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Post subject: 250 YPVS coversions
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NickIrons Powerband Master Location: Bienne Switzerland |
I'm gonna buy this bike saturday regardless of what I'm
gonna ask as I'm gonna get it for £75.00 anyway.
But does anyone know if a 350 YPVS top end will go on this
as easy as a 4L0 does on a 4L1? Obviously there will be oil
pump/delivery issues, jetting/carbs/exhaust etc.
But is there any major engineering headaches involved?
ATB.
http://www.commerce-moto.ch/kunden_occasionen/1549/7808538873154926061801.jpg
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Posted: Tue Jun 03, 2008 3:11 pm
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Thrasherg Powerband Master Joined: 18 May 2007 Total posts: 620 Location: Austin, Texas |
Wow, that looks a bargain for 75 quid.. Can't go wrong at that price. I have no idea about the barrel swap.
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Posted: Tue Jun 03, 2008 3:26 pm
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NickIronsPowerband Master Location: Bienne Switzerland |
| Thrasherg wrote: |
| Wow, that looks a bargain for 75 quid.. Can't go wrong at that price. I have no idea about the barrel swap. |
Bargain ain't the word!!!
I'm buying it any way and gonna thrash the nuts out of
it but, if a 350 convo is feasable, I may chnge my mind.
Aren't those emission laws wonderful!!!!
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Posted: Tue Jun 03, 2008 3:29 pm
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cb250g5 Mmm, Fully Synthetic! Joined: 03 Dec 2005 Total posts: 1035 |
I believe it goes straight on - you will need head, barrels & powervalves, the powervalves are smaller in the 250, to the best of my knowledge.
Not sure if oilpump is the same or not.
That's a cracking buy.
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Posted: Tue Jun 03, 2008 3:37 pm
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bryanbengal All-gear Wheelie! Joined: 03 Oct 2006 Total posts: 1784 Location: Eastwood, Essex |
no mate nothing at all fits the 250s, to save you any trouble nick ill give ya £80 for it!
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Posted: Tue Jun 03, 2008 4:02 pm
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NickIronsPowerband Master Location: Bienne Switzerland |
| cb250g5 wrote: |
I believe it goes straight on - you will need head, barrels & powervalves, the powervalves are smaller in the 250, to the best of my knowledge.
Not sure if oilpump is the same or not.
That's a cracking buy. |
Yeah, it is, I get the impression it ain't worth the seller
the aggro getting it through the Swiss MOT cos of what
it's putting out emissions wise. If I can up it to 350 and
get a tune that complies, happy days!! Classic bikes
here don't come under this legislation like the 250YPVS
does, unlike the 25 year old 4L1's that are here hence
the price difference like this one which is on the same
auction for £750.00 at the mo!!
@Bryanbengal LOL!!!!
250 LC Link
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Posted: Tue Jun 03, 2008 4:53 pm
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NORBO RD/RZ Jedi Master Joined: 03 Aug 2003 Total posts: 5415 Location: Nottingham |
yes the 350 top end fits right on same crank and everything just up jet the carbs and turn up the pump and you are away. But ofcourse replacing the pump and carbs are better but it will still run with the 250 set up .
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Posted: Tue Jun 03, 2008 5:30 pm
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Post subject: top end swap.
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tomma Find me a Road! Joined: 01 Dec 2005 Total posts: 24 Location: Zurich, Switzerland |
Hello Nick, Do you think it will get through the MFK with a 350 top end? as I want to do the same to mine  I`m 25mins from Zurich maybe we can go for a blast one day and have our photos taken by boys in blue!!! 
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Posted: Wed Jun 04, 2008 10:43 am
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bryanbengalAll-gear Wheelie! Joined: 03 Oct 2006 Total posts: 1784 Location: Eastwood, Essex |
can you get it through by setting it lean at the bottom end or at what ever range the test is done at. Or is it noise related, which you could do what the bike manufactures have done on modern bikes and jet rich at that rpm, makes a joke of the emission regs rearly.
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Posted: Wed Jun 04, 2008 11:30 am
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