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BMW S1000XR
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Too hot under the collar?
28 Feb 21, 04:12 AM
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Topic: Too hot under the collar? (Read 3804 times)
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FZZup
XR Member
Topic Author
Posts: 39
Bike: S1000XR
Town: Dorchester
Country:
Too hot under the collar?
on:
February 17, 2018, 11:39:52 PM
So bike had first year service and dealer mentioned about bike running a bit hot and they cleared radiator fins? This got me a bit confused as I had thought prior to the service I rarely saw temps above 100degC. After the service I saw temp quickly rising to 105 degC in traffic, at which point fan kicked in. Popped back to dealer and asked if anything had changed in regards to bike set up / ecu etc. Apparently not so. Was shown workshop manual spec for fan indicating on at 105degC off at 95degC so left reassured all was within spec, but still a bit confused as the post service temperature behaviour seemed quite different to pre service behaviour. Anyone experienced this?
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#1
Bree
XR God
Posts: 2151
Bike: S1000XR
Country:
Re: Too hot under the collar?
Reply #1 on:
February 18, 2018, 09:07:05 AM
Was a change of cooling fluid part of this service ? .
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Everything Will Be Alright In The End, If Not Then Its Not The End.
#2
FZZup
XR Member
Topic Author
Posts: 39
Bike: S1000XR
Town: Dorchester
Country:
Re: Too hot under the collar?
Reply #2 on:
February 18, 2018, 11:02:00 AM
Nope, coolant check is all at first service, hence my confusion. Dealer also confirmed no change to cooling system. Watched bike get up to 105deg in the shop and fan kicked in as per spec. Just don’t recall it getting that high previously. Perhaps I’ve got early onset dementia
but would be interested in others experience of post/pre 2017 1000xr temp behaviour.
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#3
Winger
XR God
Posts: 2879
Town: Birmingham
Country:
Re: Too hot under the collar?
Reply #3 on:
February 18, 2018, 05:50:53 PM
Oh blimey these things do run hot I only have to pull up and within seconds it’s showing 100c
Go on the other channel guys in the US where moaning about such in 15 hence why a lot of them went to the Akra to dispel the heater better underneath the motor.
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#4
Mareng1
XR God
Posts: 1064
Bike: S1000XR
Town: Scotland
Country:
Re: Too hot under the collar?
Reply #4 on:
February 18, 2018, 07:58:16 PM
It certainly gets hot quickly, but I sense the actual volume in the cooling circuit is a lot smaller than a lot of bikes.
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#5
SimonUK
XR Master
Posts: 721
Bike: S1000XR,S1000R
Town: Upstate, SC
Country:
Re: Too hot under the collar?
Reply #5 on:
February 19, 2018, 01:23:17 AM
Whilst I agree our 'S' bikes (RR,R & XR) do get hot pretty quickly, when running both my R and XR run at between 165f and 185f depending on the ambient temp. My Golf GTi on the other hand seems to run at 216f permanently.
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#6
Toolman_57
XR Member
Posts: 39
Bike: 2016 S1000XR
Town: Wash DC USA Area
Country:
Re: Too hot under the collar?
Reply #6 on:
February 19, 2018, 03:11:34 AM
I've been riding in 30-40 deg. F weather lately and have observed cool engine temperatures (155-170 deg. F). Seems pretty strange to me since most auto engine thermostats are set between 180 and 190 deg F. I read on another forum posting that the S1000 thermostats are set to open between 70-80c (158-176 deg F).
I guess this makes sense from a temperature reading perspective, but it seems like a very low thermotat setting.
I also found another thread source that says that the fan kicks in at 105c (221 deg f). That would mean a possible operating range between 158 and 221 deg F. I can say that I've observed this range so far in riding.
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#7
SimonUK
XR Master
Posts: 721
Bike: S1000XR,S1000R
Town: Upstate, SC
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Re: Too hot under the collar?
Reply #7 on:
February 19, 2018, 04:00:26 AM
I think my fan comes on at 212-214 and goes off at around 205
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#8
Snatch
XR Pro
Posts: 400
Bike: 2016 S1000XR whi
Town: NY Metro
Country:
Re: Too hot under the collar?
Reply #8 on:
February 19, 2018, 06:44:51 AM
Originally Posted by
SimonUK
I think my fan comes on at 212-214 and goes off at around 205
same here
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#9
Salem
XR Pro
Posts: 204
Bike: S1000XR
Country:
Re: Too hot under the collar?
Reply #9 on:
February 19, 2018, 09:06:56 AM
technology has moved on
...older cars and bikes have engine out thermostats. These (try) to regulate the highest temp in the coolant circuit. The XR and many others have more modern engine inlet thermostats. These try to regulate the lowest temperature in the system. These ensure the engine gets a constant inlet temperature and avoid cold shocks. When an engine out thermostat opens it dumps hot water in the top of the radiator, and under circumstances that can lead to too cold water coming out of the bottom of the radiator and into the engine
But with the new thermostats you will see a changing high temperature in the system, depending on load. Low load, low temp. High load, high temp.
Last Edit: February 19, 2018, 09:09:05 AM by Salem
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