MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - K & N Filter Grease

I just painted up a set of "Bob Filters" with parts from the Home Depot & K & N. I feel a little grease on the filter would insure a good seal, but don't have any K&N filter grease, just wondering if any of you feel vaseline or some other grease will work OK? I don't want any leaks, the back side is sealed with a rubber gasket.
Joe

Joe. I have never heard of K&N filter grease. I should suspect that the plastic ends of the filters would seal minor imperfections. Major imperfections should be deal with by finding what is causing the problem and correcting it. If you cannot correct it, how about a little Vasoline, Pam or Johnson's floor wax on the plastic of the filter and some silicone sealer to make a tight seal. The release agent will keep it from sticking to the filter and causing a problem. Les
Les Bengtson

You could use that extra sticky "grease" used as poly bushing "lube". However, when I made up my plastic wall protector end plates, I used about 1/16" thick ensolite sheet foam glued to the backside of the protector/end plate to create a seal. A friend has used 1/8" thick blue foam for the same purpose. Neither of us has had any trouble with the end plates or the back plates not sealing. If you do, and you made up your own tubular spacers for the filter mounting bolts, check to see that they are about 1/8" shorter than they need to be to cover the distance from the flange of the rear mounting plate to the outer lip of the K&N filter. This will ensure some tension on the end plate for a decent sealing force.
Bob Muenchausen

Joe, you obviously have looked at the K&N catalog more recently than I. I just noticed today that K&N does indeed sell filter sealing grease. My guess is that it is the thing to use! Victoria British sells it, FWIW.
Bob Muenchausen

Joe-
Just measure the outside and inside diameters of your filter and then go down to your friendly local plumbing supply store, purchase a pair of compressible rubber gaskets, and simply glue them into the covers. Much less mess.
Steve S.

Joe,

Try silicone grease. It's sticky, doesn't melt and flow like vaseline, and it doesn't harm rubber. You can get it from various places including scuba diving shops, and I wouldn't be surprised if it's not the same as the genuine K&N grease.

Cheers,
Jim
Jim Aitken

When my son raced motocross bikes we used regular wheel bearing grease. If applied
properly it kept the sand and mud out of the engine.The end caps of the K & N filters
appear to be neoprene and should not be harmed by a little grease. On my MG's I made
some gaskets from cork gasket material and glued them to the back of the aluminum
covers I cut for the filters. My carbs stay clean inside and it's a lot less messy than
grease. Regards, Clifton
Clifton Gordon

I think Moss motors has the K&N filter grease.
JG Bowman

What's a "Bob filter"?

Thanks.
Larry Bailey

Larry-
For an explanation of the "Bob Filter", click on this: http://www.hotelling.com/mgb3.htm
Steve S.

This thread was discussed between 23/05/2002 and 27/05/2002

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.