5M-E valve clearance adjustment

[MS112]

Hello,

I have searched the internet and this forum for the order which you adjust the valve clearances on a 5M-E engine. Unfortunately, I have misplaced my manual and I was going to do the job tomorrow. The engine is in a Toyota Crown, if there are tuning differences between different models.

If anyone could kindly post the order it is done, it will be much appreciated.

Cheers,
Brendon.

[petergoudie]

Just make sure one valve is fully open then adjust the valve next to it which will be fully closed. Work your way from front to back or vice versa.

[allencr]

post the order it is done,

With push-rods & V8's, it wasn't apparent so the 'order' business was useful, but an OHC is usually very obvious, so like what the above recommends - just do it.!
I don't know what a 5M is. Check every one available and turn it over to get to the rest. With the starter & plugs in, it'll always stop at 1 of the 4 compression strokes. I'd just check'um - all those that aren't anywhere near the lobe, write it down, hit the starter or pull on a belt or turn the Alt. by putting a screwdriver in its pulley's fan blades and repeat.

On a straight 4 like a Peugeot 404 & 5 with the usual 1342 firing order, it was
when #1 exhaust is open, check/adjust the 3 intake & 4 ex.
when #3 exhaust is open, check/adjust the 4 intake & 2 ex.
when #4 exhaust is open, check/adjust the 2 intake & 1 ex.
when #2 exhaust is open, check/adjust the 1 intake & 3 ex.
This order/sequence doesn't work if its cam is anything but very low performance/stock.

[MS112]

Cheers guys, I went searching again and instead of finding the 5M-E manual, I came across the 2M Engine Group manual. Essentially same head setup as a 5M.

Turn crankshaft until cylinder no.1 is at top dead centre of compression stroke.

Alternatively, the book states:
"Align the valve timing mark (4 mm diametre hole) on the camshaft bearing cap no.1 with the "V" groove on the camshaft flange, AND the "V" groove of the damper and the "0" (Zero) mark of the timing chain cover must be in line".

The order each valve is adjusted is thus:



//edit

Ah, thanks to TelMS123 on ClassiCrown (forgot they had forums), the cold valve clearances are as follows:

Intake: 0.2mm
Exhaust: 0.3mm

Thanks for your advise anyway. I'll be able to find this thread if I lose the manuals again.

[petergoudie]

One one of my front wheel drive cars I would remove the plugs; put it into gear; jack one wheel up and turn it to rotate the engine; then adjust the valves..

[MS112]

Yeah, as allencr pointed out, it is not essential to know the "order", as I realised after performing the adjustment yesterday. Any valve which the cam is currently at the base can be adjusted.

However, with this "order" in your mind, you are able to adjust all valves with only two revolutions of the engine.

Cheers

[TTCorona]

Can anyone tell me what the hot valve clearances for the 5m-e should be?
Got the cold ones from above but just wanted to check it when its hot...

[cambelt]

Just let it cool down as with a 5M by the time you pull all the hoses off the top its cool anyway. If you have noisy tappets after setting them reset them at 7 and 11 thou cold .
Dave

[MS112]

What cambelt1 said. I tried to do it hot but unless you are really quick you will just end up with un-even adjustments due to the fact the engine is continously cooling.

I am interested to know how much the valve timing is affected by incorrectly set valve clearances.

I noticed when I did the first valve adjustment, the last owner seemed to have set it back to front, with the exhaust set to 0.2mm and the intake set to 0.3mm

I swear it gained some extra torque starting at the 2000RPM mark instead of 2500RPM after the adjustment, probably just my mind making things up.

I attribute any torque gain to the fact the intake valves should be opening slightly earlier.