Diesel Heater Core - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ElGracho · 11-19-2002, 05:11 PM

There's been some talk of changing heater cores lately and I think I have the basic procedure down pretty well.

What will be the difference with a diesel with the engine-side sound deadener cover installed? Do I have to remove that thing, or are there access holes that let me take the inner heater box off?

I've had my 84 gas truck apart and it wasn't too bad. It's getting cold enough here that I figure I'd better fix my 87 pretty soon.

Oh yeah, my 87 has A/C too.

Thanks

*Piston* · 11-19-2002, 08:41 PM

The procedure is basicly the same as your 84. The outside insulator makes it tough to get the heater hoses of sometimes but thats the only difference.

Here's a exploded view and procedure if it helps

Click here!

arveetek · 11-19-2002, 09:50 PM

The procedure is the same once you get that stupid cover off. That is the most annoying part of the whole swap. I just cut the cover into small pieces and left if off. There really isn't any way to remove the cover in one piece so that you can reinstall it, and you can't get to the core mounting nuts with the cover in place. I can't tell any difference in noise levels with it off.

That is the way most of the folks at the diesel page say to do it as well.

Have you checked out www.thedieselpage.com ? It's a pretty cool site. I've been a member there for a couple of years now.

11-19-2002, 05:11 PM	#1
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,550	Diesel Heater Core There's been some talk of changing heater cores lately and I think I have the basic procedure down pretty well. What will be the difference with a diesel with the engine-side sound deadener cover installed? Do I have to remove that thing, or are there access holes that let me take the inner heater box off? I've had my 84 gas truck apart and it wasn't too bad. It's getting cold enough here that I figure I'd better fix my 87 pretty soon. Oh yeah, my 87 has A/C too. Thanks __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

11-19-2002, 09:50 PM	#3
arveetek Ultimate Diesel Dude Join Date: Oct 2002 Location: Southwest Missouri Posts: 328	The procedure is the same once you get that stupid cover off. That is the most annoying part of the whole swap. I just cut the cover into small pieces and left if off. There really isn't any way to remove the cover in one piece so that you can reinstall it, and you can't get to the core mounting nuts with the cover in place. I can't tell any difference in noise levels with it off. That is the way most of the folks at the diesel page say to do it as well. Have you checked out www.thedieselpage.com ? It's a pretty cool site. I've been a member there for a couple of years now. __________________ Project truck: '81 C/20 converted to 6.2L TURBO DIESEL bored .040", gear drive, 6.5L injectors/pump, custom pistons, custom 4" exhaust, 700R4, 4.10's Daily Driver: '95 K1500 Tahoe, 6.5L TURBO DIESEL, NP241, 4L80E, 3.42's

11-19-2002, 08:41 PM	#2
Piston Account Suspended Join Date: Oct 2002 Location: Olathe, KS Posts: 2,301	The procedure is basicly the same as your 84. The outside insulator makes it tough to get the heater hoses of sometimes but thats the only difference. Here's a exploded view and procedure if it helps Click here!



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