stevvo
L plate rider.
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Posts: 45
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Banshee
Jun 21, 2020 16:20:17 GMT 1
Post by stevvo on Jun 21, 2020 16:20:17 GMT 1
Ive seen quite a few mentions of Banshee as if its some sort of Holy Grail of performance, but from what I can see when trying to find out more it was just a model name for the ATV which only ever used a non ypvs engine. What am I missing? ![???](//storage.proboards.com/forum/images/smiley/huh.png)
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Banshee
Jun 21, 2020 16:33:33 GMT 1
Post by jon on Jun 21, 2020 16:33:33 GMT 1
Because the banshee engine in standard form is less powerful than say a YPVS engine, a lot of aftermarket stuff has sprung up around this. It WAS primarily an American market, but has gained popularity over the pond to build engines exceeding the YPVS HP.
The fact the YPVS and banshee share many parts, or they are interchangeable, you can fit a lot of banshee aftermarket goodies to the humble YPVS engine.
Jon
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Banshee
Jun 21, 2020 16:45:45 GMT 1
Post by flames on Jun 21, 2020 16:45:45 GMT 1
Ive seen quite a few mentions of Banshee as if its some sort of Holy Grail of performance, but from what I can see when trying to find out more it was just a model name for the ATV which only ever used a non ypvs engine. What am I missing? ![???](//storage.proboards.com/forum/images/smiley/huh.png) The standard YPVS makes around 55-60bhp. Depending on the banshee kit fitted, i recently saw a post with a dyno making 112bhp......that works out as around 50bhp you are missing. If i had the money, i would deffo build one. ![:D](//storage.proboards.com/forum/images/smiley/grin.png)
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Banshee
Jun 21, 2020 16:47:57 GMT 1
via mobile
Post by midlifecrisisrd on Jun 21, 2020 16:47:57 GMT 1
As Jon says
A banshee engine is just a ypvs bottom end with a non pv top end
Bore and stroke are the same so all the hi power banshee parts can be fitted to a ypvs bottom end
An of course a ypvs bottom end goes straight in an LC frame
Steve
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stevvo
L plate rider.
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Posts: 45
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Banshee
Jun 21, 2020 16:48:49 GMT 1
Post by stevvo on Jun 21, 2020 16:48:49 GMT 1
Because the banshee engine in standard form is less powerful than say a YPVS engine, a lot of aftermarket stuff has sprung up around this. It WAS primarily an American market, but has gained popularity over the pond to build engines exceeding the YPVS HP. The fact the YPVS and banshee share many parts, or they are interchangeable, you can fit a lot of banshee aftermarket goodies to the humble YPVS engine. Jon Yes thats what I had thought. So a Banshee spec engine , although sounding wild, may just be bog standard!
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Banshee
Jun 21, 2020 16:49:19 GMT 1
via mobile
JonW likes this
Post by midlifecrisisrd on Jun 21, 2020 16:49:19 GMT 1
I just wish they would make more 421 or 485 cylinders with the blade style pv's in them 🙁
Steve
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Banshee
Jun 21, 2020 16:55:36 GMT 1
Post by reedpete on Jun 21, 2020 16:55:36 GMT 1
The banshee cases are a little stronger than YPVS, not because of power but because of torque impact when an ATV is airborne And lands etc. So the banshee cases are the preferred platform for high power motors .
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stevvo
L plate rider.
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Posts: 45
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Banshee
Jun 21, 2020 17:11:39 GMT 1
Post by stevvo on Jun 21, 2020 17:11:39 GMT 1
The banshee cases are a little stronger than YPVS, not because of power but because of torque impact when an ATV is airborne And lands etc. So the banshee cases are the preferred platform for high power motors . Is that really true or just an urban myth? Stronger alloy or a totally different casting? From what Ive read it was just the same LC engine in a 4wheeler which was never upgraded to YPVS spec?
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stevvo
L plate rider.
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Posts: 45
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Banshee
Jun 21, 2020 17:14:47 GMT 1
Post by stevvo on Jun 21, 2020 17:14:47 GMT 1
As Jon says A banshee engine is just a ypvs bottom end with a non pv top end Bore and stroke are the same so all the hi power banshee parts can be fitted to a ypvs bottom end An of course a ypvs bottom end goes straight in an LC frame Steve Is the ypvs bottom end different then? Thought it was just the top end changed?
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Post by jon on Jun 21, 2020 17:18:54 GMT 1
Oh no, quite a bit changed for the LC.
Wider gears, selector and crank.
Totally different barrel stud pattern.
Jon
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Banshee
Jun 21, 2020 17:23:16 GMT 1
Post by jon on Jun 21, 2020 17:23:16 GMT 1
Banshee and YPVS have different gearing, even if interchangeable.
