Jartanyon

Had the valve covers off to recheck lash and noticed where the pushrods seated with the rockers looked a little odd. Pulled the rocker off and this is what I found. Does this look a little worn for 500 miles!?!? I am wondering if this is why a few of them kept needing adjustments. Lash was set per comp's instructions with 1/2 turn more. Is this normal?

Jartanyon

^^^

cv67

Why the extra half turn?

If those are the pushrodswith the pressed in ball on the end junk them all

Jartanyon

This is the kit I bought:

http://www.summitracing.com/parts/cca-rp1412-16

Directions said to go 1/2 turn after 0 lash. Should I not? Is there a better kit I should get? I was looking at the 1.6 Scorpians...

hugie82

Even if he had the lash too tight, it shouldn't cause that! Do you have a high lift cam in this engine? You might be bottoming out the springs.

Jartanyon

I have a XE262 so lift is not that high. Springs came with the cam kit.

76Rat

Do all of the push rods look like that or just that one? Or a few? What do the other ends of the push rods look like? Almost looks like a lubrication problem.

Jartanyon

Most of them look like this. I haven't looked at the other ends, but I would assume they look ok. They flowed oil so I dont think it was a lubrication issue. Could it be a bad batch?

76Rat

You know what they say when you assume (***-U-ME).

Jartanyon

No, as I said...spring is from the cam kit - it's 1.254"

Jartanyon

?? REELAV8R, why was your comment on the spring size deleted?

cardo0

Well now u have metal circulating inside the engine. I think its over due that u pull the intake and look at the lifters.

REELAV8R

It was wrong. should wake up before I post.

When you put it together did you check the geometry of the rocker on the valve tip with an adjustable pushrod and checker springs to get proper pushrod length?

Jartanyon

Oh...no worries then.

I did not check with an adjustable pushrod, but my neighbor who builds engines came over and took a look, He said they were the right size based on where they were touching the valve tip and where they ended their roll.


Cardo0 - I hear you, but pulling the intake is a bit drastic to do just yet, don't you think? I just drained the oil and ran a magnet through it and found nothing. I will put a magnet plug in the oil pan and see if it picks up anything. I'm also gonna do a compression check on the cylinders with the questionable lobes.

TedH

What prompted you to verify lash? Valve train noise?

What do the rocker push rod pockets look like?

Are the rockers positioned on the valve tips with the 2-piece guide plates on the AFRs?

Jartanyon

Since I was at my 500 mile oil change since break-in, I wanted to check everything again. I am not sure I understand your last question - why wouldn't they be set that way?

Here is a photo of the rocker pocket:
:

Here is the lifter end:


...and here is the rocker end - looks a tad worn:

claysmoker

From the looks of that pushrod end, you got a set that wasn't heat treated correctly and as a result are soft. Get a new set of good pushrods that are the same length and make Summit eat those. At the price you paid for that entire kit, you aren't going to get much in the way of high quality I'm afraid.

Jartanyon

That is not Summit's fault - I don't think they should have to deal with it.

I sent an email to Comp and of course they are saying the rockers were probably too loose and that they, and I quote, "don't look compromised. Just a bit of cosmetic blemish at the tip." I am no expert by any means, but It looks like some of them are half the size that they should be.

Here is another photo of them all out on the passenger side - look at how deep the groove is on that rod from the guide plate - again...only 500 miles?? That is normal??

claysmoker

So Comp is giving you a hard time about it? Go deal with Summit. They are a good company and have far more pull with Comp than you do. Let them deal with it, because you aren't going anywhere dealing with Comp directly!

Also, I don't know what the part number on the pushrods is, but Comp does make pushrods which cannot be used with guideplates. Maybe you ended getting those by mistake.

63mako

Cosmetic blemish my ***. Those are junk, likely were when you bought them. I agree with the bad heat treating as likely cause. Replace them all. Always, always check for correct pushrod length with adjustable pushrod.