duk2n
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And finally someone realized what I was talking about...
big bore/stroker kit?
- Thread starter jesse096
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And finally someone realized what I was talking about...
Going to need a lot more than luck.........there is no extra meat on those cylinder sleeves..........the above pics should end this big bore mod to stock NC parts.
Cam chain is heavy duty long lasting because it is the chain out of the FITWe are NOT reopening the FIT again
PS over sizing .25mm get almost nothing as far as increased displacement ( as in not worth doing the math)
0.25mm oversize will get you 4.5cc displacement gain! That would be a big gain on a 49cc scooter, but not so much on the NC700.
Greg
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Clearly everyone is missing the TURBO option
That would be the only thing I would contemplate with the NCX, a very mild, low psi huffer (well other than nitrous, lol) as far as extra engine oomph goes. Possibly supercharging instead, but that would seem to be a bit more complex?
What about the other things that go along with power adders? Do we know for a fact if a successful big bore *was* somehow managed, that the crankshaft and con rods are up to the task? What about fueling? We know Bazzazz and Power Commander type units are hideously expensive, so of course throw that wallet emptying requirement into the mix.
Using the OEM exhaust would of course be silly, so say hello to a few more trips to the bank for a full system to be added. is the stock paper air filter good enough for more flow through it?
What about the counter balancer? Can we make sure the new bigger pistons weigh the same as the older smaller ones? Do you want a buzzy vibrating bike to go along with your ten more horsepower multi-thousand dollar hop up kit?
That would be the only thing I would contemplate with the NCX, a very mild, low psi huffer (well other than nitrous, lol) as far as extra engine oomph goes. Possibly supercharging instead, but that would seem to be a bit more complex?
What about the other things that go along with power adders? Do we know for a fact if a successful big bore *was* somehow managed, that the crankshaft and con rods are up to the task? What about fueling? We know Bazzazz and Power Commander type units are hideously expensive, so of course throw that wallet emptying requirement into the mix.
Using the OEM exhaust would of course be silly, so say hello to a few more trips to the bank for a full system to be added. is the stock paper air filter good enough for more flow through it?
What about the counter balancer? Can we make sure the new bigger pistons weigh the same as the older smaller ones? Do you want a buzzy vibrating bike to go along with your ten more horsepower multi-thousand dollar hop up kit?
showkey
Super Mods
See post 42 Greg did the math ..........no merit as far a displacement or power gain .........it can be done thats why Honda offers the part, but the only value is the engine can be rebuilt once for a piston or cylinder wall scuff (running out of oil or running no air filter) or just to fix normal wear after high mileage.
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buckshot
New Member
Clearly everyone is missing the TURBO option
That would be the only thing I would contemplate with the NCX, a very mild, low psi huffer (well other than nitrous, lol) as far as extra engine oomph goes. Possibly supercharging instead, but that would seem to be a bit more complex?
What about the other things that go along with power adders? Do we know for a fact if a successful big bore *was* somehow managed, that the crankshaft and con rods are up to the task? What about fueling? We know Bazzazz and Power Commander type units are hideously expensive, so of course throw that wallet emptying requirement into the mix.
Using the OEM exhaust would of course be silly, so say hello to a few more trips to the bank for a full system to be added. is the stock paper air filter good enough for more flow through it?
What about the counter balancer? Can we make sure the new bigger pistons weigh the same as the older smaller ones? Do you want a buzzy vibrating bike to go along with your ten more horsepower multi-thousand dollar hop up kit?
I think supercharging would be more complicated than turbocharging. You'd need to have a way to drive the charger off the engine, be it from the clutch or flywheel. Modified cases would be needed, plus a place for the charger to go. The hardest part about turbo-ing the engine (in my mind) would be getting oil to the turbo, and then routing the charged air to the intake, possibly through an intercooler. The stock airbox would then be useless, but a conical filter could just get stuck on the inlet of the turbo. I've been thinking about all of this with the turbo taking the place of the cat under the engine.
SlowSteve
New Member
But.....
It doesn't have an active MAF, and its FI, not carb.you'll get more air in but no more fuel and it'll just run badly.
Edit. Also, the engine only does 6500 and is only displacing a very small amount of exhaust fumes. It'd need to either be a tiny turbo or a fiendishly expensive hybrid with, probably, variable vanes.
Remember guys, for a couple of grand you can chop your NC in for a vstrom or the brand new MT-09, which is the same price as the NC.
It doesn't have an active MAF, and its FI, not carb.you'll get more air in but no more fuel and it'll just run badly.
