Loud tappet tick on ACE 1100 suspect clogged oil passage? - Page 2 - Honda Shadow Forums : Shadow Motorcycle Forum
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post #11 of 19 (permalink) Old 09-07-2016, 12:49 PM
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Another thing I found was an oil supply bolt to the heads called an oil orifice bolt that has a banjo fitting and supplies the upper areas. I was going to take it out to see if it could be clogged but decided if it was plugging up, there would be much more clatter and oil starvation than one tick that I have. Just some info. since it could be an area that would slow down the flow to the heads.

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post #12 of 19 (permalink) Old 09-07-2016, 12:56 PM
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I have to retract that last statement about the oil orifice bolt. I just looked at it better, and it actually feeds the trans and clutch areas. So it shouldn't have an effect of oil pressure to the heads.


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1983 750 Shadow
From the past=
1951 Cushman scooter
1962 Honda 305 Dream
1965 Honda 305 Dream
1971 Honda 175 scrambler
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post #13 of 19 (permalink) Old 09-11-2016, 12:34 PM Thread Starter
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Anyone know the thread size of the oil pressure switch? I would like to hook up a gauge, is this standardized?

I put in 3 ounces of SeaFoam and the tick went away, temporarily. I will put another 100 miles on it before I draw any conclusion from the cheapo-fix.


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post #14 of 19 (permalink) Old 09-12-2016, 12:29 AM
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If the tick went away, change the oil now and see what happens. I wouldn't leave the Seafoam in much longer than necessary but thats me.




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post #15 of 19 (permalink) Old 09-12-2016, 12:37 AM
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The oil pressure threads on USA fittings are an 1/8 pipe thread. On metric engines they are a 1/8 British pipe thread that is very close but not exact. A US 1/8 pipe will screw in a few threads and most of the time would be good enough for testing purposes and not ruin the Metric threads. Put some teflon tape on to help seal.

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1962 Honda 305 Dream
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post #16 of 19 (permalink) Old 09-14-2016, 01:41 PM Thread Starter
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Quote:
Originally Posted by swifty2014 View Post
The oil pressure threads on USA fittings are an 1/8 pipe thread. On metric engines they are a 1/8 British pipe thread that is very close but not exact. A US 1/8 pipe will screw in a few threads and most of the time would be good enough for testing purposes and not ruin the Metric threads. Put some teflon tape on to help seal.
Thank you swifty that is exactly what I need to know.
The plan is to run one tank or 150 miles on seafoam plus a few ounces of marvel mystery oil as the tick has subsided, will follow up with fresh Castrol GTX 10W40.


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post #17 of 19 (permalink) Old 10-07-2016, 10:52 PM Thread Starter
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A follow up on this thread to say the seafoam seems to have worked. Ran 130 miles and then changed to fresh 10W40; no more noise from the lifters.


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post #18 of 19 (permalink) Old 10-08-2016, 07:44 AM
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Gotta love it when the "mechanic-in-a-bottle" fixes the problem!
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post #19 of 19 (permalink) Old 10-08-2016, 09:14 AM
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Gotta love it when the "mechanic-in-a-bottle" fixes the problem!


Simply love that stuff!
Works overnite, one application, when B12 or Seafoam would take a week.



Tractor Supply usually has it; sometimes Home Depot.
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