excalibur 330 to 383 stroker I build

[Yoshihiro]

[thedude]

Great project! Glad to see somebody has tackled it. The mechanics is the part people are most familiar with, the remapping the ECU is a little more scary. Please post up your impressions of the engine after you get some run time with it. Great job!

[TRBenj]

excalibur 330 to 383 stroker I build

How did you unlock it? Does mefiburn have marine stroker curves, or did they modify auto ones?

[Yoshihiro]

I am scary using stock calibration.
Anybody should not use carb　so it already have EFI system.

The ski nautique runs about 40hours, it has no problem.
I changed spark plug to higher heat range.
It is more better.
This motor is good fuel efficient.

I don't know why anybody do it.
When rebuild the ex330, anybody should to make the 383 stroker.
I think so.

[Yoshihiro]

I have MEFIBURN softwere.
I checked calibration checksum HEX code and tell them it.
They recall unlock code.
Also, I tell engine specification to them, they supply calibration for my engine specs.

When you send your ECM to them, they rewrite your ECM for you need specs.

[aZ`]

I'm not sure I would trust a mail order tune on such a modified engine. Does mefiburn allow you to make changes yourself?


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[Yoshihiro]

Yes, I can change it by myself.
If you buy MEFIBURN software, include tune pro software.
It can be adjusted fuel and spark timing.

Anyway, I can unlock the MEFI and rewrite it.
when I try to change some point, the engine was changed.

I can trust MEFIBURN.com.
It is up to you whether trust or not.

[cazman]

Sounds like you have done your research. I agree, if you need to rebuild - do a stroker.

What is you opinion on supercharger vs stroker?

[MNC5]

Nice job, as someone else mentioned let's see a video of that beast in action. That thing should really be fun to drive.

[Yoshihiro]

Sorry. I could not take video last weekend because sometime thunderstorm.
I will take video this weekend.

I don't know supercharged.
I believe, supercharged is more better.
However, it is very expensive.
The stroker is low cost than it.

I think stroker is vest way than ZR450.

[Yoshihiro]

wake size at same time.
2500lb ballast + 4 peoples at 21.5mph.
rider has 5'3" height.

[Yoshihiro]

[Yoshihiro]

[Yoshihiro]

[TRBenj]

Videos aren't working for me... YouTube says they're private.

What have you seen for speed on the GPS?