B Murr
Registered user
I see that touratech do an oil cooler bypass. I also see that they do an upgrade from R80 to R100 kit and it doesn't mention adding an oil cooler. Are these oil coolers really necessary??
R100GS Oil Cooler Bypass
- Thread starter B Murr
- Start date
judge
Registered user
- Joined
- Feb 24, 2002
- Messages
- 10,323
- Reaction score
- 7
Two schools of thought on this:
1) Not unless you're planning on overlanding in warm climes.
2) When did BMW ever fit something as practical as that in a very exposed (open to cooling) location that they didn't think was required
Mine is fitted (but relocated under the headstock) and will stay there until it blows, then I may fit the oil cooler replacement kit that's been in the garage since I sent my last one north to the Wirral.
1) Not unless you're planning on overlanding in warm climes.
2) When did BMW ever fit something as practical as that in a very exposed (open to cooling) location that they didn't think was required
Mine is fitted (but relocated under the headstock) and will stay there until it blows, then I may fit the oil cooler replacement kit that's been in the garage since I sent my last one north to the Wirral.
Thats pretty poor information from Touratech. The upgrade kits are made by Siebenrock. In their catologue they have the following statement in the upgrade kit section:-
"We recommend that you also fit an oilpan distance ring or install an oil cooler kit (both shown on page 12)"
http://www.siebenrock.com/07/catalog/technik_en.pdf
In the earlier Touratech catalogues the oil cooler bypass kit was sold as a "get you home kit" if the oil cooler was damaged.
It's worth looking the catalougue from Siebenrock. Quite a few of their parts appear in the Touratech catalogue with big mark ups. I've always found them to be a good company to deal with with quick deliveries
"We recommend that you also fit an oilpan distance ring or install an oil cooler kit (both shown on page 12)"
http://www.siebenrock.com/07/catalog/technik_en.pdf
In the earlier Touratech catalogues the oil cooler bypass kit was sold as a "get you home kit" if the oil cooler was damaged.
It's worth looking the catalougue from Siebenrock. Quite a few of their parts appear in the Touratech catalogue with big mark ups. I've always found them to be a good company to deal with with quick deliveries
GS Weissbeer
Guest
Thermostat
I´m thinking of mounting an oil cooler on my Siebenrocked G/S. From other local GSers I´ve heard that adding a thermostat is almost a must, especially in our climate. Otherwise the oil never reaches proper running temperature.
Quote from www.hpn.de: The thermostat is adjusted to begin opening at 90°C and is fully open at 110°C. This reduces the time to reach regular temperature and makes it possible to reach this temperature at all under bad weather conditions and in the cold season. Unqoute
Quite expensive though (220 euro)
I´m thinking of mounting an oil cooler on my Siebenrocked G/S. From other local GSers I´ve heard that adding a thermostat is almost a must, especially in our climate. Otherwise the oil never reaches proper running temperature.
Quote from www.hpn.de: The thermostat is adjusted to begin opening at 90°C and is fully open at 110°C. This reduces the time to reach regular temperature and makes it possible to reach this temperature at all under bad weather conditions and in the cold season. Unqoute
Quite expensive though (220 euro)
I´m thinking of mounting an oil cooler on my Siebenrocked G/S.
Quite expensive though (220 euro)
The RT & RS from 1979 onwards had thermostats as standard.
Just get a secondhand thermostat, straight replacement,takes the standard oil cooler hose and very cheap. It also has a bleed bolt so when you change the oil, you can drain the oil cooler as well
GS Weissbeer
Guest
The RT & RS from 1979 onwards had thermostats as standard.
Just get a secondhand thermostat, straight replacement,takes the standard oil cooler hose and very cheap. It also has a bleed bolt so when you change the oil, you can drain the oil cooler as well
I´ve heard that the G/S header pipes runs to close to the engine in order to fit the RT/RS thermostat
The RT & RS from 1979 onwards had thermostats as standard.
Just get a secondhand thermostat, straight replacement,takes the standard oil cooler hose and very cheap. It also has a bleed bolt so when you change the oil, you can drain the oil cooler as well
My 81 RT hasn't got an oil cooler but it does have a deep sump
I think it was only the RS that had an oil cooler as standard.Mike Whitworth
Registered user
Re Oil thermostat
I have just had a look at my 93 R100gspd and 89 R100rt Both with Oil coolers butthe gs does not have a thermostat, and unfortunatly with standard down pipes there is no way you would get the thermostat off the RT onto the GS . The RT down pipes are flaired out to accomodat the thermostat.
Mike.
I have just had a look at my 93 R100gspd and 89 R100rt Both with Oil coolers butthe gs does not have a thermostat, and unfortunatly with standard down pipes there is no way you would get the thermostat off the RT onto the GS . The RT down pipes are flaired out to accomodat the thermostat.
