[02Hawk]

I am in the middle of finishing up an engine swap in my 70 Judge....Everything pretty well has gone all right until I twisted and broke the fitting that was in front of the carb and connected to the PCV via 6 inches of hose. Snapped the fitting at the T (picture below) . After a few choice garage adjectives I realized I had a spare (in Brass). I went to install it and it didn't fit....3/8's NPT and my intake has 2 ports, one being 1/4 NPT and the other 1/2 NPT....

Checked my 2 other intakes and all the same.....I now have to take the intake off and drill and tap the hole to 3/8's .....SON OF A BI.....!

just needed to vent

[GtoFM]

Is the 1/2" port free? Could you use a 3/8x1/2 brass bushing in the 1/2" port to get it up and running until the correct fittng arrives?

[Firebob]

Yeah go to the hardware store and buy a $3 bushing and you're golden. I wouldn't even worry about replacing later unless you just don't like the way it looks.

[Joe's Garage]

The factory intake manifold is designed with a hole in that specific spot so that the crankcase fumes are shared between the two planes of the intake.

Thus that extra hole drilled into the length of the tube just below the threaded portion.

It's designed to bleed off fumes into one side and the hole on the bottom end of the tube is for the other side. That way there won't be 'over-dilution' of either intake plane. They will share the fumes fairly equally.

While you can put the fitting anywhere it will thread in, it really needs to be in that factory-designed spot to function at 100%.

Is it the 9799068 casting number intake on the engine? We might have a spare fitting we could trade you for the brass one.

[Tom Vaught]

Originally Posted by Joe's Garage

The factory intake manifold is designed with a hole in that specific spot so that the crankcase fumes are shared between the two planes of the intake.

Thus that extra hole drilled into the length of the tube just below the threaded portion.

It's designed to bleed off fumes into one side and the hole on the bottom end of the tube is for the other side. That way there won't be 'over-dilution' of either intake plane. They will share the fumes fairly equally.

While you can put the fitting anywhere it will thread in, it really needs to be in that factory-designed spot to function at 100%.

Is it the 9799068 casting number intake on the engine? We might have a spare fitting we could trade you for the brass one.

Agree with above. You do not want PCV flow on just one "plane" of the "Dual Plane" Intake manifold.

Tom V.

[02Hawk]

Thanks for the offer Joe's and the advice.....i have a buddy pulling an original one off one of his many stashed intakes.