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K&N filters on 100/6 1959

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Leon AH

Freshman Member
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Hi BCF-members,

I've installed K&N filters on my '59 100/6. The filters have no connection for the crankcase vent. I want to use one of the holes in the manifold. There are two, one for the servo boss and one for the vacuum take off. Anyone knows the thread on these plugs? Is it a good solution anyway?

Grtz, LĂ©on
 
I don't think you want to hook direct vacuum to the crankcase vent. You will suck oil into the intake and turn your car into a mosquito fogger, unless of course you are using some kind of pcv valve with a check valve.
 
healeyblue said:
I don't think you want to hook direct vacuum to the crankcase vent. You will suck oil into the intake and turn your car into a mosquito fogger, unless of course you are using some kind of pcv valve with a check valve.
Click to expand...

If you vent into the the manifold boss you will have to run your rear carb real rich to compensate for the extra air input. My engine builder came up with this:

IMG_0418.jpg

He all but refused to install a rear seal, but with this setup my BJ8 doesn't lose oil through the rear of the crank.
 
That looks very nice. I tried running the GM PVC (ala, Nock), but I could not get it to perform consistently. I think the problem is that they are designed to run vertical (stuck in a V8 valve cover). As an experiment I plumbed in an MGB PCV. It works so well that I have kept it in place for 10 years now.
 
You have to remember that re-routing the crankcase vent to the carb filter was just a cheap fix for an environmental issue. I personally don't like the idea of putting that gunk back into the intake. Mine evacuates to a catch tank under the wing which has a filter attached to it.
 
Bob_Spidell said:
If you vent into the the manifold boss you will have to run your rear carb real rich to compensate for the extra air input. My engine builder came up with this:

View attachment 49844

He all but refused to install a rear seal, but with this setup my BJ8 doesn't lose oil through the rear of the crank.
Click to expand...
Anybody that can accurately/uniformly bend tubing (I'm guessing PVC-covered copper?) is OK in my book.

attachment.php


That's an elegant solution, not calling out any undue attention by being so compact.
 
I think it's steel tubing but, actually, I never looked that close. The mechanic--Kevin--is a New Zealander who is extraordinarily meticulous; he's also a licensed A&P (Airframe & Powerplant; i.e. airplane mechanic). He got really excited when he saw 'Weslake' on the BN2 head we had him rebuild.

I ran with PCV valve into the rear port on the manifold for many years and miles, and expected a lot of gunk on the rear cylinders, but there really wasn't much:

Cyl Head.jpg

manifold2.JPG

I'm guessing using (mostly) 'top-tier-like' gas, with all the additives, may have helped.
 
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