[E30Group] Coolant bleed and engine noise

I'm pretty sure the thermostat is opening as the bleed screw is on the other 
side of the block and steam and hot water comes out. 

Car is at a barn so I usually only work on weekends. 

This is how I understand it; the valve defaults to an open position without 
power. But I checked for the click on our winter E30 and did hear it so I know 
what to listen for. 

Since there was sludge from the blown head, wondering if I could have a partial 
blockage still and it creates an air pocket ? Or jams the valve? Would this 
create the gurgling I hear from the pump to thermostat?

Finally.... In the video I posted, does anyone suspect rod knock? Or is it just 
more valve train?  

Thanks all. 
Ross  
-----Original Message-----
From: Allister Brown <[EMAIL PROTECTED]>
Sender: [EMAIL PROTECTED]
Date: Mon, 13 Feb 2012 21:23:54 
To: <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Re: [E30Group] Re: Coolant mixture

thermostat not openin?, i think all the hoses should be hot once it  
opens, a new heater core does wonders! .You can hear the switch  
mentioned with your head down in the location, turning the heat blend  
knob on and off produces a small click. It is an on off switch valve...
just over half on the guage sounds a bit hot but thats perhaps  a non  
issue at this point. i guess at this point you could even have the  
hoses backwards?? my free 2 cents)

On 13-Feb-12, at 8:30 PM, Ed MacVaugh wrote:

> Have you checked the electric heater control valve to the left of the
> trans tunnel above the gas pedal on a left hand drive car?
>
> Ed>>> - I have no heat. I felt that if I bled the engine half way
> > decently, I shoul have some semblance of heat. nada. I blew air  
> into the
> > upper heater core pipe, and water spat out the bottom pipe, but  
> now my
> > concern is the core itself is plugged (where the fins are) and the
> > water/air is simply spitting back out from behind the plastic area  
> on
> > the end of the core. In other words, water and air are NOT traveling
> > through the heater core itself ?
> > I get a "bubbling" noise when I shut off the car well after reaching
> > operating temperature - the gauge is just above halfway. The hose  
> from
> > the pump to the thermostat actually vibrates a bit. I have used the
> > bleeder screw and jacked up the front of the car. the upper radiator
> > hose is hot and the lower one is not. The upper hose for the  
> heater is
> > that weird three-way one and it seems OK, but not very hot (should  
> it?)
> > and the lower one to the head is similar. I do not have the recall
> > notice by-pass thermostat on this car.
> > Ideas other than the system is still not properly bled?
> > Thanks all!
> > Ross
>
>