Oil coolers

Hey I found a used oil cooler and want to install it on my 1982 xj750j. I was wondering a few things. Do you have to remove anthing from under the oil filter to install the donut so oil will flow into the cooler line to the cooler and do you have to add any additional oil after installation? I would think so about a quart I bet???

 

does it use the original filter can or do you use a spin-on filter ?
either way you need some kind of pipe to tighten it down to
might be longer or shorter but i doubt the old one will work
i think people said they made a bracket to hold the rad on

 

To install a YAMAHA Oil Cooler ...

The Oil Filter Dome is removed and the Bolt and Filter put aside.
The Cooler Bypass Element is fitted to where the Oil Filter Dome would be.

The Cooler Element has an O-ring Seal.
A Special Hallow Attachment Fitting secures the Oil Filter Platform to the Engine.
The Special Fitting has Hes Flats to tighten it.
It is hollow and threaded to accept the Oil Filter Bolt.

Oil Cooler Lines fit to the sides of the Oil Filter Platform.

 

Thanks. There is a square box on the underside of the platform, does that fit over anything or just in the open void. I guess the oil flows through the collar of the platform into the lines you install to hold the platform on?

 

The Oil Flows through the Filter, through the Cooler and back into the Plant.

 

Thanks for all your help !! Its installed and doesnt leak !! yay

 

Hey do you have to add additional oil after the oilc cooler is installed.

 

Just a little bit.
I never gave it a thought until you asked.
Maybe a half-a-pint.

 

So, uh....where might one find one of these YAMAHA oil cooler that just snap right on to the bike???

 

Got mine from ebay used, but you can get them new also.

 

Any real advantages if you DON'T live in HOT zones or do LONG/Hot rides regularly?

 

The motor will run cooler in hot or cool zones. More oil in the system I would see as a bonus and less breakdown of the oil between oil changes. Kinda like small pick up trucks with tranmission coolers, prolongs the life of the tranny and makes everything run cooler. I had a GMC sonoma that burnt the tranny up and when I replaced it installed a cooler and never had another problem for like 125000 miles so far, first tranny went at 55k

 

How'd you mount the radiator? I've got a cooler setup sitting here that I haven't gotten around to installing.

 

The turbo xj bikes came with a oil cooler found on ebay $99.99 + ship
http://bit.ly/cWPuAV
I would wait for all the mount brackets/ oil filter adapter for that price though

 

I got one from an FJ600 for my 550; haven't mounted it yet but looks like it'll pretty much just bolt right up.

They come up on eBay all the time.

 

So there is just another piece between the engine and the oil filter cover that redirects the flow? I looked on ebay and I didn't really see how it would attach to the engine.

It's not really all that HOT in San Diego, but I ride on the freeway and in traffic a lot (commute and errands). It seems like a little bit of cooling could go a long way. Then again, maybe I don't need that extra tubing for my oil to go through. Is it worth the price and effort?

 

I have a 900 Cooler on my 750 max.

Basically, it's a "Bolt-On".

I hung the Cooler from the Captives where the Horns are hung.
I made "Shock-mounts" for the Lower Brackets.

A Cap Screw -> Flat -> Rubber Hose -> Flat -> Cooler -> Flat -. Nylock Hex's secure the BOTTOM to the Bike.

The Upper Mount: A Pedestal that needs to be held by a Brazed-On Cylinder requires --> "Lengthening"

Get a NYLON "Vinyl Hose Reducer"
A "Step-down" Reducer.
The Inside Diameter of the Large-end fits OVER the Oil Cooler Pedestal.
The Outside Diameter of the Small-end fits INSIDE the Frame's Braze-On.

To make the Outside Diameter of the Small-end ... fit "Vibration-free" ... place 5-Tight-fitting O-rings on the Reducer.

Clean and Neat.

The Cooler NEEDS to ride low or the TOP of the Cooler will get bumped by the Lower tree.

The Cooler lets you live at the right-hand-side of the Tach without stressing the Head and Block ... because the Cooler supplements the Air Cooling and keeps things chilled-out no matter how hard you get on it.

Heat is a killer.
The Cooler eliminates a bunch of heat.

 

day it couldnt hurt to have it on there but there are lots of these bikes running around after a lot of miles that never had one.

 

Exactly. There is a piece that simply extends the filter flange out an inch and a half or so, and the cooler pipes come off the sides of that.

As far as necessity; I don't know. For some reason Yamaha fit oil coolers to almost every XJ built for the rest of the world, from the XJ500 (not 550) on up, but not on the USA-market bikes except for the Turbo and the 900.

I wonder if they thought maybe that because of our "wide open spaces" we ride faster so the air cooling was all that was needed, I dunno. Or that we don't ride as much?

My feeling (and the reason I plan to fit one myself) is the same-- every bit helps.

 

i love these discusions, here is my take on it. if you do alot of in town short distances or cold weather riding. an oil cooler might hinder the oils ability to gain heat and clean itself of moisture and what not contributing to engine sludge. but if your on the road alot in the heat of summer and ride long distance i can see an advantage. what do you all think?

 

I'm an Engineman in the Navy. Believe me, if you get water in the oil, it's not coming out by running the engine at a higher temp. I wish it were, my life would be a lot, lot easier!

I'm more concerned with keeping the engine as cool as possible. I know what heat does to engines. Granted, there is a minimum temp, but for our 600 hp diesels, that temp is around 85F. I'm pretty sure an oil cooler isn't gonna get it down below that.

Fitz, so I should look for an oil cooler from a xj (already found some) that has a ?single? piece that attaches to the hoses....and that is the piece that will match right up to my oil filter assy? I ask because it seems the cooler itself is easier to find than the attachment piece.

 

Correct.

