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I will be installing an Offenhauser 4 bbl intake manifold and factory Ford dual exhaust manifolds on my 300 six. I have read posts referring to "crush washers"? Are the crush washers the thick cupped washers used on the factory single exhaust manifold? Can they be reused or is it better to get new ones?
Yes, They are the thick washers that provide a little "springiness" to the clamping joint. They can be reused. I like to slightly chamfer their edges so they don't dig into my aluminum intake lugs.
If you want to use the crush washers, definitely reuse the originals, since last I checked, Ford wants about $10 ea. for them. With 13 washers, that comes to $130. Ouch.
As for me, when I did mine, I ordered a set of super thick washers:
Those are some hefty, heavy duty pieces too. I wasn't sure the size I needed so I bought 13 of two different sizes (both around 1" in dia). They worked great.
I got them a little bit bigger than the stock crush washers because they spanned the ears of the manifolds a lot better. The stock ones seemed to just want to nip the corners, which I didn't feel safe with.
If you want to use the crush washers, definitely reuse the originals, since last I checked, Ford wants about $10 ea. for them. With 13 washers, that comes to $130. Ouch.
As for me, when I did mine, I ordered a set of super thick washers:
Those are some hefty, heavy duty pieces too. I wasn't sure the size I needed so I bought 13 of two different sizes (both around 1" in dia). They worked great.
I got them a little bit bigger than the stock crush washers because they spanned the ears of the manifolds a lot better. The stock ones seemed to just want to nip the corners, which I didn't feel safe with.
Thanks for the tip! Just an idea, but could I use standard thickness grade 8 washers underneath the factory Ford crush washers?
If you want to use the crush washers, definitely reuse the originals, since last I checked, Ford wants about $10 ea. for them. With 13 washers, that comes to $130. Ouch. Buy the washers from an FTE sponsor and save a buncha bucks.
E7TZ-9443-A (replaced EAA-9443-A ~ D1AZ-9443-A ~ E6TZ-9443-A) .. Crush Washer-Intake & Exhaust Manifolds to Cylinder Head / Available from Ford