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Author Topic: Loss of Compression with lots of Noise  (Read 7421 times)

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ltank

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    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
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Loss of Compression with lots of Noise
« on: November 23, 2019, 12:57:43 AM »
My S&S V124 started running on the rear cylinder.
Front cylinder has no compression and made lots of noise when Riding. Used Borescope to take pics while waiting for local shop to make room for me.
I don't know if it's from bad crankshaft or failed piston oil. Plug looked good cylinder wall looks FD up. I hope to get bike in shop bt Thanksgiving. It's gonna be expensive. No metal in oil/filter
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ltank

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    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
    • CVO3: 1989 FXRS, 1990 Custom 100" Shovelhead/ EVO
Re: Loss of Compression with lots of Noise
« Reply #1 on: December 06, 2019, 05:22:29 PM »
Well, I finally got to the culprit of No Compression on the front Cylinder. Fueling Endurance Beehive Exhaust Valve  broke with just over 3k miles. Never Again will I use a Beehive Spring. Going with Kibblewhite 650 Dual Valve Springs. It bent the front Pushrod. Will replace lifter as a precautionary. Piston and Cylinder are Good.
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Twolanerider

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Re: Loss of Compression with lots of Noise
« Reply #2 on: December 06, 2019, 06:30:12 PM »
Strictly in the FWIW department beehives have always given me the willies compared to anything that has some redundancy built in to it.
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