Author Topic: '86 22r timing  (Read 665 times)

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Snowtoy

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'86 22r timing
« on: Sep 25, 2018, 06:45:46 PM »
Couple of questions.

I have a smog test due for an '86 22r Fed smog, going thru the tune-up/check tests, went to set the timing and

'85 FSM(book) says 5* BTDC with vacuum advance plugged, but no numbers for without it plugged

'88 FSM(digital) says 0* BTDC with vacuum advance plugged, but just has 10-14* when rechecking the timing but doesn't state it is for both.  I can't remember if the 22r's timing is supposed to change or not? If it does, what should I look into, the vacuum avance module is good, both sides hold a vacuum and move the lever on the distributor.


'90 black X-cab mod'd 3.0, 33's/4.88's, rear ARB, custom bumpers, sliders, safari rack, etc.
'91 Blue X-cab 22re, 35's/5.29's,Truetrac front, ARB rear, dual cases, and custom Safari flatbed, bumper, interior.
The money pit '87 Supra resto/mod

Gnarly4X

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Re: '86 22r timing
« Reply #1 on: Sep 26, 2018, 06:03:53 AM »
Couple of questions.

I have a smog test due for an '86 22r Fed smog, going thru the tune-up/check tests, went to set the timing and

'85 FSM(book) says 5* BTDC with vacuum advance plugged, but no numbers for without it plugged

'88 FSM(digital) says 0* BTDC with vacuum advance plugged, but just has 10-14* when rechecking the timing but doesn't state it is for both.  I can't remember if the 22r's timing is supposed to change or not? If it does, what should I look into, the vacuum avance module is good, both sides hold a vacuum and move the lever on the distributor.


Here's one of my old posts on Pirate:  https://www.pirate4x4.com/forum/toyota-truck-4runner/296685-timing-advance-22r.html

For better chances of passing emissions testing, run low octane fuel.

The idle RPM and ignition timing is a base.  Full advance is more important.  As I remember, full advance on ignition timing on my 1985 22R was around 2500 RPMs.

Let us know where you end up on full advance timing... and your emissions test.

Gnarls.
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

Snowtoy [OP]

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Re: '86 22r timing
« Reply #2 on: Sep 28, 2018, 12:21:26 PM »
Best I can tell is that the timing on a 22r isn't supposed to change, or at least not in a way that effects smog tests.

Since the hood tag is faded, I went with the '88 FSM and set the timing to just a little before 0*, bounces around 0* to 1*, but not below 0*.

Smog numbers, Max HC is 150/180 w/average 40/35, Max CO% is 1.20/1.20 w/average 0.10/0.20

Rpm......%CO2......%O2.......HC.........CO%
1000......9.3.........7.8..........35..........0.02
2448.......11.1.......5.3.........19..........0.00

All good now until '20, maybe the last snog test if I set up a Trust in NV, and transfer the truck to that Trust.

'90 black X-cab mod'd 3.0, 33's/4.88's, rear ARB, custom bumpers, sliders, safari rack, etc.
'91 Blue X-cab 22re, 35's/5.29's,Truetrac front, ARB rear, dual cases, and custom Safari flatbed, bumper, interior.
The money pit '87 Supra resto/mod

 
 
 
 
 

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