Other Epic Hx3 needs re-jetting carbs.

[Freakrider]

Have seen one case where a 771 needed bigger pilot jets and heard of another ski that needed re-jetted also in some unknown way. Seems this isn't common knowledge and I thought I'd pass it along. Not sure if this is the case with smaller motors like 701. Also as a reminder do not use non resistor plugs. Example : Do not use B8ES....use BR8ES.

 

[Freakrider]

More advance and greater spark energy often means you need to re jet.
Chris.

What's interesting is my Gen 1 Epic did not need re-jetted on a XS 735 and it had 30 degrees advance rising quickly after 1500 rpm. Maybe the Hx3 has higher spark energy or it's relevant to higher cc's.

 

[motozachl]

I had to adjust my screws slightly (about 1/8 more) to compensate. Different jet was not required.

 

[Freakrider]

I had to adjust my screws slightly (about 1/8 more) to compensate. Different jet was not required.

What size motor cc's ? How do you like it so far ?

 

[rubbertoe]

If your ski was jetted correctly prior to adding the Hx3 I would add some fuel to the circuits after installing it for maximum Braaap by either turning the screws or possibly jetting up if you are running the #2 curve . every engine will be a little different with its fuel needs depending on your engine combo ,and how well its jetted to begin with . i personally went up one on the mains and out on the pilot screws .this combo worked good for me .

 

[Freakrider]

If your ski was jetted correctly prior to adding the Hx3 I would add some fuel to the circuits after installing it for maximum Braaap by either turning the screws or possibly jetting up if you are running the #2 curve . every engine will be a little different with its fuel needs depending on your engine combo ,and how well its jetted to begin with . i personally went up one on the mains and out on the pilot screws .this combo worked good for me .

Local rider could not adjust it rich enough for his 771. He needed to go up 5 with the pilot jets to provide enough fuel which shows the HX3 makes a significant difference.

 

[waxhead]

Any time you advance the timing down low you will end up having to put in more fuel. But the torque hit will be huge

 

[102nd7]

What plugs are you supposed to use cause I got br8es in mine now with the hx3.

 

[Buckwild12]

You have what you need for plugs, solid tops are a better option than the screw on tops! Aftermarket ignitions tend to need resistor plugs.

 

[102nd7]

You have what you need for plugs, solid tops are a better option than the screw on tops! Aftermarket ignitions tend to need resistor plugs.

Aghhhh i guess I should have read that better. Thanks for clearing that up tho

 

[badvinny]

I 'dont' recommend resistor plugs personally.

 

[BruceSki]

I'm out of the loop here. What is an HX3?

 

[Freakrider]

I'm out of the loop here. What is an HX3?

The new Epic features different start up circuit design and higher spark energy than old Epic.

 

[Freakrider]

I 'dont' recommend resistor plugs personally.

We can't even start the engine with non resistor plugs.

 

[badvinny]

We can't even start the engine with non resistor plugs.

I haven't had a problem, got a full season on mine with zero problem, but I was born with "the Midas touch!" lol.

 

[Freakrider]

I haven't had a problem, got a full season on mine with zero problem, but I was born with "the Midas touch!" lol.

We recommend you always use resistor rated plugs with any digital ignition.
Chris.

I have personally witnessed two skis unable to start up and only fire sporadic and shut off. One had a Flame and the other a HX3. Put in resistor plugs and bam, runs fine.

 

[badvinny]

Well now I have to check, my ski is stored at the cabin and my old memory really isn't that reliable.....but it runs great with the Hx3 regardless!