Has anybody installed an oil cooler on their streetglide. How difficult could this be. I am thinking of getting one, and putting it on in the near future, along with the oil temp gauge.

 

Good idea, and it's an easy install. If you're buying the HD Premium cooler find a 7/16" Allen socket before starting the job, as you'll need it for the filter adapter. Jamming two 7/16" nuts onto a long bolt will also work. There are plenty of threads on this subject here.

When you install the OTG, don't attempt to tee the sender into the cooler hose as specified by the Moco. Instead, buy a Napa #3220 x 6 x 2 (1/8"F-3/8"M) adapter and install it in the pan where it belongs. It'll give you a good reading of the oil temp in the engine, as the pan is the next step after the engine in the flow.

 

Now is there any modding needed to get it under the motor? Are the instructions detailed enough? I'm fairly handy, and willing to give it a rub, I don't want my bike shut down for too long.

 

The Harley Oil Cooler is not hard to install and it has very good instructions.

 

Get what under the motor? Nothing goes under the motor in the cooler install, at least not for an '07 or '08.

I'm describing the procedure for an '07-'08 FLH, as earlier TC's are different and I'm not familar with the procedure for them. The '09 also shows a different part number so obviously it is different in some way.

For my '07 the cooler was an easy install with nothing I would call a "mod." You will need to replace the filter mount, which means the filter will need to come out, and that is the only slightly tricky part with the odd 7/16" Allen fastener. As for instructions, mine (purchased in late '06 for my '07 bike) dictated a complex rigmarole for dealing with the VR and its wires, but none of that was necessary. It was a matter of unscrewing the two VR nuts, pulling the VR out of the way, inserting the cooler frame, and re-inserting the VR and nuts. Replace the filter adapter, attach the hoses and filter, and top-off the oil (or just change it like I did)--that's about it. It might be a one hour job, two if you're cautious and take a few beer breaks. Definitely one of the easier installs I've done and also one of the most important, IMO.

Those with TC88's and '09 bikes can chime in and describe how the procedure is different for these bikes.

 

Anyone tried a Jagg oil cooler? I'm considering one of those but also taking a look at HD's.

 

I also recommend using permatex high tack spray a gasket to hold the HD gasket in place on the adaptor during installation.



Installion of the kit is easy!

 

I have the Jagg 10 row oil cooler w/ thermostat it installs easy and works great.
I went with the Jagg because I wanted a larger cooling area.

Charlie

 

The Jagg 10-row has two rows more than the HD cooler, but doesn't come standard with a thermostat. You can mount the 10-row either low like the HD cooler or vertically on the left downtube. The latter likely won't work with lowers or air horns but IMO is a better location. Jagg claims their coolers are less restrictive than the HD Premium and I don't doubt their claim, but the HD unit works fine on my bike and keeps temps in control.
Jagg made HD coolers up until 2004, but no longer do.

I don't know if this is typical, but a friend bought a 10-row with t'stat and the t'stat wouldn't open. The second t'stat opened but wouldn't close, so he gave up and removed it. Personally, I think a t'stat is important, as you don't want to be cooling cold oil for a number of reasons. Some use a manual bypass valve that Jagg makes or a sock to keep the wind off when not needed.

 

I've read several articles by master builders and they indicate the Jagg is best, hands down. More cooling surface and less internal pressure.