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Author Topic: 294 F  (Read 964 times)

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jimp

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294 F
« on: October 09, 2011, 09:00:42 AM »
Friend calls last night, said his oil got up to 294F while in line at BMP yesterday. He also told me it started knocking, poor old 103 is probably done.

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Ironhorse

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Re: 294 F
« Reply #1 on: October 09, 2011, 10:56:08 AM »
There's got to be more to it than that. Just because a bike runs hot does not mean it's done.
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"But men are men, the best sometimes forget" Shakespeare, Othello Act 2, Scene 3

tomjetty

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Re: 294 F
« Reply #2 on: October 09, 2011, 11:16:39 AM »
My 2009 SERG ran so hot at times (>95 deg stop & go traffic) that the top end sounded like it was not getting oil. A set of Fulsac pipes. 2" Mufflers and a download provided by Fulsac brought the temps down nicely.   :2vrolijk_21:for Fulsac.
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HD Street Performance

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Re: 294 F
« Reply #3 on: October 09, 2011, 11:33:44 AM »
Ask Mr Fullsack, Steve George, about "normal" oil temperatures with high ambient or low airflow situations, or both. His bike has all those fixes and it runs stinking hot as they will when there isn't enough BTU rejection.
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cahdbiker

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Re: 294 F
« Reply #4 on: October 09, 2011, 03:34:17 PM »
jimp, last august around the 26th or 27th, I was on my way home from Canada. When I got to St George mid afternoon (stupid time to be in St George in August) It was well over 110 degrees and we still had to make Vegas. I have no oil temp guage so I don't know what my oil temp was, but my bike ran the same as it did when the weather was cooler. It did not ping even on the hottest days  and of course It still has the irritating valve train noise between 2200-2800 RPM which was a constant during my entire 3500 mile trip. This was 2 up with lots of luggage. Finally got to Las Vegas at
dusk(took a 2 hour break inside Del Taco food stop while at St. George) and outside temp was 107. I have a fulsac stage one upgrade. Last trip to Wyoming before Fulsac my bike pinged incessantly as soon as I got out of California. Sorry to ramble on , but I was wondering how hot it was outside when your friends bike started knocking? CAHDBIKER P.S. when  I had a knocking problem on my other bike with S&S 107 even though it sounded like valve train noise it was severe piston slap at  only 2k miles. S&S couldn't get it right so I had to have a local S&S certified mechanic do the cylinders and pistons. Now it is quiet. Much more quiet than my 110. Sorry to get off subject, but valve train noise can easily be mistaken for piston slap.IMHO
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2009 SEUC just south of Point Mugu Ventura County, Ca.

jimp

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Re: 294 F
« Reply #5 on: October 09, 2011, 04:01:15 PM »
CA, I know is he said it was warm yesterday in Alabama, so I would assume it was in the Eighties.
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HD Street Performance

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Re: 294 F
« Reply #6 on: October 09, 2011, 06:12:23 PM »
Sorry to get off subject, but valve train noise can easily be mistaken for piston slap.IMHO

But the hotter the motor gets the more the pistons expand (2x higher coefficient of expansion VS the liners), piston slap goes down until worse case you seize. The hotter oil = lower viscosity = lifter bleed is more than likely the cause of noise. The hotter oil is also a bigger pool for entrained air, more valve train noise.

Just because the oil is super hot does not necessarily mean the cylinder head is overheated, BTW but if you are running conventional oil at those temperatures the lifespan of the oil is considerably less than a synthetic and to protect the motor properly frequent oil changes would be required. This can be verified by oil sampling.
Steve George has reported his own personal motorcycle runs 300°F + in Lake Havasu City, the oven capital of the US
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HOGMIKE

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Re: 294 F
« Reply #7 on: October 09, 2011, 07:31:57 PM »
Quote from: Deweysheads on October 09, 2011, 06:12:23 PM
Sorry to get off subject, but valve train noise can easily be mistaken for piston slap.IMHO

But the hotter the motor gets the more the pistons expand (2x higher coefficient of expansion VS the liners), piston slap goes down until worse case you seize. The hotter oil = lower viscosity = lifter bleed is more than likely the cause of noise. The hotter oil is also a bigger pool for entrained air, more valve train noise.

Just because the oil is super hot does not necessarily mean the cylinder head is overheated, BTW but if you are running conventional oil at those temperatures the lifespan of the oil is considerably less than a synthetic and to protect the motor properly frequent oil changes would be required. This can be verified by oil sampling.
Steve George has reported his own personal motorcycle runs 300°F + in Lake Havasu City, the oven capital of the US

Yeah, but, it's that famous "dry heat"! So it doesn't feel as hot!! LOL
 8)
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HOGMIKE
 

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