Section 17 TECHNICAL DATA
Subsection 02 (GTI RFI AND GTI LE RFI MODELS)
GTI RFI AND GTI LE RFI MODELS
ENGINE GTI RFI GTI LE RFI
Engine type BOMBARDIER-ROTAX 787
Induction type Rotary valve
Type Water cooled, water injected with regulator
Water injection fitting (head) 4.0 mm (.157 in)
Water injection fitting (cone) Not applicable
Exhaust system
Water injection fitting (muffler) 4.5 mm (.177 in) 3.5 mm (.139 in)
Exhaust valve Rotax Adjustable Variable Exhaust (RAVE)
Starting system
Electric start
Fuel/oil mixture
VROI (Variable Rate Oil Injection)
Oil injection pump
Direct drivenLubrication
Oil injection type XP-S
TM
synthetic 2–stroke OR XP-S
TM
synthetic blend
Number of cylinders 2
Standard
82 mm (3.228 in)
First oversize 82.25 mm (3.238 in)Bore
Second oversize
Not applicable
Stroke 74 mm (2.91 in)
Displacement 781.6 cm (47.7 in)
Corrected compression ratio
6.0:1
Cylinder head volume
47.7 ± 0.4 cc
Cylinder head warpage (maximum)
0.05 mm (.002 in)
Piston ring type and quantity 1 semi-trapez -- 1 rectangular
New 0.40 - 0.55 mm (.016 - .022 in)
Ring end gap
Wear limit 1.00 mm (.039 in)
New 0.025 - 0.070 mm (.001 - .003 in)
Ring/piston groove
Wear limit 0.24 mm (.009 in)
New (minimum) 0.13 mm (.005 in)
Piston/cylinder wall
clearance
Wear limit 0.22 mm (.009 in)
Cylinder taper (maximum)
0.10 mm (.004 in)
Cylinder out of round (maximum)
0.08 mm (.003 in)
New 0.230 - 0.617 mm (.009 - .024 in)
Connecting rod big end
axial play
Wear limit 1.2 mm (.047 in)
Crankshaft deflection MAG: 0.050 mm (.002 in); PTO: 0.030 mm (.001 in)
Opening 147° ±5° BTDC
Rotary valve timing
Closing 63.5° ±5° ATDC
Rotary valve duration 159°
Rotary valve/cover clearance 0.25 - 0.35 mm (.010 - .014 in)
New 0.023 - 0.034 mm (.0009 - .0013 in)
Connecting rod/crankshaft
pin radial clearance
Wear limit 0.050 mm (.002 in)
New 0.003 - 0.012 mm (.00012 - .00047 in)
Connecting rod/piston pin
radial clearance
Wear limit 0.015 mm (.00059 in)
ADDITIONAL INFORMATION:
smr2004-Complete Line Up 767
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