Harley Davidson 103 Engine Upgrades

Harley doesnt release horsepower numbers.

Harley davidson 103 engine upgrades. This Stage III Street Performance Kit combines system-matched Screamin Eagle big bore cylinders high compression pistons and performance cams and valve train components with the Original Equipment cylinder heads for a cost-effective boost. I wanted to make a video to compare both the 103CI Harley Davidson Twin Cam motor in the 2015 Road Glide against the new 107CI Milwaukee 8 motor in the 2018. Thats power and performance thatll get your attention the kind of oomph thatll have a bagger bike towing the motor home and not the other way around.

Here is a quick breakdown of Stages of performance upgrades. Harley Fast means the bike has taken in for service and been modified to be quicker than other stock hds. Those upgraded components feed air through a cast aluminum manifold into a larger 64 mm throttle body.

We chose upgrading the chassis suspension and braking first over just simply adding gobs of horsepower. Not everyone wantsneeds to be able to light the road on fire with their bike. The power increase makes the ride a bit more exciting and a lumpy idle gives your bike a nice tough note.

Build a fast reliable 110 cubic inch Twin Cam hauler without having to remove the motor from the chassis. Well we took some time and did in fact put our heads together and under much scrutiny of our editors we have listed a countdown to performance nirvana and in what order in which to do so. After stage 3 upgrade a 103 cc Harley engine will get 24 off more torques and an incredible amount of 34 of horsepower.

A full Cobra exhaust system a fuel management system and Cobras Power Flow air cleaner assembly. There is a good profitable reason for hd doing so. Hello everyone I just joined this site and have been reading through all of the forums relating to engine upgrades although Ive been riding for almost 40 years this is my first Harley it looks like the one thing most guys can agree upon is that the 103 doesnt have enough power out of the factory.

This performance upgrade will give us increased horsepower and torque. Thats a 96 or 103 Harley putting out 110-plus hp with a torque number to match or with a few quick parts substitutions bumping those numbers up into the 125 ranges torque and horsepower. Upgrading from a lower engine to 103 can cause some minimal problems if it does not meet its requirements.