Topic: Oil Cooler Thread

[rucorey]

In my quest to make my 750f a cafe racer, I've been looking at every article, picture, rumor and wives tale bout the CR750. All those models put the cooler in line with the plumbing from the oil tank. Are there any benefits to putting the cooler into the system at the oil tank as opposed to at the filter? I was fliirting with the idea of putting the cooler behind the seat (in the new bubble).

Killer, Do you have any shots of the adapter?

[Killer Canary]

I've actually seen pictures of early 80s competition Canadian superbikes with the radiator fitted where you said, but that location was banned because of vulnerability in a crash, covering the track in oil. I could dig up a picture of that mounting if you're interested.
You can see my cooler plate with the filter off in one of my gallery pictures.
14,000 miles since I installed it.

[mrbreeze]

Hey Terry,I will put your name on my winter list for an adaptor.How much for your cooler? Does it have all the mounting hardware?

[Terry in Australia]

G'Day Breezy, it's just a bare Derale cooler (can't remember what it came off) so I'd have to make some mounts for you, what sort of bike are you gonna put it on? Cheers, Terry.

[mrbreeze]

Terry,I think I will just hold off on the cooler for now but i will be contacting you in the next couple of months for the spin on adaptor.I just got a new truck and will be pumpin my bike $ into the truck. I have some things I want to do to the bike this winter and that filter adaptor is now one of them.

[MRieck]

It's a nice piece. You'll dig it.

[eurban]

Hey all,

My recently completed 750 project has a set of Wiseco 836cc 10-1 pistons a mild Megacyle cam.  I was interested in some opinions as to how necessary an external oil cooler would be to this setup.  I live in the DC area and it gets pretty  hot in the summer with a good bit of traffic.  I certainly want to protect my investment but the added complexity/clutter of an cooler setup gives me pause.  Is the 750f2/3 stock factory setup worth anything significant for cooling (finned extension block between the filter housing and case) Thoughts?

[ProTeal55]

Oil coolers are great , but I don't see having one on a cold blooded bike. Your's is def. not stock , so that would make
a difference. As more compression makes heat faster. M cb takes long enough to warm up without a cooler...

If I were you , I would look into the HD world and get a bypass valve which you could turn the cooler on and off , so to speak.
It is just a 1-way valve , which when in the "on" position allows oil to go thru the extra lines and cooler. When in the
"off" position, it makes the oil bypass the cooler and go back into the motor as if the cooler wasnt their. Pretty slick design.

With this nifty little device, you can have the cooler"off" during startup/warmup, and on cold days when you want your bike to
stay warm , and then with the turn of a knob you can have your cooler "on" when traffic gets bad, temps get hot , etc..

My 2cents....

[bwaller]

I installed a lockhart cooler back when I first ran a larger then stock bore. I never used a bypass, but warm the engine up accordingly. The bore is now stock, but when I'm riding on a really hot day and you reach over to feel how hot the cooler is, I fiqure it's worth it .  I only use 10W-40 non synthetic (Montreal area) and always found the underside of the pistons very clean and no gummy build up which can be a sign of less than optimum operating temps.  Honda didn't fit one originally so it isn't really necessary for a bone stock engine, but create more heat and I say it's wise.

Brent

[eldar]

Honda also created these engines in japan 36 years ago and less was generally known about heat then and I dont know if japan gets as hot as many areas of the US do.

I think for the most part, if you use regular fuel, not premium, and keep up on oil changes and are not in stop-go traffic a lot, the engine is probably ok unless you are hitting 100+ degrees.

Above that and unless you keep moving, an oil cooler I think is a good idea even for a stock engine.

[Sam Green Racing]

Have a word with Terry In Aus.

[Sam Green Racing]

Quite a few people have had crank case pressure problems with this big bore kit.

There was quite a big thread on it, you may want to look for it.

Sam.

[amattel]

I have a 750k2 with the wiseco 836 kit and Webcam 41a cam.

It seems to do just fine as long as its in reasonable tune.  AS it slips out of tune it gets hotter.

I've put around 10k on it since the rebuild and haven't had any issues with overheating.

I've even had it down in pheonix with 114 temps where it felt like a blast furnace riding down I17!!

