Topic: Care for a 215 ci v-twin?

[Laminar]

He claims that it's accurately counterbalanced. I'd be interested to see how that plays out in real life.

[HavocTurbo]

I bet it's as smooth as a hard tail going down a washboard.

You is a Harley guy..

OOOH!!! Just because I own one doesn't mean I AM one. I refuse to set foot in a HD dealership if I don't have to. Bunch of yuppy garbage going on in those.

[754]

Heyyy, I have not been in a Honda shop in ten years either.. , but I am going to need parts soon..

 I cant wait for the single version to come out for my dirt bike.. It will roostertail a bit everytime it fires, idling along in 1st.. heh..heh.

[HavocTurbo]

Oh man... how big do you think the clutch has to be to get smooth operation?

[Laminar]

300 horsepower and 300 pound feet of torque, estimated.

After some consideration, I'll believe this when I see the dyno sheet.

Nissan's 350z has a 6 cylinder 3.5 liter engine that puts out 306 hp @ 6800 rpm and 268 lb-ft @ 4800 rpm.

Honda's 1800cc V-Twin makes 106hp/120tq. He has less than twice that displacement but expects nearly triple the horsepower.

I'd like to believe that some guy using his home computer could design a 2 cylinder air-cooled engine that could beat these numbers but, like I said, I'll believe it when I see it.

[Ecosse]

300 horsepower and 300 pound feet of torque, estimated.

After some consideration, I'll believe this when I see the dyno sheet.

Nissan's 350z has a 6 cylinder 3.5 liter engine that puts out 306 hp @ 6800 rpm and 268 lb-ft @ 4800 rpm.

Honda's 1800cc V-Twin makes 106hp/120tq. He has less than twice that displacement but expects nearly triple the horsepower.

I'd like to believe that some guy using his home computer could design a 2 cylinder air-cooled engine that could beat these numbers but, like I said, I'll believe it when I see it.

i'm with ya on the proof/pudding dyno test. and generally speaking i agree the estimates seem optimistic, but just re-reading a motorcyclist mag from '08 and the new 'star' v-max makes just about 200 hp from just under 1700 cc's. must be to push all that ugly around.  


wow, i'm t.o.p. and 2888 posts!   i rock.

[tramp]

put that motor on two wheels and meet me at the bonnyville salt flats

[Laminar]

put that motor on two wheels and meet me at the bonnyville salt flats

Eh...a turbo-charged 'Busa can put out twice that engine's theoretical horsepower and still weigh less.

[HavocTurbo]

put that motor on two wheels and meet me at the bonnyville salt flats

Eh...a turbo-charged 'Busa can put out twice that engine's theoretical horsepower and still weigh less.

I agree.

Pretty much any modern sportbike engine over 1000cc can achieve 300 hp. ZX12, Busa, ZX14, GSXR-1000, ZX10, CBR1100XX, CBR1000RR

With either supercharging or turbocharging it only adds about 20lbs depending on the manufacturer and if you get everything tuned right you can achieve waaaay more than 300hp. Now torque might not come close but HP would be off the scale.

[754]

If he wanted to have way less torque, he COULD HAVE used a four..

 Oh my bad

 a Thousand people already did that, guess it aint new..




 I aways get this feeling that(many) 4 cyl lovers often miss the concept of what torque can do to even out a lower HP figure..

 There is a single here in town with around a 120hp, that does over 160mph..


 When they claim HUGE torque, I asked them how fast they think they can do the 1/4 mile using only 1 gear.. There is no shortage of twins that could run an 8sec single gear 1/4,, and I am talking in the late eighties..

[HavocTurbo]

If he wanted to have way less torque, he COULD HAVE used a four..

 Oh my bad

 a Thousand people already did that, guess it aint new..




 I aways get this feeling that(many) 4 cyl lovers often miss the concept of what torque can do to even out a lower HP figure..

 There is a single here in town with around a 120hp, that does over 160mph..


 When they claim HUGE torque, I asked them how fast they think they can do the 1/4 mile using only 1 gear.. There is no shortage of twins that could run an 8sec single gear 1/4,, and I am talking in the late eighties..

Thank you sir. I had forgotten about the gigantic torque rating this might and quite possibly WILL have.

Would be a marvel in and of itself.

[Ecosse]

as a child weened on big blocks i can attest to torque. 

ford's gt-40s out ran the ferraris partly because the less stressed 427s (and 289) just lumped along while the italian 12s had to really twist. this twin's claimed torque will be 300. at what rpm? lower than the hp rpm of course.

 

[754]

I would not be surprised if it had  well over 200 ft lbs at 3000 RPM or less.... man would that be cool..

[Laminar]

as a child weened on big blocks i can attest to torque.  

ford's gt-40s out ran the ferraris partly because the less stressed 427s (and 289) just lumped along while the italian 12s had to really twist. this twin's claimed torque will be 300. at what rpm? lower than the hp rpm of course.

IIRC, his site claimed 300hp@6000 and 300tq@5000.
I'll believe it when I see it. Also, this:

[754]

My junk computer decided it no longer wants to view Video.
 
 What kind of Busa?
 there was  2 situp Busas at Bub, that ran over 240mph, one is from Van BC I think..

 Thet would easily be over 250 on  a good surface at lower elevation..

[Laminar]

636whp, 260mph.

[Ecosse]

cripes, those things are insane in stock form! i think they're ('busas) ugly as hell but speed trumps that.

something occurred to me earlier in this discussion; this is more than just about peak output. the one whose turned on by this v twin is gonna likely be less horned up about a screaming 4 turbo. yeah, it's a generalization but there's truth in it.

kinda like someone dumping bucket loads of cash into a 35 year old bike just to go 3/4 as fast as a newer bike for half the cost.

[Laminar]

kinda like someone dumping bucket loads of cash into a 35 year old bike just to go 3/4 as fast as a newer bike for half the cost.

Oops!  

[754]

lets just say that;
 Some of us have discovered that having a bit of torque with a 2valve four in the 3-7K range, is used a bit more often  (and fun)than  an engine that has to turn 11 -17 K range to keep up with the Status Quo.

 Some of us just want to ride down the road, not use up the World RPM supply..

[Retro Rocket]

Amen to that 754. I am building my 1000cc Honda 750/4 as a torque monster, way more fun on the street and i'm getting too old for sky high revs.....

Mick

[Laminar]

lets just say that;
 Some of us have discovered that having a bit of torque with a 2valve four in the 3-7K range, is used a bit more often  (and fun)than  an engine that has to turn 11 -17 K range to keep up with the Status Quo.

 Some of us just want to ride down the road, not use up the World RPM supply..

Agreed. My Nighthawk 550 has an okay midrange, but it really screams at about 9000rpm. I really appreciate the broader powerband of my CB550.

[HondaMan]

*choke* 

How long, do you suppose, before R/C comes out with the Big Bore kit for it?
 

[Ecosse]

*choke* 

How long, do you suppose, before R/C comes out with the Big Bore kit for it?
 

i know what ya mean; "only" 3500 cc's? why, real men have nothing less than 3600, 3800, 4000 cc's! 

on the topic of other applications for this big lump...

[razor02097]

Oh yeah?  well that's only 3.5 liters  My Jeep is 4!.......but it doesn't have 300 horsepower.... But I have 4 more cylinders! 

[Laminar]

Oh yeah?  well that's only 3.5 liters  My Jeep is 4!.......but it doesn't have 300 horsepower.... But I have 4 more cylinders! 

Also, your engine actually exists.