Jump to content
  • Welcome To Mopar1973Man.Com

    We can see that your guest and been lurking about. When you register on the Mopar1973Man.Com site you'll be able to interact with all the other members. This is the most friendliest Cummins forum you'll ever join. Take the time right now and  REGISTER  on the Mopar1973Man.Com this will open up many more options and functions on the website. Everyone is very friendly and helpful just ask questions and everyone will help you out the best they can. 

Sign in to follow this  
jlwelding

Looking to buy my First 3rd gen

Recommended Posts

I have owned my 01 3500 for 4 years now and know just about everything about them. What am I looking for on the CR motor and are there any specific years to avoid and why?

Share this post


Link to post
Share on other sites

The only weak spot I know of for the CR series engines is the injectors and the lift pump. Injectors requires super clean fuel 2-3 micron fuel filter. As for engine wise when common rail injectors go out it can do serious piston and cylinder damage with major blow by. The stock lift pumps are weak and can't keep up with the demand volume wise. Sad but true a set of 6 common rail injectors cost more than 1 VP44 injection pump. :rolleyes:

Share this post


Link to post
Share on other sites

Depending on where you get the pump, you can actually get 2 for the price of 6 injectors. I have had good luck with my 03 HO 6speed. It hasnt needed any injectors since I ditched the quad with high rail pressure. Most people say that the 03-early 04 get the best mileage but the 04.5-newer respond more to tuning.

Share this post


Link to post
Share on other sites

100 or 150 is fine...

Or, if you want to keep the OEM FF canister, I'd recommend the Raptor system now. Internal fuel pressure regulator(no return line to the tank) and a proven quality pump...............like the Walbro and AD pumps. If you keep the OEM FF canister, you'd be wise to add a 2 micron secondary filter after the OEM one and before the CP3 fuel pump. Clean fuel is number 1 on the "common rails" because of the pressures the injectors see!!!!

Share this post


Link to post
Share on other sites

The in-tank pump that started being used in 05, and as a retro for 03-04's, is actually a good pump. They provide all the flow needed for the CP3, even with up to about 100 hp over stock (on a 04.5+ motor). Towing I never see lower than 6 psi and have 3 fuel filters and 4 banjo-bolts in there.. plenty for a CP3. If you upgrade the fuel pump and are sub 500 rwhp I recommend a Raptor and a Liberty canister, no 1/4 tank issues, better filtration possibilities than the filtered AD/FASS and easy install. Other than fuel filtration there really aren't too many HPCR issues. Early 2005 trucks did have a plastic end-capped IC, which don't last long.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...