ET 967 Tuning Thread

[Prickster]

This is what I am running with the Zeel on a ET967, dual 46s, PFP pipe, and 180psi.

Jetting:
2.3 n&s
110 main
120 pilot
95 gram spring

Zeel:
18* at 1000rpm
33* at 1800rpm through 5400rpm
26* at 5500rpm
19* at 6000rpm
14* at 7000rpm

Never get into the high range due to all the power being down low. Hope this helps...

 

[waterfreak]

What jetting and curve did you go with?

^^^
@Callison62

I went with the curves that it came with (the first one is from wax racing i beleive) . May try some diffrent curves in the future but I'm pretty happy with this one.
mikuni 46's with 125 pilot 120 main 2.0 needle and seat set at 21 pop off

 

[Callison62]

I went with the curves that it came with (the first one is from wax racing i beleive) . May try some diffrent curves in the future but I'm pretty happy with this one.
mikuni 46's with 125 pilot 120 main 2.0 needle and seat set at 21 pop off

Thanks! What pump and impeller?

 

[SmittySX]

Do any of you guys have footage of what a well tuned 967 can do?

 

[Big Kahuna]

Took me 10 seconds.

 

[Parsonsjb88]

This is what I am running with the Zeel on a ET967, dual 46s, PFP pipe, and 180psi.

Jetting:
2.3 n&s
110 main
120 pilot
95 gram spring

Zeel:
18* at 1000rpm
33* at 1800rpm through 5400rpm
26* at 5500rpm
19* at 6000rpm
14* at 7000rpm

Never get into the high range due to all the power being down low. Hope this helps...

Wow, quite different than what ET suggested for my ski (identical setup/components):

125 pilot
135 Main
2.3N/S
115g spring (17-18psi popoff)

I just ordered my engine so I can't comment on how it runs till Spring/Summer. I'll let you guys know how it goes in April/May

 

[Prickster]

Wow, quite different than what ET suggested for my ski (identical setup/components):

125 pilot
135 Main
2.3N/S
115g spring (17-18psi popoff)

I just ordered my engine so I can't comment on how it runs till Spring/Summer. I'll let you guys know how it goes in April/May

Funny, Art originally told me 125p and 120m. Gave that a try, but was definitely fat and slugish. I got the jetting spec from someone local who has built a few of these motors, and 120p and 110m was the recommendation which seems to have been spot on. This is also in Florida / Sea level, so don't know if it changes for where you might be. The piston wash in spot on.

 

[joecef]

Wow, quite different than what ET suggested for my ski (identical setup/components):

125 pilot
135 Main
2.3N/S
115g spring (17-18psi popoff)

I just ordered my engine so I can't comment on how it runs till Spring/Summer. I'll let you guys know how it goes in April/May

Art told me the same set up he told uou. But I’m running 48’s


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[Prickster]

Wow, quite different than what ET suggested for my ski (identical setup/components):

125 pilot
135 Main
2.3N/S
115g spring (17-18psi popoff)

I just ordered my engine so I can't comment on how it runs till Spring/Summer. I'll let you guys know how it goes in April/May

I do believe builders give a basic starting point, which is just that, a starting point. I have noticed with a few friends that have gotten specs for other motors from builders that where way fat, but I guess it is better to be fat than lean.

 

[Parsonsjb88]

I do believe builders give a basic starting point, which is just that, a starting point. I have noticed with a few friends that have gotten specs for other motors from builders that where way fat, but I guess it is better to be fat than lean.

Without a doubt, you don't recommend the "perfect" jetting to a customer because it's nearly impossible. Too many variables with different quality fuel they use, elevation, water temps, pump loading, etc.

As long as it's reasonably close I can fine tune. I just don't want to get my ski on the water and it barely runs with the recommended jetting.

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[waterfreak]

Thanks! What pump and impeller?

148 mag with a 6/15

 

[Callison62]

Anyone running oem 155 with the 967? I would like to know what pitch people are running.

 

[Parsonsjb88]

Anyone running oem 155 with the 967? I would like to know what pitch people are running.

I plan to run an OEM 155 as well. Been hearing 6/12 or 7/12 are pretty close

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[joecef]

Anyone running oem 155 with the 967? I would like to know what pitch people are running.

I’m running a stock 155 with a cut back 6/11 I believe. I have it all written down. But if you scroll through this thread, it’s been mentioned. I was going through a tuning process this passed summer.


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[steve711]

Anyone running oem 155 with the 967? I would like to know what pitch people are running.

7/12 cutback with 89mm bore nozzle

 

[Colby]

Just curious anyone run this motor with fs49s? Torn between the 967 and 1107. Never flipped a ski. Already have the 49s. Thanks

 

[SmittySX]

Just curious anyone run this motor with fs49s? Torn between the 967 and 1107. Never flipped a ski. Already have the 49s. Thanks

For the price difference, the 1100 is a no brainer.

 

[Parsonsjb88]

Well then you may as well go to the 897x comp engine for $200 more. I personally went with the 967 because I do not want to deal with +10mm stroked cranks due to the increased frequency of rebuilds and associated rebuild cost.


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[Big Kahuna]

For the price difference, the 1100 is a no brainer.

Until it's new crank time

 

[Jcary85]

Anyone ever asked art what he gets for a new crank? He builds his own these days. I also wonder if he does rebuilds? Gotta be cheaper then a $900 normal crank rebuild right?