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rustbus
Samba Member
Joined: June 18, 2009
Posts: 2078
Location: alberta
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 Posted: Sun Feb 07, 2010 5:23 pm Post subject: Judge my heads |
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Hi.
These heads are from the first motor I had in the bus - that the PO sold me with it. im not sure that this engine was original to the bus....any way to find out?
anyhow, i noticed these heads have a ventilation connection. whats that for? if I recall I ran this engine with them blocked.
aahhh, memories. I remember the day it died, I had just reassembled it and was heading to school. started losing power. then smoke started coming out the vents. then we pulled over and i dont think it would start again, cant remember. i took it apart, noticed a bit of scoring on the pistons. this time around, (like the other day) I noticed the big galley plug is pushed out...i wonder if thats what killed it? this motor sat for 10 years and I'm sure that water didnt get in a push it out...
anyhow, how do these look? 
whats the best way to assess their condition?
thanks guys,
kris.
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May of '72 Deluxe.  2.0L L-Jet CS & 091 trans conversion
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50336
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| Posted: Sun Feb 07, 2010 5:46 pm Post subject: |
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A 411 had a flow thru ventilation system, hence the ports in the rocker boxes.
The best way to access the condition of the heads is to take or send them to some one who know what to look for. |
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boxxcar
Samba Member
Joined: January 03, 2010
Posts: 192
Location: Kraft Durch Freudeville NJ
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| Posted: Sun Feb 07, 2010 6:08 pm Post subject: head condition |
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I don't know about all conditions. basic sealing of valves might be revealed by pouring a light solvent-mineral spirit into each port towards the valve in question. the holding the head up and seeing how fast fluid seeps through.
after this removing valves-which involves valve spring compressor seeing if the seats stay put etc.
but the solvent would be an easy diy to start with.
hope this helps
/Eric |
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maximan1
Samba Member
Joined: January 07, 2008
Posts: 1354
Location: Anaheim, California
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| Posted: Sun Feb 07, 2010 6:22 pm Post subject: Re: head condition |
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| boxxcar wrote: |
after this removing valves-which involves valve spring compressor seeing if the seats stay put etc.
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What do you mean "if the seats stay put"? If the seats were not staying put, the valve would have hammered it into a nothing long ago, and you would see a large gap between the valve and the place where the seat should have been.
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1978 Transporter, 2.0L FI |
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rustbus
Samba Member
Joined: June 18, 2009
Posts: 2078
Location: alberta
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| Posted: Sun Feb 07, 2010 7:18 pm Post subject: |
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thanks guys,
huh, 411 heads. wonder how these got here... are they pretty much interchangeable with regular 1700 bus engines? actually, given that my current block is a W, these probably would suit it fine? weird. they didnt come off a W block. it was a AE or AW or something
were would this ventilation go? maybe i'll check the 411 index.
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May of '72 Deluxe. 2.0L L-Jet CS & 091 trans conversion
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SGKent 
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
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| Posted: Sun Feb 07, 2010 8:59 pm Post subject: |
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it takes a trained eye and it isn't something that can be assessed by a photo. I can't wiggle a valve stem from here or look for hairline cracks etc. Also you need to know the history on them to know if the PO had new seats put in them.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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