Hi Chaps, I have in my possession an LA 11(1444 cc) short engine that had been stored in a damp garage, which has resulted in Three out of the Four Pistons being seized in their respective bores.
They have been soaking in a mixture of Diesel & WD40, for over a month now, with only one seemingly allowing the " mixture " down past the Rings, I have even tried applying heat by means of a hot air gun, ( with the resulting smoke of course!!) .
Apart from removing the Crankshaft which would probably be the best option, any further ideas to enable me to free them would be gratefully accepted,
Cheers A'l
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Always look at "ACTIVE TOPICS" to see all posts in date & time order as they are sometimes moved; or look at "Your Posts".
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Seized Pistons
Re: Seized Pistons
Leave it for another month!
Nick.
Nick.
"Nick - do you think you will ever put that old car back together again?"
-
Simon Hyslop
Re: Seized Pistons
Try Coca cola - I was just going to say Coke but thought the better of it. It has great metal cleaning properties and pouring some onto the piston tops and letting it seep down may help.
Re: Seized Pistons
I can't understand why you would not want to take the crank out and thoroughly inspect all aspects of the stripped unit. If the pistons are as seized as you say then the crank etc will surly be just as bad !
Strip the lot and use a big hammer and a piece of would to thump the pistons out.
Strip the lot and use a big hammer and a piece of would to thump the pistons out.
Colin,
I may be slow but I’m rough as well !
I may be slow but I’m rough as well !
Re: Seized Pistons
Try soaking the cylinders in a 50:50 mixture of acetone and automatic transmission fluid. I read an article comparing various penetrants and this was supposed to be the most effective.
Trevor
Trevor
-
Dobbinridesagain
- Helpful Person
- Posts: 423
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- Location: Gloucester
Re: Seized Pistons
Plusgas is a more effective rust penetrant than WD40.
To change mixes of course, one would need to remove the previous potion.
Ivor
To change mixes of course, one would need to remove the previous potion.
Ivor
Re: Seized Pistons
Hi, Chaps, thanks for all of your suggestions, and yes, I cetainly do intend to strip down this short motor completely.
The strange thing is, that although there seems to be little or no Bore wear, the Camshaft looks to be in a pretty poor state, fortunately, I happen to have a spare that is in almost "as new" condition.
I will try the Coca-Cola option, just because I have some in "stock" , and Colin, I will of course remove the Crankshaft, to enable me to "persuade " those Pistons to move !!
Cheers A'l
The strange thing is, that although there seems to be little or no Bore wear, the Camshaft looks to be in a pretty poor state, fortunately, I happen to have a spare that is in almost "as new" condition.
I will try the Coca-Cola option, just because I have some in "stock" , and Colin, I will of course remove the Crankshaft, to enable me to "persuade " those Pistons to move !!
Cheers A'l