after many many years i am ditching my headers and restoring my car back with my original manifolds i just had some cracks silicon/bronze welded and they came out nice i also spent 2 days getting the rusted heat riser out ,that was a pain

I need help with someone that may have a pic of how the new riser is installed i don't know what position the counterweight/spring need to be in and i couldnt use my old one as a reference because it was broken
I am going to miss the sound of the headers but they were ALWAYS IN THE WAY of something when working on the car also i am not going to miss the underhood heat generated by them

thanks

 

is that the part on the 69 w z manifolds only ? if yes I have some on the bench I will try to snap a pic tomorrow

 

That would be great! Yes the W Z manifold

 

LMK if this is the pic you need or something else.

while on topic of W Z one of my mating surfaces has some pitting, should I just use the gaskets availible for them or can/should I try to have the mating surfaces resurfaced and if resurfaced do I need to worry about how much material is removed like when milling heads and the intake needs to be milled as well at some point ?

 

thanks, that pic looks good but is the butterfly valve closed and does it still have the tack welds on the shaft?? thats the 69 w right i cant see the whole part in the pic

you dont have a lot of material to mill them if you take maybe more than .020 your going to be almost flush with casting body... i think some pits are fine if you use the right gasket i have some fluffy carbon fiber ones with the metal in the middle made by percy's they say they are good for less than perfect surfaces

 

yes 69 W

IDK on the butterfly that flap has been removed that position is where the spring wants it to rest, ill try to snap another pic tomorrow to show the BF too.

I see what you mean now by there is not much material there to mill

pics below show a smooth spot on the mate surface (Z side) and a pitted spot W side.

unfortuntely the pics make it look much worse as even the good spot shows rough as well but you can see the amount of material before hitting the body..thanks for the info

good part



pitted part

 

they look fine,i think once cleaned up and a good gasket you wont have any leaks,

 

couple more pics of the heat riser biz

 

Try dressing the manifold with a large file. Hold it steady in a vise.