KFC
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| posted on 21/7/12 at 02:03 PM |
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Has anyone put in a V4 Yamaha Vmax engine??
As above, I would ultimately like to put in a V8 but the weight puts me off a bit. I'd like to have twin exhaust with a good sounding engine,
not a 1L capacity so it would sound like a bike. The 1600cc V4 sounds good, shaft driven and with a fast sequential box! Has anyone fit one of
these?
Reverse is not a problem to sort out. Think I'll go for the electric reverse motor rather than that expensive leaky reverse gearbox.
Any comments and criticism welcom! 
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Slimy38
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| posted on 21/7/12 at 03:04 PM |
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This isn't intended as a criticism, but in general these sorts of engines aren't fitted because they're not particularly powerful or
efficient compared to the average Yamaha or Kawasaki 1 litre engine. However, I'm all for people taking a different route so I say go for
it!!
The only other thought is that a vmax as a donor can't be particularly cheap or easy to get hold of, again compared to 1 litre sportsbikes that
are ten a penny.
I quite fancied an Aprilia V twin for precisely the same reason, not the most powerful but they sound awesome on a bike so would be even better with
four wheels.
The shaft drive seems like a good start though, instead of having to muck about with flanges etc you're just mating the drive to the diff.
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kipper
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| posted on 21/7/12 at 04:02 PM |
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I don't think a V max would make a good bec but I have been looking at a BMW 6 cylinder bike that would fit the bill very nicely , It even has
shaft drive so would fit across the engine bay with 3 pipes coming out of both sides! wouldn't that sound harmonious .
Denis.
Where did that go?
<<<<
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spiderman
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| posted on 21/7/12 at 04:58 PM |
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quote:
Originally posted by Slimy38
This isn't intended as a criticism, but in general these sorts of engines aren't fitted because they're not particularly powerful or
efficient compared to the average Yamaha or Kawasaki 1 litre engine.
2012 Vmax 1600. 200 bhp @9000rpm, 123ft/lbs torque @6500rpm. How much power and torque do you get from a Yamaha or Kawasaki 1 litre?
Even a mid 80's 1200 version is 145 bhp @ 9000 rpm and 90lb/ft of torque @ 7500 rpm.
[Edited on 21/7/12 by spiderman]
Spider
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steve m
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| posted on 21/7/12 at 05:13 PM |
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Sorry to hijack, but what about goldwing 1000?
As i know were my old goldwing is, and hasnt moved since i sold it in 1989 !!
Im not interested in a stupidly fast car, just something driveable
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spiderman
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| posted on 21/7/12 at 05:36 PM |
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quote:
Originally posted by steve m
Sorry to hijack, but what about goldwing 1000?
As i know were my old goldwing is, and hasnt moved since i sold it in 1989 !!
Im not interested in a stupidly fast car, just something driveable
Only 78 bhp @ 7000rpm, 61 lb/ft torque @ 5500 rpm may be a little lacklustre for my liking, plenty of other engines which would be better.
Stuart Taylor used to fit the Honda ST 1300 Pan European motor to some of his chassis.
115 bhp @ 8000 rpm
86 lb/ft @ 6500 rpm.
Spider
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zilspeed
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| posted on 21/7/12 at 05:48 PM |
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I'm pretty certain that the direction of rotation of a shaft driven bike engine (being to the left of the driven wheel) , is the opposite of
what a car diff requires, those having the pinion on the opposite side of the crown wheel.
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PAUL FISHER
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| posted on 21/7/12 at 05:58 PM |
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This the shaft driven Honda goldwing 6 cylinder fitted in a MK
[img]
 
Rescued attachment 6 cylinder.jpg
[/img]
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liam.mccaffrey
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| posted on 21/7/12 at 06:39 PM |
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pretty sure BenB has a honda pan euro v4 or similar in his 7
Build Blog
Build Photo Album
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Slimy38
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| posted on 21/7/12 at 06:41 PM |
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quote:
Originally posted by spiderman
2012 Vmax 1600. 200 bhp @9000rpm, 123ft/lbs torque @6500rpm. How much power and torque do you get from a Yamaha or Kawasaki 1 litre?
Even a mid 80's 1200 version is 145 bhp @ 9000 rpm and 90lb/ft of torque @ 7500 rpm.
I stand corrected!! Although I wouldn't consider a 2012 vehicle as a donor, especially not on locostbuilders! 
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JC
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| posted on 21/7/12 at 06:50 PM |
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If it did rotate the wrong way, could you use the diff from a S2000? I think Honda engines certainly used to turn the wrong way as well!
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leeswesty
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| posted on 21/7/12 at 07:20 PM |
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When i was building trike's for the trike shop we turned the dif up side down to sort the wrong way out if the engineis sitting the same way as
it dose in the bike you have no problem as for vmax i d think again as i use to have aprilia rsv they sound grate and as bike pull well dont know what
it be like ina car not the fastest out there but its not all about speed now triumph rocket 3 i think will do well i rode one as bike and loved it
pull your arms cant say about going in car tho.
Live life to the max
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Peteff
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| posted on 21/7/12 at 08:36 PM |
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VMax gearboxes are crap in bikes so they would be even crapper in a car
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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KFC
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| posted on 21/7/12 at 09:14 PM |
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quote:
Originally posted by Peteff
VMax gearboxes are crap in bikes so they would be even crapper in a car
How are the gearboxes crap? I would like a slick gear change with flat shift.???
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