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Maintenance / Re: Running Hot?
« on: March 05, 2021, 04:28:04 PM »De-vane the pump - the rotor spins, but doesn't pump air, obviously. Block the vacuum tube for the divertor valve.
You can use roofing nails (galvanized) in the extension tubes - seals off the extension tubes, flat surface to seal on. Drop them in, tighten the tube fitting and you're all set.
My opinion - others ?
Regards -
Hi z28z11,
Old thread but I just devaned the smog pump on a ‘67 327 Malibu and now moving on to the smog tubes. At this point I’d rather not remove the exhaust manifolds so I’m interested in using galvanized nails to seal the tubes off.
I just want to confirm I drop the pointed end of the the roofing nail into the extension tube in the exhaust manifold so when I reattach the smog tube fitting it’s riding against the top of the nail head?
What size roofing nails do I use?
Should I apply any hi-temp RTV to the top of the nail head before reinstalling the smog tube fitting?
Thanks,
Mel