Posted by HeyPigFarmer on January 17, 2008 at 15:08:06 from (24.236.189.31):
In Reply to: 6.5 Liter Turbo Diesel posted by Dave Sherburne NY on January 17, 2008 at 13:33:24:
Scream and run from this thing. I am really big into diesel trucks, and this is one line of motors, the GM 6.2 and 6.5 that I absolutely despise. Reasons being that they are very very notorious for cracking heads, pretty much unless it's a brand new head it's going to be cracked. They use a cast iron crank instead of a steel one. The rubber in the harmonic balancers tend to go back, causing your cast crank to break which leaves you stranded. They are the only diesel engine put in a light duty truck that has a timing chain instead of gears, which really hurts because it is also running the injection pump not just the cam, they stretch and leave you with no power and hard starting. The fuel solenoid drivers (Others call it other names) but there are transistors in the pump that overheat, burn up and leave you stranded. They are indirect inject so they start hard in the cold unless you have good glow plugs and good batteries. The cooling systems sucked, unless it's one with dual thermostats expect it to overheat. They used an EGR before they were mandatory for emissions to quiet them down but also it robbed power. As Benjamin pointed out they are low on power. The blocks cracked regularly up until they started having NAVISTAR (yes the same company that makes the powerstroke) cast the blocks for them, these can be identified by the IHC cast in the valley. They only ran 8lbs of boost and were not intercooled because at 22:1 compression if you throw real boost to it you would blow just about anything up, but you need that compression to get the IDI to start. They are just a poorly designed half hearted attempt at a diesel engine. There is a reason why they are so cheap. If you want a diesel spend the money to get a Cummins (watch the automatics) , Powerstroke, or even a 6.9/7.3IDI would be better, or if you want a GM the Duramax is infinitely better than that 6.5. I would stay the heck away.
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