85 Blazer with 6.2l diesel

#1

My inlaws are wanting to sell me their 80 something Blazer (or Jimmy?) with the 6.2. It runs, but needs work. I need a project like I need another hole in my head, but they say they'll make me a deal I can't refuse. We'll see.

#2

take the engine out, put it in a crate along with the hydro boost if fitted and send it over to me please...

how much do you want??$$

#3

I dont think I have ever noticed a blazer with the 6.2 in it, mostly suburbans and trucks. In either case it would have to be REALLY cheap to be worth messing with, I saw an add tonight for a truck with it for $1,500 said it ran good. They basically have no value.

#4

With the exception of 3/4 ton trucks, I'd say diesels in general have fairly low value in the Southeast. They seem to be more sought after in the North. I've always found that odd. Fuel prices may be a factor. Dunno.

In any case, it looks like it is mine now. It is an 85. Chevy, not GMC. I've never owned a 6.2 or the 700 R4 trans, so it should be educational at least.

It needs an exhaust system now and tires in the near future. Batteries are new. Smallish, but new. It needs fluids from one end to the other, and it has an oil leak that may be from the filter. Other than that, hopefully just normal 20 year old vehicle stuff.

I don't really need it, but I have missed having a fullsize truck around. This one is somewhat more civilized than my 75 Chevy with see through floorpan. I sold it back to the guy I bought it from after almost 10 years of ownership.

My employer might want to buy this Blazer after I get the maintenance caught up. An inexpensive diesel truck is handy for some of the underground mines we do work for.

#5

Even as I typed it, I thought the oil leak coming from the filter sounded too easy. It looks a lot more like a rear main seal. Apparently these were built with rope seals. There is a two piece rubber lip seal available. That means pulling the pan, but it looks doable. Need to get the FSM obviously.

#6

zen wrote:take the engine out, put it in a crate along with the hydro boost if fitted and send it over to me please...

how much do you want??$$

I take it the 6.2 is not easy to find over there?

#7

I don't think that the OEM seal was rope, I think it was two-piece rubber.

The 6.2l went to a one-piece rear main seal in '92.

My '83 6.2 (in a G30 1T van) never leaked any significant amount from the RMS. It had very regular maintenance all its life, and synthetic oil only beginning at 102k miles and continuing until I sold it at 180k miles. "Never switch an old car to synthetic" is BS. But if it had had rope seals, I might have seen oil leakage go up.

I know a few things about the 6.2l, Matt, should you have Qs. The GM FSMs are readily available on eBay; I gave away the set my father bought new from GM in '82 for that van, when I sold the van, but recently picked up the engine manual again for an '83 on eBay for $15, for that 6.2l Aberdeen rip-off.

#8

Oh, the usual apply about diagnosing the RMS: is the back of the intake manifold doing the actual leaking? How about the oil pressure sending unit? And head gasket failures are fairly common on this engine. My driver's side front head gasket would "bubble" when it was warmed up. No actual fluid, but you could see a bit of outgassing

. Ran that way for years. In a van, you can't see it unless the engine is warmed up and you get underneath.

#9

I'll check for the above mentioned before tearing into the rear main seal. I take it the oil pressure sender is at the back of the engine? The gauge is nuts anyway and the two problems could be related. Replacing the sender sounds like a better project anyway. So far I've only topped off fluids and driven it on a couple of short trips. The car wash was an important one. The underside of the engine still needs it bad. (Insert full body shudder smiley here)

#10

goglio704 wrote:I take it the oil pressure sender is at the back of the engine?

The brass plug is where the OP sender would be.

#11

hard to find...go for silly money (espically if adapter plate included..)

usual thing is to fit them into land rover.....(and then trash the running gear)

#12

If I had more time to work on projects id take up the blazer and drive it up from TN. I think the gauges are mechanical, so the chances of it leaking are slimmer, I actually have never looked at the sender port on any of the 80's trucks.

I think the rear main is pretty easy on the 6.2 of its built like a small block, you could do it without removing the trans if you are reinstalling a 2 piece seal.

Im surprised that diesel trucks are worth less in the south than the north, we are the ones that have to lay on the glow plugs for half the year, mabye it has to do with the fuel prices, we are doing about 3.50-3.55/ gal for diesel right now.

#13

this type of GM diesel is not popular here in GM trucks.but are popular with toyota lancruisers/patrols .these engines come from middle east/europe,military surplus.

the new ford diesel is popular and the small number of dodge ram but petrol is more popular in the older models.i had 3 1980's 302EFI F series in last week for service,all had manual trans.

the oposite is the norm with japanese trucks-the LPG\PETROL small engine trucks are good but rare.toyota and mazda sell a new 4 cyl gas engine popular with 4.5 ton GVM rental market,funny to see that tiny pushrod in a toyota dyna.I havnt seen a mitubishi 2.6 for some time most are smokey,and cabstar petrols are very rare[not in new zealand].

australian ford 4.0 six and GM-H six/buick V6 are ideal for japanese trucks.
adaptor kits are common i see chev V8 in a isuzu in the usa this would not be a seller here.when you look at japanese sold V8 CNG/LPG trucks,these are modern reminders of the large numbers of old international/dodge trucks.-made in australia with canadian engines-kept the concrete flowing for many years now replaced with fleets of shiney new leased frieghtliners.

#14

Diesels are very popular here, its very rare that you see a new 3/4 or one ton gasser truck nowdays. (or at least not common) The GM 6.2 is the only one thats not popular, they will bring less money than a 350 or 454. While the older cummins and ford diesels can still bring a decent amount of money.

#15

Around here there is not much market for the 6.2 GM or the 6.9 Ford. If it isn't turbo, nobody really wants it. Except VWs, diesel cars can go pretty cheap, but are rare to find.

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85 Blazer with 6.2l diesel

85 Blazer with 6.2l diesel

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