Freestyle ET 967 Setup?

[Citizen]

Sooo...I have a new ET967 showing up in about a week and hoping you guys can help me get in the ballpark for tuning. I have reached out to Art but he is pretty slammed and haven't been able to get any info out of him yet.

It will get dropped into a -8.5 carbon superfreak badass w/

Bpipe
Dual 46 taper bored carbs 135main/120pilot w/ silver|pewter spring
Lightened flywheel
H20 torrent 148 setback mag w/ 9/15 hooker. I have a shop that can repitch this if needed.
MSD enhancer

I plan to run pump gas


***UPDATED SPECS w/ PFP***

-8.5 Carbon Superfreak Badass
ET967 w/ lightended flywheel
Pump gas domes (not sure on compression yet)
MSD Enhancer
Torrent 148 setback mag w/ 9/15 skat trak
Dual taper bored 46's - 135m/125p w/ pewter spring and 2.0 needle/seat (had 2.3's in it before)
Unknown Carbon reeds
Power factor pipe (not sure where to put temp strips or what temps in what areas I am looking for)
2000' above sea level.

Main questions are:

1) What should my jetting be for the carbs? I read all the threads I could find and it "sounds" like i should change to 130main/125pilot and keep the springs but I would like verification if possible.

2) Should I advance my timing? And if so how much? From what I have read it sounds like 3 degrees is about max that is safe on a stock engine, not sure if that changes with this new motor.

3) Should I re pitch prop or should I be good with the 9/15? I do chase boats but very very rarely WOT for more than a few seconds, not too worried about top end, just want as much low end as possible to get flips around.

Thanks in advance for your help guys! Want to get as much as I can out of this motor while keeping it reliable. I know a pfp/tnt pipe, TL and Full spec carbs will really wake up the motor and it is on my list to get next. But for now I will need to tune around this setup.

 

[DAG]

Take it as advise from someone that learned the hard way. Get to a tuner if you can't tune yourself. No one here can give you the details you are asking and learning the hard way is very very expensive.

 

[Citizen]

Not aware of any tuners in my area, and don't mind learning or doing things myself. Was just hoping for some ball park figures to dial it in from there. Appreciate the advice though, if i was close to a tuner i would most likely go that route.

 

[Yami-Rider]

In my buddies ski

ET 967
Factory b with blaster mod chamber
Pump gas domes 170psi
ATP flame total loss
V-force reeds
Dual oem mikuni 46's
125 Low 1.5 turns out
130 main 1.25 turns out
600 feet above sea-level

 

[Citizen]

In my buddies ski

ET 967
Factory b with blaster mod chamber
Pump gas domes 170psi
ATP flame total loss
V-force reeds
Dual oem mikuni 46's
125 Low 1.5 turns out
130 main 1.25 turns out
600 feet above sea-level

You are the man thanks sir. I am at about 2k elevation, any idea if that is enough to change his settings?

 

[Yami-Rider]

Ya, your need to run a little leaner then us at that attitude, you could probably start with your jetting you have now with both screws 2 turns out, 3 is as fair as you can go, it should be too rich, but best to start too rich and work your way to leaner, cleaner running machine.

 

[Citizen]

Ya, your need to run a little leaner then us at that attitude, you could probably start with your jetting you have now wit has both screws 2 turns out, 3 is as fair as you can, I should be too rich, but best to start too rich and work your way to leaner, cleaner running machine.

Will do sir, appreciate the feedback!

You happen to know what prop his ski likes best? And 170psi seems low for compression? I run more than that with just a ADA head. This will be my first a/m motor though.

 

[Yami-Rider]

Depends what your doing with the motor and port timing to determine the compression you can safely handle.

He is running low psi since his motor sees alot of mid to top rpm. You can run higher if used for freestyle or running race fuel.

Can't compare props. He's running a 144 oem pump in an kawasaki x2.

For a carbon ski and 148 pump, I think your about right on the prop.

 

[Citizen]

Sounds like I am close then, didn't realize he had more than one option for gas domes, just assumed 185~ was standard.

I do chase boats but i rarely hit WOT other than for a few seconds when i hit the wakes.

I think last thing I need to figure out is if I should advance timing and how much, reached out to Art again for that info, hopefully i can get some feedback.

Thanks again for the help man.

 

[MarkWalker]

Please keep us updated with a motor review when you get it in the ski.

 

[Yami-Rider]

I assume your running atleast a msd enhancer?

 

[Citizen]

Yes I have a MSD enhancer

 

[Yami-Rider]

Art is prolly going to tell you the msd doesn't throw enough timing for his motor, it likes a lot of timing down low, you should be able to get away with 2-3 degree advanced static timing, don't hold it wot.

 

[Citizen]

Art is prolly going to tell you the msd doesn't throw enough timing for his motor, it likes a lot of timing down low, you should be able to get away with 2-3 degree advanced static timing, don't hold it wot.

That's about what i was thinking timing wise. As far as not holding it wot, I should be fine for what, 15-20 seconds of WOT? or just the 5 seconds during flips etc?

 

[Yami-Rider]

There's no telling how long it can handle wot. Flips etc never see full rpm 7500~8k for more then maybe a slipt second, as long as you let off the throttle while in the air.

 

[long beach local]

Start with a 140m at least . 3 turns out use 50/50 race gas BE PATIENT good luck with 100%pump those 94mm pistons melt quickly.2K elevation you may be ok ?? Ask Art!!

 

[Citizen]

Start with a 140m at least . 3 turns out use 50/50 race gas BE PATIENT good luck with 100%pump those 94mm pistons melt quickly.2K elevation you may be ok ?? Ask Art!!

Thanks man, def wont be running race gas, i dont see it being an issue with compression that low. Hopefully Art will get time to get back to me soon.

 

[krash45p]

You will need like a 13/18 atleast

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[krash45p]

That prop you have know will spin like a top i also would tune it rite before playing with timing get jetting done first then try othet things also add a spraybar to b pipe get rid of those stock water injectors you will get a more constant temp with spraybar

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[Yami-Rider]

@krash45p, Did you miss the 148 diameter? 148 prop tunning is way different then 144.