preventing early 08 valve issues before they start.

dsberman94 · Dec 28, 2013

so we have to do headgaskets and studs in a 6.4. its an early 08 as the title says. IIRC it is the early 08 motors that have the issue with the valve failing. how can we avoid this since were going to be in there anyway. what valves should be purchased to prevent this. also being installed is highrev valve springs because the truck is run hard and put through its paces. its just getting to the 50K mile mark and it would be terrible to put the heads back on and go run it hard a couple times and have that valve fail. so hopefully you guys can help out the cause. thanks in advance.

DEEZUZ · Dec 28, 2013

If your worrying about that, than I'd go ahead and install new lifters, rockers, and a fuel system while your at it

suprdzlduty · Dec 28, 2013

You could install new valves, but I don't think the valves were the problem. Dropping a valve is usually cause by something else. Piston contact, over rev, etc...there are many more things than valves to be worried about on a 6.4, like said above. Cracked block, cracked pistons etc.

silverpsd_06 · Dec 28, 2013

Collapsing a lifter seems to be more prevalent than dropping a valve

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mcdaniel1991 · Dec 29, 2013

suprdzlduty said:
You could install new valves, but I don't think the valves were the problem. Dropping a valve is usually cause by something else. Piston contact, over rev, etc...there are many more things than valves to be worried about on a 6.4, like said above. Cracked block, cracked pistons etc.

Man I have been creeping here in the 6.4 forums thinking about getting a 6.4 and selling my 6.0. But every time I read this kind of stuff it makes me reconsider.

cory151 · Dec 30, 2013

mcdaniel1991 said:
Man I have been creeping here in the 6.4 forums thinking about getting a 6.4 and selling my 6.0. But every time I read this kind of stuff it makes me reconsider.

Holy chit, a guy with a 6.0 is scared of reliability issues of a 6.4? :doh:

Its the 6.0 that made me get a 6.4. The OP wants to do preventative maintenance, but if your gonna double a trucks HP with minimal mods (300hp+ tunes) you should probably expect the break some stuff.

dsberman94 · Dec 30, 2013

Ok so I just kinda figured id update this a touch. This truck will be getting studs and victor reins gaskets along with 30% nozzles. Also getting valve springs, billet pushrods, and an upgraded cam shaft since this truck is run hard. Swinky knows why that's needed. And since we're putting more fuel and air in we need to get more out so the upgraded BD performance 6.0 manifolds will be installed with custom bellowed up pipes from mpd. Parts boxes are gonna be rolling in any day now.

nickw226 · Dec 30, 2013

dual pumps? Why not OEM gaskets?

Breaking Habits · Dec 30, 2013

Make sure you use the Gold VR gaskets and NOT the silver and black ones, or you will be doing that job twice. Just a heads up

dsberman94 · Dec 30, 2013

No dual pumps yet. MPD is using these gaskets in King Kong and if they're holding in that truck they will hold in this one. Dual pumps are in the plan as well as a big single turbo for over the summer.

dsberman94 · Dec 30, 2013

Jared @ River City Diesel said:
Make sure you use the Gold VR gaskets and NOT the silver and black ones, or you will be doing that job twice. Just a heads up

Hopefully MPD sends the gold gaskets and not the black and silver ones then.

Breaking Habits · Dec 30, 2013

They have discontinued their gold gasktes. Beware of the difference, you want the gold style, which is the same as the OEM International.

Just a forewarning

Cknox121 · Dec 30, 2013

No piston upgrades? Any plans to later on?

Why did you decide not to upgrade them now?

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dsberman94 · Dec 30, 2013

Pistons later too. We believe with the low mileage on the truck they will be fine.

silverpsd_06 · Dec 30, 2013

Lifters... 300 dollar insurance I wish I had done mine

Breaking Habits · Dec 30, 2013

For sure, lifters are too cheap not to touch

sootie · Dec 30, 2013

spend the money on the pistons now. its not worth sacrificing your block when the stock ones crack. i haven't heard of valve issues on the 6.4's but as was mentioned above, 200.00 for new lifters is cheap insurance.
check the plastic rocker clips for wear as well.

if you are doing the work yourself, have your torque wrench calibrated before you start as it may save you a block in the end...

i dont think the stock hpfp with hold up to bigger nozzles. the early 08s had a problem with the hpfp harness chaffing and shorting, i think there is an update for that.

check for cavitation on the front cover behind the waterpump when it is apart. it would probably be a good idea to do the oil cooler when your in there.