Author Topic: Jets EV27  (Read 2763 times)

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Online ecir50

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Re: Jets EV27
« Reply #75 on: February 13, 2018, 08:27:39 PM »
I was just joking.  Did your AEM come with a lambda faceplate?

Offline thumper 823

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Re: Jets EV27
« Reply #76 on: February 13, 2018, 08:31:37 PM »
I cant remember, But I am pretty sure it did, so am probably getting the translation anyway.
At this point, it does not matter
as i am going the dual set up.
I would love to see a pic of your set up.
Please post it?
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline speedzter

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Re: Jets EV27
« Reply #77 on: February 14, 2018, 01:53:39 AM »
You don't need a dual AFR meter, just two ports in your exhaust.


Offline thumper 823

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Re: Jets EV27
« Reply #78 on: February 14, 2018, 02:02:19 AM »
Pretty sure I will need a 02 in each exhaust pipe to get a correct reading right?
KOOL set up you have!
Is that for fuel infection?
Programmable on the run?
However I do like the permanent gauge setup  I have.
« Last Edit: February 14, 2018, 03:24:51 AM by thumper 823 »
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline speedzter

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Re: Jets EV27
« Reply #79 on: February 14, 2018, 02:53:56 AM »
It's a single channel Innovate LM2 data logging AFR meter.
I use an inductive plug lead clamp to log RPM.
Good old Mikuni 48mm fitted to that bike !
I always tune the front cylinder first, get it close, then move the sensor to the rear.

Offline 98fxstc

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Re: Jets EV27
« Reply #80 on: February 14, 2018, 03:33:18 AM »
I have the dual channel Innovate LM2
oxygen sensor in each header pipe with inductive pickup for RPM
I thought the single channel was LM1
If you are going to buy one , get the LM2 and two sensors
doing one cylinder only, or one cylinder at a time doesn't make sense

Offline thumper 823

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Re: Jets EV27
« Reply #81 on: February 14, 2018, 03:33:34 AM »
I have tried two carbs
The CV and HSR.
Everyone brags about the versatility of the HSR-
 It had some issues that were just eating up my schedule for the Sturgis run.
Perhaps I will get back to it.
The CV stays steady and more even, and as I approach the faster speeds it runs fatter where this bike needs it.
I would not ever know this if tunning by cave man plug check.
Going over high MTN passes the carb does compensate.
A livable situation for a wannabee racer and a touring bike all in one.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline speedzter

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Re: Jets EV27
« Reply #82 on: February 14, 2018, 04:27:35 AM »
I thought the single channel was LM1
doing one cylinder only, or one cylinder at a time doesn't make sense

The LM1 is the older generation. LM2 is available dual or single channel.

Tuning one cylinder at a time is not ideal, but at the price for the dual channel, I'll put up with the inconvenience .
I've used both CV and mechanical slide, I like to be in control of what the slide does, and like
the way they tune.

Offline turboprop

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Re: Jets EV27
« Reply #83 on: February 14, 2018, 04:30:38 AM »
Curious how one tunes both cylinders of an engine with a single carb?

Offline thumper 823

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Re: Jets EV27
« Reply #84 on: February 14, 2018, 08:04:12 AM »
Curious how one tunes both cylinders of an engine with a single carb?

I have always said its a waste of time too.
So just to prove I am right or wrong I will find the difference between front and rear.
One person on here said they machined the manifold to aim at the rear and milled more of the rear head .
However, i want to know what the number difference is.
I am betting mine at least is not off enough to screw with.
To date-
Here and other forums
I have asked over and over what their numbers were so as to address this.
I want a pic!
Keep in mind- there are a lot of armchair experts that have not ever done anything but full of advice.
repeating stuff is EZ
We all know the front runs leaner or the rear fatter whichever ..there should be an equal average  .
What is it?
« Last Edit: February 14, 2018, 08:14:16 AM by thumper 823 »
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Offline Coyote

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Re: Jets EV27
« Reply #85 on: February 14, 2018, 08:07:40 AM »
Curious how one tunes both cylinders of an engine with a single carb?

Yeah I'd like to understand that as well.
I feel the need... for twisties with speed.

Online ecir50

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Re: Jets EV27
« Reply #86 on: February 14, 2018, 08:27:46 AM »
Curious how one tunes both cylinders of an engine with a single carb?

Yeah I'd like to understand that as well.
that's why I said keep what he has, not likely he would tune his bike with different blends fuels either with a carb. Ill get a pic for you later.

Offline thumper 823

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Re: Jets EV27
« Reply #87 on: February 14, 2018, 08:33:58 AM »
Curious how one tunes both cylinders of an engine with a single carb?

Yeah I'd like to understand that as well.
that's why I said keep what he has, not likely he would tune his bike with different blends fuels either with a carb. Ill get a pic for you later.

Nothing against ya,or anyone here,  a pic of the difference would be appreciated and the mods you are running too, please.
I have had some forum experts (not just here) tell me i will not ever know what is going on, which is true, but it cant be that far out.
When pressed about their set up,  i have never got an answer what their numbers were or the bungs in the pipes.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Online ecir50

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Re: Jets EV27
« Reply #88 on: February 14, 2018, 08:43:14 AM »
Bike is basically stock with a RB Racing pipe that has the bung just in the front pipe, the bung is a few inches below the front flange.   

