My 85 fsm says 0, How to keep your yota alive says 5, many forum posts say 0, the sticker under my hood says 5...

Discuss?

 

its a carb vs efi thing.

 

I believe the 22r (carb) is timed at 0 and the 22re (efi) is timed at 5. I've read before that the 22re will overheat when timed at 0 (I idk if that is actually true or not.)

 

Well, I think the 22r up to 84 is all the same (well 81?-84). 85 sees the 22re and maybe a revamped 22r? All I know is that my truck is bone stock, I bought it with 84k og miles. And I'm certain that I'm the only person to have ever tinkered with it. So I place a lot of weight on the factory sticker, which says 5deg. The fsm everyone uses for this brief window of truck is the 85 manual. I've seen two other sources that backup my claim of 5deg for 83/84 carbed trucks. The sources also state 0deg for 85 model year carbed trucks. So something occurred in that year, I believe, that caused this change.

I'm not a true yota head in that this is the first one I've owned. I know that at this point my truck prefers 5deg, however, it has some issues. My vacuum advance seems to be malfunctioning and until a few days ago my air gap was WAY off.

But again, I'm sticking with the factory sticker, the info in "how to keep your toyota alive for the complete idiot", and the improved mpg and performance. For now. I'd love to see a fsm for the 84 year because I think things changed 84/85. This is all conjecture and I'm an idiot, FYI.

 

ACK! I just reread the HTKYTAFCI book and it does states 0deg. It says the 84 20r (did they make a 20r those years?) is 5deg. And the 22r/e's are both 0...now I'm drunk AND confused...

 

Drinking and reading repair manuals isn't good for anyone.

The '88 FSM says 22R @ 0 with whatever vacuum lines plugged, 22RE @ 5BTDC with whatever diagnostic terminals jumped. The 22RE, when timed that way, when you un-jumper the diag. terminals it goes around 12BTDC. Maybe the 22R with vacuum lines connected goes to 5BTDC?

You could just set it at 5BTDC and if it knocks set it to 0.

 

Mine is a 84 pickup and I just go by what's on the truck from the Toyota factory with no problems unless I'm at high altitude and then I just Advance a few degrees and then re adjust when I get back to sea level



Sent from my ADR6400L using YotaTech

 

I'll post a pic of my sticker when I can find my other shoe...

 

83, 85, 88, and 93 FSM verified:

81-84 22R 5° BTDC @ Max. 950 rpm (w/ vacuum advancer OFF)
85-88 22R 0° TDC @ Max. 950 rpm (w/ vacuum advancer OFF)
89-92 22R ?° @ ??? rpm (w/ vacuum advancer OFF)

85-95 22R-E 5° BTDC @ idle(750 rpm) (T/TE and E1 short circuit, transmission in neutral)

Needless to say, the sticker under the hood is ALWAYS right.

 

Sticker under the hood is where to start with timing. All are unique and run better with slight tweaks.

:wabbit2:

 

The sticker on my '84 Pickup says 5 degrees at 950

 

I'd have to sign up somewhere to post a pic, suffice to say...it says 5 and it runs like a top there. Just odd that's there's conflicting info.

 

Then you have to consider the engines (like mine) equipped with the HAC (High Altitude Compensation). Then the 22r timing is 8 degrees at 800 when checked at low altitude and 13 degrees when checked above 4,000 feet.