has anyone had flang problems? I have had the headers for a few year but in my young age did not see that the pips were not flush with the flanges. Should I have them ground flush. I guess that this answer the question on why I could never get them to seal right

The part of the header that seals against the head, should have a weld "ring", around the port. Do not grind this flush to the flange. If you are trying to use a stock gasket, that might be your problem. Try using a gasket from Mr Gasket, or the Cox Bros. My self, I use the Cox Bros gasket.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Thanks for the info. I just gaged the weld rings and they very from .021 to .043 inches from the flange, is this ok. On the other hand I am using the clifford gaskets. When I bought the intake and head from them I bought a couple extra

My neighbor had a set on his 66 Barracuda. His problem was that the header flange was not the same thickness as his intake manifold. When you torqued the bolts the triangle washers they were at such an angle that the header would not seal. We cut some spacers from some washers that we put under the triangle washers to solve the problem...in sortof a crude way.

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1966 Signet
Turbo Slant Six

Hooker made headers for the SL6 that had a thinner flange, they came with spacers to make-up the difference.
All the headers I have ever worked with were never flat accross the flange, I always grind them "dead flat" before installation and never have a sealing ptoblem.

Some header flanges are so warpped that I have to machanically bend the header flange as straight as I can before doing the resurfacing. I measure the flange first to find the high and low points then place the unit on to a head with-out the gasket. I slip shims (flat iron) under the high spots, then "draw-down" the low points using the mounting hardware. Once it is mounted on the head (with-out the gasket)you can see the high and low spots by shining a light thru the joint.
DD

I also have sealing problems right now with headers don't know what they are but was told they were cliffords also thinner than my weiand intake..

going to use cox gasket see if it will cure the problem...

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