Mx out, Cat in.

As the title says, pulling out my MX 485 and replacing it with a C15 or C16.

Have had nothing but troubles with the SCR system. The MX seems to be a good motor. However with less then 500hrs on it and being down for almost 2 months now, it's time to prevent any further down time related to poor emissions equipment.

I've talked to as many tuners as I could find and no one is deleting the SCR anytime soon. So instead of more downtime a swap is happening.

I put it out to my dealership I want to swap motors. They relayed it through to Paccar. Paccar tells them I'm the first guy in North America to say they want to swap out a MX. My dealer said they will purchase the MX and all the emissions equipment off of me for a decent price and Peterbilt wants the dealer to do the swap.

So now I'm trying to figure out how to build the motor I want. I'm pretty set on a C15 6NZ but have a urge to go with a C16 for the added torque. My truck is a 2012 389 tri-drive. Those tri's take up a lot of HP. I GVW 61,300kgs.

The tuning is going to be custom, the turbo is from Pius Erbele and a PDI manifold. Those are my only set specs so far. Turbo is rated for 700hp all day long. He is testing a 800hp single I would prefer but it's not ready yet. A local shop is recommending a PDI cam, is that the best solution or should I use a Cat cam like some of you suggest? Should I stay with stock injectors and tune for more fuel or upgrade to a more suitable set?

This swap is happening in the next few weeks, so any input I can get would be very valuable to me.

Thanks

 

Thanks. That's what I was thinking about the cam. I wasn't sure tho.

As far not going much over stock hp, the only reason I'm thinking 700-800 is for reliability. I always want more power lol. I have a 800hp 6.4 Ford that I race and is currently getting triple turbos. Always want more power lol. If I can safely run higher hp and without blowing a bunch of smoke then I will!!

I have been instructed from a few sources that I need at least a 70 pin ecm. Most recommend the 120 pin for better interfacing. This is still a new truck, I want it to maintain as much bells and whistles as possible.

I have a 60 series 12.7 DDEC 3 that I was thinking of using until I was told to use a newer motor to make wiring easier. Pretty much buy the harness or get one from a wrecker and plug in. So I've been told anyway.

 

You were angered following? Try driving it lol. Hope you weren't stuck behind me for to long lol.

Willy and I have talked extensively already. I'm not sure if Dave's has any 6NZ's but Willy did recommend his injectors. I will call Dave's monday.

Diesel Spec is who I'm using for tuning as well.

It will be nice to put some power down, it's really all it's missing.

And who are you? lol