Jon
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stevvo
L plate rider.
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Posts: 45
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Banshee
Jun 21, 2020 17:33:12 GMT 1
Post by stevvo on Jun 21, 2020 17:33:12 GMT 1
Banshee and YPVS have different gearing, even if interchangeable. Jon Can understand that, off road speeds would be significantly lower, would that necessitate a case difference?
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Banshee
Jun 21, 2020 17:39:03 GMT 1
Post by jon on Jun 21, 2020 17:39:03 GMT 1
Case change is more of a development thing than a necessity IMO.
Later YPVS engines have a wider front gasket face as do banshee.
It’s almost like a continuous development rather than a necessity.
Jon
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Post by bare on Jun 23, 2020 17:33:28 GMT 1
Banshee Go faster efforts .. continue.. Although it IS on the wane. In North Amurica at least. But many of these parts continue with a few makers soldiering on.. or are still NOS available. PV engines were/are essentially Non starters here. Too few, almost None sold in USA.
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Banshee
Jun 23, 2020 18:00:50 GMT 1
Post by LC_BOTT on Jun 23, 2020 18:00:50 GMT 1
So whats taken over then bare? or is it just dying naturally, less racing, more expense, less interest, and people moving on to different things etc
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Banshee
Jun 23, 2020 19:29:14 GMT 1
via mobile
Post by flames on Jun 23, 2020 19:29:14 GMT 1
I always thought America got the pv's not lc's.so I figured it was an emisions thing.
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Deleted
Deleted Member
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Post by Deleted on Jun 23, 2020 20:44:48 GMT 1
Yes the US got the PV’s, essentially 1983 LC2’s, however marketed as 1985 models, however little or no LC’s due to emissions, any LC’s no doubt were brought in via Canada, there was no F1 or F2 models either, although I’ll stand corrected on that
Emission controls were added to the exhausts, with an extra idiot light on the kidney clocks to tell you to change canisters, so the exhausts were different in the headers too
The canisters also required some extra plumbing and wiring too
Most other major bits fit, head barrels, panels, wheels etc and of course they were heavily promoted by Kenny Roberts name, the all American motorcycle racer
Off road racing was and probably still is the in thing in the US, and for not much money, you bought the Banshee and away you went
That was the springboard for the making of go fast bits, your 421’s through to well over 500 and I think pushing 600cc, lock up clutches, straight cut gears, billet heads, I could go on, so for perhaps 20K you had a mean racing machine as opposed to your 100k plus buggies, cheap thrills in comparison
The advantage was that the majority of these bits would fit the standard road bikes and still do, just have a peak at Norbo’s trick bits or Mutts’ shop and you’ll get an idea
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Banshee
Jun 23, 2020 22:32:44 GMT 1
via mobile
Post by bigdork on Jun 23, 2020 22:32:44 GMT 1
They make billet cases for the banshees up to 4 cylinders. Displacements well over a liter. As everything is either bespoke, billet and/or involves a great deal of labor those motors can get very expensive. And then you will need a frame that can handle and use that power. At some point it is really no longer an RZ or LC in anything but design. I love them, but they'll cost as much or more than a modern bike that would likely leave them on a track, get better mileage and be nearly maintenance free.
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Post by muttsnuts on Jun 25, 2020 12:42:55 GMT 1
They make billet cases for the banshees up to 4 cylinders. Displacements well over a liter. As everything is either bespoke, billet and/or involves a great deal of labor those motors can get very expensive. And then you will need a frame that can handle and use that power. At some point it is really no longer an RZ or LC in anything but design. I love them, but they'll cost as much or more than a modern bike that would likely leave them on a track, get better mileage and be nearly maintenance free. but nowhere near as much fun ! ![:)](//storage.proboards.com/forum/images/smiley/smiley.png)
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Post by srhiskx on Jun 25, 2020 18:06:31 GMT 1
The US got the YPVS for only 2 years 84/85. Only major difference between the 2 model year other than color was an updated ignition system on the 85’s to cure the 84’s CDI box failures. In 85 also California also got an emissions model to meet their requirements. After that we were done other than the YSR50/MB5/ NS50’s for 2 stroke street bikes.
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Banshee
Jun 25, 2020 23:23:44 GMT 1
via mobile
Post by tacky1 on Jun 25, 2020 23:23:44 GMT 1
So whats taken over then bare? or is it just dying naturally, less racing, more expense, less interest, and people moving on to different things etc 4-strokes. I sold my banshees years ago. Now I have a raptor 700. It’s a beast. CP piston +2 valves, CNC head. billet cam, 58mm throttle body etc. puts out 86hp. It’s a handful. Great craic in the dunes, hard to control in the trails, woods.
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