Question for those who've done a heater backdate
 

I've got an SC engine in my 72, so not really doing a backdate, just connecting the various pieces. I've just done a quick and dirty hookup to the passenger side (driver's side flapper box needs repair) and I'm wondering what, if any, air filtration people have used? I have a pretty nasty oil leak (RMS - engine's coming out this winter to repair) and I'm getting a lot of burnt oil smell inside with the heat on. Is there anything I can do in the short term to filter the air coming in? We've hopefully still got a few weeks of driving left before the car goes away for the winter (and surgery) but I definitely need the heat on!

the only to do is put tin to deflect the oïl of your heat box

Fix the oil leak :)

Give the engine a good bath and remove as much gunk as possible. You are not smelling newly leaked oil but the fumes from deposits once the block warms up.

I did that. I built a little dam/spout that helps divert the dripping oil away from the heat exchangers. It helped a lot, but not 100%.

Never thought of that - I'll give it a shot.

My '74 had this problem and the way I cured it was to fix the leaks as well as keep the engine spotless.

For cleaning, I spray cleaner in thru the fan, with the engine off, and let it soak in. Then with the engine running, I spray the hose right into the fan and it forces water onto the engine fins. This does a pretty good job of cleaning the engine and I've been told that this is a method used on the race track.

I recently removed my CIS and did oil leak maintenance. I was surprised to see oil was leaking right out of the low-oil-pressure switch that is on the top/back of the engine.

My next cleaning project is going to be getting some wire type cleaners (like pipe cleaners) and scrubbing between the fins from below. I suspect that there is ground in and stuck grime.

What type of a cleaner are you spraying through the fan? Would something like Simple Green work?

Simple Green works fine. I usually just use a strong mixture of water and dish soap. I had used a degreaser once but I stay away from those now because they are harsh and oxidize the aluminum.

Now that I've gotten my engine clean after several cleaning sessions, I am able to keep it clean with light soap and water. I really think the strong hose stream thru the fan (while the car is running) has helped keep the engine clean - I do it almost every car wash.