Obmi

I am confused. Do I adjust the valves with the engine hot or cold? Or do I adjust them cold and then adjust them again when the engine is hot? I am kind of thinking two times first cold, so nothing hits then warm to fine-tune them. I have only adjusted them cold when I first put the engine back together. But I'm hearing that tapping sound some people are talking about. I have used a mechanics stethoscope and I have not heard it in the block just the Rocker arm cover and stronger in the rocker arm cover bolts.

I have already driven it 80 miles and a lot of idling when I worked on stuff. I hope I didn't mess anything up.

Sorry i meant to post this in the "86-95 Trucks & 4Runners" But here is fine too. So i will just leave it here.
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This is from the FSM:

6. ADJUST VALVE CLEARANCE
(a) Set the No. 1 cylinder to TDC/compression.
• Turn the crankshaft with a wrench to align the
timing, marks at TDC. Set the groove on the
pulley at the ”0” mark position of the chain cover.
• Check that the rocker arms on the No. 1 cylinder
are loose and the rocker arms on No. 4 cylinder
are tight.
If not, turn the crankshaft one complete revolution
and align the marks as above.
(b) Adjust the clearance of half of the valves.
Adjust only the valves indicated by arrows as
shown.
Valve clearance (Cold):
Intake 0.20 mm (0.008 in.)
Exhaust 0.30 mm (0.012 in.)
HINT: After installing the cylinder head, warm up the
engine and adjust the valve clearance.
Use a thickness gauge to measure between the
valve stern and rocker arm. Loosen the lock nut
and turn the adjusting screw to set the proper
clearance. Hold the adjusting screw in position
and tighten the lock nut.
Torque: 25N–m (250kgf–cm, 18ft–lbf)
Recheck the clearance. The thickness gauge
should move. with a very slight drag.

wallytoo

iTrader: (1)

it is "typical" to adjust valve clearance on a hot/warm engine for best results. on my '48 dodge 1.5 ton, i adjust the valves with the motor hot AND running.

Obmi

How do you adjust them with the engine running?

wallytoo

iTrader: (1)

not the toyota, the dodge. the dodge is a flathead, meaning the valves are in the block. there are access panels on the side of the block.

RJR

22re's are adjusted hot, 3.0's are adjusted cold.

It's basically impossible to adjust a 3.0 hot because it takes the better part of an hour to get the plenum off just to get to the valves. And then the actual adjustment procedure involves swapping shims and is fairly time consuming. By the time you get to the last one things will be stone cold anyway.

You can adjust the valves on a Chevy V8 while the engine is running if you don't mind a little oil flying around. Not possible on a Toyota.

Obmi

I have a 1986 22re thanks I will get on that this weekend. Will it cause any damage if i adjusted them cold and have been running it? They should be really close to spec anyway right?

I sure how i did not mess up my engine.

GDR

You should be fine. The manual if pretty confusing. They give you specs to adjust it cold. Then if you look in the maintenance section they give you hot inspection specs which are the same. So hot is where you want to set them but of course you have to start cold on a new build. Both are the same at .008 and .012