Cooling My M8 Wet Head

[Cookr21]

what map are you using and have you done any other tuning since installing map. your numbers sound normal for

a tri glide or a harley in general, 230 - 250 oil temp not out of the question. coolant temps must be normal if your fans are working ( on at 90 C off @ 83C. and no HOT light on gauges. just rolling the throttle on to pass will work if you have lots of room but the engine will do better if you drop down to 5th gear to pass. cooling fans dont do much at 70 MPH. My wife got blisters on her right leg from her TG , In the process of doing mods to help it out,

BUT it is still a big air cooled engine (only the exhaust port is liquid cooled) for the most part and will put out lots of heat when worked hard and yes to me 1500 to 1800 hundred LBS climbing hills is working the motor.

Appreciate the reply Tom.

Bummer to to hear about the extreme heat you wife is experiencing. Hope you find a solution soon. I feel heat but nothing like blistering heat.

The PV is my first experience with a tuner and I have no idea what I'm doing with it. Just downloaded a user guide for it yesterday and will start digging into it. The tune I began with is the one supplied with it according to my setup. I took that tune and ran 3 or 4 auto tunes around town with the supplied tune and whatever the results of the auto tune is what I'm running. It's time I learn more on the capabilities of the PV and how it will work best for me and my setup.

Been some discussion above about checking the trike to see if any codes have been thrown. None displayed on the PV. Would the ECM on the trike store codes that the PV would not detect? Want to make sure I'm not missing something.

To me it appears that the radiators and fans are working properly. I took the front covers off to check for air flow blockage, (fin damage, excessive bugs and debri) all looked good. Fans definitely running and expelling heat from the sides of the lowers. Coolant temps go up when under load and down as expected when not under load. They appear to stay steady on the flats. Pretty much what I would expect from a liquid cooled motor.

Engine oil temp does appear to be running in a decent temp range, (highly unscientific using the thermometers I described above and had available at the time). Would like to find a better way to check oil temp with more accurate results. Any suggestions welcome?

Appreciate the responses. Keep them coming if you have more. Learning more about this trike daily. Hope to get it cooled down as much as possible. Truly enjoy the time that Laura and I spend on it.

 

[Jack Klarich]

Been some discussion above about checking the trike to see if any codes have been thrown. None displayed on the PV. Would the ECM on the trike store codes that the PV would not detect? Want to make sure I'm not missing something.

That is a very good question

I have found the PV to see a code the on board ECM scanner did not find

That said I am sure the HD digital tech scanner can find all codes ever logged on the ECM even after a soft delete JMO

 

[tom H]

Appreciate the reply Tom.

The PV is my first experience with a tuner and I have no idea what I'm doing with it. Just downloaded a user guide for it yesterday and will start digging into it. The tune I began with is the one supplied with it according to my setup. I took that tune and ran 3 or 4 auto tunes around town with the supplied tune and whatever the results of the auto tune is what I'm running. It's time I learn more on the capabilities of the PV and how it will work best for me and my setup.

Been some discussion above about checking the trike to see if any codes have been thrown. None displayed on the PV. Would the ECM on the trike store codes that the PV would not detect? Want to make sure I'm not missing something.

not real good at posting on here but here goes.

I use a daytona twin tec, wego III to set VE in map, Im using the same map I had done on my 2018 ultra due to build being similar and it was done on a dyno.

ultra is Rinehart 2 into 2 with non cat head pipe and 4.5 mufflers zippers 468 cam SE air cleaner,

triglide is same 468, fuel moto head pipe and mufflers SE air cleaner. both using power vision.



long story short VE tables were off quite a bit, rich and very lean in in the cruse area. have not even tried to use the PV tuning due to limits of stock exhaust sensors.

I did clear codes with the twin tec but did not check the PV to see if they were reading same codes, or even check to see what they were due to the fact I have just got bike back together, will check next time I do some tuning and see if they came back and are readable with both devices and if they show up on dash

( believe they were for low voltage to exhaust sensors and I have them turned off for tuning with wideband sensors)

 

[pfsorl]

Overheating on M8

You might need to check the jets that shoot oil into the bottom of the cylinders. My 18 got a brand new engine when these jets loosened and both cylinders overheated. Harley went from O-rings to gaskets and the gaskets are compressing, allowing the jets to unthread. Harley is now having them torqued to 120 ft-lbs vs the original 90. Needs a full tear down but if you still have warranty it will save your motor. I know of several motors in South Carolina where this was the problem. A buddy had identical engine and only one cylinder was overheating and burning out crank sensor. One jet had come loose.

Another thing is never ride with the fairing vents shut unless outside air temp is below 45 degrees.

 

[Jack Klarich]

You might need to check the jets that shoot oil into the bottom of the cylinders. My 18 got a brand new engine when these jets loosened and both cylinders overheated. Harley went from O-rings to gaskets and the gaskets are compressing, allowing the jets to unthread. Harley is now having them torqued to 120 ft-lbs vs the original 90. Needs a full tear down but if you still have warranty it will save your motor. I know of several motors in South Carolina where this was the problem. A buddy had identical engine and only one cylinder was overheating and burning out crank sensor. One jet had come loose.

Another thing is never ride with the fairing vents shut unless outside air temp is below 45 degrees.

I hope you mean inch pounds? Ft Lbs would be way too much for the cap screw that holds the piston cooling jets in place

 

[Capt.Bob]

You might need to check the jets that shoot oil into the bottom of the cylinders. My 18 got a brand new engine when these jets loosened and both cylinders overheated. Harley went from O-rings to gaskets and the gaskets are compressing, allowing the jets to unthread. Harley is now having them torqued to 120 ft-lbs vs the original 90. Needs a full tear down but if you still have warranty it will save your motor. I know of several motors in South Carolina where this was the problem. A buddy had identical engine and only one cylinder was overheating and burning out crank sensor. One jet had come loose.

Another thing is never ride with the fairing vents shut unless outside air temp is below 45 degrees.

Pardon me for being skeptical but this is the first I have heard of oil jets being insufficiently assembled. Who suggested to you that one "never ride with the fairing vents shut unless outside air temp is below 45 degrees"? Current and recent Tri Glides have built-in fan systems for heat issues and the M8's are "wet heads". Although the 103's and 107's tend to run on the hot side, what data would support the recommendation for the fairing vent positions and ambient temps?