valve adjustment

[nutxo]

Anyone know of any good online tutorials for adjust the valves on my 76 280?

[ZmeFly]

that someone posted that explains it pretty well and with pics

http://www.picturetrail.com/gallery/view?p=999&gid=1803105&uid=786489&members=1

[nutxo]

nice, now how do i determind the sequence for intake /exhaust?

[nutxo]

nm :-) it tells,.just not at the beginning

[ZmeFly]

good luck with your project

[nutxo]

welp,.guess ill start over from scratch:-p

that didnt go well

i hear bubbles at the bottom end when i turn the engine by hand, it that just the oil pump?

[Bambikiller240]

Originally posted by nutxo

nice, now how do i determind the sequence for intake /exhaust?

Sequence does NOT matter! So long as the "nose" (pointy end of the cam lobe) is pointing UP, you can adjust that valve. I start at the front of the engine (Cylinder #1) and adjust the intake AND exhaust valves, then rotate the cam to the proper location for Cylinder #2 and adjust BOTH valves for it, then move to #3, #4, #5, #6 cylinders.

There are only two liquids in an engine that isn't running, so it's either oil or water bubbles. Only oil should be in the "bottom end" so I hope it IS oil.

[nutxo]

what i meant was like , e, i, i, e etcetera

still not running as well as before i started, mebbe i should have just adjusted to ones that had fallen off :-p

[Bambikiller240]

Originally posted by nutxo

what i meant was like , e, i, i, e etcetera

It does not matter what order they are adjusted, only that all intakes end up with the correct gap, and all exhausts end up with the correct gap.

[nutxo]

Originally posted by BambiKiller240

It does not matter what order they are adjusted, only that all intakes end up with the correct gap, and all exhausts end up with the correct gap.

okay,.lets try again :-)

i wanted to know how to tell intake from exhaust

[Bambikiller240]

Originally posted by nutxo

okay,.lets try again :-)

i wanted to know how to tell intake from exhaust

OK, I need to make some assumptions before we go into this:

I assume that your engine is complete and installed in the car. Right? Also, I assume that you know the difference between an intake manifold and an exhaust manifold. Right? If not, stop right now and take your car to a mechanic for the valve adjustment. You are not ready to tackle this job.

All you need to do is look at the manifolds. The INTAKE valve for a given cylinder is DIRECTLY across from the INTAKE MANIFOLD RUNNER for that specific cylinder. Same for the EXHAUST valve being DIRECTLY across from the EXHAUST MANIFOLD RUNNER for that specific cylinder. You must look to see which manifold is DIRECTLY across from EACH valve you want to adjust!

Due to the design of the cylinder head and manifolds, it is not as simple as Intake, Exhaust, Intake, Exhaust, Intake, Exhaust, etc. From the front of the engine (Cylinder's #1, #2, #3, #4, etc.) working towards the firewall it starts with #1 EXHAUST, then #1 INTAKE, then #2 INTAKE, then #2 EXHAUST, then #3 INTAKE, then #3 EXHAUST, then #4 EXHAUST.......etc.

Look to see which manifold is DIRECTLY across from EACH valve and you will see what I mean.

It would be easy to spell it all out for you, but you would be better served to look at your engine and follow what I've given here to get you started. Confirm that you see what I'm talking about and apply the information to the remainder of the engine. This should get you started on learning about your engine.

If you do not have a shop manual (at least a Haynes manual, or preferably a Nissan Factory Shop Manual) please consider getting one. It will be the best money you can possibly spend to maintain your car.

[nutxo]

yup, thats what i did:D

it was nt the valves though,.I dont know if I mentioned that when i pulled the valve cover off there were a few rocker arms flappin in the breeze touching nothing , very unnerving :-)

they were set incorrectly though so im sure any other improvements will be more noticable as time passes :-)