.

I guess i never got down low enough to see the bottom fins of the jugs. Since getting a lift and having the bike up higher i was able to see this mess. It also shows me i dont wash the bike well enough since theyve made it through many washes.



Polishing up the rocker covers, they have a little pitting, mainly heavy oxidation. Picking up some aluminum polish to finish them.



Cleaned up the pushrod covers, ran them through the ultrasonic cleaner with some simple green and hit them with the 0000 wool.




 
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