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Old 09-03-2013, 02:46 PM Rookie

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Neverending story, now turbo problems?

So I blew my 6.4 last October and have been fighting with a used engine company ever since. Thought I'd go the cheaper route and get an engine with <100k on it, but I have had nothing but bad engines from the place.

Four engines later.....I decided to get a new long block from Blackwater. Everything seems on the up-and-up with the new engine, but I am not so sure about the parts that I swapped over from the fourth garbage engine I got from the company I had so many problems with. Thing is, they said that the engine had 67k on it, and the shop who tore into it(only to find a cracked piston) said the motor looked more like it had 267k on it.

I replaced a few things during the swap, 8 injectors and a HPFP being the most expensive of them. Now I am getting what sounds to me like a bad bearing noise, but I am not so sure of it. It isn't an intermittent clicking grinding like a hub bearing, but more of a really dry bearing noise. Hard to explain if you haven't heard one. In park or neutral, I can't get it to make the noise, just under boost. It is always very loud, much louder than my exhaust noise, when I am next to a wall or driving next to something it just sounds like blowing on a piece of paper.

Also, I haven't been able to get my boost to go over 32psi or so at any time(from stock tune to 275hp tune). Now before they assembled everything, I gave it all a once over and tried wiggling the turbo shafts. There was maybe less than a millimeter top to bottom and no back and forth play at all. By less than a millimeter, I mean only enough to make a tiny clicking noise, nothing I thought would be bad. It did throw a P2263 code once and hasn't returned in the 750 miles since. There is also MUCH less smoke coming out of the exhaust, but no soot on any of the exhaust pipes that I can see suggesting a leak. I used to be able to throw a cloud. Now it is more like a poof

Another odd thing I have noticed is that one of the turbos continues spinning for 10 seconds or so after the truck is off. It isn't any kind of typical turbo winding down noise or anything, just spinning.

I have an idea of what I think it is, but would like to hear some opinions before I throw anything out there. I filled it up with Rotella the other day and used a Motorcraft filter as well.

Oh yeah, I have my Spartan on 40hp EGR and DPF off, block-off plates, and stock exhaust with DPF/DOC delete pipes.

Before I blew my first engine, none of these symptoms were present. I actually lifted the heads when I hit ~60psi boost being an idiot. Everything was typical tuned 6.4. Exhaust sounded like I expected it to.

Last edited by LA64; 09-03-2013 at 03:08 PM.
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