84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

Intake questions

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Old May 12, 2018 | 09:40 AM
  #21  
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From: Enoch Utah
Nope, I never got those, but now I do, Thanks, I have a lot of reading to do
Rad will only be swinging by, not able to stay long, just to see Mr. Truck and meet up. I thought you were closer then that, you say northern AZ.
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Old May 12, 2018 | 05:18 PM
  #22  
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From: Enoch Utah
L5wolvesf,
Ok, took it apart
This is what I have
Idle jets
Primary 55
2nd 50
Main Jets
Primary 140
2nd 135
accel pump Jet
50
Air correction jet
Primary 165
2nd 160
Is there anything else you need to know?
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Old May 12, 2018 | 07:17 PM
  #23  
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From: Northern AZ
Originally Posted by NYHumpinUtah
Nope, I never got those, but now I do, Thanks, I have a lot of reading to do
Rad will only be swinging by, not able to stay long, just to see Mr. Truck and meet up. I thought you were closer then that, you say northern AZ.
I am in Northern AZ - a town named Cottonwood.


Originally Posted by NYHumpinUtah
L5wolvesf,
Ok, took it apart This is what I have
Idle jets Primary 55 2nd 50

Main Jets Primary 140 2nd 135

accel pump Jet 50

Air correction jet Primary 165 2nd 160
Is there anything else you need to know?
Like you said "I have a lot of reading to do". I just looked at the LCE Altitude site and first at the Idle jets (it's gotta idle when you break the new engine in) and the idle jets in the LCE jet kit.
The idle jets in the kit will be useless - you need to step down 1 size since you're at a bit over 5k'. So you'll probably gonna need: Primary 50 Secondary 45 - the LCE jet kit doesn't have a 45 idle.
Do you get how I got there? If you do - do the same with your Mains and airs.

And, that is only estimating changes for altitude - you're still possibly going to have changes based on your particular engine set up.

But, the main part of the way to determine jetting is to actually run the car and do plug checks after each change - ONLY ONE CHANGE AT A TIME.. You can't since the truck isn't done. So at the moment you can only prepare yourself for what changes might be needed.

Also, do you have and use Excel? I've always recorded my tuning changes on Excel.

Last edited by L5wolvesf; May 12, 2018 at 07:18 PM.
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Old May 12, 2018 | 07:50 PM
  #24  
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From: Enoch Utah
Do you get how I got there?
I have no idea how you got there. Did i miss something? Are you saying step down 1 on all the jets?
So if the kit doesn't have the jets i need then what?
BTW, I did not enjoy taking it apart, my fingers are too big and fat for those tiny parts
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Old May 12, 2018 | 08:02 PM
  #25  
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From: Northern AZ
Originally Posted by NYHumpinUtah
I have no idea how you got there. Did i miss something?
Have you read this and understand it? http://www.lcengineering.com/LCTechP...20Altitude.pdf
It explains which direction to go for the jets based SOLELY on altitude - no other factor(s).

Originally Posted by NYHumpinUtah
Are you saying step down 1 on all the jets?
No that LCE link tells you how many steps (up or down) for altitude.

Originally Posted by NYHumpinUtah
So if the kit doesn't have the jets i need then what?
You may need to buy individual jets.

Originally Posted by NYHumpinUtah
BTW, I did not enjoy taking it apart, my fingers are too big and fat for those tiny parts
The parts don't change size so you'll need smaller fingers.
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Old May 12, 2018 | 08:24 PM
  #26  
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From: Enoch Utah
The parts don't change size so you'll need smaller fingers.
LOL
I'll read it tomorrow, kinda wiped out tonight and my head is hurting
Later
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Old May 12, 2018 | 08:37 PM
  #27  
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From: Enoch Utah
Another thing, are the jets interchangeable, like main primary and main secondary? Same for idle jets, and air correction?

Last edited by NYHumpinUtah; May 12, 2018 at 09:56 PM.
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Old May 13, 2018 | 07:27 AM
  #28  
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From: Northern AZ
Originally Posted by NYHumpinUtah
Another thing, are the jets interchangeable, like main primary and main secondary? Same for idle jets, and air correction?
On the 32/36 the types of jets (idle, main, a/c) can be used in either the primary or secondary position. Just the hole sizes are different.
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Old May 13, 2018 | 06:57 PM
  #29  
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From: Enoch Utah
P.S. Is there a diagnostic page in your 84 FSM for the HAC High Altitude Compensator? I want to play with one that I have.[/QUOTE]
This is what I found


Last edited by NYHumpinUtah; May 13, 2018 at 07:03 PM.
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Old May 13, 2018 | 07:49 PM
  #30  
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From: Northern AZ
Originally Posted by NYHumpinUtah
P.S. Is there a diagnostic page in your 84 FSM for the HAC High Altitude Compensator? I want to play with one that I have.
This is what I found

[/QUOTE]

Cool thanks
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