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08-25-2015, 06:30 PM
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#1
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3 Rivet Member 
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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Motor swap '82 310
I have been slow to post anything but after getting my 310 home from it's misadventures in IN, I pulled the motor.  
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 06:34 PM
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#2
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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After removing the hood, grill, radiator, bumper and everything else from the front, I could actually see the motor! It was a tight fit coming out.  
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 06:35 PM
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#3
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,535
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Is it too early to know what failed yet?
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08-25-2015, 06:36 PM
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#4
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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Unfortunately I didn't get any pics on the way out. The photos from Brad were a great guide for my project! 
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 06:42 PM
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#5
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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Moved the motor into the garage and onto a motor stand. Found lots of shrapnel when I pulled the pan. 
I could see the #5 piston was shattered. Pulled the head and found a valve snapped off and driven through both the top of the piston and the head.
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 06:45 PM
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#6
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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The head is junk. The piston is in a dozen pieces. The rod is bent, the pushrod is bent and the wrist pin has badly scored the cylinder wall. Not much left to work with. 
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 06:46 PM
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#7
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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New 502 crate motor on order. I'll try to update when it goes in.
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 07:06 PM
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#8
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Rivet Master 
Currently Looking...
_
, _
Join Date: Mar 2008
Posts: 2,385
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Motor swap 82 310
Yup certainly looks like a giant paper weight. Please let us know the specs of the 502. I'm also curious as to the mileage on the engine and what condition the timing chain and gears are in.
I have an '82 with 140k on it. I wish I had the shop replace the timing chain and gears when they had the radiator out for re-core.
__________________
May a Firefly land upon your shoulder
and bring you good luck, good fortune, and abundance.
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08-25-2015, 07:21 PM
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#9
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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58,000 miles on the 454. Not sure why the valve failed. I believe the PO had the heads off before I purchased it.
1982 310 motorhome 454
Henniker New Hampshire
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1982 310 motorhome 502
Henniker New Hampshire
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08-25-2015, 08:01 PM
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#10
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Airstream Driver
1994 30' Excella
1992 35' Airstream 350
Austin
, Texas
Join Date: Feb 2002
Posts: 5,224
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looks like you had to unbolt the exhaust manifolds to get it out? Were they stock or did you have headers and whats your plans for that?
__________________
1994 30' Excella Front Kitchen Trailer
1990 25' Excella Travel trailer
1992 350LE Classic Touring Coach
AIR #13
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08-25-2015, 09:05 PM
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#11
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3 Rivet Member
1987 34.5' Airstream 345
northern IL
, Illinois
Join Date: May 2015
Posts: 102
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Your second picture reminds me of the Board Game Operation.
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08-25-2015, 09:28 PM
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#12
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3 Rivet Member
1987 34.5' Airstream 345
northern IL
, Illinois
Join Date: May 2015
Posts: 102
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Did you go with the 502 HO.
502 HO Big Block Crate Engine | Chevrolet
If not does your 502 come with a roller cam.
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08-25-2015, 09:47 PM
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#13
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Dazed and Confused
Currently Looking...
1983 31' Airstream310
Hillsburgh
, Ontario
Join Date: Sep 2012
Posts: 3,805
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Glad to see the coach made it home safe and sound.
Funky LED headlamps. How are they in comparison to the original sealed beam halogens?
Goodluck with the 502. Just wondering are you updating the fuel system or sticking with the carb setup? Which reminds me of the post I posted on your original thread.....This would be a great time to replace fuel lines.....power steering lines.
Cheers
Tony
__________________
Per Mare, Per Terram and may all your campaigns be successful.
“It’s a recession when your neighbor loses his job; it’s a depression when you lose your own.” "Harry S Truman"
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08-26-2015, 04:23 AM
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#14
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Rivet Master
Currently Looking...
1995 36' Classic 36
Ludington
, Michigan
Join Date: May 2011
Posts: 1,662
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I think a little JB weld on that piston and head and you'll be good to go!
I visited Timeless when they had just gotten a classic back from the shop that installed a 502. Very nice clean retrofit. Fit well and looked great. Might be a source for a little info.
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08-26-2015, 04:46 AM
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#15
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3 Rivet Member
1978 28' Argosy 28
Austin
, Texas
Join Date: Apr 2015
Posts: 207
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Wow, those pictures represent a lot of work and creativity to get the lump out. Great work. That's some spectacular carnage. I'm also curious to know what kind of fuel delivery you've got planned for the new mill. Great job so far!
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08-26-2015, 05:32 AM
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#16
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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Quote:
Originally Posted by PeterH-Airstreamer
looks like you had to unbolt the exhaust manifolds to get it out? Were they stock or did you have headers and whats your plans for that?
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I had the stock manifolds. It may have come out with them on but I am installing a Banks power pack so I removed them for extra clearance.
1982 310 motorhome 454
Henniker New Hampshire
__________________
1982 310 motorhome 502
Henniker New Hampshire
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08-26-2015, 05:38 AM
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#17
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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I am getting the 502 HO. I will be reusing my Quadrajet. Fuel injection was beyond my budget.
The LED headlights were a great addition. I can actually see at night now! I installed them and rewired the headlights with heavier wire and relays at the same time. Massive improvement in lighting.
1982 310 motorhome 454
Henniker New Hampshire
__________________
1982 310 motorhome 502
Henniker New Hampshire
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08-26-2015, 07:24 AM
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#18
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3 Rivet Member
1982 31' Airstream 310
Henniker
, New Hampshire
Join Date: Aug 2015
Posts: 215
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[QUOTE=Kota;1674985]I think a little JB weld on that piston and head and you'll be good to go!
Fixes everything doesn't it?
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08-26-2015, 08:01 AM
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#19
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,116
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Quote:
Originally Posted by PeterH-Airstreamer
looks like you had to unbolt the exhaust manifolds to get it out? Were they stock or did you have headers and whats your plans for that?
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Peter, I think leaving the manifolds/headers on would make extraction a little (or more likely a lot) more difficult. I don't know that it would be impossible but the removal process involves continual raising and tilting of the engine while at the same time pulling it out the front. This is a difficult process when doing it yourself!
On any of these rigs that still have cast iron headers and if I was in the process of pulling the motor I'd get rid of the manifolds and replace them with a set of good quality headers. Headers definitely help reduce the amount of heat in the dog house among other benefits.
Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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08-26-2015, 08:26 AM
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#20
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,116
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Quote:
Originally Posted by chiefair
I am getting the 502 HO. I will be reusing my Quadrajet. Fuel injection was beyond my budget.
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Any idea what cam you're getting with the 502?
Quote:
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The LED headlights were a great addition. I can actually see at night now! I installed them and rewired the headlights with heavier wire and relays at the same time. Massive improvement in lighting.
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Care to share details of your LED installation?
Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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