Building a 6.4 is not worth it they still cannot be made reliable because there isn't a rocker arm cure. Throw a stock motor in it and sell it, or drop a v10 in

 

If you rebuild with the updated rocker arms (Ford redesigned them with hardened tips...) you should be fine... Once deleted you get rid of the oil dilution issue. As long as you stay on top of oil changes they don't wear anywhere near as fast as they would on a motor with the dpf in place.

The 6.4 can be made very reliable, but its going to cost more than most people are willing to spend. Again, the main fault in the 6.4 lies in the piston and camshaft designs... Everything else just compounds these 2 problems. And the only way to solve them is a complete rebuild.

Not saying they aren't an issue but they aren't THE issue with a 6.4. In the grand scheme of things rocker arm issues are more of an annoyance. Worn rocker arms do make the lifters (that are already over stressed by the camshaft design) wear more though. Out of all the repairs you can do on a 6.4 though, rocker arms really aren't that big of a deal to replace.

 

I too am noticing lots of these diesel performance site prices are ludicrous!

Thanks for the link to the Racor filter. Do you have a list of what else was needed fitting-wise etc. to plumb it in?

 

This is the part that can be a little tricky and takes a little if its the first one you have done.


Unfortunately i don't but i do remember whats involved to install one a ford truck. You will have to cut the steel line suction line that runs from the tank to the HFCM near the location where you plan to install the racor filter. Your gonna need two brass compression fittings to tie into the steel suction . Once installed, from the compression fitting you will nee some type of hose to extend from the steel line to a location on the outside of the frame where you mount the racor filter. You need to be careful when you drill the holes for the filter mount as there are several line that run on the inside of the frame rail. I made up a fuel rated braided hose that goes from the compression fitting to the new inline racor filter. Since i made the hose up i had male threads on one end that the compression fitting attached to with a brass coupling, which connects to the steel lines. On the other end i used a male fitting that was large enough to install directly into the racor fitting. The Inlet and outlet holes are much larger then the factory steel line so as an option you could use a bushing to reduce there size and make the hose the same size male threads on both sides if its hard to locate the larger fitting thats need to fit the racor housing.

Its been awhile since i installed one, i wanna say it was 5/8 or 1/2 steel line but i don't recall the sizes and would hate to have you buy the wrong parts, if you are unsure on the size of the steel line looking at them or measuring them, you could swing buy a junk yard and cut a piece off a wrecked truck to make sure you get the right compression fitting so you are properly prepared to complete the installation. Nothing worse then trying to tackle this on a week when parts are harder to get and not having you need to finish you vehicle, especially if you need it the following week.

Hope this helps.

 

Think I'm gonna try this on my 6.7.