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oil cooler

  • Thread starter Thread starter Wolfdogg40
  • Start date Start date
image.jpg

Lines snaking between headers (they're heavily insulated). Cooler is up top.
 
image.jpg

Another look. Cooler is up top (not visible in photo), lines go straight down to either side of the filter cover, where they bolt into inlets that are a part of every '82 and '83 11E engine block.
 
I would agree that most stock GS motors don't really need oil coolers. Built performance motors or those run hard in hot conditions need the extra cooling capacity. :)
 
salty_monk said:
The 8v engine doesn't have those inlets. You need to make an adapter for the oil pressure switch housing. Some run the return into an adapter in the filler hole. :)

Here is a current thread. https://www.thegsresources.com/_forum/showthread.php?184482-Lockhart-Oil-Cooler-Adapter-Gasket

Nessism has a "how to" on how to make one from a spare cover somewhere.... I may possibly have a spare cover from an engine I broke up years ago. Yours if you want it. :)
Click to expand...
Do not run your return line from the cooler into the the oil filler cap! Doing so will destroy your engine. The oil is picked up in the sump and pressurized by the pump. It is filtered, run through the cooler, and returned to the oil galleries of the engine. If you choose to just return the oil from the cooler to the sump through the oil fill cap you are not pressurizing the oil passages that lubricate the engine! If you see a return hose going into the oil filler cap, it is usually a return hose from a turbocharger or a breather hose to evacuate crankcase pressure. Dar
 
Ok so the 81' 1100e I am going through has a Deraile oil cooler mounted on it. My plan was when I get to that area to make up some better mounting brackets, add steel braded lines, make sure the lines are nowhere near the headers and of course clean up filter cover of the mess that remains after a thorough degreasing of the entire bike.
May I ask if the way its plumbed is correct by the picture? Also is there a gear count known for the 750 oil pump upgrade or another way I can tell if it's been done when I check it out? I live in Alaska and wont be taking the bike to a track...just enjoying it as a comuter. Been wondering if I should just pick up a different cover and nix the cooler idea all together. But then again if its helpful it would look cool all cleaned up with pretty stainless lines on it and I know cool factor makes a bike faster......that's my story any hoo.
 

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Cwoods said:
Ok so the 81' 1100e I am going through has a Deraile oil cooler mounted on it. My plan was when I get to that area to make up some better mounting brackets, add steel braded lines, make sure the lines are nowhere near the headers and of course clean up filter cover of the mess that remains after a thorough degreasing of the entire bike.
May I ask if the way its plumbed is correct by the picture? Also is there a gear count known for the 750 oil pump upgrade or another way I can tell if it's been done when I check it out? I live in Alaska and wont be taking the bike to a track...just enjoying it as a comuter. Been wondering if I should just pick up a different cover and nix the cooler idea all together. But then again if its helpful it would look cool all cleaned up with pretty stainless lines on it and I know cool factor makes a bike faster......that's my story any hoo.
Click to expand...

So the 1981 11E, unlike the '82 and '83, was not designed to have cooler added? Those two bolts on the sides of the filter cover...?
 
When oil cooler sellers put their kits together this is how they came. Either way works fine. The cases are the same.
 
TeamDar said:
The cases are the same.
Click to expand...

The engine cases? The '82 and '83 11Es are different - designed with the cooler in mind, so lines didn't have to be run around the sides or over the top (through the tunnel) to the back of the engine. Just straight down a few inches from the cooler to ready-made inlets on either side of the filter cover.

Am I wrong?
 
Rob S. said:
The engine cases? The '82 and '83 11Es are different - designed with the cooler in mind, so lines didn't have to be run around the sides or over the top (through the tunnel) to the back of the engine. Just straight down a few inches from the cooler to ready-made inlets on either side of the filter cover.

Am I wrong?
Click to expand...
Yes you are wrong. All GS1100/1150 chain drive cases from 1980-1986 have the ports next to the oil filter cover to run lines to an oil cooler. They are plugged if the model didn’t come with a factory oil cooler. The aftermarket coolers for the GS1100/1150 chain drives have oil filter covers with ports for the cooler lines.
 
TeamDar said:
Yes you are wrong. All GS1100/1150 chain drive cases from 1980-1986 have the ports next to the oil filter cover to run lines to an oil cooler. They are plugged if the model didn?t come with a factory oil cooler. The aftermarket coolers for the GS1100/1150 chain drives have oil filter covers with ports for the cooler lines.
Click to expand...

So in Cwoods pic in #27, why does he go directly into the cover and ignore "the ports next to the oil filter cover to run lines to an oil cooler"?
 
Rob S. said:
So in Cwoods pic in #27, why does he go directly into the cover and ignore "the ports next to the oil filter cover to run lines to an oil cooler"?
Click to expand...
Because the aftermarket oil cooler kits come that way. You would have to ask the manufacturers why. I would guess, because is it’s cheaper. The OEM system requires banjo fittings, hollow bolts, crush washers, and specific made lines. The aftermarket uses hardware store hose barb fittings, bulk rubber hose cut to length, and hose clamps.
 
Yes the 1150 set up looks and works nice. You have to remember that in 80-82 there was no factory oil coolers on the US spec models. The aftermarket parts manufacturers came up with a reasonably priced oil cooling system.
 
TeamDar said:
Yes the 1150 set up looks and works nice. You have to remember that in 80-82 there was no factory oil coolers on the US spec models. The aftermarket parts manufacturers came up with a reasonably priced oil cooling system.
Click to expand...

Very interesting info for this new GS owner. Thanks guys.
 
Rob S. said:
My 1100 didn't come with one, but it was designed with one in mind so it bolted right in.

The difference in oil temp was nothing short of amazing.
Click to expand...


Very good to know that!

I'm foolish for running my last +3mm big bore kit without buying one of the $140 oil cooler adapters to run one of the 2 or 3 oil coolers that I have on the shelf... The next big bore builds will all be getting oil coolers... I ride in the heat from Ohio down to North Carolina, I ride real hard, I ride high performance built modified engines, & some of them will see track time...


As to the comment about routing the cooler exit line to the drain plug or filler, I was taking that as the drain plugs that I have on some of my 8v oil filter covers.
I do have one complete NOS oil cooler setup with an adapter that bolts on UNDER the oil filter cover on the front of my 1st gen 8v engines.
Is the outside portion of the oil filter the "dirty" inlet side? And the center is the "clean" side?
 
Last edited:
Chuck78 said:
Is the outside portion of the oil filter the "dirty" inlet side? And the center is the "clean" side?
Click to expand...

The oil feeds up from the center and enters the distribution cavity, it then splits and some goes to the top end and the rest to the transmission. With a cooler the oil feeds from the pump and through the cooler, and then back to the distribution cavity where it goes to the engine. There is extra pumping losses with the cooler which is why the 750 pump gears can help. The flow will put your gaskets in the top end under stress though.
 
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