From: Wayne Harris (papercu@hotmail.com)
Date: Sun Feb 19 2006 - 20:48:02 PST
This is on the newer engines but some of the patches/info may help. Wayne
All the usual declaimers apply!
http://www.amghummer.com/Diesel/No8Cyl/CrackedBlock.htm
http://www.amghummer.com/Diesel/RearheadCooling/rearHeadCooling.htm
>From: "Chance Wolf" <bigbadwolf@telus.net>
>To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>Subject: Re: [MV] 6.2 swap question
>Date: Sun, 19 Feb 2006 20:03:37 -0800
>
>
>----- Original Message -----
>From: "Jim Zehr" <jimm1009@yahoo.com>
>To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>Sent: Saturday, February 18, 2006 2:17 PM
>Subject: [MV] 6.2 swap question
>
>
> > I know that this is not correct for a restored
> > military configured M1009 but I'm starting to think
> > that 6.2 engines are a mistake.
>
>My own M1009 has some incredible amount of mileage on it now and the only
>thing I've had to change out was the injector pump because one of the
>components inside was dissolving thanks to additives in modern-day diesel
>fuel and was clogging up the works with black particulate matter (Cold
>Advance Valve would get clogged right up.) At work here we have a bunch of
>CUCVs and HMMWVs and the odd 6.2 diesel civvy pickup as well, and the only
>problems with the 6.2 we've had have been glow plug (and associated
>electronics) and fuel pump/ fuel pressure switch/ drainback stuff in
>addition to the odd starter and flexplate trouble. However, that said, the
>one or two we've sent in to the rebuilders proved kind of..educational...as
>once we had a pile of heads we sent in along with the two that came off the
>engine itself, hoping to find two usable ones out of the pile that weren't
>cracked. The rebuilder laughed and said:
>
>"Oh, they're *always* cracked. The trick is to find some that aren't
>cracked too badly."
>
>Another engine we'd had rebuilt by one fellow detonated as soon as it was
>installed, and we sent it out to a second guy to get a post-mortem done.
>Fellow calls us on the phone a few days later and asks us to come down and
>have a look at it. He showed us serious web-cracks on the main journals
>and told us that block should never have been rebuilt to begin with, and
>since it happens often enough on the 6.2s, the previous rebuilder should've
>known to check for that.
>
>Anyhow, I wouldn't hesitate to put another 6.2 in anything here that needed
>it. I've put beaucoup miles on them and think they're amazing. Just make
>sure the cooling system's up to par and that you're doing regular oil
>changes and all should be good. (And check your starter bolts/nuts every
>time you do an oil change if not even more frequently - especially the
>front-bumper-end one which likes to walk out and off if it's getting a
>daily
>oil bath like a lot of them.)
>
>
>
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