General Category > Quadrajet Carb Talk and Tips

The BEST Cleaning Method ?

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Ethan1:
 Purple Power is not as good as it used to be, I think at least. Don't know if it will harm carb parts though.

omaha:
The purple power works decent. One thing I have found is that if you mix it with some water and then use some heat (about 175-180) it works much better. I use an old electric roasting pan that I found at a thrift shop. However you can buy them new at walmart and they are not too expensive. they are un the small appliance section and they can put out some serious heat if necessary. (like 350+ degrees) you don't need that much heat but you could use that heat to unwarp a main casting or top.  (I have done that with a special fixture that I made). Anyway, I also mix in a couple table spoons of moisturizing hair shampoo to act as a surfactant. the moisturizing shampoo has a more acidic ph. I like to experiment with common products. I tried also mixing in some lemon pine-sol and it seems to work good. so right now my mix is this: 1 1/2 gallons of water, 2 cups of purple power, one cup of pine-sol and 2 tblspns of the shampoo.
Mix it all up and get the temp up to 175 and "boil" the carb (sort of) for about 1 hr. remove the carb and rinse with water. repeat process til results are satisfactory. check every so often so you don't over do it. Good luck!!

PMD1969:

--- Quote from: omaha on March 06, 2013, 04:18:20 PM ---The purple power works decent. One thing I have found is that if you mix it with some water and then use some heat (about 175-180) it works much better. I use an old electric roasting pan that I found at a thrift shop. However you can buy them new at walmart and they are not too expensive. they are un the small appliance section and they can put out some serious heat if necessary. (like 350+ degrees) you don't need that much heat but you could use that heat to unwarp a main casting or top.  (I have done that with a special fixture that I made). Anyway, I also mix in a couple table spoons of moisturizing hair shampoo to act as a surfactant. the moisturizing shampoo has a more acidic ph. I like to experiment with common products. I tried also mixing in some lemon pine-sol and it seems to work good. so right now my mix is this: 1 1/2 gallons of water, 2 cups of purple power, one cup of pine-sol and 2 tblspns of the shampoo.
Mix it all up and get the temp up to 175 and "boil" the carb (sort of) for about 1 hr. remove the carb and rinse with water. repeat process til results are satisfactory. check every so often so you don't over do it. Good luck!!

--- End quote ---

Are you talking about a Crock Pot?  The local Wally only had one double hot plate but a couple cheap 7 quart Crock Pots.  I couldn't find a temperature rating anywhere but the theory does seem sound.

PMD1969:
The magic potion is brewing.  I found a 7qt Crock Pot at Wally and some Purple Power.  I mixed in the brew you suggested and placed in a sacrificial Rochester 1bbl.  The pot has gotten good and hot and the brew has no bubbles and is good and stinky.

I am leaving it on all night and will check on it in the morning.

PMD1969:
Well the results have turned out to be pretty good.  The 1bbl carb was good and oily, lots of crud and some baked on stuff.  It cleaned up rather well and did not eat off anything.  The only place that did not clean up was the bottom of the carb that was closest to the manifold.  There the oil had become one with the carb due to high heat so I will have to do something else to get that off.

The 1bbl was pretty well locked together and was not separating.  I soaked it overnight and in the morning all of the gasket material peeled off easily and the carb separated.  I am going to continue to clean it with some cheap Berryman Carb Spray and compressed air.

Crock Pot (7qt) = $25 (Quadrajet does fit)
Purple Power = $5
Pinesol = $3
Shampoo stuff = $1

I have a spare Quadrajet brewing at the moment along with other pieces.  Thanks for the advice!

Now I need to buy some rebuild kits and parts from Cliff  ;D

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