(12.)The stock fuel regulator was then tapped for a fitting. The fitting will be connected to the fuel tank's boost-pressure bulkhead fitt- ing (T-fitting) with a line. Another line will connect the opposite side of the bulkhead fitting to the intake air plenum. The boost-pressure line provides positive pressure to the regulator to maintain fuel pressure at a 1:1 ratio with any increase or decrease in turbo boost pressure.
(13.)Next, the exhaust header pipe was installed. A black exhaust system was used on Jesse's bike. Other exhaust options include all chrome, and chrome and black.
(14.)The Garrett turbo unit was then attached to the exhaust and induction systems.
(15.)Once the turbo unit was fastened down, the exhaust pipe was installed to the turbo.
(16.)Two one-way billet breather valves replace the stock cylinder head vent bolts. The cylinder heads will now vent crankcase air through the two breathers.
(17.)The velocity stack was then fastened to the stock throttle body.
(18.)The velocity stack cover was installed next. The velocity stack and cover create a plenum area in the intake tract.
(19.)Finally, a Barnett MT8 clutch spring was installed to handle the engine's increased torque and horsepower.
(20.)Here is Jesse's finished Street Glide. A black Trask Bagger Turbo System was selected to match the bike's color scheme. Also available are all chrome and chrome/black systems. With the correct tools, a technically minded owner should be able to install the Trask Bagger Turbo System in six to eight hours in their home garage. Keep your eyes peeled for a full feature on this bikein an upcoming issue of our sister publication HOT BIKE BAGGERS.
(21.)Here is the dyno chart from Jesse's turboed engine. The red lines indicate the stock engine's HP and TQ curves while the blue lines represent the modified turbo engine with 8 pounds boost, stock compression ratio, stock cams and 91-octane gas. Torque peaks on the turbo engine at about 3,350 rpm (117.0 lb-ft) and horsepower (112.6) at 6,300 rpm. The turbo engine maintains at least 100 lb-ft of torque from roughly 2,700 rpm to 5,700 rpm. Note that the stock engine maxes out at only 85.9 lb-ft. of torque.