One more 6.0 getting proofed

[daveb]

X2 on the harness. Had mine heat wrapped.

[sscott3d]

Diamond eye makes a 4" turbo back for vans. Just got mine but haven't installed it yet. They put a dimple in the down pipe to clear the doghouse.

[sscott3d]

Looking to "bulletproof" mine soon. What's the advantage to the 6.4 push rods?

[JoeH]

Originally Posted by sscott3d

Diamond eye makes a 4" turbo back for vans. Just got mine but haven't installed it yet. They put a dimple in the down pipe to clear the doghouse.

Post the link if you have it. I'm pretty sure that's only for the 7.3 and not vans with a 6.0. The existing downpipe is 2.5 or maybe 3" and has more than a dimple, rather it's crushed to have an extensive flat spot. This is a cat back option: https://mbrpautomotive.com/index.php...s&part=S6285AL

You might gain just as much removing the constriction of the cat and installing a high flow diesel muffler. The stock muffler with all the baffles is pretty constrictive as well.

[WhitH]

Diamond Eye does have a turbo back kit for the 6.0. I put it on my 6.0 sans cat and it really made a big difference in response and lower EGTs. Sounded great too. I can’t remember exactly, but I think the down pipe was still 3.5” but a bit less crimped than stock and then it went to 4”. Stock exhaust is 3.5” I believe.

http://www.diamondeyeperformance.com...17_226_248_276

[JoeH]

Originally Posted by sscott3d

Looking to "bulletproof" mine soon. What's the advantage to the 6.4 push rods?

Yeah, it might not even make a difference. It depends on how much was taken off the heads when they were decked or milled. Either way the push rods that Ford sells for the 6.0L are ONLY the shorter ones now. It's only like $60 bucks and you would think the hydraulic lifter should take care of the difference but the reason was because of premature lifter failure. And really only on the trucks than vans which are of course tuned for less HP. The 6.4 pushrods are .047" shorter. Will you take that much off when resurfacing? Probably not (recommended max is supposedly .008) but there are known clearance issues with the 6.0 which is why some just put new heads on rather than trying to recondition them. Besides the thin walls and issues with cracking.

The ends on the new ones are also bronze. OEM was steel which is a harder material and can scar and weaken it over time. Ford (or International?) went with bronze to limit the amount of wear.

If the heads are coming off that's why I recommending replacing them rather than re-using them since this is a thread about bulletproofing. No stone left un-turned

[JoeH]

Originally Posted by WhitH

Diamond Eye does have a turbo back kit for the 6.0. I put it on my 6.0 sans cat and it really made a big difference in response and lower EGTs. Sounded great too. I can’t remember exactly, but I think the down pipe was still 3.5” but a bit less crimped than stock and then it went to 4”. Stock exhaust is 3.5” I believe.

www.diamondeyeperformance.com

Well there you go, thanks for posting that. There were no aftermarket options available when I researched it and instead I had mine ceramic coated and wrapped. And not sure that much is gained here if they are the same size? I also killed the kitty and installed a high flow muffler.

[sscott3d]

Measured the down pipe and it is 3.5" but looks to be more free flowing then the stock. This complete turbo back kit was less than $290 on e-bay from "Diesel Ops", and free shipping. I'd post a link but I'm not that tech savy.

[ShuttlePilot]

Originally Posted by sscott3d

Looking to "bulletproof" mine soon. What's the advantage to the 6.4 push rods?

I am aware Bill Hewitt is a character but here he is discussing the relationship of push rod length and deck height as being important. My father was pretty experienced in racing/building the Ford FE family of engines and push rod length/deck height/valve geometry was a big deal for reliability in those engines so all this sounds familiar to me. YMMV but it's food for dicussion.

https://www.youtube.com/watch?v=YjKw8N7lE6o

- Eric

[arctictraveller]

Originally Posted by ShuttlePilot

I am aware Bill Hewitt is a character - Eric

6.0 failures caused by "head banging red necks" It all makes senses now. What amazes me though is learning that heavy duty diesels use a lifter designed decades ago for small block V8 gas motors, who knew? Also, he stated that as heat and RPM increase, the lifter bangs on the cam, but how does a shorter pushrod prevent that? It more sounds like the pushrod bottoms out in the lifter, resulting in zero lash, causing the valve train to bind up, and the shorter pushrod allows a little more clearance.