Shutting down a hot engine

Gunzer · 07-24-2008, 07:32 PM

I have an '06 that I am just getting acquainted with. After just tooling around my home the operating temp stays between 200 and 220. Do you folks let the engine idle a while to let the temp drop a bit or do you just shut it down?

Thanks,

Gunzer

mello dude · 07-24-2008, 07:38 PM

Quote:

Originally Posted by Gunzer

I have an '06 that I am just getting acquainted with. After just tooling around my home the operating temp stays between 200 and 220. Do you folks let the engine idle a while to let the temp drop a bit or do you just shut it down?

Thanks,

Gunzer

At those temps you have nothing to worry about. Shut it down at will.

MD

eddievalleytrailer · 07-24-2008, 08:09 PM

Shut it down. It will only get hotter at idle, unless you've been running the pi$$ out of it.

Gunzer · 07-24-2008, 09:31 PM

Roger that, thanks.

stewartj239 · 07-25-2008, 06:44 PM

Gunzer - if the fan is on, then I will turn off the motor, but leave the ignition on so that the fan can run until it cools the engine down enough until it turns off. If the fan isn't on when you stop the engine, then you don't need to worry about it.

drewl · 07-25-2008, 10:14 PM

shut it down. I had it up to 252 and I did not wait around for it to come down, I shut it off at the first opportunity.

Gunzer · 07-26-2008, 11:16 AM

Thanks for the replys.

He Stew, any concern for draining the battery if you decide to let the fan run till it stops?

I am under the impression motorcycle batteries don't need an excuse to die early. Thoughts?

Gunzer

drewl · 07-26-2008, 11:36 AM

Also, the load of the fan is one of the heavier loads for the whole system.
If you are gonna let it sit for a while, just let it cool down naturally.

stewartj239 · 07-26-2008, 07:31 PM

Quote:

Originally Posted by Gunzer

Thanks for the replys.

He Stew, any concern for draining the battery if you decide to let the fan run till it stops?

I am under the impression motorcycle batteries don't need an excuse to die early. Thoughts?

Gunzer

I've never had a problem doing this on any of my bikes. Typically, the fan never runs for more than 30 - 60 seconds after killing the engine, so it is not a prolonged period of time. It probably isn't necessary, but I prefer to get the motor back into normal temperature range (pre-fan) before letting it sit.

powerslave · 07-26-2008, 07:34 PM

Just wonderin'
Is there any point in letting the fan run since the water pump is not running???
I just shut mine off right away.

alter ego · 07-26-2008, 08:07 PM

I let my fan run for the 30 sec or so like stewartj239 does and I don't think it hurts anything. It just makes me feel better getting some of that heat out.

eddie cap · 07-26-2008, 10:30 PM

Howdy Guys; I believe its best to just shut it off, if they all have the same chacteristics
as my Y2K, it will only get hotter if you let it sit and idle. As far as letting
the fan run after shutting off the engine, all you are doing is cooling
the fluid in the radiator,you are not cooling the engines temperature
at all. eddie

Ignorant Bystander · 07-29-2008, 08:37 AM

Quote:

Originally Posted by eddie cap

Howdy Guys; I believe its best to just shut it off, if they all have the same chacteristics as my Y2K, it will only get hotter if you let it sit and idle. As far as letting the fan run after shutting off the engine, all you are doing is cooling the fluid in the radiator,you are not cooling the engines temperature at all. eddie

Roger on that one. My temp went way up into the RED zone the other day (fan was not running - don't get it). I stopped, turned the ignition off then on again and the fan came on. Temp did not go down until I restarted the engine.

In this case, I did let the fan cool the radiator only for a while, and when the water pump started circulating the fluid, the temp dropped by 35-40 degrees almost instantly.

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07-24-2008, 07:32 PM	#1 (permalink)
Gunzer Member Join Date: Jun 2008 Last Online: 01-06-2009 06:30 PM Location: Western NC My Ride: '06 Pearl White VFR Posts: 39 Thanks: 2 Thanked 0 Times in 0 Posts	Shutting down a hot engine I have an '06 that I am just getting acquainted with. After just tooling around my home the operating temp stays between 200 and 220. Do you folks let the engine idle a while to let the temp drop a bit or do you just shut it down? Thanks, Gunzer __________________ Do unto others as you would have them do unto you!

