[Hopeless Diamond]

Actually by a factor of 2. 4th radiator is now in truck, 3rd Mishimoto. $100 for shipping each time, and oh yeah, they don't install themselves...





Have only changed my wiper blades once, Sil-Blade. They seem to last as long as a set of tires. Will be changing both out here in a month or so (50k miles)

 

[Rattlesnake18]

Why did you go with a Mishi the 3rd time?

 

[ZMANN]

http://www.powerstroke.org/forum/6-...moto-radiator-upgraded-version-results-7.html
post 129 might make you feel better (or worse )

 

[Hopeless Diamond]

Warranty, $100 to ship vs buying a new radiator outright. I may regret it though and if this one ends up leaking I sure won't do it again.

Of course I'm assuming they will acknowledge that it's leaking from the pictures and won't charge me for it. They want pictures of the leak, of course that's impossible with it installed so you have to sign all these forms guaranteeing you'll pay for it if you don't supply adequate proof of the leak.

 

[Rattlesnake18]

Let us know how it works out for you.

 

[Hopeless Diamond]

Will do. The one I just took out was supposed to be the updated version but I don't think it was. The upper support posts were all aluminum. The replacement has hard rubber extensions thread on at the ends of the posts. This is where the upper bushing ride. Not sure if that's the actual "improvement" or if it was just a manufacturing change.

 

[SkiSmuggs]

http://www.powerstroke.org/forum/6-...moto-radiator-upgraded-version-results-7.html
post 129 might make you feel better (or worse )

Those were complaints about overheating with the Mishi on 6.4L engines as opposed to leaks on the 6.7L Mishi. Interesting reading anyway.

 

[ZMANN]

my point was "post 129" Mishi may get the boot for not standing behind their stuff

6.4 has issues also

 

[SkiSmuggs]

my point was the post I pointed to post 129 Mishi is may get the boot for not standing behind their stuff

6.4 has issues also

Okay, I didn't miss that but didn't realize that was the main point. Thanks.

 

[Boudah]

dude, Mishi radiators suck across the board... i hope this third one doesnt give u any grief.

 

[Mishimoto]

Hello Everyone

I'm sorry to hear about some of the issues you are experiencing with your trucks. I'm sure many of you are quite well versed in the chassis flex issues that both the Ford 6.4 and 6.7 trucks are now becoming notorious for. Unfortunately at the current time, Ford has decided to ignore this problem and move forward by designing another vehicle entirely. Personally, I don't agree that a new vehicle is an adequate solution and also understand that not every one has that option to move forward.

While Ford has moved on from this problem, Mishimoto has been hard at work and made revisions to our radiators on affected vehicles. While we will never say that we have fully resolved this problem, currently we are the only company working on a solution and taking steps in the right direction. We still fully support and honor our lifetime warranty on all Ford diesel products and will continue to offer support to the community as well. If you are experiencing an issue, please contact us directly so that our customer service team can work on a resolution. [email protected] or 302.762.4501.

Thanks
-Jake

 

[Hopeless Diamond]

Having had a few opportunities now to look at how the radiator is supported, I am not a firm believer that the problems are caused by faulty cab bushings or other support issues. I know nothing about the 6.4 so can't speak to the problems they have and what the causes are. It just seems like an easy out to blame the problems with a 6.7 as being caused in the same way as the 6.4. The 6.7 radiator is supported at the top in rubber bushings clamped to single structural piece. Not saying this couldn't flex, but it would seem that it would take a lot of stress to tweak it enough. The bottom sits on rubber bushings that slide over locating pins. These pins are loosely attached to the front lower structural cross piece. This is what sits on the cab mounts (mine were fine by the way).

I suppose the bottom support piece could move independently of the top piece causing the radiator to rack, pushing one side up more than the other. This racking/flexing would put a strain on where the cooling tubes enter the side tanks and cause those welds to fail (where I've been experiencing all these leaks). What about running an X-Brace across the front of the radiator to minimize any racking? Then also maybe use a lighter durometer bushing at the bottom supports to absorb more transferred forces.

Just spit balling...

 

[Patriot]

Or a different alloy. I got 2 for my 6.0 sitting in my shop.

 

[HeavyAssault]

I had the OEM unit replaced over a minor leak. Second OEM unit is holding strong.

Frame flexing as the singular cause is BS; "notorious" I highly doubt that is fact. Sure it's probable there are some failures due to the frame flexing under extreme situations, but NOT the norm. It's FAR too easy for aftermarket companies to start some sort of "educated engineering excuse" and not have the verifiable evidence or data to prove it. Too bad Misho will not cover the costs of the fluid and time. I'm sure it's more than a $100 out of your pocket.