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The new VVT M8 121 has plenty of changes in the top half of the engine as well as the new VVT camshaft. Everything from the cylinders up is new. Below are a couple of pictures of the new cylinder head. The New ECM is all changed from previous models. While it looks similar on the outside the inside is another story all together. There is a new gear indicator sensor on the transmission so now it tells you what gear your in while sitting still, along with the new cam sensor in the new camshaft cover. As we get deeper into it all I will see about more pictures.
VVT works great...when it's done right. When it's done for emissions as in this case no doubt it just means a cam change is necessary. Nothing new in that respect I guess.
I seriously doubt all this new to Harley technology will do even close to 1hp per cu.in still and that's pitiful.
In fact as I understand it a 9.4% increase over the 117 which Is 94hp or .80 per cu.in.. Add another 9.5hp but 4cu.in. as well is a dismal 103 - 104hp for 121cu.in.. or .85 per.
Now factor in extra weight for all this added bs and you're !lucky to not be losing power. No thanks.
These numbers are at the crank btw..and it's still falls short of 1 per!
If a cannibal used a fork some would call that progress I guess. Fast my ***. All this bs is for one reason...emissions...they have no choice.
They shaved 30 lbs off these from their predecessors and added mor usable power, its a touring bike and a great one.. why are you trying to make it about numbers and drag times 100% of all humans would take this over your old POS twin cam all day everyday to use for its intended purpose and audience please just go rebuild a 1973 Craftsman lawnmower for your neighbor or something
Webb you are easily wowed. That's evident. Not every potential buyer is. That's also pretty obvious here by all the stage 2 or better touring bikes.
If the moco were just targeting people like like you with this new 121 CVO VVT engine, more power to you(pun intended) but that would be foolish. There are more potential buyers who are like me than you think. Personally I'm not one of them. I'm quite content embarrassing people like you foolish enough to pull up next to me at a light.with their stock M8 and give me that stupid look I've seen so many times.
The look on their faces down the road or at the next stop is priceless when they look at my bike and see the 103 still on the primary cover. That's if they stop at all. More times than not they just keep going.
Maybe next year when I retire I will tour. If and when I do I will probably trike my TC Heritage..Just as it is.. 110ft.lbs. and up from 2200 to 6000rpm. is all I need and I'm geared for it.
That's your peak torque btw. It occurs very briefly @ 3000rpm and drops like a rock on both sides. And you call that good usable power too. You'd probably **** yourself on my ancient TC.
The numbers of the Stage 3 122 are pretty close to what this 121 will be only it will hang on to the torque a little better as the peak hp will hit 500 rpm sooner tho.
The v-twin has hit the end of the road in terms of power and EPA compliance. Lest you forget you could do 80hp with a TC 103 with a good pipe and a tune. That's .77hp per cu.in.
Over 10 years later and we have an M8 121 with VVT that does a whopping .08HP per cu.in. more?
Originally Posted by mjwebb
HD Screaming eagle stage kit dyno charts..don't much matter..they run good and strong, get the job done satisfyingly for most folk.
Webb you are easily wowed. That's evident. Not every potential buyer is. That's also pretty obvious here by all the stage 2 or better touring bikes.
If the moco were just targeting people like like you with this new 121 CVO VVT engine, more power to you(pun intended) but that would be foolish. There are more potential buyers who are like me than you think. Personally I'm not one of them. I'm quite content embarrassing people like you foolish enough to pull up next to me at a light.with their stock M8 and give me that stupid look I've seen so many times.
The look on their faces down the road or at the next stop is priceless when they look at my bike and see the 103 still on the primary cover. That's if they stop at all. More times than not they just keep going.
Maybe next year when I retire I will tour. If and when I do I will probably trike my TC Heritage..Just as it is.. 110ft.lbs. and up from 2200 to 6000rpm. is all I need and I'm geared for it.
That's your peak torque btw. It occurs very briefly @ 3000rpm and drops like a rock on both sides. And you call that good usable power too. You'd probably **** yourself on my ancient TC.
The numbers of the Stage 3 122 are pretty close to what this 121 will be only it will hang on to the torque a little better as the peak hp will hit 500 rpm sooner tho.
The v-twin has hit the end of the road in terms of power and EPA compliance. Lest you forget you could do 80hp with a TC 103 with a good pipe and a tune. That's .77hp per cu.in.
Over 10 years later and we have an M8 121 with VVT that does a whopping .08HP per cu.in. more?
Webb you are easily wowed. That's evident. Not every potential buyer is. That's also pretty obvious here by all the stage 2 or better touring bikes.
If the moco were just targeting people like like you with this new 121 CVO VVT engine, more power to you(pun intended) but that would be foolish. There are more potential buyers who are like me than you think. Personally I'm not one of them. I'm quite content embarrassing people like you foolish enough to pull up next to me at a light.with their stock M8 and give me that stupid look I've seen so many times.
The look on their faces down the road or at the next stop is priceless when they look at my bike and see the 103 still on the primary cover. That's if they stop at all. More times than not they just keep going.
Maybe next year when I retire I will tour. If and when I do I will probably trike my TC Heritage..Just as it is.. 110ft.lbs. and up from 2200 to 6000rpm. is all I need and I'm geared for it.
That's your peak torque btw. It occurs very briefly @ 3000rpm and drops like a rock on both sides. And you call that good usable power too. You'd probably **** yourself on my ancient TC.
The numbers of the Stage 3 122 are pretty close to what this 121 will be only it will hang on to the torque a little better as the peak hp will hit 500 rpm sooner tho.
The v-twin has hit the end of the road in terms of power and EPA compliance. Lest you forget you could do 80hp with a TC 103 with a good pipe and a tune. That's .77hp per cu.in.
Over 10 years later and we have an M8 121 with VVT that does a whopping .08HP per cu.in. more?
...Aaaaannnd the resident ****ing douchebag ruins yet another thread, for no reason at all.
GO AWAY.
Oh, and if you ever do bring your little piece of **** west...I'm your Huckleberry
I really like everything I’ve seen on these new touring rigs incl all the design changes. With my minimal knowledge of this vvt set up, are cam upgrades and tuning capabilities coming soon? I’d assume the current M8 cams need redesigned. Any insight here on what motor upgrades are on the way?
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2023.5 CVO 121 changes
All this bs is for one reason...emissions...they have no choice. 
