COMPOUND SOUND LLC SYMPHONY OF PRECISION 71 YAMAHA 360 73 YAMAHA RD350 74 HONDA CB200 79 KAWASAKI KZ400 80 81 HONDA CB750 83 KAWASAKI KZ440 86 HONDA NB50 AERO VINTAGE MOTORCYCLE REVIEW COAST ROAD COMMUNICATIONS

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YAMAHA RT1 B 360 PARTS FROM COMPOUND SOUND ON EBAY

1971 YAMAHA RT1 B BUNDLE

CYLINDER AND CYLINDER HEAD

1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 rings frozen in place piston has some galling.

1971 yamaha RT1 cylinder head 275-11111-00-00


17 LBS 8 OZ

11 x 11 x 10


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

If you want to see more pictures, let us know. Because this is a bundle of parts, we have more detail shots that don’t fit into the ebay 12 photo limit per listing.

Cylinder has been bored .75 oversize OS, but piston must have seized at some point, because there is galling on the piston and the rings are tightly fixed into piston. There is also damage to the cylinder wall. Look at the pictures closely to see those details. The cylinder will definitely need to be rebored a larger oversize. The piston is probably junk, but it is included in the package as reference as it clearly has .75 stamped on it. It also shows the type of replacement piston you will need for this piston port two-stroke engine.

The cylinder intake and exhaust ports are clean and smooth and original. Ports have not been modified. The intake port mating surface is good and threads appear clean. The exhaust port has solid studs with good threads. Cylinder head studs also have good threads.

On cylinder and cylinder head, paint has been worn off in most places, and there is some aluminum corrosion present.

Cylinder head has all fins intact with no breakage. Dual spark plug holes have good threads. Combustion chamber area is clean and smooth with no damage.

$155 PLUS SHIPPING

1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 2 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 3 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 4 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 5 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 6 1971 yamaha RT1 cylinder head 275-11111-00-00 1971 yamaha RT1 cylinder head 275-11111-00-00 2 1971 yamaha RT1 cylinder head 275-11111-00-00 3 1971 yamaha RT1 cylinder head 275-11111-00-00 4 1971 yamaha RT1 cylinder head 275-11111-00-00 5 1971 yamaha RT1 B cylinder some wear 275-11311-01-00 and yamaha piston .75 oversize OS 275-11637-00-00 7

1971 YAMAHA RT1 B BUNDLE

RIGHT CRANKCASE COVER WITH OIL PUMP COVER, LEFT CRANKCASE COVER

1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover

1971 yamaha RT1 left crankcase cover 233-15411-00-00 291-15411-00-00


4 LBS 8 OZ

12 X 12 X 8


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

If you want to see more pictures, let us know. Because this is a bundle of parts, we have more detail shots that don’t fit into the ebay 12 photo limit per listing.

Aluminum corrosion is present on all of these cases. Minor scuffs and dings here and there. Kick crank boss has a chip missing on the exterior rim of the boss, but it appears kick crank oil seal can seat properly. See picture close-up for detail.

Oil fill threads look good, and cover mating surfaces appear to be straight and flat for good seal against crankcase gaskets.


$125 PLUS SHIPPING

1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 2 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 3 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 4 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 5 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 7 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 8 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 7 1971 yamaha RT1 right crankcase cover 233-15431-00-00 291-15431-01-00 with oil pump cover 233-15416-00-00 291-15416-00-00 right side engine cover 9 1971 yamaha RT1 left crankcase cover 233-15411-00-00 291-15411-00-00 1971 yamaha RT1 left crankcase cover 233-15411-00-00 291-15411-00-00 2 1971 yamaha RT1 left crankcase cover 233-15411-00-00 291-15411-00-00 3

1971 YAMAHA RT1 B BUNDLE

CLUTCH ASSEMBLY  / BASKET AND GEAR, MESHING PRIMARY GEAR, CLUTCH BOSS HUB, THRUST PLATE, PLATE WASHERS, SPACER, BEARING, NUTS, COLLAR, STEEL PLATES, PRESSURE PLATE AND COMPRESSION SPRINGS, RUBBER CUSHION RINGS

1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00

1971 yamaha RT1 primary drive gear 214-16111-00-00 R-type circlip 93420-72023-00 nut 90170-18089-00

1971 yamaha RT1 clutch plate 168-16325-00-00 42.00

1971 yamaha RT1 clutch plate cushion ring  168-16367-00-00

1971 yamaha RT1 clutch pressure plate 214-16351-00-00 special shape screw 90149-05147-00 compression spring 90501-20122-00


8 LBS 10 OZ

12 X 9 X 7


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

If you want to see more pictures, let us know. Because this is a bundle of parts, we have more detail shots that don’t fit into the ebay 12 photo limit per listing.

Primary gear is included in this clutch listing as it meshes directly with clutch basket assembly, and the two gears work together.

Clutch parts all clean and usable. Rubber cushion rings are included, but these rubber parts are close to 50 years old. Even though they are intact and still pliable rubber, they may or may not survive long-term. Therefore, this set of rubber clutch cushions is included free of charge.


