ECP Jetting

[RTX Meirda]

Just going over some of my notes from last year.

Did anyone try to jet down from the 165 mains?

I found that the motor had a "fatter" sound from the 3/4 throdle position.

I may install a dial a jet type of set up.

 

[Frostbite]

Yes, several of us in the mountains use 160 mains. I actually tried 157.5 and thought they worked great as well. Who knows what's best but based on the 165 being the prefered jet for 2,000 feet and 60 degrees (I believe that's CLOSE to Freddie's original testing data). I think there is a wide range of jets that will work just fine. I'd LOVE to see a recommended jetting chart for the ECP filters.

 

[SUPERTUNER]

I took the time last year to go out and put an RX1 on radar over the same distance every time. I went out with the 165's and the sled went 117 MPH over the distance. (about 1100 feet if my memory serves me correctly) I installed a set of 170's...the sled went 117 MPH. I then installed a set of 175's and the sled went 118 MPH. Jetting is no where as critical as it is with a 2 stroke. I doubt that with the 175's/118MPH, you would have even been able to see a power increase on the dyno. High altitude where there is less oxygen/air, definately lean down 1 or 2 sizes.

Make sure when changing jets that you use GENUINE MIKUNI JETS!!! Not even the Mikuni manufactured made for Yamaha are all sized the same. Many aftermarket jets are sized diiferently and flowed differently despite the same size being marked on the jet.

 

[Blue shadow]

Freddie,s :ORC

 

[RTX Meirda]

Hey Freddie:

I am not doubting your ability. When I ride the sled...I can hear a change in pitch in the sound that the motor makes in different throdle positions.

Maybe the sound is tricking me...but in 2 strokes I have found the the jets are too big when you hear that deep pitch instead of the zing.

I know that jetting is not near as critical on a 4 stroke....but 135 to 165 jets seem like a big jump.

If you tell me that you tested less than 165 jets and there was no improvement.....I will leave the 165's in.

Thanks

 

[SUPERTUNER]

The heck with talking shop Meirda...how about introducing me to the girl in your avatar!!!?!!! :shock:

The sound you are hearing is the slides moving to a more open position. It is much like in the old days when we used to remove the air cleaner from Mom and Dad's car to make the 2 barrel sound like a 4 barrel. Don't be fooled by this and good luck. If the sled still feels like it is pulling, then leave it alone.

If she wants to e-mail me, tell her my address is KliesECP@aol.com.

Thanks,
Freddie

 

[Frostbite]

Freddie, you are such a gentleman I'm SURE she'll e mail you . In my limited experience I believe 160 mains seem to work well for altitudes above 4,000 feet. I even used 157.5 when over 6,000 feet and the sled worked just fine.
What I would like to see is if there is a huge difference in changes to NEEDLE POSITION. I need to reaquaint myself with last seasons tuning notes but what is the recommneded needle setting with ECP filters? I still would like to see the results from a R-1 motorcycle or dynojet needle. Maybe even Dynojet jets would make a difference?
Freddie, I'm almost embarrased to ask this but have you tried the stainless steel intake vortex generators "tornados" in your testing?

 

[SUPERTUNER]

Freddie, you are such a gentleman I'm SURE she'll e mail you . In my limited experience I believe 160 mains seem to work well for altitudes above 4,000 feet. I even used 157.5 when over 6,000 feet and the sled worked just fine.
What I would like to see is if there is a huge difference in changes to NEEDLE POSITION. I need to reaquaint myself with last seasons tuning notes but what is the recommneded needle setting with ECP filters? I still would like to see the results from a R-1 motorcycle or dynojet needle. Maybe even Dynojet jets would make a difference?
Freddie, I'm almost embarrased to ask this but have you tried the stainless steel intake vortex generators "tornados" in your testing?

Don't be embarrassed...I don't even know what "Vortex Generator tornado's are! Send me some or a link and I will try them though. The deal with the R1 needle is that it is designed for a ram-air style airbox. I am sure it will be too rich for the application but I don't know everything. I have seen where things I would bet my life against not working, work.

Regarding needle poisition...whatever works for you. This is why there are relatively easy to adjust.

Now about the girl...

 

[Mighty]

Consumers report tested those tornado things and said they were a complete waste of money.

 

[Frostbite]

Mighty Warrior, that may be true but I have also read that air horns on snowmobiles prove to provide absolutely zero gain in any measure of performance!
Hey, at least they are made of stainless steel and won't corrode

 

[SUPERTUNER]

Consumers report tested those tornado things and said they were a complete waste of money.

Without being present during the test, makes someone like me wonder just how much tuning did they do or did they simply install them, found out it lost power and called them junk? Often, you have to makes other changes to extract and optimize the power from a product or mod. Take cylinder or cylinder head porting for instance... properly done, porting imporves airflow either by mass air flow (volume) or speed (velocity) thereby making it necessary to enrichen fuel.

I go by this prohecy..."The perfect tool n the hands of a fool is but a worthless thing, but the poorest kind with some will behind will fashion a throne fit for a king".

Once again people have to go into test for products like these with the attitude to prove they will work instead of trying to prove they don't work. Most people want it too easy in most cases.

Freddie

 

[Bossman]

Supertuner you are quit the poet and exactly true with what you said. Most times people just expect to bolt something on and see the immediate gains not knowing they need to make other mods to find the gains expected.

 

[Frostbite]

I really don't plan to put a lot of effort into defending the Tornado fuel saver. Yes, there are those who don't believe they work. There are those that do.
To me it goes WAY back to one of my Physics classes. We were asked by the Professor, what's the fastest way to evacuate the water from a glass cylinder? There were all kinds of answers but the bottom line was you "swirl" or twist the water. I'm sure that's why a toilet swirls the water as it flushes.
I just apply this same thought process to the air in an intake tract. If you swirl it perhaps it will move along more easily and quickly?
There are the throttle body spacer routinely being sold now that supposedly swirl the intake air as it comes out of the throttle body and in to the intake tract of an engine. Isn't this the same thought process?

I was just throwing this out there as a possibility. If there's a way to increase the power coming from our RX-1 engine; sign me up!

http://www.tornadoair.com/road.php

http://www.tornado-fuelsaver.tv/tornado ... dpower.asp

 

[race24x]

OK not being a smart #*$&@ but I cant help it I thought a toilet swirled to get rid of the swirlies on the bowl LOL :ORC

 

[rupprider]

race Sounds like you need snow! Hmmmm, I'll have to research this swirling phenomenon tomorrow morning! LOL RR