Author Topic: 1980 20r getting rid of emissions  (Read 4033 times)

0 Members and 1 Guest are viewing this topic.

Yotaoverland

  • Offline Rock Master
  • ***
  • Turtle Points: 0
  • Male Posts: 168
  • Member since Feb '15
  • Crawling with Marlin
1980 20r getting rid of emissions
« on: May 04, 2015, 06:28:15 AM »
I live in Texas and happened to get my hands on a California truck. I don't want or need all of the emissions stuff on the truck. I'm wondering what vacuum
lines are essential to the running of my truck and what can go? I took the charcoal canister, and all of the EGR stuff off. Got rid of most of the vacuum lines and hard lines that ran along the valve cover. I assume I just need to keep the vacuum lines for the distributor and block off the old vacuum ports? I plan on getting a Weber carb, should I keep or change out the stock distributor?
here are some photos of how it currently sits.



1980 pickup LWB
22r
L-52 5spd
Detroit tru-trac
Expedition truck.

H8PVMNT

  • Offline Silver Turtle Award
  • *
  • Turtle Points: 451
  • Male Posts: 3,502
  • Member since May '07
  • I'LL NEVER MAKE IT...
Re: 1980 20r getting rid of emissions
« Reply #1 on: May 04, 2015, 07:20:48 AM »
I'm sure someone else will chime in.  The easiest way would be to use a weber but it looks like you're doing OK to me.  I would keep using the stock distributor, no reason to change that.  EGR and air pump block offs, plug your unused ports and you should be good to go.  There are a bunch of good write ups on de-smogging the 22r carb.  Here is one: 

http://www.yotatech.com/f114/22r-desmog-tutorial-264405/

 20r carb is pretty similar, maybe even a few less things to mess with.
I would rather wake up in the middle of nowhere than in any city on earth.
Steve McQueen

"Except for maybe Seattle."  -H8PVMNT

"I plan to hit 300k in this truck"  :)bestgen4runner

 "I'm jealous of your shop. It has concrete and doesn't smell like pickles like the old shop  "  300K

Yotaoverland [OP]

  • Offline Rock Master
  • ***
  • Turtle Points: 0
  • Male Posts: 168
  • Member since Feb '15
  • Crawling with Marlin
Re: 1980 20r getting rid of emissions
« Reply #2 on: May 04, 2015, 07:24:25 AM »
I'm sure someone else will chime in.  The easiest way would be to use a weber but it looks like you're doing OK to me.  I would keep using the stock distributor, no reason to change that.  EGR and air pump block offs, plug your unused ports and you should be good to go.  There are a bunch of good write ups on de-smogging the 22r carb.  Here is one: 

http://www.yotatech.com/f114/22r-desmog-tutorial-264405/

 20r carb is pretty similar, maybe even a few less things to mess with.

Oh, awesome. Thanks for the info!

After getting it all wired up again, I can't seem to get it started. So I thought maybe I was missing an important vacuum line.
1980 pickup LWB
22r
L-52 5spd
Detroit tru-trac
Expedition truck.

H8PVMNT

  • Offline Silver Turtle Award
  • *
  • Turtle Points: 451
  • Male Posts: 3,502
  • Member since May '07
  • I'LL NEVER MAKE IT...
Re: 1980 20r getting rid of emissions
« Reply #3 on: May 04, 2015, 10:06:21 AM »
I could never get that GM igniter mod to work on my 20r.
I would rather wake up in the middle of nowhere than in any city on earth.
Steve McQueen

"Except for maybe Seattle."  -H8PVMNT

"I plan to hit 300k in this truck"  :)bestgen4runner

 "I'm jealous of your shop. It has concrete and doesn't smell like pickles like the old shop  "  300K

Yotaoverland [OP]

  • Offline Rock Master
  • ***
  • Turtle Points: 0
  • Male Posts: 168
  • Member since Feb '15
  • Crawling with Marlin
Re: 1980 20r getting rid of emissions
« Reply #4 on: May 04, 2015, 10:10:42 AM »
I could never get that GM igniter mod to work on my 20r.

