Okay, this is sort of a lame question and it's just me being lazy but...

So say you're rebuilding a d16 head, and you have all the valves and springs out of the head for cleaning, is it neccesary to keep the valves and springs arranged as per they came out exactly? I'm going to be cleaning the carbon build up off the exhuast valves, and the little bit that built up on the bottom of the intake and I'd like to just dump all the valves and springs in a strong cleaning bath. After this I will lap them and rebuild the head with new seals and all.

Is it neccessary that I keep the valves arranged the way they came out when I put them back in even though I will be lapping them? I will be planning on adjusting the valve contact off the rockers as well, so it's not like I'm going to just throw the valve's back in and hope they work. Thanks

(I haven't mixed anything up yet btw, this is just a question out of interest on my part, and somewhat lazyness haha)

 

i did my d16y8 head myself too. i kept all the valves in order just in case. i think it really doesnt matter. i grinded the valves the proper way and replaced the valve stem seals. make sure you check the springs to see if they all line up exactly by height. you should lightly sand the camshaft as well to make it smoother. i did all this when i was replacing my head gasket due to cooling problems.

 

yes it is important because the clearance on one valve is diffrent than another unless you are going to adjust them with the feeler gauge when your done, than is wouldn't matter. I believe the clearance is .07

 

Ok thanks

I'll check the height on the springs and all. I plan on calibrating the valve/rocker clearance with a feeler gauge post assembly - so that should take care of any differences. I have the factory manual so I'll varify the clearance number.

skaternak - you mentioned sanding the camshaft? I've never heard of this - are your sanding the actual lobes, or the bearing surfaces (I would suspect the later?). Thanks

 

He wasnt talking about valve lash rocker clearance, he was talking about valve stem to guide clearances which will vary if reusing the old valves and guides if you mix em up, you should measure them all anyways and replace the guides/valves if they are worn.
Check the specs in your honda repair manuals and if they are out of spec, replace them. A good head rebuilder will replace the guides and ream them to the correct size, measure the valve stems and repace any that are worn out of spec, but this alas doesn't happen everywhere.
The exhaust clearances are different to the intake, so take care to measure carefully.

 

Since it sounds like you're only going to "hot tank" the parts and not replace or machine new surfaces, I'd say you'd want to keep them labeled as to where they go. It's possible that one valve seated differently in one port than another did in another port.

Just my .02