Location: Canton, (Sixes) GA
(24.30.36.240) | reposting this info, think it is pertinant......I pulled this off the www. Modified and cleaned it up a little. Originally posted by "dozer" on the diesel doctor forum 3/10/2005. Couple of things he suggests I need to do to mine. .. Denny
message;
The 8.2L is a well-designed and well-made engine for its class and vintage. The people running the high-power versions in marine applications generally love 'em.
They are VERY quiet-running engines. They have a very wide power-band. And they are also one of the most fuel-efficient engines of their era and size-class.
The injectors do need service more often than some other engines; and it's important to keep them working right. Anyone who knows the old 2-stroke Detroit's will have no problem adjusting and servicing the injection on the 8.2's.
There are 3 "secrets" to being happy with an 8.2L:
1- Get a turbo version, for sure. That's about 230hp... Be SURE to replace the muffler whenever it starts causing backpressure!
2- DO install an exhaust-pyro gauge and do NOT run the temp past 1100 (pre-turbo) for any length of time. installing a cold-air intake and an intercooler is well worth the effort, to allow continuous full-power on grades. It knocks 100-200 degrees off the pyro). At LEAST add a cold-air intake.
3- Keep the cooling system in GOOD condition, and DO install an additional "on-off type" overheat sensor in the head, and hook it to an in-cab buzzer. Every 8.2L cracked head that I know of was directly caused by an overheat event. If you don't overheat this engine, you probably won't ever crack a head.
And of course, do all the other things that a smart owner does with any diesel: keep the oil clean and full, keep the air-cleaner clean, and do NOT lug it.
It's easy to avoid lugging with this engine, because it makes good power all the way up to 3,500+ rpm. Truck-redline is usually 3250 full-load, 3450 no-load.
These engines like to run between 2000 and 3000 rpm. Some of the people who have trouble with this motor are driving it like it's a big Cummins 855 or something, i.e. always lugging it around 1500-2200 and upshifting it at 2500.
I think that might be part of why they have trouble with them...they're used to lower-rpm diesels. At such a low rpm, and with full power on, maybe this motor isn't circulating enough water thru the heads or something. Anyway, the 8.2 loves to run faster...upshift it at 3000+, downshift it at 2000; and cruise around 2200-2700, depending on load, for best MPG.
|
8.2 DETROIT DIESEL
