New Diesel vs. Older Models
I have seen several posts indicating that the poster would rather have an older model diesel, prior to all the emission control devices, but it seems every year we see improvements in tow ratings and ...
Forum Discussion
ksss wrote:jus2shy wrote:ksss wrote:Redsky wrote:
Something that is very different with diesels is the rate of change with the manufacturers coming out with new versions which fix problems with prior year models but introduce new flaws. Gas V-8 engines can be sold for decades with minor changes (post unleaded gas) but GM for example has had 5 different engine designs in the past 10 years.
Really? Care to elaborate on the 5 different engine designs of the Duramax?
LB7 - The Original
LLY - Known for overheating, but had VG Turbo
LBZ - Fixed overheating, most reliable known
LMM - 2007 emissions compliance
LML - 2010 emissions compliance (DEF)
You consider these to be separate engine designs? The basic design of the Duramax has not changed since inception.
It is true that certain items can be retrofitted, but they all have slightly different architectures. It's almost as simple as the chevy LS small block. It's been the same basic motor for the better part of 10 years, but each generation where GM designates a new code has quite a few improvements and changes (even though they're difficult to tell). Here's a good webpage showing the design changes through the generations: Diesel Power Magazine
Wikipedia has a nice breakdown as well: Wiki
