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tjet 
Samba Member
Joined: June 10, 2014
Posts: 3533
Location: CA & NM
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 Posted: Wed Sep 14, 2016 5:18 pm Post subject: cooling system flow direction |
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| Does anyone have a diagram that shows the direction of flow of the coolant for an '86 & up 2.1 w/MT?. |
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kourt
Samba Member
Joined: August 13, 2013
Posts: 1937
Location: Austin, TX
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tjet
Samba Member
Joined: June 10, 2014
Posts: 3533
Location: CA & NM
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| Posted: Wed Sep 14, 2016 6:11 pm Post subject: Re: cooling system flow direction |
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So looking at that illustration, if the thermostat is closed, it wont allow flow from the coolant distributor by means of a liquid lock?
What part of the cooling system activates the thermostat? Does the purple bypass line that control the thermostat? |
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djkeev
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Joined: September 30, 2007
Posts: 32574
Location: Reading Pennsylvania
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tjet
Samba Member
Joined: June 10, 2014
Posts: 3533
Location: CA & NM
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| Posted: Thu Sep 15, 2016 4:23 am Post subject: Re: cooling system flow direction |
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Thanks for the detailed explanation.
I have one more question:
If you were to add an additional / auxiliary radiator, what would be the best locations in the circuit to tap into? |
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atomatom
Samba Member
Joined: May 15, 2012
Posts: 1867
Location: in an 84 Westy or Bowen Island, BC
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| Posted: Thu Sep 15, 2016 4:39 am Post subject: Re: cooling system flow direction |
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an aux radiator to cool the van or to heat you?
to heat you, then the heater hose circuit. but you already have two heaters, so that probably isn't it.
if it is to cool the van, then you may want to buy a serious oil cooler (from vanistan.com or roll your own). i'd suggest getting a cooler with a fan, because the real heat comes when the van is crawling up a hill.
fwiw, the stock radiator is already about 4 times larger than it needed to be. if you have cooling problems, check for pinched hoses (above the spare tire), and the correct type and operation of the thermostat.
_________________
84 Vanagon Westy, 1.9L, California raised but defected to Canada. |
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the craigness
Samba Member
Joined: March 25, 2014
Posts: 188
Location: Queens, NYC
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| Posted: Thu Sep 15, 2016 11:43 am Post subject: Re: cooling system flow direction |
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I'm also chasing down a cooling problem.
I have another thread here with my issued but I transplanted a2.1 including the cooling system into my 84 Westy. Since then I'm running very hot. It never overheated spend it's always up to about 4/5 of the way. The plumbing appears to be done correctly and there is no air in the system. I change the thermostat several times to no avail. I have heat for days.. The donor engine ran perfectly normal in the donor van and the old 1.9 ran cool in this van it just have no compression left. The radiator is a year and a half old. I don't know where to begin I have exhausted everything . |
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djkeev
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Joined: September 30, 2007
Posts: 32574
Location: Reading Pennsylvania
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eeebee
Samba Member
Joined: July 17, 2009
Posts: 431
Location: Tujunga
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| Posted: Thu Sep 15, 2016 2:42 pm Post subject: Re: cooling system flow direction |
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| djkeev wrote: |
Did you install the entire 2.1 system or just bits of it?
For instance, the coolant loop around the engine cover was installed?
Dave |
how hot is 4/5
Are you using the same sender?
_________________
Eric
1987 Vanagon Wolfsburg Special Edition
GoWesty 2.3
Democracy is the recurrent suspicion that more than half of the people are right more than half of the time. |
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