Just thought i would throw out a teaser about the test i plan on running on the effectiveness of oil coolers. I had been planing to run a test if i could get a hand on a good- non billet cooler, and i just managed to get my hands on this bad boy for just 40 bones.
Anyways, here is how i plan to run it. First, i will get baseline stats by running a TB 88 R/H kit without the cooler starting at cold and then holding at 1/4 max rpm for 45 seconds and then holding it at 1/2 max RPM (little unscientific here since i don't a tac or any way other than audible verification to estimate RPM) for 7 minutes. Then I'll hold it at 11mph in 1st (7000 rpm with my gearing), and 29mph in 3rd(7000 rpm with my gearing). Each time ill start the engine from completely cold, do the 45 seconds holding it 1/4 throttle for slight warm up, then hold it at each of those speeds for 45 seconds. I have a bicycle speedo hooked up, so keeping at constant speed will only be a matter of finding a parking lot big enough to turn at 30mph. The reason for the first and third gear testing is to just see how the oil cooler effects differ with low and higher constant speeds.
Then i will install the oil cooler and do all these tests over again.
Also, i luckily managed to get this oil cooler right as i planned to buy a 108 stroker crank to throw on the bike. So after all this testing, i will split the cases, throw in the new crank, the ATC70 transmission, and the TB HD auto clutch i plan on putting in. Then ill do all the same testing, with and without the oil cooler. Since i have the 4 speed, ill be changing the at speed tests to 13MPH in first (7000 rpm) and 27 MPH in 3rd(7000rpm again) and 36mph in 4th(again, 7000rpm).
For each of these I'll record oil, engine block, and oil-cooler fin(only for the tests with the oil cooler installed of course) temperature before and after each test, as well as record the air temperature and weather conditions.
Now comes the question section. The engine block and oil cooler fin temps are easy for me to get, i have an infrared temp sensor we use for tire temp data on the car im working on. However, the oil temp might be difficult. I am not sure we have tempertature probes for use in liquid/oil. Does anyone know if there is a cheap way to get something that will be pretty accurate at measuring oil temperatures? I was considering a good old digital thermometer like the $5 ones they sell at walgreens, but i somehow doubt they measure as high as oil temps will go accurately... Anyone have a rough estimation of how high the oil temps go on these lil bikes?
Anyways, my reason for putting in so much effort for all this is that it seems to be a controversial issue, and i have the opportunity to do some good research. So i decided to get results not just for myself, but also so that i could try and give back to the forum that i have gotten so much valuable information from.
Also, any suggestions for my testing setup? I was considering doing the testing with the cooler mounted in a different position, but it seems like that would be a large amount more work. I had planned on from mounting the oil cooler, and the secondary position would be with the oil cooler mounted on the right or left side of the bike like ive seen in a few pics of some beautiful builds. We'll see if i have time and the will power after ive finished all the rest of the testing...
Anyways, here is how i plan to run it. First, i will get baseline stats by running a TB 88 R/H kit without the cooler starting at cold and then holding at 1/4 max rpm for 45 seconds and then holding it at 1/2 max RPM (little unscientific here since i don't a tac or any way other than audible verification to estimate RPM) for 7 minutes. Then I'll hold it at 11mph in 1st (7000 rpm with my gearing), and 29mph in 3rd(7000 rpm with my gearing). Each time ill start the engine from completely cold, do the 45 seconds holding it 1/4 throttle for slight warm up, then hold it at each of those speeds for 45 seconds. I have a bicycle speedo hooked up, so keeping at constant speed will only be a matter of finding a parking lot big enough to turn at 30mph. The reason for the first and third gear testing is to just see how the oil cooler effects differ with low and higher constant speeds.
Then i will install the oil cooler and do all these tests over again.
Also, i luckily managed to get this oil cooler right as i planned to buy a 108 stroker crank to throw on the bike. So after all this testing, i will split the cases, throw in the new crank, the ATC70 transmission, and the TB HD auto clutch i plan on putting in. Then ill do all the same testing, with and without the oil cooler. Since i have the 4 speed, ill be changing the at speed tests to 13MPH in first (7000 rpm) and 27 MPH in 3rd(7000rpm again) and 36mph in 4th(again, 7000rpm).
For each of these I'll record oil, engine block, and oil-cooler fin(only for the tests with the oil cooler installed of course) temperature before and after each test, as well as record the air temperature and weather conditions.
Now comes the question section. The engine block and oil cooler fin temps are easy for me to get, i have an infrared temp sensor we use for tire temp data on the car im working on. However, the oil temp might be difficult. I am not sure we have tempertature probes for use in liquid/oil. Does anyone know if there is a cheap way to get something that will be pretty accurate at measuring oil temperatures? I was considering a good old digital thermometer like the $5 ones they sell at walgreens, but i somehow doubt they measure as high as oil temps will go accurately... Anyone have a rough estimation of how high the oil temps go on these lil bikes?
Anyways, my reason for putting in so much effort for all this is that it seems to be a controversial issue, and i have the opportunity to do some good research. So i decided to get results not just for myself, but also so that i could try and give back to the forum that i have gotten so much valuable information from.
Also, any suggestions for my testing setup? I was considering doing the testing with the cooler mounted in a different position, but it seems like that would be a large amount more work. I had planned on from mounting the oil cooler, and the secondary position would be with the oil cooler mounted on the right or left side of the bike like ive seen in a few pics of some beautiful builds. We'll see if i have time and the will power after ive finished all the rest of the testing...