Max RPM Range for a 225 HPDI 3.3L

[SkeeterJohn]

Would i be correct that the Series 2 Max recommended RPM Range - 5000-6000 but the series one is 4500-5500 ?

It seems so many people recommend turning close to 6000 even on the older series one motors.

[spider1]

I turn my 2005 300HPDI to 6149

[Reata210]

In my manual the Max RPM on my non series2 3.3 225 is 6000

[SkeeterJohn]

Good! Just playing it safe I hadn't hit the limiter but going over the manual recently i noticed the range was 4500-5500 which seemed odd considering the higher rpms people on here quote. I knew the series 2 was up to 6k just wanted to make sure it was ok to run the series one up that high...

[eal4500]

It seems odd, but the 2006 3.3 liter (series 1) HPDI motors were in the spec. chart as 5,000 to 6,000 RPM range. Just FYI.

[rangerguy]

That is what my 2007 300 HPDI series 1 manual says also, 5000 to 6000 rpms

[spider1]

There is nothing wrong to hit the limiter every now and then. So far I have been there 28 times.

[SkeeterJohn]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eal4500 &raquo;</TD></TR><TR><TD CLASS="quote">It seems odd, but the 2006 3.3 liter (series 1) HPDI motors were in the spec. chart as 5,000 to 6,000 RPM range. Just FYI.
</TD></TR></TABLE>

I have two product manuals. The one printed March 2006 states 5000-6000 but the one printed April 2004 states 4500-5500 but I don't have one for 2005.

I hooked my motor up to my laptop and it's only hit the limiter twice and that was with the first owner.




Modified by SkeeterJohn at 7:53 PM 6/8/2009

[iron banks]

My 225 series two gives a 5000-6000 rpms

[Reata210]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkeeterJohn &raquo;</TD></TR><TR><TD CLASS="quote"> I hadn't hit the limiter but going over the manual recently i noticed the range was 4500-5500 which seemed odd considering the higher rpms people on here quote. I knew the series 2 was up to 6k just wanted to make sure it was ok to run the series one up that high...

</TD></TR></TABLE>

Are you sure you're not looking at the “Max Output Range” at 5500 r/min? “Full Throttle Operating Range is 5000-6000 r/min (at least in my manual non series2 225; page 48 under spec)

[Reata210]

I see what you're saying; I went to Yamaha online and downloaded the 05 manual. After 06 all Series1 engines as well as Series2 are 5000-6000. The 05 manual lists in specifications as you state 5500 Max. I also heard off the record that Yamaha was running the Series2 changes for one year in production before the badging changed on the cowl. The RPM change coincides with that. MFG Date July07 is when Series2 came out. Mine is Jan07. Looks like Yamaha may have ran the Series2 in disguise for one year which is very common for a MFG when changes are made.

[SkeeterJohn]

Exactly... when you look at it in a little more detail it would seem that's indeed the case.

I currently run my '05 motor at 5600 rpm with a T1-27P but when i put on my T1-25P it ran slightly over 6000rpm before i lowered the JP so it ran at slightly below 6000.

I didn't hit the limiter which would lead me to think it's set at 6150 just like the newer motors. I know this to be true as i read the values recently and it only showed hitting it twice and that was a long time ago before i even owned it.

I just want to make sure if the advice to run to 6000 stands true for the slightly older models.

If yes then the manual is wrong... if no then why is the limiter set to 6150...

[Bassin Bob71]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reata210 &raquo;</TD></TR><TR><TD CLASS="quote">I see what you're saying; I went to Yamaha online and downloaded the 05 manual. After 06 all Series1 engines as well as Series2 are 5000-6000. The 05 manual lists in specifications as you state 5500 Max. I also heard off the record that Yamaha was running the Series2 changes for one year in production before the badging changed on the cowl. The RPM change coincides with that. MFG Date July07 is when Series2 came out. Mine is Jan07. Looks like Yamaha may have ran the Series2 in disguise for one year which is very common for a MFG when changes are made. </TD></TR></TABLE>

My 225 HPDI was built in Nov. of 06.........does it have all of the Series II upgrades then?

[SkeeterJohn]

Perhaps one tell tail sign would be to ask if you needed to get the oil pump recall? I believe that was one of the updates on the series II.

It starts to make you wonder a little eh. I'd just like to know more about the rpm issue and if it really is safe to run higher... i just think if they had spec'ed it to 5500 then you'd think they'd set the limiter to be lower....

[Reata210]

My boat came rigged from Ranger and had the updated pump installed from Yamaha.

As far as the RPM, if it’s spec'd at 5500 I would not exceed that and I would prop it to max at 5500. Mine maxes at 6000 and is propped from Ranger to max at 5600-5700 which I think is perfect. I would follow the MFG recommendation for Max RPM, yours being 5500 I would not exceed that. I do not agree propping a boat to exceed the MFG recommendation for Max RPM.

[LegendMan]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 08 198 Champ &raquo;</TD></TR><TR><TD CLASS="quote">

My 225 HPDI was built in Nov. of 06.........does it have all of the Series II upgrades then?</TD></TR></TABLE>

Most likely does. Before the changes are “officially rolled out” it would be common place to run changes in production until comfortable things are smooth. Either way there is very little difference from any late model HPDI and the Series2.

[spider1]

You really need to prop these motors out at around 6000 otherwise you are just losing horse power if you only prop to 5500.

[SkeeterJohn]

From what i have found so far it seems Yamaha has simply revised it's max rpm ratings which were too conservative in their documentation.

[LegendMan]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spider1 &raquo;</TD></TR><TR><TD CLASS="quote">You really need to prop these motors out at around 6000 otherwise you are just losing horse power if you only prop to 5500.
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I agree with your statement on a modified engine. On a stock 3.3 HPDI the Max HP is delivered at their spec’d RPM range. Even if you tweak out a couple more HP exceeded a spec'd max RPM range I still do not agree it is wise. I personally do not feel comfortable advising against what is published by Yamaha. Depending on model year they are spec’d at max 5500 or 6000 for a reason.

[Bassin Bob71]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkeeterJohn &raquo;</TD></TR><TR><TD CLASS="quote">From what i have found so far it seems Yamaha has simply revised it's max rpm ratings which were too conservative in their documentation.

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I think thats right. Not a Yamaha expert here, but hasn't the rev limiter been set at 6150 for quite a while now......even when the redline was 5500? Several of the 04 and 05 HPDI tests in BWB would always say even tho it was above Yamaha's spec, they would always turn them to 6K I believe it was for MY06 that they changed the spec to 6K - in the documentation.