Adam

[eurban]

As to the issue of crankcase pressure, the cam cover vent hose on my bike when stock (78k) was routed to the airbox and never to the oil tank.  The connection to the oil tank is a hose from the back of the engine. Since I use pods I have this hose routed to the stock "spooge" collector/separator and then to an aftermarket breather filter (Stock setup was to have the hose from the collector go to the air box) Most of those who have pressure buildup seem to have their breather hose connected directly to the oil thank.   I have seen no evidence of pressure build up in my tank and my engine isn't dripping any oil so far.   As to the oil cooler, I actually have all of the bits and pieces I need to put a cooler on including a new Lockhart radiator, the adapter plate that goes beneath the filter and even a Lockhart thermostat.  As much as I hate to admit it, my main motivation not to install the cooler setup is that it will mess up the clean lines at the front of the bike.  I may just wait till spring/summer rolls around to see how she handles the heat.  Thanks for the replies.

[eldar]

Bikes are limited on mounting locations. If you did not already have a cooler, I would say to find a small one and mount it in front of the rear tire with a small guard to protect from rocks. It would then be out of the way and would still work at least somewhat. You could remove your center stand and mount it there too but that could make some work harder.

[MRieck]

I haven't had any problems with crankcase pressure. Oil temps will really get up there with an 836 and good compression. I'd run a cooler even if the engine is stock. It can only help.

[Killer Canary]

On a 550 it helps to cut off the down-pointing barb fittings and braze on elbow fittings, pointing at each other, then run the lines between 2-3 headers. Looks good, too.

[Terry in Australia]

Not trying to blow my own trumpet here men, (perish the thought!) but check this:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ru=http%3A%2F%2Fsearch.ebay.com%3A80%2F%2Fsearch%2Fsearch.dll%3Ffrom%3DR40%26satitle%3D4597938339%26fvi%3D1&item=4597938339

I've also got a couple of "in line" Lockhart thermostats that I'll be offering in later auctions for complete cooler kits. Good thing with these is that you can run your cooler 24/7 and it'll only get oil to cool when the oil's hot enough warrant cooling! Cheers, "Kooler King".

[volz1fsu]

I am looking of an oil cooler sandwich plate for my 550.  I don't want to pay big bucks for one.  I seen a new billet one for a 400f for $100 and that is a little too ridiculous for what it is.  Maybe some one has another source for a less "fancy" one.  Or just a used one from any of the sohc4 engines would be good enough for me.  I don't want a whole kit or anything, just the adapter. Any Help?

[SteveD CB500F]

Talk to "Terry in Australia". He makes them.

[Jim Shea]

Also, try posting in the 'wanted' section on the forum.

[Terry in Australia]

Check this mate, more than you need I know, but at only 49 bucks (so far) it's a bargain, ha ha!

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4606080529&rd=1&sspagename=STRK%3AMESE%3AIT&rd=1

[volz1fsu]

Check this mate, more than you need I know, but at only 49 bucks (so far) it's a bargain, ha ha!

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4606080529&rd=1&sspagename=STRK%3AMESE%3AIT&rd=1

Now that is something I would spend some cash on, very nice set up.  Cash flow is kind of low at the moment, Would you be putting any more of these kits on in the future? What was the buy it now price Terry, maybe I could buy another kit right from you?

[Terry in Australia]

G'Day Mate, I'll be a doing a few more when I can find good used coolers, the buy it now price was $200.00, which is a tad less than the thermo bypass lists for on it's own here in Oz, without the actual cooler and adapter or hoses etc. All up there's over $400.00 worth of components, but I'll be happy if I see half of that, ha ha! Cheers, Terry.

[volz1fsu]

G'Day Mate, I'll be a doing a few more when I can find good used coolers, the buy it now price was $200.00, which is a tad less than the thermo bypass lists for on it's own here in Oz, without the actual cooler and adapter or hoses etc. All up there's over $400.00 worth of components, but I'll be happy if I see half of that, ha ha! Cheers, Terry.

Great! I definetly plan on buying one from you in the near future after I save up a little.  I was going to make my own setup but yours is beautiful and is definetly worth the inverstment. That chrome filter is very tricked out too.