Quote:
Originally Posted by babymog
Sorry, should have mentioned the 601. Personally I feel that the 602t was the replacement for the 617, same number of cylinders, roughly the same horsepower & torque, just a newer design. It too had the early head issues in '87, and the early vacuum-pump bearing, corrected later in production.
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I agree.
The 602 family ran through into the 2000's and was replaced by the 612/647 which is still pretty much the same engine with modifications to the intake, injection, head, and electronics. All three are just as durable and strong as the engine they replaced, including the venerable 617.
Although a fresh slate was used in the 602's design (and the subsequent 612/647's based on it), in reality the 617 was simply modified to adhere to the stricter emissions and efficiency standards and was only discontinued in North America in 2006. Up to that point it powered Jeep products as well as the T1N. Outside of North America these engines powered the E and C among others.
I run a 2004 T1N for work and the only thing that ever failed over 200k was the $60 turbo resonator.