Arizona Rotary Rockets

Assembly - $1000.00

This is for complete assembly including manifold, water pump, alternator, etc.
Clearance all seals, and bearings (includes removal and installation of bearings if needed)
Shot blast rotor housings and front cover.
Shot blast side housings before surfacing to remove all scale from water passages.
Re-paint side housings
All new or re-plated visible external fasteners.
All our engines look and function like brand new when completed.

Resurface Side Housings - $200.00 w/rebuild - $250.00 w/o rebuild

Housings are ground flat, and then lightly precision sanded to provide a minimum surface finish of 15rms measured across the grain.

We prefer grinding to lapping for 2 reasons.

Below is the quote from Paul Yaw of www.yawpower.com, on why we grind, not lap.

1. Grinding ensures that the opposing surfaces remain parallel. Lapping provides a flat surface, but does not have a mechanical reference to the opposing surface. Grinding involves mounting the housing to an electromagnet which is parallel to the grinding wheel travel so that dimensional accuracy is maintained.

2. A housing that is lapped mirror smooth will have little or no oil retention. This is clearly illustrated when applying assembly lube to a mirror finished housing. Rather than spreading evenly across the surface, the lube will bead up much like water on a freshly waxed car. Our process leaves some grain intact to hold oil on the surface, and the light finish lap flattens the top of the peaks ensuring that the seals have a smooth finish to ride on. This approach is more time consuming, and so more expensive, but has proven to us to give the best housing and seal wear, along with a quick break in period.

Balancing - $250.00

Our balance process includes two separate steps. First, front and rear rotors are weight balanced with in 2 to 5 grams. Once the rotors are balanced, the bob weights are made up, and the assembly is balanced using front and rear counter balance and flywheel.

Porting

Porting can vary a great deal from one motor to the next, but the prices below should give you a rough idea. The prices below also reflect intake and exhaust ports.