Mike.
friend has had a R100GS PD for years with the oil cooler removed. he makes yearly trips home to italy & has had no overheating trouble, but then he probably wouldn't know 
I've had a look at my spare GS oil cooler cover. It isn't a full flow device, looking at it the bypass hole will always allow a certain amount of oil to bypass the cooler, I would imagine this also reduces pressure in the cooler, when the ambient air is cold the oil in the pipes and cooler will be at a higher viscosity, as the engine warms up and warms the oil in the cooler the flow will increase through it cooling the oil again...it would appear to be self regulating to a certain extent.
Just my thoughts and not based on anything other than looking at the thing..what do you guys think?
Just my thoughts and not based on anything other than looking at the thing..what do you guys think?
Attachments
GS Weissbeer
Guest
It would be very interesting to know what the oil temperature is, a)without oil cooler, b)with unregulated oil cooler and c)thermo-regulated oil cooler?
Measurements should be made on the same GS model in similar weather conditions.
Does anybody know?
Measurements should be made on the same GS model in similar weather conditions.
Does anybody know?
I have just had a look at my 93 R100gspd and 89 R100rt Both with Oil coolers butthe gs does not have a thermostat, and unfortunatly with standard down pipes there is no way you would get the thermostat off the RT onto the GS . The RT down pipes are flaired out to accomodat the thermostat.
Mike.
For a monolever bike there are two types of down pipes available, flared one for oil coolers, straight through for non oil coolers.
But the earlier pre-monolever oil cooler thermostats are different.
But to be honest you don't really need an oil cooler anyway.
Don't think Jon Watson Miller had one in all the Tunis/pharoah rallyes he did on his GS back in the early ninties.
B Murr
Registered user
Thanks for all that info guys. How did we ever manage before the web, I guess it was all biker meets/slurred conversation over beer etc. Looks like they aren't really absolutely necessary but the seibenrock kit would be best solution if I wanted to fit one to a bike that didn't have one. The sump extension would probably effect clearance.
How did we ever manage before the web, I guess it was all biker meets/slurred conversation over beer etc. Looks like they aren't really absolutely necessary but the seibenrock kit would be best solution if I wanted to fit one to a bike that didn't have one. The sump extension would probably effect clearance.
- Joined
- Jan 6, 2002
- Messages
- 12,650
- Reaction score
- 1,246
Still owe you a big hug
( and maybe a pint or two ) for that superb gesture a couple of years ago..saved the day
judge
Registered user
- Joined
- Feb 24, 2002
- Messages
- 10,323
- Reaction score
- 7
Still owe you a big hug
I'll settle for the hug so long as someone holds my wallet first
Beemerboff
Registered user
Just fitted a oil temp dipstick to my non thermostat oil coolered 93 R100 GS.
The oil gets up to 90 c pretty quick , then seems to stabilise there.
It doesn't seem to move much after that,so there must be something in the previous post which states that it is to a degree self regulating
However it is winter here, 7-23 c and wet roads , I will have to wait a few months till it is 42 c in the shade and I am trying to keep the wind chill factor as high as possible to find out if it can cope.
The oil gets up to 90 c pretty quick , then seems to stabilise there.
It doesn't seem to move much after that,so there must be something in the previous post which states that it is to a degree self regulating
However it is winter here, 7-23 c and wet roads , I will have to wait a few months till it is 42 c in the shade and I am trying to keep the wind chill factor as high as possible to find out if it can cope.
Oil temperature
I have a temperature reading, filler, dipstick thing on my GS PD, fitted with an oil cooler. Dont know the accuracy but it was just into the red (120c)when I was riding it the other day. OK, the bike was loaded up but not overly so and it was about 30c and I was in the alps..................Seems to suggest that a cooler is a good idea. Just my 2Ps worth
Nick
I have a temperature reading, filler, dipstick thing on my GS PD, fitted with an oil cooler. Dont know the accuracy but it was just into the red (120c)when I was riding it the other day. OK, the bike was loaded up but not overly so and it was about 30c and I was in the alps..................Seems to suggest that a cooler is a good idea. Just my 2Ps worth
Nick
glad i don't have a gauge
B Murr
Registered user
High altitiude gives less cooling due to thinner air, however I'd guess the engine will run richer too and probably cooler because of that so maybe it balances out. Where can you get the guage from?
Beemerboff
Registered user
I got mine on Ebay , for about half of the Touratech / Wunderlich list price.
Didnt have a oil level marked so I had to scratch it on using the old one for reference , but apart from that it looks and works OK - I checked it against a jam thermometer to make certain it was around the mark , and it was spot on.
Didnt have a oil level marked so I had to scratch it on using the old one for reference , but apart from that it looks and works OK - I checked it against a jam thermometer to make certain it was around the mark , and it was spot on.
Similar threads
