My Regal was acting up recently. After inspecting around I found a vacuum leak. There is a crack in my Qjet's baseplate by under the brake booster port. Already bought a 86 LG4 parts donor off of Ebay to fix my 86 L69 carb. I will have to gage the idle and bypass air ports to make sure they are the same size. I believe most of the differences between the two carbs are the jets, rods, and AV setting.
When I unbolted the Qjet I found the front of the mounting gasket, the tab that goes under the front well plugs was wet with gas. Took a look at the front well plugs and they were damp with gas. Looks like that needs fixing too but not sure how. Just smearing sealant over the plugs does not last long from what I read. Cliff Ruggles suggests to drill the plugs out, tap the bores, and install threaded plugs with Marinetex. However, I heard reports of the Marinetex failing, even with the plugs due to heat cycles. Some people suggest to use Permatex sleeve retainer instead as its meant to lock cylinder sleeves and valve guides in place. Another solution I heard is to simply drive the plugs a little further into the bores, and then punch the centers. Not sure sure which way to go.
When I unbolted the Qjet I found the front of the mounting gasket, the tab that goes under the front well plugs was wet with gas. Took a look at the front well plugs and they were damp with gas. Looks like that needs fixing too but not sure how. Just smearing sealant over the plugs does not last long from what I read. Cliff Ruggles suggests to drill the plugs out, tap the bores, and install threaded plugs with Marinetex. However, I heard reports of the Marinetex failing, even with the plugs due to heat cycles. Some people suggest to use Permatex sleeve retainer instead as its meant to lock cylinder sleeves and valve guides in place. Another solution I heard is to simply drive the plugs a little further into the bores, and then punch the centers. Not sure sure which way to go.
