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General Category >> Rubber Side Down! >> oil cooler
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Message started by fsmidt on 05/22/08 at 10:14:02

Title: oil cooler
Post by fsmidt on 05/22/08 at 10:14:02

in a short while i will have my suzi tuned with kit of Lancer.

carb,cam,exhaust and inlet tuned,bigger Raask muffler etc.

offcource the oil will be very hot ;D

anyone tried to install an oilcooler on his bike.

any ideas?

Title: Re: oil cooler
Post by verslagen1 on 05/22/08 at 11:18:24

nope never heard of it

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1201659121

No one's thought about it before

http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1151246239

Title: Re: oil cooler
Post by fsmidt on 05/22/08 at 11:34:42

kiss on youre cheek ..... ;D ;D

Title: Re: oil cooler
Post by barry68v10 on 05/22/08 at 13:50:19

A few of us have found it best to tap threads into the top of the oil filter housing and return cool oil there. The bottom plug is nearly inaccessable.

You can partially block the machined inlet hole to the oil filter to increase flow thru the cooler.

There are other threads around here from those of us who have done just that.

Title: Re: oil cooler
Post by verslagen1 on 05/22/08 at 14:11:13

another:
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1162649522/60
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1078465081/2#2
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1155323497/22#22
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1174627251/5#5
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1176655441/0#0

Title: Re: oil cooler
Post by fsmidt on 05/22/08 at 15:15:44

many thanks ,a lot to read.

in our dutch forum(www.suzukisavage.nl) it is an topic just started by me.

so i think we will learn a lot from you guy`s.

Title: Re: oil cooler
Post by thumperclone on 05/22/08 at 16:45:51

i got a oil tmp gauge(hwy hawk)for xmas 06 last summer 100 F oil temp never got above normal....

Title: Re: oil cooler
Post by Ed L. on 05/22/08 at 16:56:06

A oil cooler on a savage is doable, been using one for about two years. The oil flow diagram from Lancer is priceless for figuring out the best place to hook up the lines. I ended up taking the front plug and drilling it to fit a piece of steel brake line which I brazed into the hole. The plug is a strange size thread and I couldn't find any hose fittings that worked so I made my own hose barb. The return line goes to a fitting that I mounted on the top side of the oil filter housing. Had to drill and tap a hole in the side cover for the fitting. I tested the oil cooler flow and am getting almost a liter of oil per minute going thru the cooler at 1500 RPM with a warm engine. Couldn't measure the volumn at a higher rpm cause the test rig kind of came apart and sprayed oil all over ;D. A oil cooler doesn't help when stuck in traffic because it depends on air flow to cool the oil but it has helped at speed. I was able to measure the air temperature around the inlet and outlet of the cooler and found that there is a noticable temperature difference above 50 mph. I'm playing around with the idea of installing a small fan with a switch to help increase air flow in traffic. Another plus for having a cooler is that it increases the amount of the oil in the bike. A oil and filter change on my bike takes 2 3/4 quarts. Can't say that the cooler or installation is pretty but it works.

Title: Re: oil cooler
Post by Gort on 05/22/08 at 17:13:18

What about the issue of the Savage having very low oil pressure to begin with, and then asking that to work its way through a cooler whose passages may be restrictive in size and further reduce the flow rate? Also, what about when the engine is off and the oil drains back down out of the cooler, and then when you start the engine, the oil has to refill the cooler to get past it into the engine, while all the while the engine is running with perhaps less oil than it should have on moving parts? Furthermore, suppose cooler restriction reduces lack of flow, but not enough to quickly damage the engine, but enough to slowly shorten engine life? Automatic transmissions have been damaged by cheap coolers that were not correctly engineered for the application. It would be interesting to see what Suzuki's engineers have to say about this.

Title: Re: oil cooler
Post by verslagen1 on 05/22/08 at 17:48:50

5467617D6067150 wrote:

Ed L's cooler connects from the front oil pressure port to the oil filter cavity. It depends on restrictive passageways to pump oil thru it so actual oil flow rate should increase. :P

Title: Re: oil cooler
Post by Ed L. on 05/22/08 at 19:43:00

I was concerned about the time lag that would occur when the cooler was filling which is why I didn't close off the inner passage to the oil filter chamber. This allows the flow to split between the cooler and the internal passageway going up to the top of the engine. I'm not too worried about the cam getting oil, it sits in a recessed area that holds a pool of oil which lubricates it during startup. It also seems that the cooler doesn't heat up as fast as the engine does after a cold startup. The only thing that I can think that might cause this is that the oil viscosity in the engine decreases as the engine heats and flows thru the internal passageways while the oil in the cooler keeps a lower temperature and higher viscosity for the first 10 or so miles till everything heats up. Another explanation would be that the lines going to the cooler restrict the flow enough at startup so the engine gets most of the oil. I'm not real good at fluid dynamics so I'm just guessing. I can't see how the cooler can shorten the longevity of the engine, the bottom end of the engine is tough enough to withstand being run with low oil till the top end blows and as long as there is oil pooled around the cam the top end is lubed during startup.