engine water flush?

Side valve, 803, 948, 1098., 1275 and Vizard mods

engine water flush?

Postby sawnee » Thu Jun 06, 2013 9:33 pm

Hi folks, a bit of info needed from a newbie
My MM has been sitting for many years and although it runs well it has had no water in it for a very long time.
What is the best way of clearing out the crud from inside the block?
I have the rad out and most of the hoses are shot so will be replaced shortly but I would like to get the worst of it out before putting a new rad in and filling it with all sorts of nasties.
Is there a better way than just sticking a garden hose in the water pump?
Are there any additives that will shift the crud from inside the engine?

Be gentle its my first proper "question" post :D
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Postby bmcecosse » Thu Jun 06, 2013 10:02 pm

Garden hose is a good start -quick before it gets 'banned' - it hasn't rained for nearly a week..........  There are some proprietary flush compounds - some just use drain cleaner - basically sodium hydroxide - but not good for alloy parts so only leave it in there for one heat cycle - then flush it all out very thoroughly.
 









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Postby woodywoodchipper » Thu Jun 06, 2013 10:04 pm

garden hose sound's good, better still if thermostat is out,

cant' really put any additives in till its built back up again,


rad flush available from local motor shop, halford's etc,

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Postby sawnee » Fri Jun 07, 2013 5:51 pm

Thanks for the answers, I will whip the thermostat out and give it a good wash through running the water both ways.
Im of to Bromley pagaent on sunday so hopefully a new thermostat and gaskit will be in goody bag before hometime then I will stick the rad back in temporary to give it a proper run up with some "drain cleaner" in.
I"ll post up how many core plugs I need after I count the leaks LOL
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Postby ruairidh » Fri Jun 07, 2013 8:09 pm

Not sure if caustic soda is a good idea or not.
I'm sure somebody will advise.
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Postby woodywoodchipper » Sun Jun 09, 2013 8:08 pm

with the rad back in, dissolve some dishwasher tablets in hot water and pour that in before filling it up then run it till it gets good an hot then drain and rinse,

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