cummins "53"

[tdgulfstream]

im thinking of buying an 2001 holiday rambler endeavor with the cummins motor, does anybody know if the motor used is the "53" block which seems to be a bad issue (cracked blocks) in dodge trucks, wondering if its a concern in motorhomes also. Thanks, Tom

[wolfe10]

d_denver wrote:
I believe the 53 block was only on the Cummins ISB.

That is correct.

[d_denver]

I believe the 53 block was only on the Cummins ISB. I doubt the Endeavor has the ISB small block

[CVD]

I have a 1999 code 53 ISB. Had it 14 yrs, no problems (have to admit, was quite concerned when I learned about the potential issue after I'd bought the coach).
Re. what you are looking at, I believe the cracked block issue would have occurred by now. If it passes a pressure test now, I wouldn't worry.

[tdgulfstream]

thanks for the response, I am going out this morning to check it out, this motorhome has 89,000 miles on it, i'll see what it looks like ...

[wolfe10]

Here is an explanation of the issue and years of production-- note, this is the year the ENGINE was built, so coach year could be somewhat later:

http://www.cumminshub.com/cummins-53-block.html

[tinkerer]

The years for these blocks were from 1998 to 2002, they were cast in Brazil. I had the misfortune of getting stuck with one of these failures in a MH.

[wolfe10]

Yes, 99-01 I would check the block. Yes, this applies to Cummins B engine ONLY.