07-24-2008, 08:09 PM	#3 (permalink)
eddievalleytrailer Uber Guru Join Date: May 2007 Last Online: 01-07-2009 06:57 AM Location: Jonesborough, TN - Find Me! My Ride: 82 V-45 Sabre 83 VF750F Interceptor 91 XR250L 03 Shadow ACE 07 RWB Interceptor View my Photo Gallery Posts: 1,286 Thanks: 52 Thanked 52 Times in 33 Posts	Shut it down. It will only get hotter at idle, unless you've been running the pi$$ out of it. __________________ Proud Member Sixth Gen Militia-1st VTEC Battalion

07-24-2008, 09:31 PM	#4 (permalink)
Gunzer Member Join Date: Jun 2008 Last Online: 01-06-2009 06:30 PM Location: Western NC My Ride: '06 Pearl White VFR Posts: 39 Thanks: 2 Thanked 0 Times in 0 Posts	Roger that, thanks. __________________ Do unto others as you would have them do unto you!

07-25-2008, 06:44 PM	#5 (permalink)
stewartj239 Senior Member Join Date: Oct 2006 Last Online: Yesterday 06:57 PM Location: Syracuse, NY My Ride: 1986 Honda VF500F, 1986 Honda VFR750F, 1986 Honda VF1000R, 2007 Honda VFR800FI (RWB) View my Photo Gallery Posts: 625 Thanks: 1 Thanked 21 Times in 21 Posts	Gunzer - if the fan is on, then I will turn off the motor, but leave the ignition on so that the fan can run until it cools the engine down enough until it turns off. If the fan isn't on when you stop the engine, then you don't need to worry about it. __________________ Proud Owner - 1st Gen Interceptor (1986 VF500F) Proud Owner - 2nd Gen Interceptor (1986 VFR750F & 1986 VF1000R) Proud Owner - 6th Gen Interceptor (2007 VFR800FI - RWB) (Proud Member - 6th Gen Militia - 1st VTEC Battalion)

07-25-2008, 10:14 PM	#6 (permalink)
drewl Philosphical Adviser Join Date: Nov 2007 Last Online: Today 01:50 AM Location: Susanville, Ca - Find Me! My Ride: 2000 VFR 800 fi View my Photo Gallery Posts: 2,485 Thanks: 44 Thanked 94 Times in 69 Posts	shut it down. I had it up to 252 and I did not wait around for it to come down, I shut it off at the first opportunity. __________________ Shop Steward:Chat Hooers Union, Local 151

07-26-2008, 11:16 AM	#7 (permalink)
Gunzer Member Join Date: Jun 2008 Last Online: 01-06-2009 06:30 PM Location: Western NC My Ride: '06 Pearl White VFR Posts: 39 Thanks: 2 Thanked 0 Times in 0 Posts	Thanks for the replys. He Stew, any concern for draining the battery if you decide to let the fan run till it stops? I am under the impression motorcycle batteries don't need an excuse to die early. Thoughts? Gunzer __________________ Do unto others as you would have them do unto you!

07-26-2008, 11:36 AM	#8 (permalink)
drewl Philosphical Adviser Join Date: Nov 2007 Last Online: Today 01:50 AM Location: Susanville, Ca - Find Me! My Ride: 2000 VFR 800 fi View my Photo Gallery Posts: 2,485 Thanks: 44 Thanked 94 Times in 69 Posts	Also, the load of the fan is one of the heavier loads for the whole system. If you are gonna let it sit for a while, just let it cool down naturally. __________________ Shop Steward:Chat Hooers Union, Local 151

07-26-2008, 07:34 PM	#10 (permalink)
powerslave Senior Member Join Date: Nov 2007 Last Online: Today 11:30 AM Location: winnipeg,manitoba. - Find Me! My Ride: 2002 vfr 800 View my Photo Gallery Posts: 306 Thanks: 10 Thanked 8 Times in 8 Posts	Just wonderin' Is there any point in letting the fan run since the water pump is not running??? I just shut mine off right away.

07-26-2008, 08:07 PM	#11 (permalink)
alter ego Senior Member Join Date: Oct 2006 Last Online: 10-02-2008 05:12 PM Location: Rhode Island - Find Me! My Ride: 2008 DUCATI 1098 View my Photo Gallery Posts: 259 Thanks: 0 Thanked 2 Times in 2 Posts	I let my fan run for the 30 sec or so like stewartj239 does and I don't think it hurts anything. It just makes me feel better getting some of that heat out. __________________ Proud member-6th Gen Militia-1st VTECH Battalion

07-26-2008, 10:30 PM	#12 (permalink)
eddie cap Senior Member Join Date: Jan 2007 Last Online: Yesterday 07:07 PM Location: Valley Forge, Pa My Ride: 2003 Harley Road King, 2000 VFR 800 Posts: 292 Thanks: 0 Thanked 1 Time in 1 Post	Howdy Guys; I believe its best to just shut it off, if they all have the same chacteristics as my Y2K, it will only get hotter if you let it sit and idle. As far as letting the fan run after shutting off the engine, all you are doing is cooling the fluid in the radiator,you are not cooling the engines temperature at all. eddie

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