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> Cleaning Pistons, Best way to finish these question
jim_hoyland
post Oct 12 2016, 11:31 AM
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I had the Mahle 94 mm P&C pulled and replaced with 96mms
The pistons were cleaned with oven cleaner; now there are a few black carbon remaining. How should I proceed with removing them before looking for a new home ?


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jim_hoyland
post Oct 12 2016, 11:33 AM
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Will probley just use the oven cleaner on these too


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toolguy
post Oct 12 2016, 11:39 AM
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Be careful, oven cleaner can have lye [sodium hydroxide] as the active ingredient. . It
eats aluminum fast. . better to soak them in a solvent or bead blast.
If you want them to look like new, bead blast with plastic bead medium.
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StratPlayer
post Oct 12 2016, 12:00 PM
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Jim http://www.orisonmarketing.com/pistonkleen.html
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rhodyguy
post Oct 12 2016, 12:13 PM
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Chimp Sanctuary NW. Check it out.
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I wouldn't invest a bunch of time cleaning them up if you're going to try to sell them jim. Used engine parts. As is. You'll never see any money for your time.
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echocanyons
post Oct 12 2016, 12:25 PM
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What is your plan for your build?
Im guessing you planning on keeping the L-jet.
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rhodyguy
post Oct 12 2016, 12:29 PM
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Chimp Sanctuary NW. Check it out.
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He's moved/moving to a 2056.
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Optimusglen
post Oct 12 2016, 12:59 PM
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I have a gallon of Berrymans carb/parts cleaner that comes with a basket. Drop the pistons in one at a time and let them soak for a day or two, they'll come out and with a little scrubbing most of the junk should wash away.
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Mikey914
post Oct 12 2016, 01:20 PM
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Tell me that's not from your 1.7. That thing was really a sweet motor, in my opinion worth more as a whole, Unless you had some catastrophic failure???
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jim_hoyland
post Oct 12 2016, 01:38 PM
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I still have an L-Jet; installed new 1.8 heads, 96mm P & Cs, plus a few minor changes. It had a 2L crank fro when the 94mm P & Cs were done maybe 10 years ago.
Runs much better, hills that used to cause lugging and down shifting are easy now
All the parts I took off were fine except one cylinder head that had a striped spark plug threading on #3 cylinder. I want to clean all the part and get them ito someone in need of P & Cs
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r_towle
post Oct 12 2016, 04:32 PM
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See if you can find a drill pad that looks like a green scrubbing pad, mount in drill press and hold piston while running drill press fast. Not a lot of pressure so you don't scratch the aluminum too much.
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jim_hoyland
post Oct 12 2016, 04:36 PM
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QUOTE(r_towle @ Oct 12 2016, 03:32 PM) *

See if you can find a drill pad that looks like a green scrubbing pad, mount in drill press and hold piston while running drill press fast. Not a lot of pressure so you don't scratch the aluminum too much.



Excellent (IMG:style_emoticons/default/smile.gif) sounds like as plan
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NeunEinVier
post Oct 12 2016, 05:56 PM
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QUOTE(Optimusglen @ Oct 12 2016, 01:59 PM) *

I have a gallon of Berrymans carb/parts cleaner that comes with a basket. Drop the pistons in one at a time and let them soak for a day or two, they'll come out and with a little scrubbing most of the junk should wash away.


X2 on the Barrymans soak, vs abrasive cleaning with a scrubbing pad.
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jim_hoyland
post Oct 12 2016, 06:13 PM
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Like this:



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jim_hoyland
post Oct 13 2016, 05:03 PM
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QUOTE(jim_hoyland @ Oct 12 2016, 05:13 PM) *

Like this:


The guy at O'Reillys said Chen-Dip is not allowed in California ??
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Larmo63
post Oct 13 2016, 05:13 PM
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Glad you put a bit more giddy-up into your beautiful car!!!!

(IMG:style_emoticons/default/beerchug.gif)
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jim_hoyland
post Oct 14 2016, 06:16 AM
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QUOTE(Larmo63 @ Oct 13 2016, 04:13 PM) *

Glad you put a bit more giddy-up into your beautiful car!!!!

(IMG:style_emoticons/default/beerchug.gif)


Thanks for the compliment; two ore things to do; changing out the throttle body for a rebuilt Vanagon 2.1 TB, and looking to upgrade the exhaust/ headers/etc.

Made up over the toll roads hills last Saturday at speed for the first time.... (IMG:style_emoticons/default/smile.gif) And looking forward to the drive to WCR 2017 at Mammoth Mountain....


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r_towle
post Oct 14 2016, 04:42 PM
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Chem dip eats aluminum.
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veekry9
post Oct 15 2016, 01:01 AM
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https://www.youtube.com/watch?v=VcPkLuX4CAU

Reality check. (IMG:style_emoticons/default/dry.gif)

https://www.berrymanproducts.com/products/e...-parts-cleaner/
https://www.youtube.com/results?search_quer...an%27s+chem+dip

It is possible to de-coke the pistons and valves in situ,making a visual inspection simpler.
Used with an ultrasonic tub,the potmetal and alloy parts emerge immaculate,and undamaged.
Cleaning of aero parts is effected in a similar way,mil spec,have been for decades.
(IMG:style_emoticons/default/smile.gif)
/
Using the product,one would marvel at the results,like with the oil stained cylinder heads of your favorite air-cooled engine.
The stuff is fabulous,the aluminum or magnesium castings pristine.Trans shops use it to rework rebuilds,as new.
There are similar,competing brands,tho they are less eco-friendly,some are real nasty.
https://www.google.ca/search?q=gunk+carb+cl...SS5v9ilc8E_M%3A
(IMG:style_emoticons/default/smile.gif)
/
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