Author Topic: Thermostat option for Stelvio  (Read 613 times)

Offline kgujas

  • New Egg
  • *
  • Posts: 15
  • Location: Belgrade, Serbia
Thermostat option for Stelvio
« on: December 12, 2022, 09:07:30 AM »
Hi ,
after I have read some articles about mounting a thermostat to Moto Guzzi oil cooler, I have a question about thermostat options .

Can I go with Mocal OT/1 thermostat or the bigger Mocal OT/2 thermostat is the right choice ?
This is the manufacturer site and if someone can help me, please do so.
http://www.mocal.co.uk/products-oilstats.html

Thanks.

Offline fotoguzzi

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 19938
  • vee git tooh soon oldt und too late wise -my Dad
Re: Thermostat option for Stelvio
« Reply #1 on: December 12, 2022, 11:10:09 AM »
Why do you need that?
MINNEAPOLIS, MN

Offline GuzziOrDeath

  • Hatchling
  • **
  • Posts: 120
Re: Thermostat option for Stelvio
« Reply #2 on: December 12, 2022, 02:01:45 PM »

If I had to pick a Mocal, I would choose the OT/2. The OT/1 looks too restrictive. You may want to check out the Mishimoto thermostat. It has three different temperature modules.


https://www.mishimoto.com/mishimoto-in-line-thermostat.html

You might want to check with John Warner, who is a member here. He has fitted one to his Stelvio.





Offline Bisbee

  • Hatchling
  • **
  • *
  • *
  • *
  • *
  • Posts: 197
Re: Thermostat option for Stelvio
« Reply #3 on: December 12, 2022, 05:07:26 PM »
Don’t get too worried about your oil temperature. If so , then change the oil twice as often. I doubt that you could ever wear that engine out. High temps, low temps - doesn’t matter. Take reasonable care of it and it will keep on trucking.

94 R100R Mystic , 92 K75S, 98 EV, 17 Stelvio NTX

Wildguzzi.com

Re: Thermostat option for Stelvio
« Reply #3 on: December 12, 2022, 05:07:26 PM »

Offline kgujas

  • New Egg
  • *
  • Posts: 15
  • Location: Belgrade, Serbia
Re: Thermostat option for Stelvio
« Reply #4 on: December 12, 2022, 05:30:07 PM »
Thanks for answers.
@GuzziOrDeath I will check and try to contact John. From your experience, it is ok to go with temp 92C - fully open st 104C?

Offline kgujas

  • New Egg
  • *
  • Posts: 15
  • Location: Belgrade, Serbia
Re: Thermostat option for Stelvio
« Reply #5 on: December 12, 2022, 05:36:23 PM »
With thermostat , as I have read, in cold weather engine will warm up quicker  and it will warm up to working temp, fuel consumption will be reduced, engine parts wear will be reduced… this is how I understand.

Offline HarveyMushman

  • Gosling
  • ***
  • Posts: 349
    • Photo Galleries
  • Location: Virginia, USA
Re: Thermostat option for Stelvio
« Reply #6 on: December 12, 2022, 05:49:48 PM »
Hi ,
after I have read some articles about mounting a thermostat to Moto Guzzi oil cooler, I have a question about thermostat options .

Can I go with Mocal OT/1 thermostat or the bigger Mocal OT/2 thermostat is the right choice ?
This is the manufacturer site and if someone can help me, please do so.
http://www.mocal.co.uk/products-oilstats.html

Thanks.

You'll get more engagement in the Stelvio thread at advrider.  One frequent poster equipped his Stelvio with a thermostat; I suggest searching for his posts or reaching out to him directly.  https://www.advrider.com/f/threads/moto-guzzi-stelvio-merged-threadfest.113158/page-2585#post-42470100
Tim

Offline GuzziOrDeath

  • Hatchling
  • **
  • Posts: 120
Re: Thermostat option for Stelvio
« Reply #7 on: December 13, 2022, 02:30:04 AM »
Thanks for answers.
@GuzziOrDeath I will check and try to contact John. From your experience, it is ok to go with temp 92C - fully open st 104C?


That's a good option. The thermostat on my Griso opens at 100C.





Offline John Warner

  • Gosling
  • ***
  • *
  • Posts: 265
  • Growing old is mandatory, growing up is not . . .
    • Stelvio/V85 Owners Group FB
  • Location: South Bucks, UK
Thermostat option for Stelvio
« Reply #8 on: December 13, 2022, 04:36:59 AM »
I think the Thermostats that start to open at around 104°C are the highest rated ones available.
Mine's a Moshimoto item, starts to open at 103°.

All the 1200 8V Engines are very over-cooled, and any Air-Cooled Engine with an Oil Cooler should really have a Thermostat fitted in the Cooling Oil Circuit.
Can you imagine the outcry if a manufacturer released a car without a Thermostat in the Cooling System!!

In cooler Weather/Climates, the Oil probably won't reach a decent temp in normal use.
Synthetic Oil works best at around 110-120°C

In Ambient temps around 14°C (57°F) or lower, the Oil won't get much above 70-75°C (158-167°F), which isn't good for the Engine or the Oil, you'll get emulsification of the Oil, which can lead to internal corrosion.

It's worse on the later (post-2011) Stelvios, with the larger Cooler.
It's worth fitting an Oil Temp Gauge to keep an eye on temps, especially in cooler weather.


I made my own Thermostat Housing, just used the Moshimoto Waxstat, it's the same part used in off-the-shelf Thermostat Units.






Machining my own Housing meant I could reuse the original Cooler Hoses, and the Unions, they're not standard Hose Fitting items.





Using an off-the-shelf Unit, you'll need a few more Fittings, and possibly some Hoses.

Have a read through Mark (Beetle) Bayley's write up of fitting a Thermostat to his Griso 1400.
https://www.grisoghetto.com/t4478-8v-overcooling-project
Doc out . . .
Stelvio Owners Group on FB ~ https://www.facebook.com/groups/888995181188209/?fref=nf

Offline kgujas

  • New Egg
  • *
  • Posts: 15
  • Location: Belgrade, Serbia
Re: Thermostat option for Stelvio
« Reply #9 on: December 13, 2022, 05:29:48 AM »
Thanks John for your explanation.
I will definitely put one to my bike just after I found out what options of thermostat I can get.

 

***Wildguzzi Official Logo High Quality 5 Color Window Decals Back In Stock***
Shipping in USA Only. Awesome quality. Back by popular demand. All proceeds go back into the forum.
Best quality vinyl available today. Easy application.
Advertise Here