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Toyota SUV's & Trucks Discussion of Toyota Pickup Trucks and 4-Runner SUV's

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Old 08-24-2009, 01:58 PM
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Location: Albuquerque, NM
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Default Weber 32/36 carb jetting help

I live at approximately 7200 feet above sea level. I get my emissions test down in Albq. At 5200 feet.
I have a 1984 Toyota Tercel SR5 4WD wagon.
It has a 3AC 1.5l SOHC engine with about 10k miles on a full rebuild. 9 to 1 pistons
The engine has a Schneider 260 cam with specs:
Grind Number: 260F
Intake Duration (gross): 260
Exhaust Duration (gross): 260
Intake Duration (.050”): 220
Exhaust Duration (.050”): 220
Intake Valve Lift*: .429"
Exhaust Valve Lift*: .429"
Lobe Separation: 106
Intake Valve Lash: .008"
Exhaust Valve Lash: .010"
RPM Range: 1500-5500

………………………………………………………………………………..
Unfortunately the cam came back with .375 lift. I wanted the lift so am disappointed with that.
I installed a Jacobs Ultra Coil to go with the stock electronic ignition.
The Weber 32/36 dgev came with Primary Secondary
Main jet 130 / 110
Air jet 165 / 120
Idle jet 50 / 50
Emulsion tube f50 / f50

It passed federal emissions like this but had serious hesitation off idle the same opening the secondary. I found that I had vacuum leaks and have since fixed them all.
I ordered a performance jet pack from RaceTep for my altitude. It came with:
Main jet- 120 / 150
Air jet- 190 / 200
Idle jet 50 / 50
I had failed emissions with that performance pack when I had vacuum leaks.
I have the car running the best so far that I can at the following settings
Main 110 / 120
Air 200/ 190
Idle 60 / 60
But I still have some hesitation when I stab open the throttle to about 1/3 of primary. I guess that is in the transition area.
Raising the idle jets to 60 on both sides really helped with hesitation.
I am wondering if this sounds right to you and do you have any suggestions. Timing is at 8 btd.
The idle jets seem too high to me at this altitude and it feels like a 65 might improve response
Idle screw is ½ turn out and mixture screw is 2 turns out

Also do you have any suggestions on a different cam. Below is specs for two others.
Grind Number: 260-70F
Intake Duration (gross): 260
Exhaust Duration (gross): 270
Intake Duration (.050”): 220
Exhaust Duration (.050”): 230
Intake Valve Lift*: .429"
Exhaust Valve Lift*: .436"
Lobe Separation: 106
Intake Valve Lash: .008"
Exhaust Valve Lash: .010"
RPM Range: 1800-5800


Grind Number: 278F
Intake Duration (gross): 278
Exhaust Duration (gross): 278
Intake Duration (.050”): 208
Exhaust Duration (.050”): 208
Intake Valve Lift*: .435"
Exhaust Valve Lift*: .435"
Lobe Separation: 108
Intake Valve Lash: .008"
Exhaust Valve Lash: .010"
RPM Range: 2000-6000


I greatly appreciate any help you can give.
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Old 08-26-2009, 06:55 PM
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According to my google searches there are Weber experts in this forum.
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Old 08-26-2009, 09:34 PM
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Location: Casa Grande, AZ
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Quote:
Originally Posted by Gatemaster View Post
According to my google searches there are Weber experts in this forum.
Have you figured out that the Toy page is practically dead.

This was at one time the most active forum on this entire site.

Unfotunately, I think many folks have just moved on to other activities..... like survival 101.
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