[T2] solinoid

[jkfoster]

It sounds like the wiring got mixed up at the starter/solinoid. Â Or you have a bad solenoid...never heard of one failing and sending current through but might be possible. I don't think you can put on the solenoid backwards.
Just my thoughts...


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-------- Original message --------
From: type2-request at type2.com 
Date: 04/19/2016  2:00 PM  (GMT-06:00) 
To: type2 at type2.com 
Subject: type2 Digest, Vol 35, Issue 11 

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Today's Topics:

   1. re ceramic coatings (Robert Mann)
   2. Solinoid (Bob Pratt)


----------------------------------------------------------------------

Message: 1
Date: Tue, 19 Apr 2016 09:49:18 +1200
From: Robert Mann <robtmann7 at gmail.com>
To: VW type 2 late aircooled <type2 at type2.com>
Subject: [T2] re ceramic coatings
Message-ID: <a06240809d33b046675e6@[192.168.1.2]>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"


	On the exterior of exhaust manifolds, pipes etc this has been 
commercial in NZ for a couple decades.
	On the inside of cylinders, I'd not heard of much ceramics. 
Pistons are coming along, I gather.  If the combustion chamber's 
several surfaces can be lined with ceramic, better specific power is 
expected.
	But the notion that intrigues me is ceramic added to valves. 
Exhaust valves are liable to wear, as are their seats, from the v 
high temperatures imposed on them by the exhaust gases pulsing past 
them.  They have been cooled in expensive engines this past 7 decades 
by a heat-pipe of sodium contained in the valve stem.  The idea is to 
conduct as much heat as possible away from the valve head & seat, 
thus tending to slow their wear.  That aim would appear to be opposed 
by slapping a relatively insulating layer of ceramic on the valve 
head.
	If someone is offering such aftermarket ceramics, ask to see 
the data compiled from failures so far.  Is the ceramic not falling 
off from time to time, in various sizes?  Are those fragments readily 
flushed out the exhaust valve, or do they sometimes cause damage? 
And anyhow, what is the plurry idea in the first place?

	I confess to the vice of theorising, with no facts  -  please 
supply the latter.



Robt Mann
Whangaparaoa, New Zealand
'73 VW 1600dp Devon camper
'53 Meteor V8
various Jawa-CZ and Jawa-NZ strokers

-- 


------------------------------

Message: 2
Date: Mon, 18 Apr 2016 20:55:18 -0400
From: Bob Pratt <ka1dza at verizon.net>
To: type2 at type2.com
Subject: [T2] Solinoid
Message-ID: <046F55D8-2018-42EC-9A61-11ED280F4E05 at verizon.net>
Content-Type: text/plain; charset=us-ascii

Hi all,
During the rewiring of my bus, I had to replace the Solenoid. Is it possible to install the solenoid upside down? When I connected the battery again, the engine started to turn over without the key being in the ignition. I triple checked each connections. The only thing I can think of is the solenoid.

TIA

Bob Pratt


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