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post #1 of 52 (permalink) Old 06-14-2013, 12:58 PM Thread Starter
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Earshave Jets and Elevation

Looking for a little feedback from y'all about jet selection for the earshave.

I'm not doing the pods, but am doing the dual input single K&N filter that others have done. Exhaust is going to be stock Dyna slip ons (baffled) and I'm leaving the belly for the time being.

I've read that a lot of folks are going with 142 mains, 42 pilots and 2 shims on the needles. Thats all fine, well and good, but there are other factors that effect performance like average temperature, elevation and humidity. I want to try and focus on the first two because I believe that they have a greater effect on performance.

I'm at around 2200ft and it averages over 100 degrees from early June through mid September (but its a dry heat....) I can always change them up for cooler weather.

I'm actually thinking about going with 140 mains and 40 pilots because of the heat (less dense at higher air temps so needs less fuel).

So, the $64k question for those who have shaved the ears: What is your elevation & average temperature?



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Coil Relay Mod
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ACCT to MCCT
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Last edited by Jakzen; 06-14-2013 at 01:00 PM.
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post #2 of 52 (permalink) Old 06-14-2013, 01:15 PM
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I am at about 2k ft above sea level. 40/140 with 2 shims.

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post #3 of 52 (permalink) Old 06-14-2013, 01:25 PM Thread Starter
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Quote:
Originally Posted by niterider View Post
I am at about 2k ft above sea level. 40/140 with 2 shims.
You're in TX too, so you get the hotter than fish grease thing. How does that combo perform for you? Does it pull well through the rpm band/throttle positions?



Mods
Voltmeter/clock/temperature gauge
HD Electra Glide Fairing
Earshave/Coastered/CA emissions - gone...
R/R relocated
Nightster seat
Tombstone taillight
Drag specialties turn signals relocated
Sportster progressive shocks... Dropped rear 1 1/2"
Progressive Fork Springs dropped front 1"
NGK plug wires and iridium plugs
Coil Relay Mod
Paint
ACCT to MCCT
Honda Rebel luggage rack
VN800 Handlebars & controls
Screamin Eagle mufflers
F&S Engine Guard & Kury highway pegs
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post #4 of 52 (permalink) Old 06-14-2013, 01:31 PM
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Easily red lines no problems.

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post #5 of 52 (permalink) Old 06-14-2013, 01:37 PM
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I run 142/42s currently with no issues at 0ft, moderate temperatures (upwards to 90f in summer).

The 40 pilot jet was too lean and would cause popping on decel no matter what I did with the idle screw.

Well, at least you have a baseline for 0ft elevation.

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post #6 of 52 (permalink) Old 06-14-2013, 01:44 PM
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I've got that setup, the single filter & I have yet to find the perfect combination.
I've tried the shims & different mains. The 42 pilots seem good. It's the full throttle I'm lacking. It Boggs the engine.

Let me know what works for you.
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post #7 of 52 (permalink) Old 06-14-2013, 02:01 PM Thread Starter
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I found a main jet correction chart on a link from somewhere on here that was based on stock jetting, but in theory, it should work for this application using a base line similar to thtanner's. I can scan and email it to anyone who wants it, since I can't seem to find the link but based on the chart, during the heat of summer, a 140 main will be a little rich (minimal) with the corrections for altitude and temp. Shims can address some things, especially for the mid range.

Kanuck, do you want the chart? based on the theory and your location dynamics, a 140 main should be close.



Mods
Voltmeter/clock/temperature gauge
HD Electra Glide Fairing
Earshave/Coastered/CA emissions - gone...
R/R relocated
Nightster seat
Tombstone taillight
Drag specialties turn signals relocated
Sportster progressive shocks... Dropped rear 1 1/2"
Progressive Fork Springs dropped front 1"
NGK plug wires and iridium plugs
Coil Relay Mod
Paint
ACCT to MCCT
Honda Rebel luggage rack
VN800 Handlebars & controls
Screamin Eagle mufflers
F&S Engine Guard & Kury highway pegs

Last edited by Jakzen; 06-14-2013 at 02:25 PM.
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post #8 of 52 (permalink) Old 06-14-2013, 02:42 PM
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Yes. Please! I'd love to try the chart.

One thing I will note is, even though we are using a K&N filter (uni-pod) there is some air restriction simply from how it sits in there. That's why it's a hit & miss for me.
The original member who came up with this version claimed to have had it worked out but when I tried his set up, I was still bogging at full throttle.

Now, with that said, in the lower gears it's not as noticeable. It's in 4th & fifth that I really notice it. I just changed out my plugs last night & I took a pic of the old ones with the intent to post them to get a consensus of a reading.
I can't judge plugs well. But to me they seem a little rich.

I wonder, does the pilot jet always suck fuel & the main adds to it? My pilot might be to large if that's the case & I haven't tried another pilot!

EDIT: Whoops. Can't send it to me without an email! lol [email protected]

Last edited by kanuck69; 06-14-2013 at 02:45 PM.
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post #9 of 52 (permalink) Old 06-14-2013, 02:56 PM Thread Starter
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Quote:
Originally Posted by kanuck69 View Post
I wonder, does the pilot jet always suck fuel & the main adds to it? My pilot might be to large if that's the case & I haven't tried another pilot!
As I understand it, the pilot affects from 1/4 to 1/2 (or so) throttle and the main is from 3/4 to WOT. As you add shims to the needle, you add fuel through the main.

I would think that if you had too big of a pilot, it would fall on its face every time you pulled away from a stop.

From that point it starts turning into gobbledygoop to me...



Mods
Voltmeter/clock/temperature gauge
HD Electra Glide Fairing
Earshave/Coastered/CA emissions - gone...
R/R relocated
Nightster seat
Tombstone taillight
Drag specialties turn signals relocated
Sportster progressive shocks... Dropped rear 1 1/2"
Progressive Fork Springs dropped front 1"
NGK plug wires and iridium plugs
Coil Relay Mod
Paint
ACCT to MCCT
Honda Rebel luggage rack
VN800 Handlebars & controls
Screamin Eagle mufflers
F&S Engine Guard & Kury highway pegs
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post #10 of 52 (permalink) Old 06-14-2013, 07:54 PM
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If youre gonna run fully baffled with the belly, you shouldnt need to rejet at all (more restrictive than stock, IMO)....after adding my Streetglide pipes (baffled, no belly), was so restrictive I had to turn the screws back IN to lean it out.....

My suggestion is to do the exhaust and air filter first...run it, then check the plug condition....its the only proper way to determine what ya need to tweak...



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