Oil cooler ports, face up or down?

**Nessism** · 10-14-2008, 10:19 PM

I installed an Earl's motorcycle cooler (which is pretty large as far as coolers go) on my 850 and measured the oil volume at 6 oz including the hoses.

**TheCafeKid** · 10-14-2008, 10:22 PM

Originally posted by rapidray

Sorry Josh but I forgot who started this thread. I, personally, mount all of my oil coolers with the inlets UP so the oil stays in when I shut the bike off. Suzuki does it that way too so I trust them. Ray.

Oh i dont disagree with you one bit Ray, If id had my druthers, i would have installed it inlets up as well, but it simply didnt fit that way without putting the cooler almost on top of the header pipes, which in my mind would have sort of defeated the purpose, as they get rather warm

That was on an 1100G tho, i noticed on my ES that there is much more room for the cooler. My concern was that of the already LOW pressure behind the oil, if it werent full or very close, you could cause the pump to cavatate, which would be badnews. I suppose tho, that people have been running these things for years, and I am a bit of a worry wart...lol

**rapidray** · 10-14-2008, 10:27 PM

Josh, for cavitation to EVER happen on a GS1100E, you would have to be below 2 quarts of oil! Pro Stock bikes run with only 2 quarts but their pickup is re-worked. Remember this, the engine starts with the cooler empty & pushes all the air out of the system. Once that is done the air vents out the crankcase vent hole! Do yourself a favor & get the GS750 oil pump gears for your bike FIRST thing! Ray.

**TheCafeKid** · 10-14-2008, 10:31 PM

Originally posted by rapidray

Josh, for cavitation to EVER happen on a GS1100E, you would have to be below 2 quarts of oil! Pro Stock bikes run with only 2 quarts but their pickup is re-worked. Remember this, the engine starts with the cooler empty & pushes all the air out of the system. Once that is done the air vents out the crankcase vent hole! Do yourself a favor & get the GS750 oil pump gears for your bike FIRST thing! Ray.

WHat year 750? I have an 80 on the bench downstairs that the top end is shot on. I dunno what from, hopefully not pump failure ( think it picked up something in the exhaust side ports, as its the only side with scored cams) Will that pump work? If so, is it drop in to the 1100E? I have to replace clutch springs soon, and was hoping to come across a welded basket too, but either way I planned on taking my clutch basket out and checking it out. If its fairly easy, I could swap the pump while i was in there...