CUSTOM YAMAHA BANSHEE PORTING SERVICES

(All services quoted for work performed on stock YAMAHA cylinders)

Traditional style porting any style [except full drag port]      $325.00

Traditional style Full Drag Port stock stroke                        $445.00

12 Port porting stock crank                                                  $445.00

12 Port Stroker crank porting (Our Most Popular Engine)   $445.00

NOTE: 12 port cylinders have 2 additional finger ports installed
on each side of main intake ports and 2 window ports machined
into liners for greater fuel atomization.  This requires additional
tig welding around both rear stud areas.

This mod smooths out the power curve from off idle through mid
rpm ranges and allows greater volume  capabilities in upper RPM
ranges.

All porting styles include complete interior and exterior cylinder
bead blasting and polished exhaust ports.
Passion Racing Engines             Tulsa, Oklahoma   

Telephone:  (918)272-5665 or (918)232-3950    

email:   passionengines@yahoo.com
When your ready for the good stuff , let our Passion
become yours
All port network and combustion
chamber configurations are  designed
and developed using the  most
advanced softwares available, these
include TSR, MOTA and Bi-Motion
TOP END OVERHAUL PACKAGE

PRECISION BORE JOB,HONE, AND CHAMFER ,
WISECO FORGED PISTONS, RINGS, PINS,CLIPS
BASE  GASKETS, REED GASKETS AND  COOL
HEAD O-RING KIT
                        $265.00
big bores slightly more, additional charges for specialty pistons
CYLINDER BORING WITH HONE AND
CHAMFER
                 $55.00 PER SET
big bores additional
  CRANKSHAFT TRUE AND WELD
                      $55.00
Make sure your crank is up to the task with precision
alignment and pin welding!
Last updated 1-7-2011
PASSION 12-PORT OEM CYLINDER PORTING
PASSION RACING OFFERS THE ONLY  PORT ,PIPE , COMBUSTION CHAMBER ,
AND INTAKE SPEC MATCHED CHEETAH CUB PACKAGES IN THE
BUSINESS...PERIOD!!   ENTIRE PACKAGE IS RESONANCE MATCHED FOR  
ABSOLUTELY THE MOST VIOLENT POWER DELIVERY POSSIBLE. ABSOLUTELY
THE BIGGEST BANG FOR THE BUCK IN BANSHEE HIGH PERFORMANCE

THIS ENGINEERING AND BUILD SERVICE IS AVAILABLE FOR ANY FORMAT 2 CYCLE ENGINE  REGARDLESS OF APPLICATION
4 CYLINDER 1414CC BANSHEE
    EXPERIMENTAL
PRECISION CASE BORING,MATCHING AND
CASE TRENCHING
DEVELOPED ON OUR OWN PIONEERED ENGINE
SOFTWARE ALSO AVAILABLE IN RESONANCE
MATCHED VERSION FOR OUR SNIPER
EXPANSION CHAMBERS
We also have the ability to engineer any design needed by our customers on
ANY 2-Cycle engine. Please email us with your situation and we will make YOU
the dominate force in your area!
WORLD CLASS COMBUSTION CHAMBER DESIGN ON OUR PIONEERED SOFTWARE