Prior to reconditioning my Concentrics I soaked all parts in petrol hoping to release calcium? deposits but alas it did no good, could someone suggest a more satisfactory way to proceed?
Many thanks
Jim
hi you need to get it ultr…
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Hello (Jim...? Robert....?…
Hello (Jim...? Robert....?)
What areaare you in?
A friend of mine, who is a very good & experienced engineer (40 years specialising in David Brown Aston Martins) and has owned and restored Ducati 750 Sport, BMW R90S, Guzzi LeMans etc, etc. As well as personally building a successful Aston Group C V8, has the top quality Ultra-sonic cleaning gear & knows how to use it properly.
He's a great character. Very enthusiastic and will not be satisfied in anything less than a result.
He is based near Kings Lynn.
If you have contact details available let me know.
If you would rather not display them, we can work out communication through a 3rd party NOC branch secretary.
Paul
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I would not expect the dep…
I would not expect the deposits to be calcium as the solubility of calcium salts in petrol must be as near to zero as is possible. More likely you have some of the brown gummy deposits that seem to drop out of old petrol after evaporation these days. They are very tenacious, but if you can remove them before ultrasonic cleaning, it will make the job easier.
The best way I have found to remove these is with a powerful paint stripper. Unfortunately, EU legislation has banned the sale of the much lamented Nitromors with effect from December 6th. 2011 and the old product which worked so well is no longer available. There is a replacement product under the same name which is based on a different solvent system that complies with current legislation. It is more environmentally acceptable, less harmful and absolutely useless. I guess Polystrippa has gone the same way.An alternative approach is to use a proprietary aluminium cleaner - no, not a caustic or alkaline based one - but something like Alukleen if you can still find it. I suspect that Frosts sell a similar product but I have never used it. I think that the hand car wash places have something in that line as well - you are looking for the stuff they spray onto the hub caps to remove brake disc deposits.
If you do use one of these, bear in mind to observe the recommended dilutions as they are eating away the aluminium to a certain extent. When these are used neat on alloy, it will fizz, corrode and ultimately diappear.
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Previously wrote: Hello (J…
Previously wrote:
Hello (Jim...? Robert....?)
What areaare you in?
A friend of mine, who is a very good & experienced engineer (40 years specialising in David Brown Aston Martins) and has owned and restored Ducati 750 Sport, BMW R90S, Guzzi LeMans etc, etc. As well as personally building a successful Aston Group C V8, has the top quality Ultra-sonic cleaning gear & knows how to use it properly.
He's a great character. Very enthusiastic and will not be satisfied in anything less than a result.
He is based near Kings Lynn.
If you have contact details available let me know.
If you would rather not display them, we can work out communication through a 3rd party NOC branch secretary.
Paul
Hi Paul,
I'm common Jim, Robert James actually, Live at Dunster,Minehead, outback south west, guess my area would be Bristol, a bit closer to humanity!
Many thanks for your reply, my email address is chiptar1@btinternet.com would be grateful for more information.
Is it blowing up your way ha ha!! gusting down here in the wild west!!
Regards Jim
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Previously wrote: I would…
Previously wrote:
I would not expect the deposits to be calcium as the solubility of calcium salts in petrol must be as near to zero as is possible. More likely you have some of the brown gummy deposits that seem to drop out of old petrol after evaporation these days. They are very tenacious, but if you can remove them before ultrasonic cleaning, it will make the job easier.
The best way I have found to remove these is with a powerful paint stripper. Unfortunately, EU legislation has banned the sale of the much lamented Nitromors with effect from December 6th. 2011 and the old product which worked so well is no longer available. There is a replacement product under the same name which is based on a different solvent system that complies with current legislation. It is more environmentally acceptable, less harmful and absolutely useless. I guess Polystrippa has gone the same way.An alternative approach is to use a proprietary aluminium cleaner - no, not a caustic or alkaline based one - but something like Alukleen if you can still find it. I suspect that Frosts sell a similar product but I have never used it. I think that the hand car wash places have something in that line as well - you are looking for the stuff they spray onto the hub caps to remove brake disc deposits.
If you do use one of these, bear in mind to observe the recommended dilutions as they are eating away the aluminium to a certain extent. When these are used neat on alloy, it will fizz, corrode and ultimately diappear.
Many thanks Paul , have taken it all in, thanks for sorting my communication problem out! easily solved if you know how. Regards Jim
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The deposits are usually v…
The deposits are usually varnish caused by oxidised fuel and blown back oil.
I find that cellulose thinners removes them . Soak the parts for, say, 20 minutes and then clean with a stiff brush. One with brass bristles is ideal but any stiff brush will do. You can buy an ultrasonic cleaning bath for about £25, but unless youare doing a lot of cleaning, this is not a sound investment.
If you use cellulose thinners, observe all sensible precautions, good ventillation, no naked flames etc.
Good luck
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Previously wrote The best…
Previously wrote
The best way I have found to remove these is with a powerful paint stripper. Unfortunately, EU legislation has banned the sale of the much lamented Nitromors with effect from December 6th. 2011 and the old product which worked so well is no longer available. There is a replacement product under the same name which is based on a different solvent system that complies with current legislation. It is more environmentally acceptable, less harmful and absolutely useless. I guess Polystrippa has gone the same way.
Dichloromethane, the active component of Nitromors, is still available cheaply on Ebay in up to 5L volumes. It evaporates rapidly as it's without the additives that form the gel in Nitromors etc so it's best to put the carb or part in a closed container.
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Before you use di-chlorome…
Before you use di-chloromethane you should read carefully the hazard sheet. It is highly volatile and is an accute inhalation hazard. It metabolises in the body to carbon monoxide, skin contact can cause burning,long term exposure leads to cancer. Use with extreem care, protect yourself against skin contact, ensure good ventillation and for preference use something else.
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hi you need to get it ultra sonicaly cleened id say buy a ultra sonic cleener but the expensive but there are some places that will do it