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topfridgeman
Joined: 08 Oct 2012 Posts: 15
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Posted: Sun Mar 17, 2013 5:43 pm Post subject: 4L0 numbers on my YPVS motor? |
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Hello,
Has anyone come across this before? My 31k YPVS engine has this engine number * 4L0-103617* . Is this a very early YPVS motor, or some sort of frankenvalve? The numbers are well stock looking. I assumed that the YPVS and LC barrels, crank etc. were non compatible.
Col. |
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Norbo
Joined: 13 Feb 2013 Posts: 121 Location: Nottingham
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Posted: Mon Mar 18, 2013 7:31 am Post subject: |
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I have seen a YPVS top end put on an LC just 1 time ever the bottopm casing was moded for this and you would be able to see this. If it is as you say then some one has done it to make them match the frame Yam neve did it so they have bneen tampered with no matter how nice they may look . _________________ www.rdlccrazy.co.uk. Home of The Onr Stop LC Shop |
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topfridgeman
Joined: 08 Oct 2012 Posts: 15
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Posted: Mon Mar 18, 2013 6:26 pm Post subject: 4l0 |
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Oh, right. The numbers don't match anyway, coz it's on a hybrid 4l1 frame. It might be worth me getting a ypvs motor then, as mine's probably down on horses. I'll have to get it on the dyno. Would the 31k crank fit in the lc cases? I assumed the ypvs crank was a much stronger unit?
Col. |
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Norbo
Joined: 13 Feb 2013 Posts: 121 Location: Nottingham
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Posted: Mon Mar 18, 2013 10:38 pm Post subject: |
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The ypvs crank is better it has a 1mm bigger big end bearing and better webs. But No they will not retro fit in a set of L:C cases as they are to wide . You can masheen lc cases to take a ypvs crank but there is not realy much point with the cost . _________________ www.rdlccrazy.co.uk. Home of The Onr Stop LC Shop |
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topfridgeman
Joined: 08 Oct 2012 Posts: 15
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Posted: Tue Mar 19, 2013 7:31 pm Post subject: |
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Anyone got a ypvs bottom end they want shut of?
Col. |
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topfridgeman
Joined: 08 Oct 2012 Posts: 15
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Posted: Tue Mar 19, 2013 7:34 pm Post subject: |
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Has anyone got a dyno printout of a stock 31k YPVS bike?
Thanks.
Col. |
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