Edit. Also, the engine only does 6500 and is only displacing a very small amount of exhaust fumes. It'd need to either be a tiny turbo or a fiendishly expensive hybrid with, probably, variable vanes.
Remember guys, for a couple of grand you can chop your NC in for a vstrom or the brand new MT-09, which is the same price as the NC.
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Everybody is missing the obvious... Nitrous oxide!
Same as the Volkswagen water boxer in the 80's Vanagon. Same result.
Same as the Volkswagen water boxer in the 80's Vanagon. Same result.
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Conventional wisdom has always been to place the turbo/s as close to the exhaust port for max efficiency, but over the last few years I have seen all manner of placements quite a ways away, for the sake of better fitment. I think in a very low psi application, it wouldn't be too critical if the turbo ended up being put in an alternative locale. Not saying I know if or where a "better" spot would be of course, just musing. Say removal of the airbox entirely might open up a good place?
Many moons ago there was a cool supercharger kit available for an 1100 or 1200 Goldwing, and I have seen a neat one for the VFR 800 Interceptor. The difficulties in placing a belt driven charger with a modified engine side case might not be out of the picture?
Having some braided stainless oil lines routed to the unit I can't see as being impossible, and in all honesty, I think an intercooler might be a bit superfluous, if we are only talking like 5-8 psi kinda deal. Now being a math 'tard, I have no idea what a 5-8 psi 'charger of either type would translate to in real life for a noticeable feel to make it worthwhile. "worthwhile" being of course a hugely arguable term, in this fantasy lol.
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A Bazzazz or Power Commander or Megasquirt would address this.
As with anything weird humans do, it's not a matter of: "but you could just do this", when they want to do something completely irrational; but the coolest results come from: "you did WHAT, with WHAT?!!?"
Granted it was all of Honda's might that they made my CX500Turbo, but it was claimed impossible to get a small displacement twin to even work at all. There are places on the 'net that have some guy who turbo'd a WR250 single, and many more other people's small cc size single cyl motorbikes.
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buckshot
New Member
You're right about turbo placement, there are all kinds of automotive turbo kits that place the turbo(s) behind the rear axle of the vehicles. But then miles of plumbing are needed. I've seen this done on Tacomas and 'Vettes, talk about crazy power and a wicked sound. The turbo on my truck sits right at the back of the valley, which kind of makes up-pipe replacement a bit of a b!%@h. Just ask my transmission guy...
A little, tiny turbo like what was/is on that WR would be amazing on this bike. If it spooled around 3k that would be perfect. I'll have to look at my manual and see if there is any decent spot to grab oil from, unless there are turbos out there that have their own oil. Maybe some sort of electric supercharger is the answer.
A little, tiny turbo like what was/is on that WR would be amazing on this bike. If it spooled around 3k that would be perfect. I'll have to look at my manual and see if there is any decent spot to grab oil from, unless there are turbos out there that have their own oil. Maybe some sort of electric supercharger is the answer.
Answer? I'm still wondering what the question is ???
MZ5
Well-Known Member
It's quite normal for coolant to surround cylinders on modern engines. The series of Subie motors which are prone to failure are a relatively weak open-deck design. The turbo models are semi-closed-deck, are stronger, and not particularly prone to HG failure.
Back on topic, this is one of the most comical threads on this board!
I thought open deck was the attribute we were talking about. Oh, and yes it is a funny thread. Futility is a fertile field for comedy.
n30r3l0ad3d
New Member
The only thing futile in this thread is your opinion Beemerphile, as is most often the case in most of your posts recently. But, it is what it is. You can't help but be yourself, I know.
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Let's keep it civil, gents. No personal stuff please.
JamesD
Member
All the electric supercharger's I've seen so far don't actually develop any real pressure and are a waste of money.
buckshot
New Member
I've never looked at them, but that's unfortunate to hear. I did stumble upon a company that does small, self-contained variable geometry turbos for bike/ATV/UTV engines. Aerocharger is what they are called. Cool little units.
Heavy-H
Member
Oh Boy................
JamesD
Member
The electric models I've seen are basically just fans.
Honda already tried turbo bikes and the negative effects were worse than the positive ones on a 500. On a 1000+cc bike with massive torque a turbo is much more practical. What would happen with a 700 is anyone's guess.
You'd loose a lot of the low end grunt the NC already has when taking off from a light but you'd have better acceleration to pass at 70+ mph. From a stop you'd be in the intersection at least a bike length or two before the bike would even start to pull normal unless you started revving the motor before you take off... which isn't even an option with DCT.
FWIW, I think there's opportunity for more overbore than people think.
You could certainly bump the compression ratio if you don't mind using higher octane gas.
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