$105 PLUS SHIPPING

1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 2 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 3 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 4 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 5 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 6 1971 yamaha RT1 clutch assembly basket 275-16301-00-00 boss hub 214-16371-02-00 thrust plate 170-16164-00-00 20.00 spacer 214-16181-00-00 plate washer 90201-252K4-00 8.00 flat bearing #41 93341-23307-00 7 1971 yamaha RT1 clutch pressure plate 214-16351-00-00 special shape screw 90149-05147-00 compression spring 90501-20122-00 1971 yamaha RT1 primary drive gear 214-16111-00-00 R-type circlip 93420-72023-00 nut 90170-18089-00 1971 yamaha RT1 clutch plate 168-16325-00-00 42.00 1971 yamaha RT1 clutch plate 168-16325-00-00 42.00 2 1971 yamaha RT1 clutch plate cushion ring  168-16367-00-00

1971 YAMAHA RT1 B BUNDLE

TRANSMISSION COUNTERSHAFT DRIVE SHAFT AND GEARS, MAIN SHAFT AND GEARS

1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651

1971 yamaha RT1 mainshaft main axle 214-17411-11-00 kick pinion gear 214-15631-00-00 4th pinion 214-17141-11-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 2nd pinion 214-17121-10-00 2


6 LBS 8 OZ

12 X 9 X 7


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

All gears, dogs, shafts, splines and threads look good. Bearings may need to be renewed.


$95 PLUS SHIPPING

1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651 1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651 2 1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651 3 1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651 4 1971 yamaha RT1 drive axle countershaft 214-17421-00-00 2nd gear 214-17221-10-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 4th gear 214-17241-10-00 1st gear 38T 214-17211-10-00 kick gear 23T 275-15651 5 1971 yamaha RT1 mainshaft main axle 214-17411-11-00 kick pinion gear 214-15631-00-00 4th pinion 214-17141-11-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 2nd pinion 214-17121-10-00 2 1971 yamaha RT1 mainshaft main axle 214-17411-11-00 kick pinion gear 214-15631-00-00 4th pinion 214-17141-11-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 2nd pinion 214-17121-10-00 3 1971 yamaha RT1 mainshaft main axle 214-17411-11-00 kick pinion gear 214-15631-00-00 4th pinion 214-17141-11-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 2nd pinion 214-17121-10-00 4 1971 yamaha RT1 mainshaft main axle 214-17411-11-00 kick pinion gear 214-15631-00-00 4th pinion 214-17141-11-00 3rd pinion 275-17131-12-00 3rd gear 214-17231-10-00 2nd pinion 214-17121-10-00 5

1971 YAMAHA RT1 B BUNDLE

SHIFT CAM / DRUM, SHIFT FORKS, GUIDE BAR, SHIFT SHAFT, LEVER

1971 yamaha RT1 shift cam 214-18541-02-00 shift fork 214-18511-00-00

1971 yamaha RT1 shift fork 214-18512-00-00 shift fork 214-18513-00-00 shift fork guide bar 214-18531-00-00

1971 yamaha RT1 shift shaft 214-18125-01-00 shift lever 214-18121-01-00

1971 yamaha RT1 gear shift bracket 214-18128-00-00 shift lever 4 214-18152-00-00 shift lever 3 214-18151-00-00 torsion spring 90508-08007-00 214-18123-00 shift cam guide 214-18179-00-00


3 LBS 14 OZ

12 X 9 X 7


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

Shift forks are all straight, and slide along the shift cam and guide bar smoothly. The shift shaft has some rust pitting near the left side spline end. See photo detail.


$85 PLUS SHIPPING

1971 yamaha RT1 shift cam 214-18541-02-00 shift fork 214-18511-00-00 1971 yamaha RT1 shift cam 214-18541-02-00 shift fork 214-18511-00-00 2 1971 yamaha RT1 shift cam 214-18541-02-00 shift fork 214-18511-00-00 3 1971 yamaha RT1 shift cam 214-18541-02-00 shift fork 214-18511-00-00 1971 yamaha RT1 shift fork 214-18512-00-00 shift fork 214-18513-00-00 shift fork guide bar 214-18531-00-00 1971 yamaha RT1 shift fork 214-18512-00-00 shift fork 214-18513-00-00 shift fork guide bar 214-18531-00-00 2 1971 yamaha RT1 shift fork 214-18512-00-00 shift fork 214-18513-00-00 shift fork guide bar 214-18531-00-00 1971 yamaha RT1 shift shaft 214-18125-01-00 shift lever 214-18121-01-00 1971 yamaha RT1 shift shaft 214-18125-01-00 shift lever 214-18121-01-00 2 1971 yamaha RT1 shift shaft 214-18125-01-00 shift lever 214-18121-01-00 3 1971 yamaha RT1 shift shaft 214-18125-01-00 shift lever 214-18121-01-00 4 1971 yamaha RT1 gear shift bracket 214-18128-00-00 shift lever 4 214-18152-00-00 shift lever 3 214-18151-00-00 torsion spring 90508-08007-00 214-18123-00 shift cam guide 214-18179-00-00

1971 YAMAHA RT1 B OIL PUMP ASSEMBLY

1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00


1 LB 8 OZ

11 x 9 x 7


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

Pump is untested. Possibly for parts only. See photos for all details.


$45 PLUS SHIPPING

1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 2 1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 3 1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 4 1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 5 1971 yamaha RT1 oil pump assembly assy 275-13101-03-00 worm shaft 275-13175-01-00 18.00 pump drive gear 214-13178-01-00 delivery pipe banjo 214-13162-01-00 26.00 6

1971 YAMAHA RT1 B DECOMPRESSION VALVE

1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00


5 OZ

6 X 4 X 2


Parts taken from 1971 Yamaha RT1 B 360, engine number RT1-23521 with an unknown number of miles.

Valve and seat are clean, and torsion spring is strong, so valve operates as intended. A previous owner has apparently used some pliers to misshape the cable holder and dcomp lever.


$65 PLUS SHIPPING

1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00 1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00 2 1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00 3 1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00 4 1971 yamaha RT1 DCOMP decompression valve 812-12281-00-00 bracket 275-12283-00-00 plate  275-12279-00-00 cable holder 812-12273-00-00 dcomp lever 275-12282-01-00 torsion spring 90508-10183-00 clevis pin 90240-03002-00 5