Series Two

[Catchbass]

Is the 2006 225 hp HPDI Series two stronger that a 2005 225 hp HPDI ? If so how does it run better or faster? Thanks

[Triton85]

I believe the 2006 are not series 2 and still series 1. But if you are asking if a series 2 has more power than a series 1 then see this thread:

http://www.bbcboards.net/zerothread?id=560007

[rangerguy]

The series two didn't come out until late 2007. I have a HPDI built in 3/07 and it is just a HPDI series one, if there is such a thing .

[rogermantor]

I think the difference was the oil pump. All the series 1's had a recall to upgrade to the newer oil pump I thought. I got mine in 06 and had the upgrade in 07.

[craigs06]

There is supposed to be about 20 more hp. The pistons are coated with a heat resistant coating, wrist pins were improved, I think some porting differences.

[I Fish GS]

Can you put a Series II power head on a older motor.

Brian

[225skeeter]

where can I find info on this recall

[JOHN202]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by I Fish GS &raquo;</td></tr><tr><td class="quote">Can you put a Series II power head on a older motor.

Brian</td></tr></table>

I would ask this on the Yamaha high performance board.One of the guys from Hydrotech will answer all your questions.

[rangerguy]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by 225skeeter &raquo;</td></tr><tr><td class="quote">where can I find info on this recall</td></tr></table>

Call Yamaha Customer Service with your serial number and they will tell you if your engine has had the recall pump done or requires it.