SOHC.co.uk Forums > CB750

Ultrasonic bath Solution

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exvalvesetdabbler:
Here's what we use in the labs where alkaline cleaners would attack some metals.

http://www.decon.co.uk/english/neutracon.asp


For cleaning carbs particularly where there is varnish I have found the methylated spirit found in hardware stores will help break it down. Place the carb in a beaker and fill it with meths. Float or stand this in the ultrasonic bath filled with warm water.

****Do it outside***!!!!

It may take a few sessions but eventually the varnish will turn to a powdery depost that can easily be brushed off or dislodged by repeated sessions in the bath.

Don't use washing up liquid on monkey metal because it has salt in it and this can get into the pores and lead to white deposits further down the line unless you leach it all out.


DJW

MeilakJ:
Many thanks for all detailed replies!! Will have to see now what I will manage to sort Locally here in Malta of these products!!


Thanks for the help :)

gtmdriver:
This is a before and after of a pair of alloy throttle bodies cleaned using only dishwasher liquid in my ultrasonic cleaner.



I have never noticed any discolouration on alloy using dishwasher liquid but it may depend on the specific product used.

kent400:
Impressive resuilt that! I've always used specific carb cleaner fluid but i'm unsure if it's any better that diluted flash. Maybe if you reveal which dishwasher fluid you used and the tempreture I'll give that a go.

With regard to the jets and other small parts I wire them on the basket rather than just drop them into the tank and rattle around. That seems to produce a better resuilt. Paint thinners removes varnish quickly prior to ultra sonic cleaning

gtmdriver:
Finish Classic Liquid at 50 Celsius (that's as high as my tank will go).

I hope this thread doesn't deteriorate into a discussion of the merits of different dishwasher detergents.

I use the ultrasonic bath first then use cellulose thinners (or carb cleaner but it's more expensive) to remove any petrol residues remaining but to be honest they don't usually need further treatment.

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