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Join Date: Apr 2004
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Rebuildable?

I own a rental house which for the past 5 years I've been renting to a couple of VW owning students. After they recently moved out I went over to clean the place up and found the following.. 4 type iv blocks several sets of heads as well as some other stuff. Including some 411 parts.
Trouble is most of this stuff was outside for at least two very rainy months and all the steel pieces have rusted.
I'm thinking the blocks, and heads would still be usable for rebuilding. I would obviously need to replace the studs, ect.

I guess my real question is : Does water damage weaken the heads or block? Would surface rust weaken a crank so that It would be of no value?
Opnions please..

(also got 2 2.0 bus engines complete, one that even runs!)

I believe in the old saying : " You can never be too rich or have to many spare vw parts"
Schosh
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Old 02-27-2005, 05:30 AM
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Quote:
I guess my real question is : Does water damage weaken the heads or block? Would surface rust weaken a crank so that It would be of no value?
If the crankshaft is not otherwise too badly worn, the surface rust can be removed by machining the crank journals. I think they are usually ground some multiple of 0.010" undersize. You need the corresponding undersize bearings. I don't think aluminum rusts as readily as iron so I doubt that there would be a problem with a rusty case or heads but have somebody who knows Type IV heads have a look at them and tell you what needs to be done. Oh, and pick up Tom Wilson's book - Pelican probably sells it.
Old 02-27-2005, 11:46 AM
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Just looked in my old chemistry (hated it) book.

Quote:
Aluminum readily forms the oxide Al2O3 when exposed to air:

4Al(s) + 3O2(g) ----> 2Al2O3(s)


A tenacious film of this oxide protects metallic aluminum from further corrosion and accounts for some of the unexpected inertness of aluminum.

Aluminum oxide has a very large exothermic enthalpy of formation(delta H sub f = -1670kJ/mol). This property makes aluminum suitable for use in solid propellants for rockets such as those used for the space shuttle Columbia.
Old 02-27-2005, 11:59 AM
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The heads, cases, cranks, rods, etc., can probably be saved. Have a good machine shop that has air-cooled experience check them over.

--DD
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Old 02-28-2005, 09:36 AM
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2.0 bus mojo=SCORE! CRANK AND RODS ARE THE SAME. the case might not have the dip stick and or oil fill thngy depending on yr. I would bore out htose cylinders for 96mm KBs. heads might be a good score too
http://www.tunacan.net/t4/tour/heads.shtml
this link will tell you about the heads
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Old 02-28-2005, 10:00 AM
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Thanks guys...I've got one of the bus motors set up to test right now...I'm kinda exictied cause I may be able to use it as a temp while I rebuild the top end of my "real" 2.0..
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Old 02-28-2005, 03:51 PM
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Related question:

2.0 Bus and 914 crank and rods are same. Seem to remember reading somewhere that 914 c&r's had closer tolerance on weights and balance.

Anyone care to comment on this.

I had a bastardized 2.0 in a car i got and was wondering if I should pay attention to this.
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Old 02-28-2005, 04:04 PM
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Hmmm, I will weigh some tomorrow
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Old 02-28-2005, 06:03 PM
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