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Best way to clean internal engine varnish ?

  • Thread starter Thread starter Guest
  • Start date Start date
Nessism said:
Great idea, please let me know how much more oil. Only fly in the ointment is how to judge the oil level as you accumulate mileage on that oil change? Maybe pinch off the oil lines at the back of the engine right after shutting down to keep the oil from draining back? Just don't forget to remove the clamps after you top off the oil.:oops:
Click to expand...


No problem, I'll let you know after I do it
 
hikermikem said:
Thanks everyone for the great advice... think I'll keep the cooler on for the short term anyway, can't hurt.
Click to expand...

Can hurt, cold oil does not flow the same as hot oil, parts of the engine may suffer. At least get a cooler with a thermostat.
 
tkent02 said:
Can hurt, cold oil does not flow the same as hot oil, parts of the engine may suffer. At least get a cooler with a thermostat.
Click to expand...

Hmmmm..... didn't condider that, good point. Great, more data to kick about!
 
tkent02 said:
Can hurt, cold oil does not flow the same as hot oil, parts of the engine may suffer. At least get a cooler with a thermostat.
Click to expand...

Most of the second generation GS engines came with oil coolers from Suzuki. None have a thermostat. In fact, just about all air cooled Japanese bikes starting some time in the mid 80's came with oil coolers...and none I'm aware of have a thermostat.
 
tkent02 said:
Can hurt, cold oil does not flow the same as hot oil, parts of the engine may suffer. At least get a cooler with a thermostat.
Click to expand...

I suppose if you are operating a bike in a climate where your start up ambient temp is rather chilly, then a cooler with a thermostat is a good idea. Not sure where the temp cut off would be, but I'm not located in Northern Canada!!
 
If your oil temp never goes above 250 there is no need for a cooler. All it will do is slow down how long it takes to warm up the bike which is bad. Unlike the VW bug (air cooled) which had a thermostat flaps that blocked air flow until the engine warmed up, bike engines are being cooled all the time and are slow at warming up (one advantage of water cooling). Yes the 2nd gen bikes had coolers but they were small and were probably put on the bike for marketing reasons. I might be wrong but I would guess the early GSX-R which had very big coolers had thermostats. The second gen bikes might not of had thermostat because of bean counters, to leave the thermostat out is not ideal. Also I would not be so sure they did not have some kind of simple oil pressure valve that when the pressure was high (cold engine) diverted the oil away from the cooler. Again VW did this trick on the bugs. There is a engine cleaning product called cycle-rx is very good at de solving internal sludge and varnish. Dan
 
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I've thought about a cooler. I do a bit of traffic riding on the work commute. I've been unsure of what to look for though. Is there a general rule on what more modern bikes or aftermarket coolers are out there that are a pretty clean fit on GS engines?

I stopped by the local indy shop today to show the guy my bike. He had mounted some tires for it, but had never seen the bike. He talked about that GS bottom end "You can't tear them up. I've seen engines run out of oil, and the top end is trashed, but you can't hurt that roller crank". I said something about my little weep around and the head, and he said "you might as well just live with it. When these engines get hot the head literally moves around. When you can't stand it anymore, or it gets bad, fix it, but on these air cooled engines. It just comes with the territory".

Both pretty interesting comments I thought.
 
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