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HPDI Series 1 vs Series 2 #5991393 03/25/11 01:52 PM
Joined: Mar 2008
Posts: 345
S
Skeeter14 Offline OP
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Joined: Mar 2008
Posts: 345
Why have so many VMax HPDI Series 1 poweheads blown and been replaced by Yamaha with the Series 2? I know there was a problem with that engine but don't recall what it was. Can someone give me some details?

Thanks

Re: HPDI Series 1 vs Series 2 [Re: Skeeter14] #5992636 03/25/11 08:29 PM
Joined: Feb 2011
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arsonist23723 Offline
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Posts: 84
Series 2 has the updated oil pump that was recalled from series 2 and they changed the pistons. Both electronic and fuel systems are the same

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