Quote:
Originally posted by bob barnes
Henry,
You might want to do a little investigating on the RTV730. It is not like your normal RTV. Woods introduced this product to me when I had a fuel cell leak once. It stopped the leak! It also cost $80.00 for a 3oz tube which should alert you to the fact that it's different.
I suggest you read the Dow Corning label/fact sheet. You might be enlightened. I just purchased another tube for my Race Engine sealing.
Bob
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Bob
Your post has an interesting tone and enlightened is an interesting term.
Generally research before spewing drivel is recommended.
# Limitations as listed by Dow http://www.skygeek.com/rtv730-3oz.html
Dow Corning 730 Solvent Resistant Sealant is not recommended:
# For continuous underwater immersion where adhesion or structural bonding is required
# On concrete, brick, mortar or other masonry surfaces
# On surfaces to be painted; paints do not adhere well to sealant (paint before applying sealant)
# On materials such as impregnated woods or oil-based caulks that bleed oils
# In totally confined areas; atmospheric moisture is required for cure on Teflon1-coated materials, polyethylene, polypropylene or methylmethacrylate Plexiglas2); sealant will not adhere well
# On or near sensitive metals such as copper, brass, zinc, carbon steel, galvanized iron or magnesium; these metals may be corroded, especially in confined cure conditions, due to the acetic acid released during the cure
# With solvents such as acetone or ketones
The last time I checked base gaskets were made of copper, biral cylinders are made with carbon steel and Porsche cases and ancillary parts from 1968-1977 were made from magnesium.
We choose products bases on their compatibility with all Porsche engine components.
Thanks for the lesson. Feel free to offer advise whenever you feel like jumping in.