Difference between revisions of "Yamaha YZ360"

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Produced in extremely limited numbers for 1974 & 75 and very expensive at the time (US Price $1850), YZ 250-360 Yamaha's were truly 'works' bikes that you or I could actually buy. These bikes shared almost nothing with their cousins, the Yamaha MX racers. If you've never gone inside of a YZ 250 or 360 motor, you should. EVERYTHING was drilled and lightened. Gears, clutches, frames, wheels, forks, tanks, pipes, seats, air box (1 box with 2 filters, 1 behind each side cover) were all WORKS pieces. The frame is all steel (including the box swing arm), however the right side clutch case was Magnesium. The engine cases were the same as the RT3 and MX bikes. Yamaha recommended that you replace the rings after EVERY RACE. The most logical reason for this was that you could never bore the cylinder. The cylinder bolts were red (Titanium I believe). The gas tank is aluminum (mine leaked from day one). The bottom of the seat, air box and side plates were all made from fiberglass. The US version was yellow and I believe both versions came with the "detuned" 34mm Mikuni although the intake boot would allow a 38mm. John Fero rode his YZ360B at the Texas ISDE in 1975 (running in 1st place before flooding the "designed for MX" air box) and finishing 5th in front of Malcolm Smith (gaining notice by Yamaha and starting his factory career with Yamaha and Suzuki). <!-- John suggested that I ride a Monoshock YZ360B (just like his) over the 72 MX360 he had for sale that I was interested in. John also helped me jet the 38mm Mikuni that I put in my YZ360B that made it run like real WORKS bike on top, but you lose EVERYTHING on the bottom. -->
{{Motorcycle
|name            = Yamaha YZ360
|photo= 1975-Yamaha-YZ360B-White-2415-1.jpg
|aka              =
|manufacturer    = Yamaha
|parent_company  =
|production      = 74-75
|model_year      =
|predecessor      =
|successor        =
|class            =Motorcross
|engine          = 360
|bore_stroke      =
|compression      =
|top_speed        =78 mph
|power            =
|torque          =
|ignition        =
|spark_plug      = {{sparkplug|NGK B8EV}} '74-75
|battery          =
|transmission    =
|frame           =
|suspension      =
|brakes          =
|front_tire      = {{tire|3.00-21}} '74-75
|rear_tire    = {{tire|4.60-18}} '74-75
|rake_trail      =
|wheelbase        =
|length          =
|width            =
|height          =
|seat_height      =
|dry_weight      =
|wet_weight      =
|fuel_capacity    =
|oil_capacity    =
|recommended_oil= Yamalube 10w-40
|fuel_consumption =
|turning_radius  =
|related          =
|competition      =
|final_drive= {{chain|520x104}} ‘74-75<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref>
|front_sprocket= 15T ‘74-75<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref>
|rear_sprocket= 48T ‘74-75<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref>
}}


==1975 YZ360B==
The '''Yamaha YZ360''' was [[single cylinder]] 360[[cc]] offroad and [[motocross]] motorcycle produced by [[Yamaha]] 1974 and 1975.
[[Image:1975-Yamaha-YZ360B-White-2415-0.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-1.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-2.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-3.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-4.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-5.jpg|left|thumb|1975 Yamaha YZ360B in White]][[Image:1975-Yamaha-YZ360B-White-2415-6.jpg|left|thumb|1975 Yamaha YZ360B in White]]
 
==Major competitors==
*Honda
*Kawasaki
*Suzuki
==Specifications==
*360[[cc]]
*[[Piston Inlet Port]]
*5-Speed Return Shift
*Maximum Horsepower: unknown
*Spark Plug: unknown
*Tire Size
*Front: unknown
*Rear: unknown
*Color
**Fuel Tank: White with red badging
**Front Fender: White
*Engine No.: unknown
*Frame No. : unknown
*Parts Catalog No.: unknown
*Ownerfs/Shop Manual No. : unknown
==History==
Produced in extremely limited numbers and very expensive at the time (US Price $1850), YZ 250-360 Yamaha's were truly '[[works racers|works]]' bikes that you or I could actually buy.
 
It was produced in extremely limited numbers and very expensive at the time (US Price $1850), YZ 250-360 Yamaha's were truly 'works' bikes that you or I could actually buy. These bikes shared almost nothing with their cousins, the Yamaha MX racers. If you've never gone inside of a YZ 250 or 360 motor, you should. EVERYTHING was drilled and lightened. Gears, clutches, frames, wheels, forks, tanks, pipes, seats, air box (1 box with 2 filters, 1 behind each side cover) were all WORKS pieces. The frame is all steel (including the box swing arm), however the right side clutch case was Magnesium. The engine cases were the same as the RT3 and MX bikes. Yamaha recommended that you replace the rings after EVERY RACE. The most logical reason for this was that you could never bore the cylinder. The cylinder bolts were red (Titanium I believe). The gas tank is aluminum (mine leaked from day one). The bottom of the seat, air box and side plates were all made from fiberglass. The US version was yellow and I believe both versions came with the "detuned" 34mm Mikuni although the intake boot would allow a 38mm.  John Fero rode his YZ360B at the Texas ISDE in 1975 (running in 1st place before flooding the "designed for MX" air box) and finishing 5th in front of Malcolm Smith (gaining notice by Yamaha and starting his factory career with Yamaha and Suzuki).
 
