.
I
RS600D cylinder head has more finning area than stock XL600 head; dual
exhaust ports are retained in race version.
TT engine kit increases RS600D bore from 92 to 100mm and displacement from 498cc to 689cc. Camshaft and gaskets are included.
RS600D p istons are forgings made in Japan by ART and carry three rings.
On left is 100mm 689cc piston; on right is 92mm 498cc piston.
Cutaway view shows the details of the RS500D engine and o iling system .
It's based on the XL600 RFVC engine with radially-positioned va lv es .
Honda 500
Two views of the RS600D flywheel, with extra weight added by welding
on a steel cover. Heavy flywheel makes engine more tractable for controllable slides and strong drives off comers.
Engine type .. . . . . . . A ir -cooled
SOHCsingle
Bore x stroke
92x75mm
Displacement
498cc
Compression ratio
11 .8:1
40mm Mikuni
Carburetion
54.2 bhp @
Horsepower
8250 rpm
Torque
39.8 lb.-ft. @
6000 rpm
Valves per cylinder
4
36mm
Intake valve size
Exhaust valve size
31mm
Intake lift . . . . . . .... .. • 9.5mm
Exhaust lift
9.5mm
45 -50 °
Intake valve timing
Exhaust valve t iming
35-60 °
(mesuring pt .]
1mm
Ignition
CO l
Lubrica tion
Dry sump
Redline
9000 rp m
Gear ratios
Primary
, 2.188:1
Final
3.643:1 ·
5th
0.840:1
4th
1 .000:1
3rd
1 .250:1
2nd
1.647:1
2 .385:1
1st
· Geared for Houston TT
Honda 600
Engine type . . . . . . • . Air-cooled
SOHC single
Bore x stroke . . . . " 100x75mm
Displacement .. . . . . .. . • 589cc
Compression ratio
11 .8 :1
Carburetion
40mm Mikuni
Horsepower
59.2 bhp @
8000 rpm
Torque
44.3 lb.-ft. @
5000 rpm
Valves per cylinder . . . . . . • . .. 4
36mm
Intake valve siZe
Exhaust valve size
31 mm
Intake lift
10mm
Exhaust lift
9 .5mm
Intake valve timing .•• •. 36-65°
Exhaust valve timing
33.562.5°
(measuring pt.)
1mm
Ignition
COl
Lubrication .. . .. • . .. . Dry sump
Redline
9000 rpm
Gear ratios
Primary
2.188:1
Final
3 .643:1·
5th
0.840:1
4th . . • . . . . .. .... . . . 1.000:1
3rd .. . . • . ..... .. .. . 1.250:1
2nd
1.647:1
1st
2 .385:1
·Geared for Houston TT
17
