oil cooler - is it really worth it?
How do you know oil temps will climb to "Normal Without A Cooler" within 5-10 minutes. Have you seen this tested (before-30 to 40 degrees cooler, then after at hot idle) with a heat gun? It could easily be done on a dyno. Run it and run it with the dyno fan blowing on the motor on a hot day, measure temp without cooler, then add cooler with no other changes, repeat, then shut off dyno fan and keep bike running at idle. Measure heat gun temps again. Would love to see evidence of these oil cooler, and oil filter claims (love the one where the oil filter increases hp and torque).
Maybe it has been tested, I just haven't seen it.
Second,
What happens after that amount of time (could be only a couple minutes on a hot day at idle and stop and go in traffic) when temps climb to "normal"?
The motor temp will continue to climb and climb, with or without the cooler, that's what.
Only a good high cfm fan kicking in at idle would really make an difference (along with a top syn oil and quality tune, with all the restrictive heat producing exhaust and Intake stuff, thanks EPA, removed from stock).
As air cooled motors we need air to flow over the surface of the fins to cool it (except for VRods and 2015/16 wet head baggers).
How do you know oil temps will climb to "Normal Without A Cooler" within 5-10 minutes. Have you seen this tested (before-30 to 40 degrees cooler, then after at hot idle) with a heat gun? It could easily be done on a dyno. Run it and run it with the dyno fan blowing on the motor on a hot day, measure temp without cooler, then add cooler with no other changes, repeat, then shut off dyno fan and keep bike running at idle. Measure heat gun temps again. Would love to see evidence of these oil cooler, and oil filter claims (love the one where the oil filter increases hp and torque).
Maybe it has been tested, I just haven't seen it.
Second,
What happens after that amount of time (could be only a couple minutes on a hot day at idle and stop and go in traffic) when temps climb to "normal"?
The motor temp will continue to climb and climb, with or without the cooler, that's what.
Only a good high cfm fan kicking in at idle would really make an difference (along with a top syn oil and quality tune, with all the restrictive heat producing exhaust and Intake stuff, thanks EPA, removed from stock).
As air cooled motors we need air to flow over the surface of the fins to cool it (except for VRods and 2015/16 wet head baggers).
I know 5-10 minutes because I've been stuck in traffic before and closely monitor my oil temp, it's not rocket science, no dyno needed. and the point is irreverent to the fact that the non-fan cooler does in fact help you if you get caught in traffic,
arguing that a cooler that keeps your oil 30-40 degrees cooler while cruising is worthless while stuck in traffic is idiotic, besides if I'm stuck in traffic for more than 2-3 minutes then I'm turning off the motor anyway.
I don't care for the fanned coolers simply because it seems like something that you would spend hours wiring up and then would work for about 4 months and then burn up or get full of dirt & break or get wet and then never work again or just break from all the vibrations it encounters. I'm just not convinced a plastic fan would be durable enough for motorcycle use, it seems like a gimmick.
The Best of Harley-Davidson for Lifelong Riders
arguing that a cooler that keeps your oil 30-40 degrees cooler while cruising is worthless while stuck in traffic is idiotic, besides if I'm stuck in traffic for more than 2-3 minutes then I'm turning off the motor anyway.
I don't care for the fanned coolers simply because it seems like something that you would spend hours wiring up and then would work for about 4 months and then burn up or get full of dirt & break or get wet and then never work again or just break from all the vibrations it encounters. I'm just not convinced a plastic fan would be durable enough for motorcycle use, it seems like a gimmick.
The fan in your car is high grade plastic does the same exact thing to your radiator. Is that a gimmick? Turn that fan off and see what happens, Lol. yes we know the engines are not the same. But the principal remains. Fan assistance is better. Metrics use this on theirs and can sit idle /parade forever with no problems and run nice a cool at a constant temp.
We aren't that lucky yet but its coming. Hd is beginning to cave. Somehow the wetheads are revolutionary according to hd marketing.
The whole oil type vs oil cooler argument is weak. Yes you get lower temps with synthetic. Yes... ok. This accepted. The heat of the bike will still fluctuate and if you are sitting still, temp will still skyrocket. You are just buying time, as the oil temps will just be climbing from a lower temp. Not rocket science. Im not making an argument against synthetic.. i prefer it. It just part of the overall cooling equation.
*climbing onto soap box (run away now)*
constantly covered due to lack of search function usage:
- stage 1 concerns, ACs, pipes
- More hp
- more tq
- bigger engine
- go faster
- fitting parts for various riding styles
- make bike pretty (~40% of content)
- add ugly seats to calm the roids
- metric bashing/ sporty bashing/ big twin bashing
What is rarely discussed:
- braking mods
- cooling mods
- hooker usage
so you have a buncha sweaty, frustrated dudes that beat their wives (instead of proper hooker beatings) and ride around on overpowered easybake ovens that can't stop.
cooling outside of the touring forums is rarely discussed and when it is, some yahoo always comes out of the wood works to say, "if it was needed then it would be blah, blah, blah..." well, why is the moco stocking coolers for ever bike they make(- vrod&street)? What is the first thing you see when you open the gma2016 catalogue?
yes... an oil cooler with crooked, unglued cover, lol
Last edited by cvaria; Mar 27, 2016 at 07:11 AM.