<!-- John suggested that I ride a Monoshock YZ360B (just like his) over the 72 MX360 he had for sale that I was interested in. John also helped me jet the 38mm Mikuni that I put in my YZ360B that made it run like real WORKS bike on top, but you lose EVERYTHING on the bottom. -->
==1974==
*SERIAL # 432-000101 - 000631
==Photos 1975 YZ360B==
[[Image:1975-Yamaha-YZ360B-White-2415-0.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-1.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-2.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-3.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-4.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-5.jpg|left|thumb|1975 Yamaha YZ360B in White]]
[[Image:1975-Yamaha-YZ360B-White-2415-6.jpg|left|thumb|1975 Yamaha YZ360B in White]]
<br style="clear: left"/>
<br style="clear: left"/>


*SERIAL # 484-000101 - 001459
==References==
{{reflist}}


{{motorcycle-stub}}
{{template:Yamaha YZ}}
{{Yamaha}}


[[Category:Yamaha motorcycles|YZ360]]
[[Category:Yamaha motorcycles|YZ360]]
[[Category:1970s motorcycles]]
[[Category:Off-road motorcycles]]
[[Category:360cc displacement motorcycles]]
[[Category:360cc 2-stroke motorcycles]]
[[Category:Motocross motorcycles]]
[[Category:Single cylinder motorcycles]]
[[Category:Single cylinder 2-stroke motorcycles]]
[[Category:2-stroke motorcycles]]
[[Category:Piston Inlet Port motorcycles]]
[[Category:Yamaha YZ series]]

Latest revision as of 20:10, 23 November 2019

1975-Yamaha-YZ360B-White-2415-1.jpg
Yamaha YZ360
Manufacturer
Production 74-75
Class Motorcross
Engine
360
Top Speed 78 mph
Spark Plug NGK B8EV '74-75
Final Drive Chain: 520x104 ‘74-75[1]
Front Sprocket 15T ‘74-75[1]
Rear Sprocket 48T ‘74-75[1]
Front Tire 3.00-21 '74-75
Rear Tire 4.60-18 '74-75
Weight
Recommended Oil Yamalube 10w-40
Manuals Service Manual


The Yamaha YZ360 was single cylinder 360cc offroad and motocross motorcycle produced by Yamaha 1974 and 1975.

Major competitors[edit | edit source]

  • Honda
  • Kawasaki
  • Suzuki

Specifications[edit | edit source]

  • 360cc
  • Piston Inlet Port
  • 5-Speed Return Shift
  • Maximum Horsepower: unknown
  • Spark Plug: unknown
  • Tire Size
  • Front: unknown
  • Rear: unknown
  • Color
    • Fuel Tank: White with red badging
    • Front Fender: White
  • Engine No.: unknown
  • Frame No. : unknown
  • Parts Catalog No.: unknown
  • Ownerfs/Shop Manual No. : unknown

History[edit | edit source]

Produced in extremely limited numbers and very expensive at the time (US Price $1850), YZ 250-360 Yamaha's were truly 'works' bikes that you or I could actually buy.

It was produced in extremely limited numbers and very expensive at the time (US Price $1850), YZ 250-360 Yamaha's were truly 'works' bikes that you or I could actually buy. These bikes shared almost nothing with their cousins, the Yamaha MX racers. If you've never gone inside of a YZ 250 or 360 motor, you should. EVERYTHING was drilled and lightened. Gears, clutches, frames, wheels, forks, tanks, pipes, seats, air box (1 box with 2 filters, 1 behind each side cover) were all WORKS pieces. The frame is all steel (including the box swing arm), however the right side clutch case was Magnesium. The engine cases were the same as the RT3 and MX bikes. Yamaha recommended that you replace the rings after EVERY RACE. The most logical reason for this was that you could never bore the cylinder. The cylinder bolts were red (Titanium I believe). The gas tank is aluminum (mine leaked from day one). The bottom of the seat, air box and side plates were all made from fiberglass. The US version was yellow and I believe both versions came with the "detuned" 34mm Mikuni although the intake boot would allow a 38mm. John Fero rode his YZ360B at the Texas ISDE in 1975 (running in 1st place before flooding the "designed for MX" air box) and finishing 5th in front of Malcolm Smith (gaining notice by Yamaha and starting his factory career with Yamaha and Suzuki).

1974[edit | edit source]

  • SERIAL # 432-000101 - 000631

Photos 1975 YZ360B[edit | edit source]

1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White
1975 Yamaha YZ360B in White


  • SERIAL # 484-000101 - 001459

References[edit | edit source]

  1. 1.0 1.1 1.2 2019 Western Power Sports Catalog. Western Power Sports. 2019.