Another valve setting question........curious
 

If you read enough, there is one common descrepancy in all the different valve setting techniques from Comp Cams to Friendly Freddies Speed Depot.... everybody agrees that (SB Chev) when using the EO-IC method, set the INTAKE when the exhaust BEGINS to open......now the EXHAUST, the descrepancy---set the Exhaust when the intake just begins to close or when it is almost closed ??? Anyone ever noticed that or have a comment ???

Re: Another valve setting question........curious
 

You set the exhaust lash as the intake valve just closes, as in when the intake valve is almost on the seat.

Re: Another valve setting question........curious
 

With firing order 18436572, I checked the Mopar chart vs. base circle and it works very well:
TDC #1 firing, 2i, 8e
rotate 90 deg. 1i, 4e
90 deg. more, 8i 3e
90 deg. 4i, 6e
90 deg (#6 firing), 3i, 5e
90 deg. 6i, 7e
90 deg. 5i, 2e
90 deg, 7i, 1e

Re: Another valve setting question........curious
 

90 degree method does'nt work well with unsymetrical lobes or inv.radius lobes
ex opens set in/ in almost close set ex will work with anything as long as you rotate engine direction it runs.
Mike Taylor 3601

Re: Another valve setting question........curious
 

Definitely x2 with some of today's race cams. You can always set one cylinder int & exh with this accurate method and check the lash the old Mopar sequence way to see if you really need to do it this way or your particular grind doesn't require it.

Re: Another valve setting question........curious
 

EO/IC is the method every professional engine builder and race team uses to set/check valve lash regardless of lobe or lifter type.

Go the the Pro Stock pits immmediately after a round of qualifying, walk over to your favorite Team's trailer/pit and watch them check their valve lash, one cylinder at a time, using the EO/IC method.

Re: Another valve setting question........curious
 

My intakes are loosest when my exhausts are almost fully open. My exhausts are loosest when my intakes just start to close. Lobe separation angles have some influence there too.

Re: Another valve setting question........curious
 

How do you know this to be fact? Do you know every professional engine builder? I know several and each one seems to have their own quirk on how they lash valves. I lash my V6 stuff differently from my old V8 stuff,saying EO/IC is a very vauge explanation....how far open?....How far closed? Heck me and my brother who raced together for years, lashed valves differently. As with many things everyone seems to develope their own "style" of doing things. I believe the procedure I wrote, to be the most accurate way of setting lash...some may disagree that's OK it has worked for me thus far. Joe

Re: Another valve setting question........curious
 

On my cam, the Mopar sequence seems to adjust a valve when the lifter is at the center of the base circle--how could that be on a ramp? Maybe my cam is too small, lol.

Re: Another valve setting question........curious
 

The most important thing is to make sure you are doing the exact same thing each time you check and adjust the lash. With the Jesel rockers there should not be any change in lash when you check your rockers once all of the parts have been "run in". If something is loose then you have a problem. This is for super stock style engines. I adjust mine using the degree markings on the balancer to make sure I am checking the vales at the exact same point in the engine rotation. Its not so much the process of how they are set. They need to be set consistently the same. That also goes for trying different lash settings. You just need to find a method that you are comfortable with and stick to it.

Re: Another valve setting question........curious
 

Mike I agree 100%. What works in 1 case may not in another. It's like saying everyone runs 90 square jets and 40 degrees of timing, works on some but not all. Joe

Re: Another valve setting question........curious
 

You guys need a P & G valve gapper tool, the old timers will remember

Re: Another valve setting question........curious
 

Still have one.

Re: Another valve setting question........curious
 

Remember this? I guess when a tool came in a wooden box...it's OLD!!!

Re: Another valve setting question........curious
 

SAE was who came up with the "how to" on setting valves. Seems to be more accurate when you set them this way.

Watched dad win $$$ setting valves this way/

Re: Another valve setting question........curious
 

Yep. Have the box and adapters.

Re: Another valve setting question........curious
 

The object is to make sure the cam lobe is on the base circle

Setting the intake valve when the exhaust is openings assures that the cylinder is at the beginning of the exhaust stroke and it's intake lobe is closed and on the base circle.
Setting the exhaust valve when the intake is closing assures that the cylinder is at the end of the intake stroke and it's exhaust valve is closed and on the base circle.
I have found this works on every four stroke engine from a Briggs &Stratton to blown hemi.regardless of the camshaft used.
I know a lot of guys use the "Mopar hood sticker method" but Keep in mind that most modern camshafts have more duration & overlap than those 70's Mopar cams.

