OIL BYPASS VALVE FOR STELVIO

[Spuddy]

I received the following response from JAG.COM.

Thanks for your kind consideration. As with all wax-motor actuators, ours is set to a prescribed temperature range. It is not adjustable but it monitors itself over a temperature range. It begins to stroke toward closed as the wax inside the actuator expands and it is fully stroked and the by-pass is closed at the top of that range. The wax prescription range in this actuator is optimal for engine oil cooling (180 begin - 200 fully stroked).

It is no more difficult to change your oil with our 4050 by-pass installed than without it. During oil change you should not bother the 4050.

Should I be apprehensive with "wax" operated valving?

[lschultz]

I do agree I think these oil coolers need a bypass on them for the winter months. It's hard for me to believe they install them with out one. I have had a few Jag oil coolers in the past with bypass valves and never had any problems on the Harleys I have had. Hmmm I need to look at the Indian and see if it has a bypass. I would say Jag knows what they are talking about.

[Vasco DG]

The vast majority of thermostats are waxstats.

Pete

[Vasco DG]

Mark, (Beetle.) has just ordered us a couple of these..

http://www.improvedracing.com/oil-thermostats/high-flow-high-temp-engine-oil-cooler-thermostat-215f-p-434.html

Which I'm going to fit one of to my Griso and make up a kit for his. Winter is just around the corner for us and although I've not had an issue and we both have roller kits to hand if needed I'm keen to get an 'Automatic' cure for the over cooling issue. A baffle works well but it does require attention and, well, I'm lazy... ;D

Pete

[Ad B]

Hi,

Why aren't they making oil coolers with build in a by pass/thermostat??
Or is some company doing this??

Ad B

[Vasco DG]

Probably because either factories fit them internally as standard or they aren't necessary. As far as I know there are few if any motors currently that use a twin vane oil pump with one side dedicated to cooling. I may be wrong about that, I don't know? It may well be that over-cooling was never considered as being an issue, it wouldn't be when the motor was on a test bench in a lab during prototyping.

Anyway, the question is essentially irrelevant. If you're going to add a thermostat adding one suplemantary to the cooler is going to be easier and cheaper than a new cooler with a bypass installed. With your set up it will be seriously simple as the 'stat can be put pretty much anywhere convenient. For those of us who like the unconventional location of the cooler on Grisos it will be a bit more fiddly but scarcely a ball-breaker, at least I hope not!

Pete

[rocker59]

Wouldn't a cover for the oil cooler during winter months be the Guzzi way?  It's cheap, easy, and doesn't alter the bike.

[Spuddy]

Wouldn't a cover for the oil cooler during winter months be the Guzzi way?  It's cheap, easy, and doesn't alter the bike.

I don't think winter is the issue. (However blocking the radiator fins doesn't indicate oil temp at the cooler.)  I think it is the cool spring and fall temperatures 9and perhaps summer mornings and nights) that inhibit the engine from reaching optimal operating temperature.

Spuddy

[Vasco DG]

Wouldn't a cover for the oil cooler during winter months be the Guzzi way?  It's cheap, easy, and doesn't alter the bike.

I've already gone that route Mike mad it works well enough but it requires monitoring and adjusting. A 'stat is essentially 'Fit and Forget'.

Pete

[Chuck in Indiana]

The engine warms up quicker, too.

[Mayor_of_BBQ]

Wouldn't a cover for the oil cooler during winter months be the Guzzi way?  It's cheap, easy, and doesn't alter the bike.

Also gotta remember Spuddy lives somewhere you can depart in 85 degree sun and see 40 degrees & snow flurries during the course of a ride


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[Spuddy]

Also gotta remember Spuddy lives somewhere you can depart in 85 degree sun and see 40 degrees & snow flurries during the course of a ride

SO, when are you gunna get here Mayor?

Spuddy

[Mayor_of_BBQ]

SO, when are you gunna get here Mayor?

Spuddy

Well I was planning to post in your Montana thread..  But things have been *complicated*

I think I arrived in Helena on Feb 12 or so.. Never even got unpacked, just spent a few weeks struggling with the ex.. I loaded my crap back up and moved back to Asheville! Just got in last night. I made it as a Helena resident for aprox 6weeks!

(Yes I know this is insane behavior)


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[Spuddy]

I made it as a Helena resident for aprox 6weeks!  (Yes I know this is insane behavior)

Hey, we're all insane or 'ranch' out here.  Just send me BBQ - nothing good here. Eating in Montana: mediocre food and too much of it...