I'm going to be taking pictures of some other stuff this afternoon, I'll snap off a couple of the oil cooler assembly I have; the oil filter flange thingy is the same.

The single most difficult part to locate is the special BOLT that holds the cooler flange on the front of the motor.

 

i agree with you to a point but your diesels are completely different in every way than these bikes. i wasnt talking about water! when are you gonna get water in the engine aside from poring it into the crank case yourself, or a headgasket failure? im saying moisture, condensation from sitting. oil will get condensation in it and wont function normally. if left to cold for to long it can sludge up. these bikes make a fraction of the hp your diesels do and rely on air to cool em off not the heavy duty cooling system your motors require. im a ford diesel tech im femiliar with that whole side of things. now on oil cooler on a hot summer day will def protect these motors better than anyting. but in the cold months id say more frequent oil changes are needed, if you ride it like a baby of course

 

Fitz...that would be awesome, thanks!

aposolus...i guess i don't understand the difference between water and moisture...?

I need an oil cooler...there is no winter where I live, it is my chosen main transportation as long as I don't have to carry too much, and I definitely don't ride it like a baby!

 

im totally with you on the fact that having an oil cooler is better than not having one, i would rather change oil a few more times for the added confedence. you realy never heard of the fact that oil needs to reach a certain operating temp to keep it clean? anyway this is stupid. OIL COOLERS RULE!!

 

I'm always interested in learning more so I did a little research. I found this article that says the same thing you are saying, and a small chunk of this site (do a search for "moisture") that also says something similar.

I forgot for a second that Fuel + Air ---> CO2 and WATER....surely water is one of the products that ends up in the oil under normal use.

Your premises are correct and I think that if you don't feel you need an oil cooler, then you probably don't. But for a relatively cheap and easy upgrade, if you think it might help, it's probably worth it.

It's not going to be high on my priority list right now though, unless I see the entire assembly on ebay for 50 bucks!!

 

I paid $24 USD for mine with everything (flange, bolt, hoses, lower bracket) except the bracket to mount the actual "radiator" portion.

Keep your eyes peeled...

 

For $24 plus the fun of installing it....I can't afford NOT to have it.

 

Just about every single drop of "Water" goes right-out the Tail Pipes.

Any other form of Condensation or Moisture gets vented out of the Engine through the Crankcase Vent as Vapor.
The Vapors get vented to the Airbox and either re-enter the Intake Air and get released through the exhaust or evaporate.

A fraction of a percentage of moisture gets emulsified in the Oil and boiled off or suspended until the Oil is changed.

Obviously, Bikes with severe Blow-by and Ring Problems will have higher levels of contaminates in the Oil.

But, by and large, the Engine with an Oil Cooler will be subjected to less Heat build-up.
And, the overall decreased temperature will keep the Oil temperature lower providing surfaces which get Oiled more protection from Heat-related viscosity break-down.

It's too bad Oil Coolers weren't Standard Equipment.
There might be less trouble with Chain Guides and Start Clutches if equipped.

 

Speak of the devil.....

http://cgi.ebay.com/ebaymotors/1988-Yam ... _500wt_713

Those newer oil adapters from the FZ's....they almost look like they might function as both a oil cooler adapter AND a spin on adapter at the same time....

anyone have any experience with that?

 

quick question, isnt there a law that states air cooled bikes dont have to sit though traffic? i heard about it and do it all the time. hope im not breaking the law. but it seems logical to me.

 

No....in California there is a lack of a law against two vehicles being in the same lane at the same time. Theoretically, if two cars could fit, they could sit right next to each other in the lane. Other states specifically prohibit this. As far as I know, Cali is the only state that still allows it, but it's also the only state I've ridden in, so I don't really know.

However, since that in all reality only applies to motorcycles, we (and this is why my xj is my daily driver) can cut right through traffic, since there really isn't any traffic. It would be like having an open lane that no one else chose to use.

It is a misconception that the law has anything to do with air-cooling. Your bike is not a shark, it can stay stopped for a few minutes without a problem. There is no load, low rpms, and convection cooling, meaning that the heat that is produced goes up, and the cooler air from below (approx.) replaces it and cools it.

Of course if you are spending 45 minutes syncing the carbs, you prolly want to use a fan.

Heck, now I wonder if water cooled engines really are that much better than air cooled, and why. They don't really have a fan like cars do to pull air through when they are stopped, do they? And it doesn't seem like a radiator is really the best way to convection cool that much heat.

Now I'm confused.

I think the other question you are asking is: Are bikes with no water but an oil cooler still air cooled, or are they now in the "oil-cooled" category and out of "air-cooled" all together?

 

You can safely and legally go thru a red light (in Florida) if the sensors in the road don't pick up the bike, and the system skips you. The law states you have to be there 3 minutes first, but who's counting??

 

My 85 FZ750 has a fan. Most production water-cooled bikes have fans. Without that airflow they would melt in traffic. And a bike that has an oil cooler is then technically air/oil cooled.

 

as far as i know, liquid cooling is for higher horse power vehicls that creat more heat or have to take alot of abuse like sportbikes stuff. so i cant blast through traffic legaly? :cry: bummer.
day, no i wasnt asking that question, but that is an interesting thing to ponder.

 

So, can one assume that the oil cooler and related fittings from a Canadian spec 1982 Seca 650 would bolt right onto an American model XJ650RJ? :?:

 

Very safe assumption there... SHOULD anyway.

 

I promised a couple of pictures of the oil cooler "adapter flange" that goes on the front of the motor between the oil filter housing and the block:

FRONT: (Filter side)




REAR: (Engine side)




While the configuration and length of hoses, and the size/shape of the radiator portion varied between bikes, this piece would be the same for any XJ-series motor.