Jersey Big Mike
100K mile club
Is there anything in that pic that is cool -- all I see is HOT!
Oil Cooler
- Thread starter vej
- Start date
JR03CHOPPER
Well-Known Member
Well I am/was...Lol! Just blew the rear cylinder head gasket on the 124 in the K9. So, after I see what all is going in with that...I would like one for the K9.
JR03CHOPPER
Well-Known Member
JR03CHOPPER
Well-Known Member
No one knows. Original owner of the K9 picked it up at a swap meet out of a deceased Iron Horse. The motor has about 9000mi since it was installed in the K9. Nice part was with the blown gasket, there was no oil leak...just air. Inspection of the front head, no problems. Clean and solid. Having trouble getting at the rear (one that blew) because the motor is so close to the frame. May have to remove the motor to get at the head.
Oh this is your new K9. Forgot you just got the 124
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Matheny 514
Active Member
Let us know what you find. Also what were the conditions upon the gasket failure? Under heavy load? Or just cruising along?
JeffM
Active Member
I have never had oil coolers and any air cooled motorcycle i have owned, i can't see how if your stuck in traffic and you don't have air flow how it can be 20 deg cooler?
Putting around town in summer (32-42 Deg C) it constantly sits on 200 -212 F and out on the open road down to 180 -190 F.
I have my tool bag under my head light as well, but i look at those pics and see the downtube oil coolers restricting flow to the motor also putting hot air directly onto the motor.
Not for me.
Putting around town in summer (32-42 Deg C) it constantly sits on 200 -212 F and out on the open road down to 180 -190 F.
I have my tool bag under my head light as well, but i look at those pics and see the downtube oil coolers restricting flow to the motor also putting hot air directly onto the motor.
Not for me.
JR03CHOPPER
Well-Known Member
Where is Sven when you need him? The fins on the cooler are there to increase surface area, much like the fins on the engine. Difference is there is no combustion (heat producer) or moving parts in the cooler causing friction (also a heat producer). So all there is is heat exchange going on from the cooler. Clearly, no matter how hot it is outside, the outside temp is cooler than inside the engine, thus reducing the temperature of the oil. Having had both set-ups...it works.
JeffM
Active Member
I understand the principal/idea i just can't see the need.
My early thoughts of stationary air cooled motors were that of an old Lister single cylinder motor driving a generator, in a tin shed, in the middle of summer with only the air it generates to cool it. Some days as a small boy i would have to check the fuel. I would kick the door open sit outside for 10 minutes prior to entering , it was so hot in there i could hardly breath, i certainly couldn't touch any thing. It didn't need a cooler and ran for over 10 years before it was replaced with a water cooled motor which lasted 1 year.
All i am saying is that if you allow the fins to do what they are designed for without putting obstructions in their path then all is well.
These motors are designed to run hot, if not the tolerances would not be as big as they are.
My early thoughts of stationary air cooled motors were that of an old Lister single cylinder motor driving a generator, in a tin shed, in the middle of summer with only the air it generates to cool it. Some days as a small boy i would have to check the fuel. I would kick the door open sit outside for 10 minutes prior to entering , it was so hot in there i could hardly breath, i certainly couldn't touch any thing. It didn't need a cooler and ran for over 10 years before it was replaced with a water cooled motor which lasted 1 year.
All i am saying is that if you allow the fins to do what they are designed for without putting obstructions in their path then all is well.
These motors are designed to run hot, if not the tolerances would not be as big as they are.
JR03CHOPPER
Well-Known Member
I hope. Or may be on Old Faithful!
TapioK
Well-Known Member
Did you get those foot pegs for K9 Someone in Fayetteville was looking for extended and had originals...
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And some people still wonder why some have multiple bikes......
Are you 100% sure it's head gasket? Not a very common issue.....
Matheny 514
Active Member
I'd be interested in that if JR isn't.
BadDawg Bill
Well-Known Member
If you do a lot of city driving in the summer they help but the oil has to get to 200* to burn off water and contaminates so under 212* is not a bad thing. A buddy of mine put a big oil cooler on his Corvette because it was running at 220*. It brought it down below 200*. A year later the motor blew and they told him it was because of the oil cooler...
JR03CHOPPER
Well-Known Member
Lol...ended up with two sets of stock and one set of extended. Was going to sell the extended and the extra pair of stock.
JR03CHOPPER
Well-Known Member
Pretty sure. Blowing air out of the middle of the rear jug on the left side. Loud air leak! Not much oil though, so fingers crossed...no internal damage.
TapioK
Well-Known Member
So matheny above is buying, you are selling. That sounds almost like a deal!
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