Скачать с ютуб Mike Alessi's Yamaha YZ134 Two Stroke TESTED - Motocross Action Magazine в хорошем качестве

Mike Alessi's Yamaha YZ134 Two Stroke TESTED - Motocross Action Magazine

#motocross #dirtbike #twostroke #motorcycle The idea for Mike Alessi to race more two-stroke races came after Mike raced the ESR-built Yamaha YZ325 two-stroke at the Monster Energy Cup in 2019. But, for most two-stroke racers, the 125 class is the high-profile prize to be sought after. Luckily for Mike, his personal 125 two-stroke revival was happening simultaneously with the boom of 125-only racing. Yes, Glen Helen’s World Two-Stroke Championship has been running as the premier two-stroke race since 2010, but now there has been a boom in two-stroke-only races, like the Red Bull Straight Rhythm, Pasha 125 Open series and Washougal Dream Race. Mike decided to set his eyes on more two-stroke racing in partial retirement, and for that he needed a YZ125 to pair with his ESR YZ325.Chad Braun at XPR Motorsports has a working relationship with the Alessis, since he builds all of the CRF450 race engines for Tony Alessi’s MotoConcepts Honda team. Mike Alessi had worked with Chad to make his YZ125 engine race-ready and asked Chad to help turn his YZ125 into a YZ150. Both XPR and Mike felt that a Yamaha 150 would give up too much power on the top end, and they landed on 134cc for the race-engine spec. Chad made the cylinder 2mm bigger and upped the internal volume to 134 cubic centimeters. VHM makes interchangeable combustion chamber domes for the head, but instead of using one of its spec domes, XPR requested a blank insert from VHM, which they custom ported and matched to a 56mm Wiseco piston. On the bottom end, the crank and the cases were built by Belgian engineer Dirk Vansummeren of DVS Racingworks. Mike Alessi used a DEP pipe and silencer and a full Rekluse TorqueDrive clutch. Mike kept the carburetor and ECU stock while using VForce4 reeds. For fuel, Mike uses VP MRX02 cut with VP C15. Finally, after learning all about the YZ134, it was time for the MXA test riders to hit the track. The first comments we got were, “It feels like a factory two-stroke with more bottom end,” and “This bike has a major personality and it wants you to go faster.” The MXA wrecking crew test riders still have our Pro Circuit-built Ryan Villopoto-replica YZ125 engine, and for some of our test riders, that was the best 125 they had ever ridden. The Ryan Villopoto-spec’ed engine brought our stock YZ125 up from 33.53 horsepower to 38.32 horsepower. It was amazing. But, when the same testers jumped on Alessi’s YZ134, which was recorded at 42.0 horsepower on the XPR’s dyno, they were blown away and quickly had a new favorite; however, it wasn’t an apples-to-apples comparison since the displacement had been increased significantly on Alessi’s bike. It was helpful in making us realize how great Mike Alessi’s XPR-built YZ134 really was. Subscribe to Motocross Action: https://hi-torque.com/product/subscri... Follow Motocross Action:    / @motocrossaction   Motocross Action Website: http://www.motocrossactionmag.com/ Motocross Action Facebook: https://www.facebook.com/pages/Motocr... Motocross Action Twitter:   / mxaction   Motocross Action Instagram:   / motocrossactionmag