Re: Another valve setting question........curious
 

On a fresh setting I always set the intakes first by watching the ex. pushrod just start to lift. That way you are always assured that when you are watching the intake close (because it is already set) you are really watching it go to the correct part of the lobe to be in the right place to set the ex. I also follow the firing order. You only have to rotate the crank 1/4 of a turn to be in the correct place for the next, in the firing order, cylinder. The 1/4 turn works for both intake and ex.
As stated earlier, be very careful about setting valves with the lifter off or past the base circle. If you do you had better "Know Your Cam Lobe"
Ed you have a PM

Re: Another valve setting question........curious
 

Thanks Adger!

Re: Another valve setting question........curious
 

Got two boxes the one I had and the one my partner had lot of adapters and the sleeves also both kits like new also a lot of the original paper work and catalogs

Re: Another valve setting question........curious
 

Was valve gapper, tool that shows lash on dial indicator?
Here in Ky. we usaully use wore out hack saw blades to set valves.LOL
Biggest problem I see is guys won't check valves,I tell customers to check every week,that they should'nt have to adjust them,but as preventive mantainance,and look at springs,retainers,etc.
Then a couple years later they tell me or hear them tell how good engine is and how they never even had a valve cover off.
Mike Taylor 3601

Re: Another valve setting question........curious
 

Yes it showed actual lash on dial bumped motor over with starter button and watch dial

Re: Another valve setting question........curious
 

The P&G tool seems to be the most accurate way to accomplish this...why is it not the norm anymore?

Re: Another valve setting question........curious
 

There are a couple of companies now offering a dial indicator type lash setting tool. Set up properly, it gives the most accurate lash reading, as it removes "feel" from the process. I find that my "feel" usually yields a tighter setting than most people. Not saying that is correct, just making a comment.

Re: Another valve setting question........curious
 

I agree Alan, my "feel" is on the tight side also. The number is not important as much as doing a lash loop to find what the engine wants. The key is to be consistant with your settings or "feel".

Re: Another valve setting question........curious
 

Alan
Can you post the companys that are making them and are the like the P & G do they attach to the retainer?
Thanks

Re: Another valve setting question........curious
 

The only one I can find right now is made by Cam Correct, and sold by Competition Products.

It is not the only one, there is at least one more, but I can't find it right now.

Re: Another valve setting question........curious
 

PMS (Precision Measurement Supply) in Texas sells one that runs in the area of $250. If I remember correctly it's a good piece (uses a Starrett dial indicator) but you would have to ask around for a recommendation since I have not used theirs personally. I don't think their design can be used with a stud girdle.

Re: Another valve setting question........curious
 

That's the other unit I was thinking of.

I like his stuff, I have several pieces that he makes.

I'm betting that if it will not work with a stud girdle, that if the demand is there, he'll make every effort to make something work. He's a driven problem solver, he loves the challenge of finding the best way to do something well, and faster.

Re: Another valve setting question........curious
 

Everyone likes to experiment with valve timing, so methods vary depending on what you are trying to accomplish with the iron in your engine. With that said, the following is a very simple procedure to start out with that eliminates countless engine bumps and allot of frustration. Just rotate the engine twice, knocking out half the valves at each stop. Simple, effective and proven.

Identify cyl 1 at TDC (piston at the top of the power stroke with both valves closed). Mark it on the damper.

Rotate engine in direction of standard rotation to remove any lash and stop at your mark. If you overshoot the mark, do not back up, just go around in standard rotation again until you hit it.

Install pushrods and rockers with rocker adjustment screws out (max lash).
Evenly torque your rocker arms to spec.

Gently remove lash between rocker arms and pushrods by slowly tightening the adjustment screws.

At this point without rotating the engine any farther, you should be able to adjust 4 exhaust and 4 intake valves. Your firing order depends on which valves get adjusted.

Rotate the engine in standard rotation again a full 360 degrees, stopping on your “TDC” mark, being mindful not to overshoot the mark..

At this point you should be able to adjust the remaining 4 exhaust and 4 intake valves.

Hope this helps!