Spuddy

[Mayor_of_BBQ]

Hey, we're all insane or 'ranch' out here.  Just send me BBQ - nothing good here. Eating in Montana: mediocre food and too much of it...

Spuddy

In my opinion Suds Hut is the best overall place in town. Great burgers and fried chicken with very good ribs & fish+chips. The sides are weak (iceberg salads, canned baked beans) and the BBQ sauce they use is straight Sysco bottle crap (how hard is it to make bbq sauce, seriously). But overall the only place in town that gave me the 'hey, I dig this joint' vibe.

God help you if you enjoy ethnic cuisine. That Jade Garden commercial always cracked me up "your best choice in Helena for Chinese cuisine" lol they don't claim it's good or fresh or authentic.. Their selling point is 'it's your best choice in town'.

I did like Cielo's food but restaurants serving 'dine in' food in styrofoam with single use plastic ware is like the #1 pet peeve that sends me thru the roof, so I wouldn't patronize them regularly. Karmadillos was almost as good and has a nice patio area.

As for BBQ check Facebook for Bad Betty's BBQ looks like they are kick starting a location.. Their stuff looks good. I went to one of their events and the pork was tasty.. They had run out of literally everything else but they still had a little pork...
That rib trailer food truck gets a thumbs down. But the Great Northern Pasty trailer was really good.. (Also staffed by very friendly chatty college gals)

Benny's Bistro is solid but pricey for what you get.
On Broadway made my so angry I was ready to fight by the time I left.. HATED IT

Can you tell I checked out every place in town lol?


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[ohiorider]

I've already gone that route Mike mad it works well enough but it requires monitoring and adjusting. A 'stat is essentially 'Fit and Forget'.

Pete

Is there some chance that you, Beetle, or another savvy forum member will be able to provide a diagram of how to plumb a bypass into our Grisos?  I've never had the cover over the cooler removed, so I'm not certain what amount of space may be available there for the bypass.  I have looked over the parts list drawing of the cooler and associated hoses, so logically, the bypass would be simple to install.  However, physically,  where would one locate the bypass, and what hoses and connectors would be required to cleanly integrate it into the Guzzi oil cooling system?

Any thoughts along these lines would be appreciated.

Bob

[Vasco DG]

Bob, when the 'Stats arrive and I have some time, (It's coming up to my quiet time of year so it shouldn't be far away.) I'll work out the where and the how and what to buy to get it to fit.

I'm thinking that probably I'll be able to fit the stat inside the cooler housing and mount it to the sump spacer by drilling and tapping a couple of holes in the spacer. The spacer is 20-25mm thick so 10mm bolts won't be a problem. The it's simply a matter of working out hose lengths and the fittings needed to plumb it all in unobtrusively and effectively. I think the biggest issue will be accomodating the tight bends needed behind the cooler to plumb the hoses up.

I would probably offer a kit but every time I do something like this and offer a kit I'm told it is too expensive because parts are based on Australian prices and then there is postage on top. It also seems that I'm expected to do all of the assembley and acquisition for nothing. Look what happens to my CARC breather idea as an example.

What I will do is list all of the stuff I use and do a photo-essay of assembly and install. Then if people are interested they can build and fit their own.

Pete

[ohiorider]

Bob, when the 'Stats arrive and I have some time, (It's coming up to my quiet time of year so it shouldn't be far away.) I'll work out the where and the how and what to buy to get it to fit.

I'm thinking that probably I'll be able to fit the stat inside the cooler housing and mount it to the sump spacer by drilling and tapping a couple of holes in the spacer. The spacer is 20-25mm thick so 10mm bolts won't be a problem. The it's simply a matter of working out hose lengths and the fittings needed to plumb it all in unobtrusively and effectively. I think the biggest issue will be accomodating the tight bends needed behind the cooler to plumb the hoses up.

I would probably offer a kit but every time I do something like this and offer a kit I'm told it is too expensive because parts are based on Australian prices and then there is postage on top. It also seems that I'm expected to do all of the assembley and acquisition for nothing. Look what happens to my CARC breather idea as an example.

What I will do is list all of the stuff I use and do a photo-essay of assembly and install. Then if people are interested they can build and fit their own.

Pete

Pete, your solution goes above and beyond the call of duty!  I meant to mention that JAGG (another bypass mfg) is located within 125 miles of my home.  It'd be interesting to see if I could schedule an appointment with them, ride the Griso there, along with parts book drawings, and see how they'd recommend using their bypass.  It's 'iffy', but it's also a beautiful Ohio ride to where they're located, so it could happen!

Bob