PY Online Forums - Bringing the Pontiac Hobby Together

PY Online Forums - Bringing the Pontiac Hobby Together (https://forums.maxperformanceinc.com/forums/index.php)
-   61-66 Big Pontiac TECH (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=428)
-   -   Header recommendation (https://forums.maxperformanceinc.com/forums/showthread.php?t=806444)

Keith Seymore 06-17-2017 08:20 PM

Header recommendation
 
My GP is the "mother of all exhaust leaks": I've just discovered my third cracked RH exhaust manifold.

I'd like to try a short tubular steel header and see if I can get past this and on to something else.

Anyone have a recommendation or a favorite for an inexpensive header for light driving (not Super high performance) use?

Thanks in advance -

K

66_Catalina 06-17-2017 09:59 PM

I have the cheap summit racing 2nd gen F body headers on my '66. It's pretty snug around the passenger A arm and the steering box but fit.

Willshire 06-19-2017 11:50 AM

Ram air restorations ceramic coated cast headers never leak. i mean ever. lol they use steel gaskets to seal and the mounts are super thick, because, well, they are cast iron. bahahahahahaha. Seriously though, they are fantastic. required a mini starter but otherwise great

Stuart 06-19-2017 04:44 PM

I wonder why your manifolds keep cracking? Seems unusual to me.

Willshire 06-19-2017 04:47 PM

I missed the "inexpensive" comment. My bad. Summit headers have 3/8" flange I think. Is your exhaust really tight? Is there lots of movement for the motor to twist? I too am curious about the cracking manifolds

66_Catalina 06-19-2017 05:03 PM

They're bolted on tight at the flange. Not a ton of room for the engine to twist around.

Willshire 06-19-2017 05:07 PM

I have found in the past if the exhaust system isolators are too loose and bouncy it has an effect on the manifold. Just a thought.

66_Catalina 06-19-2017 05:09 PM

http://forums.maxperformanceinc.com/...d.php?t=797164

66_Catalina 06-19-2017 05:29 PM

My system is pretty light. Headers, cherry bomb header glass packs, turn downs. Won't be a lot of flex


All times are GMT -4. The time now is 02:59 AM.