Easy, quik test.
Gasket face down on a sheet of cardboard, paper, etc.
Shoot some WD in each port.
What shows up on the paper?
80+ posts and I've not seen the tune, nor a log posted.

 

Based on what I just read some of those valves aren't going to be sealing very good at all.

 

Pop one of the valves out with the X mark on it, chuck it up in a drill and give it a spin...easy 3 minute deal.

The suspense of this thread is killing me...

 

Turn the head upright and fill the combustion chambers up with water and then spray some air through the intake and exhaust ports, that is if they will even hold water.

 

In response to Trickflow It was one set of rockers you think I would just keep throwing rockers at a set of heads when ones got eaten up? One label was sent originally and i said to Jeff I'm not sending them in if you guys are pushing blame. It was an immediate issue as aluminum was showing up in oil not crazy enough amounts where Blackstone said yank the motor but they can't make recommendations based off liability. There was an Issue right away with the tips being off but Hindsights 20/20. Here is my last log before i pulled the motor in Feb/March Then got the time to finally tear down the top end Noticed the Issue and got them sent in. The labels Yes you sent ONe prepaid label and I waited too long so I apologize for that. The second set was sent in when Jeff told me you guys get charged either way if they get used or not. please pull up the call logs where I said I ate up two Sets of rockers. I really don’t want to go tit for tat which is why I said send them back. The Whole message again is passing the buck I felt. If My EGTs were so Hot I would Notice it in a lot of other areas.
Also faulty exhaust valves seating issues etc would cause High EGTs as well?so if that’s an issue from the beginning of course **** is going to get burnt up. It’s NA so no I don’t have an EGT sensor unfortunately otherwise maybe I would have seen it high.. who knows. I’m glad I’m told now what’s actually wrong with them instead of they’re burnt up looked like you abused them which is all I got over the phone.


Also why would valves bend with plenty of PTV clearance and no contact with any of the pistons at all there was a mile of room between these valves and pistons at the top of the stroke. Everything Else Looks fine in the motor so why just the heads and rockers. -12cc dished pistons with 2 out of the hole and you mean to tell me there could be PTV issues? No Also At those Egts I would see my headers glowing red never once did.


It’s funny your asking these questions how did the seats melt etc. How are valves bent on a 553 lift cam set at twelve a clock. How did I Not notice 1800 degree EGTs? How was this vehicle still driving fine when the motor got pulled because I was done looking at the oil. How in the tune if afr and fuel trims are ok your not seeing knock retard etc you supposed to know your heads are getting smoked? Tuned in SD then MAF then switched to dynair as it was just a basic street driven truck.


but obviously the end result would to have a nice set of Trickflow heads as I waited long time for summit to get the ten in stock that go quick. But honestly, it’s just been a kick in my nuts the whole process being excited having the motor built forged bottom end I throw a decent amount into the motor. Which you all know it happens like that. So me not knowing what’s wrong and the motor was still running not rough at all it would still pull no bucking no missing no noises, the general consensus I got was to just drive it. But after the 10m mark I kept waiting for the oil pressure to drop it was just me wondering when something is going to go. Built up another motor Basic Rebuild with some 243 heads which I wish I just took the couple weeks and got the heads sorted and checked out the other possibilities mentioned. I appreciate the response and hope the data log can shed any light if the tune was way off to be causing issues. If I thought it was me or anything I did I wouldn’t have sent them in. So that’s why I got somewhat frustrated over the phone when looks like abuse and I’m scratching my head like how I was never just smashing the thing around. Unfortunately, it’s just way out of my budget to basically have to rebuilt these set of heads for what was quoted I didn’t realize it was that bad. Thanks for the response.
Last Log and tune attached

 

Do us all a favor and do some of the trouble shooting items other members have mentioned and let's see if those valves are bent. Don't worry about the blame game you already know you aren't getting anything from them which is normal for this hobby so instead let's focus on finding what is actually wrong with those heads.

 

I just noticed that one exhaust valve at the bottom of your first picture is clearly not sitting on the valve seat properly and I suspect that's a bent valve.

Good luck with everything moving forward guy!

 

Thanks man I’m going to grab my stuff from the garage and tear them down and measure spin em etc. hopefully get some downtime tomorrow

 

Went back to read old threads about your build and seen you had trouble from the start with this engine.

 

Yeah I know been a hell of a year with the build. That non start issue was a bad wire and the rough tune was a little off. Once I had it up and going ran ok, during tuning VE was a little strange compared to other friends tune files I’ve seen but easily adjusted while dialing in tuning via Speed density at first.
Bought the heads they sat in box for awhile had it built 5k at machine shop for the build. The good thing is my 4l80e been holding strong lol.

 

Explain to me how you can bend a valve other than it coming into contact with a piston...Anyone?

And why would a company put the cylinder heads back together with the bent valves?

Why waste the time?

 

Too long of spark plug maybe, spark plug is pointing right at the exhaust valve.(that would have left a mark.
or piston contact like you said. Bent valve from the head manufacture.
That would explain problems from the get go.

 

How would could someone possibly bend a valve during assembly of the head?

 

Same kind of "tech" that would use a chainsaw for brain surgery....

 

Items 2-5 if not remedied, will cause all sorts of issues.
For starters:
** Was the EGR leak fixed prior to driving it?
** What was the "bigger cam" ?
Was it put in at the rebuild/machine shop, or did you put it in?
In any case, did it get degreed and checked for ptv clearance?
** Coil harness wire colors show the correct cylinder location.
On wrong, and rough run/backfire, etc, will occur.
Possibly, lean misfire, insufficient PTV clearance, wrong firing order, and the valves were toasted, and the stems bent on/very near initial startup.
Just my $.02.
In any case the ya buts, what ifs are about done with.
Good luck with the teardown.

 

Hey man Yeah the EGR tube originally was going to keep but with the headers I got had the block off plate so just got a plug for the intake. The bigger cam was me just saying the stage 3 summit truck cam was more of an ask about-too big to get close enough with the tune Braf iac etc. How much throttle body opening resetting tps. The Coil harness was installed correctly just asking about orientation which obviously could be reversed. The machine shop degreed and checked the PTV said I had plenty of clearance as my pistons show no contact. 2 out of the hole 51thou head gasket with .553 lift and -12cc pistons gave me a ton of ptv honestly wish I went with a flat top to raise compression. So yeah Getting into tearing them down tonight. Appreciate the reply I pretty much have logs from almost every day I drove as the aluminum kept worrying me so the laptop went where I went lol. Time to move on and get a new set of heads back on the block Thanks Oldbuzzard.

 

This will probably tell the story. Like I said, I can't wait to see what you find.

 

So The exhaust Valves are all pretty Tan color the heights are different between the intake and exhaust valve overall heights. Seats look someone buried in guess burnt? Are the Valves supposed to be of equal height or do they cut the seats differently? Also looks like they checked the intake for concentricity and half the dye lapped off other side didn’t.

 

What are you finding for the OAL of the intake and exhaust valves it's hard to see a difference from the visual. So far from what you've shown that seat and exhaust valve dosen't look burned up to me. Clean those two valve seats up with some brake clean and post some closeups of those valve seats. Curios to see what you find out on the other chambers. Also how do the stems of the valves feel as your pulling them out of the guides, tight with not much of a wiggle or loose and easy to wiggle?

 

4.895 exh 4.9220 intake

some are tight as **** in the guides and some have a little wiggle. I still go back to these didn’t seat correctly from the jump but who am I to say very presumptuous according to trickflow