warp2diesel wrote:
The difference in towing capacity is Gooberment Regulations written by or influenced by a bunch of Gooberment Lawyers who could not find a job any place else.
The US/Canada version has a more aggressive EGR and we have to use a lower Cetaine rating of fuel. That is why the tuners advance the timing a little to compensate for the crappy Cetaine.
If you want to tow 7,000lbs, you can do the mods other serious towers and myself have done or take your chances.
Avoid the 0W-40 oil, it was to up the EPA numbers and make the Bean Counters Happy, I use Amsoil AMO 10W-40 that has high zinc. Note for over seas they don't push 0W-40.
Turbo bearings are the first to go with oil that is too thin, cam followers are next. I have seen it before on other engines, the Laws of Physics are universal and consistent.
Install the Hayden Severe Duty Fan Clutch and Mopar 11 Blade Nylon Fan. It will keep your engine cool and lower your EGT.
Install EGT, Boost, and Trans Temp gauges, I also have an Oil Pressure gauge.
Install a hitch rated for 7,000 Lbs, I have one.
Add an extra trans cooler with 3/8" line fittings in series with your stock one.
Consider a larger capacity trans pan, I have a PML that also fits the 68RFE transmission.
Consider a tune suitable for towing. I went with the Inmotion Stage 2 for the low end torque.
Consider a Billet Torque Converter like Suncoast along with a Transgo or Sonix kit for the front pump. If the shop you use has the $1,500 Sonix tool, don't expect them to recommend Transgo. If you are going to DIY, Transgo works great and you don't need the $1,500 tool.
Open up the exhaust by getting rid of the 2 1/8" restriction at the back of the CAT and replacing the stock muffler with a 2 1/2" or straight pipe.
Then you will have a CRD that can tow 7K across the USA/Canada.
I appreciate this! Some of these I have already started.
One of my coworkers runs a tranny shop (he railroads for the health, he had a sick daughter who unfortunately passed). He did a fellow coworkers Cherokee (maybe has the same tranny, not sure). I think I will have him install my Suncoast or ATS TC. Leaning towards the Suncoast, since ATS still hasn't gotten me info on theirs.
My little concern is going over my GAWR and GVWR and if some bored DOT cop (the ones that inspect trucks and have portascales) decides to harass me and the family when he sees the lil liberty towing a 5500lb TT.
Also, does anyone know the rating on the stock wheels. Of course, I can't find any good aftermarkets. I have the ones from my Caliber that I use for snows, that fit, but have a rating of 1580, so I hope the stock ones are a little more than that.