225 opti vs 225proxs

[xskeetshooter]

no

[EuropeanAM]

Welcome to BBC!

Comparing your 225 Standard Optimax to the 225 ProXS models, differences include (but are not necessarily limited to):

-Engine mounts
-Block Porting
-Cylinder Heads
-In some cases, pistons
-Direct Injectors
-Fuel Rails
-Air Compressor
-Reeds
-PCM Calibration
-Ignition Coils/Drivers (later models)

It's simply not a cost-effective decision to attempt "making" a ProXS... less costly to start with the engine you want.

[xskeetshooter]

what is the weak link in opti motors?
rods?
pistons?
preignition?-wrong fuel-too low octain?

could i balance the pistons and rods, slightly cut heads, clean up ports ,change reeds and keep her together?

i can do all the above.
i mean just how ustable is the opti?
if its that dang finicky, why they being sold at all?
i know how to port the engine.
who races this engine?
someone has info im looking for.
i just want to raise her up maybe 10-15%
if i had all the port dust from engines id have several hundred pounds of scrap too sell.
i know the concepts, just not experienced in outboards.
ported two that ran like hell with minor work.
both carby motors.
this being a injector motor im just looking for someone who can or will talk streight with me.

this is not a nasa rocket.
im just not familar with this engine.

[taeheel2az]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by xskeetshooter &raquo;</td></tr><tr><td class="quote">. . . im just looking for someone who can or will talk streight with me. </td></tr></table>

Well, you found him when Don answered your post. JMHO.

[Ranger519VS]

Any mod work you are going to do to increase flow would need the ECU to be re-mapped or you are going to be getting a lean condition. (lean=boom).

You need to start by talking to Eric at Simon Motorsports who specialize in racing applications for Optimax. Like Don said you are still going to be way ahead by starting with a Pro XS which already has most of the mods you are thinking about.

[xskeetshooter]

WHICH IS CHEAPER?
ME DOING A FEW MODS OR BUYING A NEW ENGINE?
COME ON GUYS, IM NOT TALKING ABOUT FULL RACING MODS.
THANKS FOR THE INFO!
I SEE THERE TUNABLE ECU PROGRAMMER, IT GIVES 15% MORE TORQUE.
ANYONE TRYED THEM?
IT ALSO HAS A RPM LIMETER OVER RIDE.
6% BETTER FUEL (YEA RIGHT)HA.
MORE POWER IS MORE FUEL CONSUMPITION PERIOD.

[taeheel2az]

"It's simply not a cost-effective decision to attempt "making" a ProXS... less costly to start with the engine you want."

[EuropeanAM]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by taeheel2az &raquo;</td></tr><tr><td class="quote">"It's simply not a cost-effective decision to attempt "making" a ProXS... less costly to start with the engine you want."




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

This is still my answer.

And here's a general idea of WHY:

Even if you were to successfully PORT the engine to match the ProXS model porting... you're going to need over $5000 in swapped components (see above list... you can look up the cost of most of these components on our website):

http://www.mercurypartsexpress...arine

Eric Simon @ Simon Motorsports would be a good person to speak with if you're still considering an attempt: http://www.simonmotorsports.com

[ol man river]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by taeheel2az &raquo;</td></tr><tr><td class="quote">"It's simply not a cost-effective decision to attempt "making" a ProXS... less costly to start with the engine you want."




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


if you simply want to go faster, put the $$$$ into the setup...jmho....

[xskeetshooter]

never mind,
i never said i wanted to turn it into a proxs!?!?!?
im stupid like the poeple you think i am.
bad me!

[taeheel2az]

Lighten up - not that big a thing..

You obviously have a lot of engine building experience - but when you ask, get an answer, ask again, get an answer, and ask one more time, well , , , ,

[EuropeanAM]

Agreed.

James.... if you want to try to peel out what you can from this engine, and discuss what is already available out there on the market, contact Eric Simon ( http://www.simonmotorsports.com ).

Eric's invested more money into R&D in this field in two years than I've made in the last decade....

[Daraco]

I probably shouldn't add my two cents here but I am anyway. I spend a lot of time looking and reading these boards but not much time responding. I respect Don's opinion a lot and he knows it but some of you gave XSKEETSHOOTER a hard time that he did not deserve. He never said he wanted to turns his Opti into a ProXS. He said he wanted to be able to wring some more out of her and wanted to know the differences in the motors. Seems to me XSHOOTER is a knowledgeable motorman but not on outboards. I'll say this XSHOOTER, mods were much easier back in the day before all the electronics. Much more to it now to increase HP in your motor and still keep it living. Don is correct though in the cost and in referring you to Eric.

[BrownTrout]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by EuropeanAM &raquo;</td></tr><tr><td class="quote">Welcome to BBC!

Comparing your 225 Standard Optimax to the 225 ProXS models, differences include (but are not necessarily limited to):

-Engine mounts
-Block Porting
-Cylinder Heads
-In some cases, pistons
-Direct Injectors
-Fuel Rails
-Air Compressor
-Reeds
-PCM Calibration
-Ignition Coils/Drivers (later models)

It's simply not a cost-effective decision to attempt "making" a ProXS... less costly to start with the engine you want. </td></tr></table>

Don,
What do you mean by "in some cases, pistons"?

I have a 2007 Pro XS. Am I "whole" in terms of all the above? I have had all my coils replaced under warranty with the newer version.

[EuropeanAM]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by BrownTrout &raquo;</td></tr><tr><td class="quote">

Don,
What do you mean by "in some cases, pistons"?

I have a 2007 Pro XS. Am I "whole" in terms of all the above? I have had all my coils replaced under warranty with the newer version.

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

Your engine would be "whole" as a ProXS. The differences noted are referring to a specific difference in the "dish" of the piston itself.

Standard Optimax models utilize a Blue (wide-pattern) direct injector, which requires a slightly different "dish" pattern than the Gray (narrow pattern, higher pressure) direct injector used in the High Performance Models.

It's an item that's seldom thought about... but there's a really good reason for the difference (the MASSIVE difference in spray pattern and delivery is easily seen on an injector service setup, BTW).