David Jenkins
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| posted on 10/5/08 at 05:09 PM |
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Not quite the same situation, but I had a few hot-water fountains with my crossflow - entirely due to airlocks. I don't know what the Pinto is
like, but the crossflow is a real pig to clear when it's in a bad mood.
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mat.price
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| posted on 10/5/08 at 05:57 PM |
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your on the some boat as me 
so i looked at my old cortina book for over heating
cause/-insufficient water in cooling system
remedy/-top up rad (last time i put the water in it was to the top)
cause/-fan belt slipping
remedy/-tighten fan (had a look it was ok)
cause/-radiator core blocked or rad grille restricted
remedy/-reverse flush rad,remove obstruction (i have a new polo rad and it fits a treat )
cause/-thermostat not opening properly
remedy/-remove and fit new (i pulled it out today so i have no thermostat this did help when driving around then it over heated so i stop to let it
cool)
cause/-ignition advance and retard incorrectly set
remedy/- check and reset timing (this was done on the rolling road)
cause/-carburettor incorrectly adjusted
remedy/-tune carburettor (done on rolling road)
cause/-oil level in sump to low
remedy/-top up sump to full mark on dipstick (i did that before i started the pinto)
cause/- engine not yet run-in
remedy/-run-in slowly and carefully (my enigne was made in 1988 think it will be run in by now?)
which leave me with one thing that i have not looked at?
cause/-blown cylinder haed gasket ie water/steam being forced down the rad overflow pipe under pressure!!
remedy/-remove cylinder haed, fit new gasket
im thinking of doing this next monday and see if it makes any difference!!
that im out of options i dont know
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rusty nuts
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| posted on 10/5/08 at 07:10 PM |
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we have had the arguments about the manifold take off but that is just at warmup so irrelevant really... Is it? To my way of thinking the manifold is
the highest point of the cooling system on the engine side of the thermostat, having a hose here would help to bleed the system.
should i invest in an electric water pump?? at least it would run on with the fan after switching off...?
Unless the impeller has come off I
doubt if an electric pump would help, if your worried about circulation after the engine has stopped some of the Renault 19s used one in the heater
pipes . Get the head gasket tested before wasting more time and money on it , if the gasket has failed it won't matter what you try it will
still overheat.
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Schrodinger
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| posted on 10/5/08 at 08:48 PM |
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IIRC when I was running a Pinto the exit from the head in the middle of the inlet manifold is at one of the highest points of the engine so would let
air out.
Try jacking the rear of the car up as high as you can also lift the header tank as high as possible to get as much air out as poss.
Oh and get rid of the pressure cap on the rad as that lets the system draw in air as it cools.
[Edited on 10/5/08 by Schrodinger]
Keith
Aviemore
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britishtrident
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| posted on 10/5/08 at 11:02 PM |
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Bypass is not for just at warm up if you don't have it the cooling system won't work properly.
By pass is essential to get an even spread of temperature through the engine.
See http://web.tiscali.it/elise_s1/CIB.htm
[Edited on 10/5/08 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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DaveFJ
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| posted on 14/5/08 at 11:05 AM |
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Anyone know where I can get a non-pressure relief type rad cap for my Polo rad?
A lot of people have suggested I need to loose the cap in favour of a blank cap but I can't find one
Dave
"In Support of Help the Heroes" - Always
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flak monkey
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| posted on 14/5/08 at 11:32 AM |
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Polo rads dont have a cap on...AFAIK. Mine hasnt anyway.
David
Sera
http://www.motosera.com
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David Jenkins
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| posted on 14/5/08 at 08:11 PM |
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quote:
Originally posted by DaveFJ
Anyone know where I can get a non-pressure relief type rad cap for my Polo rad?
I got one from Eastern Auto Spares, just around the corner from your house! 
Otherwise, you could try Burton Performance.
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