This 1974 Bultaco Pursang 360 Mk7 for sale on Hemmings.com looks a little too nice to race following an extensive restoration.Minnesota Motorcars
Warning: Vintage dirt bikes can be habit-forming and 50-year-old Bultacos, like this 1974 Pursang 360 Mk7 for sale on Hemmings.com, are a powerful gateway drug.
While Senor Bultó’s scrappy independent motorcycle company folded decades ago, his passion lives on among Bultaco enthusiasts today. There’s a deep fanbase/knowledge base for these legendary Spanish machines, and spare parts needed to keep a Bultaco in race-, ride- or show-ready form, are still available from dealers, as well as aftermarket sources.
This restored ’74 Pursang 360 Mk7 looks too nice to get dirty and it’s a significant bike in Bultaco history. By the early to mid 1970s, the Big Four Japanese companies were in the motocross motorcycle business to stay. Honda’s Elsinore had rewritten the book, while Yamaha’s innovative Monoshock suspension foretold future single-rear-shock designs. Roger DeCoster was running roughshod over the 500cc class on a Suzuki and Kawasaki launched it’s legendary KX series with a 125, a 250 and 450 in ’74. Meanwhile Maico, Husqvarna, CZ and Penton/KTM weren’t sitting still either.
Bultaco needed a boost to keep it winning on the world MX stage and got one from a young American named Jim Pomeroy. Pomeroy was a struggling but talented privateer racer, with limited sponsorship, when he made history at age 20 by winning the 1973 Spanish 250 Grand Prix. He was the first American to grab a GP win in Europe and the first to ever score victory on a GP debut. For that historic win, in Bultaco’s home country no less, Pomeroy rode a stock 1973 Pursang 240 Mk6 (that he assembled himself) and arrived at the track without a mechanic or crew. Pomeroy’s life changed significantly after that win though. He became an overnight MX star with full-factory backing as well as Bultaco’s frontman in ads for the Pursang.
Jim Pomeroy (number 26) was virtually unknown when he won 1973 Spanish 250 Grand Prix became an overnight motocross star.Bultaco advertisement
When the ’74s Pursangs arrived, they were good enough to win races at any level. Bultaco built stout two-stroke engines, but for ’74, the Buls were lighter, thanks to a new chromoly frame and handlebars, Akront aluminum rims and alloy hubs. Suspension fore and aft across the board was via Spanish-made Betor forks and shocks. The ’74 Pursang 250 sported a blue with white-stripe paint scheme as an homage to the helmets worn by American riders, like Pomeroy.
The 1974 Bultaco lineup was lighter than ever thanks to chromoly frames and lightweight alloy wheels and hubs. The 250 sported a blue and white paint scheme modeled after the helmets worn by American riders like PomeroyBultaco advetisment
The big-bore engine in the Pursang 360 engine now displaced 352 ccs up from 326 ccs in the previous year’s Pursang 350. The size increase came primarily from a 4-mm increase in the stroke, which probably also helped the Pursang 360 deliver the strong, tractable power it was known for. The carburetor was a 36-mm Amal with a tickler for cold starts instead of choke. The tickler button would force the float down, flooding the carburetor with fuel, ensuring a rich mixture. The kick starter was on the left side and the shifter for the five-speed transmission was on the right. This particular bike has a compression release installed in the cylinder head. It’s cable operated via a short lever on the left side of the handle bar below the clutch. This is a nice addition, as these big-bore two-strokes can be hard to kick over (especially from the left side) and you need to boot them forcefully to get them started.
These bikes have their kickstarter on the left and the shifter on the right, which can take some getting used to. A cable-operated compression release (pictured to the left of the spark plug) has been installed to make the big-bore, two-stroke easier to kick over. The carburetor is a 36 mm Amal. It uses a tickler (that knob to the right of the fuel filter) for cold starts rather than a choke. Pushing the tickler forces the float open flooding the carburetor with gasoline (and dribbling gasoline oil the engine as well).Minnesota Motorcars
Aside from being light, powerful and a lot of fun to ride, Pursang 360s are visually stunning with their red/yellow and white body work against their silver frames. Someone spent a lot of time polishing this Pursang’s fork leg’s engine cases, rims and hubs, bringing back their original luster.
This Pursang 360 is so clean it’d be a shame to risk scuffing it up in vintage MX races. So, maybe this one could be for show, and you could pick up a scruffier Pursang for weekend competition? Just be careful: vintage dirt bikes can be habit-forming.
A Cycle World test rider drags the toe of his Full Bore boot while drifting the new 1974 Bultaco Pursang 360 Mk7 for the cover shot of the May issue. The magazine editors called the 360 “Bultaco’s Illegal Super light” because the stock bike’s 204.5 dry weight was under the FIM minimum weight for the 500 cc class.Cycle World
Specifications
(May 1974 Cycle World)
Original List Price: $1,395
Tire size: 3×21 (front) 4.50×18 (rear)
Engine: Two-stroke, piston port, 352cc
Bore and stroke: 83.7×64 mm
Compression: 10.5:1
Carburetor: 36 mm Amal
Ignition: Motoplat breakerless
Fuel capacity: 1.8 gallons
Horsepower: 28.55@6,500 rpm
Torque: 23.07 lb.ft. @6,500 rpm
Transmission and drive
Clutch: Mult-plate, wet
Primary drive: Twin-row chain
Final drive: Single row chain
Chassis
Wheelbase: 55 inches
Seat height: 33.5 inches
Weight: (with fuel) 212 pounds
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