Coolant

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no it will freeze in your engine first because the steel/iron will be colder than the plastic expansion bottle. core plugs are metal discs which are used to seal holes made when the engine was cast. thes can corrode, and leak and if the engine freezes the pressure can also pop the discs.
 
ffs! Just what I needed after a rebuild. I think I know which little discs you mean. Aren't they only on the outside of the main block though, so I would be able to see any damage?
 
another problem if yer water freezes is that the water pump can't turn if its in ice. also if yer water is frozen the heat generated by the engine can't be got rid of until it thaws and also if its frozen you run the risk of cracking the block or head.
 
Well there's no water so I'm assuming everything is alright! I did think that I should have checked before I started my engine but just said to myself - "it'll be fine", wish I had done though, cos I wouldn't have entertained starting it.

With regards to the water pump, wouldn't my fan belt just have slipped around the pulley if it couldn't move? I don't think that there is any real damage done, but I will be flushing the system out this weekend because it's not running just as cool as it was. The needle now moves to the half way mark as opposed to just between the 1 quarter and half way marks and I preferred it that way.
 
pos said:
Well there's no water so I'm assuming everything is alright! I did think that I should have checked before I started my engine but just said to myself - "it'll be fine", wish I had done though, cos I wouldn't have entertained starting it.

With regards to the water pump, wouldn't my fan belt just have slipped around the pulley if it couldn't move? I don't think that there is any real damage done, but I will be flushing the system out this weekend because it's not running just as cool as it was. The needle now moves to the half way mark as opposed to just between the 1 quarter and half way marks and I preferred it that way.
Click to expand...

arnt thay supposed to sit at the half way mark
shadowster
 
don't know! I dont suppose four new pistons with far better compression will have added a few extra degrees will it?
 
why not? if yer increase pressure yer increase temp..newtons law? well one of them

plus with the increase efficency yer get more heat generated
 
probly would make a difference on yo gage, but there only a guide.

best way imo to keepyer antifreeze level safe is to premix to the recomended level, and use it too fill, and also top up.
I work on 20%.


use only water in any engine only temporarily!
 
Ivor Deenie. said:
probly would make a difference on yo gage, but there only a guide.

best way imo to keepyer antifreeze level safe is to premix to the recomended level, and use it too fill, and also top up.
I work on 20%.


use only water in any engine only temporarily!
Click to expand...

Thanks for the advice, I've been told it needs 4 litres of anti-freeze, so will be draining, flushing (not backwards) and refilling this weekend.
 
pos said:
Oh aye, quite a considerable bit more up hills, but nothing extra-ordinary. It can only get better this next month as well can it not?
Click to expand...

Well there you go, more power = more heat generated.

You want it running about 1/2 way up the temp guage, only worry when its well in the red and has been there for a while and there is steam and boiling water flying about the place.
 
That's sound advice too thanks. I had been in the red some time ago (when my fan belt snapped but somehow managed to hold its self in position therefore not looking broken) with steam blasting out which is what I think will most probably have caused cracked pistons. It hasn't been anywhere near the red - wouldn't let it get there, but is sitting at half way all the time now.
 
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