Offline turboprop

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Re: Jets EV27
« Reply #89 on: February 14, 2018, 09:38:38 AM »
Curious how one tunes both cylinders of an engine with a single carb?

I have always said its a waste of time too.
So just to prove I am right or wrong I will find the difference between front and rear.
One person on here said they machined the manifold to aim at the rear and milled more of the rear head .
However, i want to know what the number difference is.
I am betting mine at least is not off enough to screw with.
To date-
Here and other forums
I have asked over and over what their numbers were so as to address this.
I want a pic!
Keep in mind- there are a lot of armchair experts that have not ever done anything but full of advice.
repeating stuff is EZ
We all know the front runs leaner or the rear fatter whichever ..there should be an equal average  .
What is it?

What I have seen on my bikes (carbureted) is that the rear cylinder is typically 0.2 - 0.3 richer than the front. On my dual Channel Wego the difference is clearly displayed on the log sheet.

As for the armchair experts, there are too many here that have not done anything but read stuff online and somehow feel empowered to chime in with their 'expert opinions'. It is what it is. I have learned to separate the signal from the noise.

Online ecir50

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Re: Jets EV27
« Reply #90 on: February 14, 2018, 09:53:06 AM »
That Dual Channel Wego looks nice especially with the option to log the data with being waterproof a plus.

http://www.daytona-sensors.com/wego--iii---wego--iv---dual-channel-displays.html


Offline turboprop

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Re: Jets EV27
« Reply #91 on: February 14, 2018, 10:36:21 AM »
It uses the slower 4.2 wide band sensor, but for a carb'd engine, the faster speed is not really useful. I have a tech input hooked up to it, but have given some thought to adding either a sensor for either head or exhaust temp as that would really help with optimizing  the various timing cells.

Online ecir50

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Re: Jets EV27
« Reply #92 on: February 14, 2018, 10:42:41 AM »
Yes I did notice the 4.2, see no problem there it used to be the go to sensor.

Offline Durwood

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Re: Jets EV27
« Reply #93 on: February 14, 2018, 10:44:11 AM »
On carbed bikes I sample both front and rear with a DJ AT-110 module that's hooked to the stack via a can to can cable for on screen monitoring, it works really well.

Offline thumper 823

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Re: Jets EV27
« Reply #94 on: February 14, 2018, 10:47:39 AM »
That's what I am thinking too.
The rear will be richer but not by a whole number, just a couple tenths
However, after the wrestling contest and with my again revamped heads I will recalibrate the
fire and see what is going on .
My heads are getting welded as I write, The answer will be blowing in the wind for a while, as there is snow on the ground here, and I have lots to do on the evolution  for this season..
I think the NEXT  time this subject comes up I and all of us should say:
"Show a pic of your set up or shut up, and sit in the armchair and bother someone else with all your expert advice!"
That is going to be my mantra as -TOOooooooo many that have done nothing have all the advice.
D Troop 3/5, - C/16 ,162AHC, Mekong delta.
Amateur engineering with bad math.

Online ecir50

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Re: Jets EV27
« Reply #95 on: February 14, 2018, 10:54:33 AM »
No sense getting worked up, you have to read between the lines, its a forum and will never be avoidable. Where's your pic lol. 

Offline 1FSTRK

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Re: Jets EV27
« Reply #96 on: February 14, 2018, 10:55:13 AM »
On carbed bikes I sample both front and rear with a DJ AT-110 module that's hooked to the stack via a can to can cable for on screen monitoring, it works really well.


 :up: :up:

I just bothered Vic on his lunch hour to send me an example of a carbed bike that he dual sampled on the dyno.

SE air Cleaner
Slip-ons
CCP Fr 200   Re 200
46 Pilot
Needle one shim
Main 180
I do not think you would want to ride this very long sampling just the front cylinder.

"Never hang on to a mistake just because you spent time or money making it."

Online ecir50

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Re: Jets EV27
« Reply #97 on: February 14, 2018, 11:00:40 AM »
one should log the bike in real world conditions to get a fair assessment on the rear cylinder.

Online ecir50

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Re: Jets EV27
« Reply #98 on: February 14, 2018, 11:08:11 AM »
One crappy pic I have.


Offline 1FSTRK

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Re: Jets EV27
« Reply #99 on: February 14, 2018, 11:08:41 AM »
No-
I am going to the dual set up after all this :
The argument that one cylinder is so far off, that AFR is so inaccurate. (*edit- upon some research, the AEM compensates and translates)
I now want to know the real story.
I am a life learner and right now this argument is raging on several forums at all times..
For me, I want the one real answer.
After all the money I have strewn across this bike and the floor it occupies what is another 400 bucks?
I am moving my ports this season, going to 50 deg cut, and a bunch of other crap.
The little Evo is in an evolution of its namesake with me .
I want the truth.

This was your best post to date.
If you actually do this you will be better off for it.
Now how are you going to optimize your ignition timing?
"Never hang on to a mistake just because you spent time or money making it."