water or coolant
02 February 2012, 08:58 PM
#1
Scooby Newbie
Thread Starter
water or coolant
hi, i've just been told that your not supposed to put water in an alloy engine as this rots them. i've been told your supposed to use coolant is this true and what type of damage can water cause can anyone help?
02 February 2012, 09:23 PM
#3
Scooby Newbie
Thread Starter
just having problems holding water changed the rad,rad pipes to silicone and new thermostat the last idiot that owned it was putting water in it so just wondered if this could be the problem it warms up fine and drives fine but just won't hold water having to top it up with coolent every thew days
02 February 2012, 09:43 PM
#4
The coolant / anti freeze also acts as a corrosion inhibitor, I have heard of people knackering cast blocks by using 'neat' water with no coolant (basically the block rusts from the inside out)
Never heard of someone doing the same with an alloy block but why would anyone run an engine without coolant added to the water ?
Never heard of someone doing the same with an alloy block but why would anyone run an engine without coolant added to the water ?
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02 February 2012, 11:04 PM
#8
In answer to your question, i feel you may have mis-typed or mis-heard what was said, neat water is indeed a no no, but some water mixed with neat antifreeze to a 50/50 combo is required, or you can but premixed stuff etc but again,this will have water in it.
so in short, neat water no, water/coolant yes
so in short, neat water no, water/coolant yes
02 February 2012, 11:13 PM
#9
Water on its own f**ks up the engine and sludges up the radiator and heater matrix.
The antifreeze when diluted 50:50 is what we typically call "coolant". This contains corrosion inhibitor and this is what stops the alloy corroding with the steel, copper and brass which is what is inside the cooling system (along with rubber, silicone/neoprene seals and plastics which don't tolerate the acidity caused by the corrosion).
History lesson: Its this stuff that makes modern cars reliable...back in the 70's many high performance engines with an alloy block or head would have cooling issues....think Triumph stags, Jaguar V12s and Climax (imp).....it wasn't an engine fault it was was the lack of decent quality corrosion inhibitors and the lack of understanding of galvanic corrosion!
Infact lack of corrosion inhibitor was one of the reasons why Buick abandoned their alloy 215ci V8 engine!....which was later to be purchased by Rover
The antifreeze when diluted 50:50 is what we typically call "coolant". This contains corrosion inhibitor and this is what stops the alloy corroding with the steel, copper and brass which is what is inside the cooling system (along with rubber, silicone/neoprene seals and plastics which don't tolerate the acidity caused by the corrosion).
History lesson: Its this stuff that makes modern cars reliable...back in the 70's many high performance engines with an alloy block or head would have cooling issues....think Triumph stags, Jaguar V12s and Climax (imp).....it wasn't an engine fault it was was the lack of decent quality corrosion inhibitors and the lack of understanding of galvanic corrosion!
Infact lack of corrosion inhibitor was one of the reasons why Buick abandoned their alloy 215ci V8 engine!....which was later to be purchased by Rover
Last edited by ALi-B; 02 February 2012 at 11:20 PM.
02 February 2012, 11:16 PM
#10
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Water on its own f**ks up the engine and sludges up the radiator and heater matrix.
The antifreeze when dilutled 50:50 is what we typically call "coolant". This contains corrosion inhibitor and this is what stops the alloy corroding with the steel, copper and brass which is what is inside the cooling system (along with rubber, silicone/neoprene seals and plastics which don't tolerate the acidity caused by the corrosion).
History lesson: Its this stuff that makes modern cars reliable...back in the 70's many high performance engines with an alloy block or head would have cooling issues....think Triumph stags, Jaguar V12s and Climax (imp).....it wasn't an engine fault it was was the lack of decent quality corrosion inhibitors and the lack of understanding of galvanic corrosion!
Infact lack of corrosion inhibitor was one of the reasons why Buick abandoned their alloy 215ci V8 engine!....which was later to be purchased by Rover
The antifreeze when dilutled 50:50 is what we typically call "coolant". This contains corrosion inhibitor and this is what stops the alloy corroding with the steel, copper and brass which is what is inside the cooling system (along with rubber, silicone/neoprene seals and plastics which don't tolerate the acidity caused by the corrosion).
History lesson: Its this stuff that makes modern cars reliable...back in the 70's many high performance engines with an alloy block or head would have cooling issues....think Triumph stags, Jaguar V12s and Climax (imp).....it wasn't an engine fault it was was the lack of decent quality corrosion inhibitors and the lack of understanding of galvanic corrosion!
Infact lack of corrosion inhibitor was one of the reasons why Buick abandoned their alloy 215ci V8 engine!....which was later to be purchased by Rover
02 February 2012, 11:46 PM
#14
Scooby Newbie
Thread Starter
when i put my new rad on did a 50/50 mix i bleed the system but still losing water. when i put the coolent in its a lovely green colour run the car for 10 to 15 mins the water goes a orange rusty colour and seems to be leaking near the over flow bottle near the battery and theres dry rust marks of the coolant on the chassis near the battery i want to fit the other parts i 've got ie fmic,exhaust,air filter and have it remapped but derent in case engine blows up
Last edited by craigz83; 02 February 2012 at 11:49 PM.
03 February 2012, 12:09 AM
#16
Scooby Newbie
Thread Starter
yeah my mate pleasure tested it and was spot on the thing is this is my first scooby i've always had blue ovals like fiesta rs1800,fiesta zetec s but have always wanted a scooby or evo. i'm starting to get frustrated with the car and thinking of buying my mates evo but really love my scooby hes told me its not head gasket he tested for it i really really don't want to get rid
03 February 2012, 12:34 AM
#17
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try taking it to somewhere that specializes in cooling systems i see you live near me in hull i live in york and i would take it to somewhere like
Autocool Radiators
Unit 36/The Raylor Centre/James St
York YO10 3DW
01904 438500
or maybe take it to a somewhere that specializes with scoobys, you could take it to a Subaru dealer,
1 in K T Green Ltd
Otley Road Pool in Wharfedale
Leeds West Yorkshire
LS21 3DA
T: 0844 662 6837
but it could be expensive, if some1 has been using just water it could be a lot of things best to get the whole system checked out by a specialist m8
Autocool Radiators
Unit 36/The Raylor Centre/James St
York YO10 3DW
01904 438500
or maybe take it to a somewhere that specializes with scoobys, you could take it to a Subaru dealer,
1 in K T Green Ltd
Otley Road Pool in Wharfedale
Leeds West Yorkshire
LS21 3DA
T: 0844 662 6837
but it could be expensive, if some1 has been using just water it could be a lot of things best to get the whole system checked out by a specialist m8
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