RB Racing Harley Turbos

TC88: Doc Sweeney: "Trip done: 5950 miles 28 States in 9 days. Bike performed well"

Doc Sweeney and his TC88 Turbo on a marathon 28 state run. Genuine Pinto gas tank along for the ride. "And miles to go before I sleep". Doc Sweeney covered 4500 miles in the first week.."running fine". Next up...a R1200GS BMW and off to Alaska...all 50 states. The TC88 was shipped in from Hawaii. All 50 States.

Intercooler Fabrication

Here we are welding up a 300+ HP HD Turbo Intercooler after machining and prepping the parts for it. Air enters and exits at the larger part of the tapered end caps. After this the intercooler goes for ceramic coating. This chews up a couple of days off and on. Expensive.

The intercoolers are sized to drop the inlet charge temperature closer to ambient i.e. if the charge temperature pre-intercooler is 150F and the outside air temperature is 80F and the bike is moving at cruising speed and then under acceleration, at say 8 PSI, then the inlet temperature will be close to the ambient 80F.

Various spigots for turbo connector hoses..EVOs, Twin Cams, OEM EFI systems, Cosworth Pectel FBW systems...For our intercoolers and plenum chambers. Does get a bit complicated, but with specialization and the intended uses, it always does.

Genuine Garrett Turbo.... Raw Castings

Start out with a genuine ceramic ball bearing Garrett Turbo...Add custom housings and you are at $1,500.00 before we start modifying things for a Harley V-Twin.

They just don't fit optimally the way the come...so we have to do surgery.

We use genuine Garrett Ceramic Bearing 360 HP Turbochargers. These come in as raw, machined castings in iron and aluminum. We then modify the compressor, exhaust housing and the turbo center section with machining. welding, sanding, and bead blasting operations. The parts are then ceramic coated for corrosion protection, heat retention, and heat dispersion. With more that 25 years going to the Bonneville salt flats, we know how importatnt anti-corrosion coatings are...not to mention operation in the real world.

Then there are the 38 years of previous fixtures dating back to Shovelheads and parts which have since been discarded. Gets expensive. Thousands of man-hours.

Many Hours Later..Orca Turbo Pod

Cutting, machining, welding, anodizing, water jet cutting, ceramic coating, fixturing and assembly operations...It is no longer a $1,500.00 turbocharger but an Orca Turbo Pod that will go past 300hp and 25 psi of boost. Whatever it takes to make your 850lb Harley Dresser move. Past 200hp @12 psi. Dial the boost from your handlebar when you are riding.

On a Twin Cam 95" the turbo puts out about 165hp and 164 ft/lbs torque @ 9 PSI of Boost.

Annealed Copper Turbo Gaskets

Cherry Red with torch then drop in cold water. Turns copper into a soft condition. We anneal all our turbo and wastegate gaskets. No goo or silicone.

Wastegate Testing

With three regulators we test Boost Pressure, Exhaust Back Pressure, Adjustable Boost 8-25 PSI, and wastegate valve sealing. Here boost is controlled by a pneumatic controller. With advanced Cosworth Electronics we can control the wastegate with Phase and Anti-Phase fast acting solenoids.

300Hp Intercoolers

RB Racing Harley Turbocharger System: Intercoolers Coated in Ceramic Black High-Emissive Coating for optimal performance and corrosion protection. You can run your big twin through the gears at low boost and about 180 Hp and the intercooler discharge temperatures will be close to ambient. We don't use small restrictive intercoolers or, even more stupidly, put the intercooler under the bike like one firm does.

Airflow in and out of the intercooler must be smooth so each of the 13 channels flows the same which is why the hats must be tapered. You cannot simply butt the turbo discharge up against the base to the intercooler as some firms do.

Front view left above. Rear view right above. The intercooler mounts securely with billet clamps to the crash bar. The intercooler is rigidly mounted and the turbocharger and turbo plenum move with the rubber mounted engine. Special flex bellows couplers (see below) connect the moving and stationary parts. Proven in years of use.

Turbo Plenum Chambers: All machined from billet and welded. Integral boost and water injection ports plus billet compressor discharge valve. No nuts, no bolts, no windows, and no blow through filter. Designed as a surge reservoir and to break up directional airflow before it enters the throttle body. We have five variations on these to cover multiple applications.

Oxide blasted and ceramic coated with a heat dispersant ceramic

To protect our Harley Turbo Intercoolers against corrosion and to dissipate heat we use special Ceramic Heat Dispersant Coatings which are applied after we fabricate and blast the parts. These coatings are impervious to carb cleaners and other chemicals as well as normal soap and water cleaning. This is not powder coating as that would be an insulator and degrade the intercoolers efficiency. Plenum chambers are also coated.

Twin Cam 88 PLenum Chamber. Optional water injection port.

Our Twin Cam 88" Road Toad in rush hour traffic in Los Angeles. There isn't much open space in L.A. like there is going up the middle of Nevada on the way to Bonneville. This gives you a brief idea of what low boost looks like on a Road Glide Twin Cam 88" with Branch O'Keefe Turbo porting and some mild SE 251 cams. 1.52 Bar is about 8 lbs of boost.

No, we did not wind it out to 140 mph, nor turn the boost up to 25 psi...not in LA traffic. Not with cameras on the freeways and pesky good-natured citizens with camera cell phones calling the police. 30 years ago we had ambulance drivers calling the cops when we zipped by them under boost...That took awhile to figure out.

A movie on a gentle cruise and acceleration at only 1.5 Bar (8 psi) we moved the camera back so you could see all the instruments. Our additional injector controller handles fuel requirements under boost. You can see it activate in the lower right hand Dual Air Fuel Ratio gauge. The topmost red l.e.d will light when the 3rd injector kicks in. For street use we like to keep EGT numbers around 1450 Deg F. The Orca Turbo Dash will also display Celsius. In this movie the Optional Priority Breather Valve has been installed.

Ordering and Payment Details

1. Turbos are only sold on a pre-paid cash basis with a Bank to Bank Transfer of funds. We provide transfer details when you decide to order the kit. Place your order online 24/7 so we have your complete particulars. No credit card sales. Order online 24/7, specify Bank to Bank Transfer, and we will provide details for Bank to Bank Transfer of funds. There is a minimum surcharge of $50.00 on all bank transfers due to bank fees which occur on both ends of the transaction. Shipping charges are paid for separately by credit card. We negotiate the best shipping prices at time of shipment.

Customer is responsible for transferring the correct amount as the sending bank will deduct fees and end up transferring less than the agreed invoice which causes delays. Note: These items are sold on a direct basis only. They are not an item sold through any form of "Distributor".

2. Mandatory Items to Order: Delphi systems must order Dual O2 Display 06-1003. You must order the Glycerin filled Max Indicating Boost Gauge 03-1013.