Is that what mine has? The previous owner pretty much hacked the whole truck. I had to re-wire the entire thing. I've found ghetto-rigged "fixes" all over the truck. So I'm not sure what's stock and not.
1980 pickup LWB
22r
L-52 5spd
Detroit tru-trac
Expedition truck.

209toyota1

  • Offline Dusty Trails
  • *
  • Turtle Points: 0
  • Male Posts: 6
  • Member since May '15
  • Toyota engine builder
    • Buy me a beer
Re: 1980 20r getting rid of emissions
« Reply #5 on: May 04, 2015, 10:22:44 PM »
Run a weber and you'll have the 2 vac lines to the distributor and 1 to the break booster and that's it. I have some nice pics of some desmogged 20Rs if you want some. I also have a nice diagram for the GM igniter if anyone needs one they work sweet.
209toyota1.com 209-869-6821

Yotaoverland [OP]

  • Offline Rock Master
  • ***
  • Turtle Points: 0
  • Male Posts: 168
  • Member since Feb '15
  • Crawling with Marlin
Re: 1980 20r getting rid of emissions
« Reply #6 on: May 05, 2015, 03:33:32 PM »
Run a weber and you'll have the 2 vac lines to the distributor and 1 to the break booster and that's it. I have some nice pics of some desmogged 20Rs if you want some. I also have a nice diagram for the GM igniter if anyone needs one they work sweet.

I'd love to see some photos. So do I have a GM igniter?
1980 pickup LWB
22r
L-52 5spd
Detroit tru-trac
Expedition truck.

H8PVMNT

  • Offline Silver Turtle Award
  • *
  • Turtle Points: 451
  • Male Posts: 3,502
  • Member since May '07
  • I'LL NEVER MAKE IT...
Re: 1980 20r getting rid of emissions
« Reply #7 on: May 07, 2015, 08:49:00 AM »
Yes thats the little black thing on your driver's fender.  There's a lot of good tech on it if you search. Toyota owner mag did an article on it too.
I would rather wake up in the middle of nowhere than in any city on earth.
Steve McQueen

"Except for maybe Seattle."  -H8PVMNT

"I plan to hit 300k in this truck"  :)bestgen4runner

 "I'm jealous of your shop. It has concrete and doesn't smell like pickles like the old shop  "  300K

79coyotefrg

  • Rock Ninja
  • Offline Gold Turtle Award
  • *
  • Turtle Points: 1420
  • Male Posts: 22,619
  • Member since May '02
  • Solid axle Toys Rule ! ! !
    • HotSprings Superlift ORV park
Re: 1980 20r getting rid of emissions
« Reply #8 on: May 18, 2015, 09:30:52 PM »
best thing to do is get rid of that anemic 20R carb.   and the very restrictive 20R exhaust.  a weber and a header will light that 20R up like a street demon.   later on we can talk about a cam to liven it up even more. 

distributor?  I guess the dual diaphragm distributor on a 20R is a california thing but if you can find the non cali 20R distributor with the single vac line it does help.
AR-TTORA founder 22R bored.060,LCE stage II race cam http://pure-gas.org/    32/36weber, :driving: Marlin 1200 NON ceramic clutch, L52SHD+dualcase #2919, cable-locker, Yukon 5.29 gears, 35's, Allpro ebrake, front springs, and high steer, F150rears    RIP Nitro 9-29-07 :(  I sure miss him :down: MarlinCrawlerInc IS NOT affiliated with TrailGear in any way

 
 
 
 
 

Related Topics

1 Replies
1561 Views
Last post Jul 23, 2004, 09:43:44 PM
by 94toytruck
126 Replies
11157 Views
Last post Apr 08, 2005, 04:48:44 PM
by 86 4runner
31 Replies
4600 Views
Last post Apr 04, 2008, 04:58:10 AM
by wflaw45
8 Replies
1317 Views
Last post Mar 20, 2008, 09:17:39 AM
by toby
2 Replies
946 Views
Last post Jan 24, 2011, 04:17:57 AM
by Muddytazz