How does the big Yamaha compare to the Merc? These engines are very competitive. You could cone it and with those mounts you’d have a really hot engine and have quite a few bucks in your jeans over a 300R, a few ponies short but these 250 Mercs are most likely pushing 270+ HP on a dyno. If you’re running a ProXS, you get the advantage of DTS, really competitive pricing and a stock torquemaster is a great gearcase. Bother are great and a huge improvement over stock. Hydro-Tec offers Delrin mounts, which is an incredibly durable plastic, whereas Bob’s uses a solid aluminum. And they just last longer, soft mounts wear out quickly, solid ones last. Right off the bat, you’re going to sharpen the handling and input of the steering by having solid mounts. Hydro-Tec and Bob’s Machine offer solid mounts for the 4.2 and solid mounts are possibly the simplest and most beneficial upgrade you can make to your outboard. For the Yamaha V6, 200 to 250 SHO, there are aftermarket options available to really transform this big outboard. When we are talking about taking a semi performance engine and setting it up to perform a little better we always want to look at the critical things first and to me that is the mounts and the steering. Let’s look at the 250 HPs from Merc and Yamaha and how best to set them up with the latest performance parts and options. The great thing about the 4.2 V6 platform from Yamaha is its proven mechanics and aftermarket parts availability. In the other corner, the Yamaha Vmax SHO 250 is a big seller and a really popular engine for all types of boats. Mercury Racing owns the market on high performance engines and although the 300R is such an amazing package out of the box, the 250R is often overlooked, as well as it’s sibling the 250 ProXS. Right now, there are a few really good options in the 250 HP class. I really enjoyed riding it though.Whether you have a fast single engine V hull, a bass boat or even a performance bay boat, a 250 HP covers a lot of ground while being priced very well and the ability to upgrade with aftermarket parts. (I had to sell that ZX14R cause my neck would really start hurting trying to look up/forward all the time in that sitting position. *I would really like to have a similar throttle response on this Vmax 1700, that I had on that ZX14R!!! If I could Keep the Stock Braking Compression and still gain the Instant Hard Throttle Response you all talk about. One of the things I really like about these Vmax 1700's is the Braking Compression, when I let off on the throttle how the bike slows down so quickly compared to any other bike I have ridden. It's a Fantastic Bike to ride just as it sits though. I will eventually give him a call again and see if I could get what I want out of this bike "and still leave it in stock formation" otherwise. Nash on the phone back in 2015 about the different flashes, I could not make up my mind at the time though, plus at that time, the Vmax 1700 was the most powerful Stock bike I had ever ridden. I have read about the different Nash Flash levels. Very Comfortable, I could ride all day on and not be sore. When I give my Vmax Full Throttle it feels to me like the power/speed is trying to catch up to my throttle position. It would have been So Cool if these Vmax 1700's had come stock with the 3 level adjustable power, wouldn't need the flash. Hard really to describe the power delivery on it. When that ZX was in the highest power position (I don't remember what the 3 power levels were called) it would flat out FLY!! It would Definitely beat up on any Stock Vmax 1700. That Stock ZX14R had 3 power levels the owner could adjust as needed. It was about 200lbs lighter though to if I remember correctly. That bike was Way Faster (noticeably faster anyway) in the low end than this Vmax is. *The only thing I would be interested in, with a Nash Flash is if I could get a much quicker acceleration in the low rpm range. It's like it has a delayed throttle response or something, maybe because these bikes are so heavy. Mine is a bit slow picking up speed on the low end but pulls hard and steady after the about half throttle, I am comparing it to riding a ZX14R. I like my 2017 Vmax in its stock form, Runs Perfect, no surging or anything I have read about that others have had.
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