Footwell vents

These are typical 356 heater slide vents - not louvered though. Repros (left) are about $20 each at vintagespeedsterparts.com.

If you have them, the floor vents should be in the frame rails along the sides just to the outside of your feet and just above floor level.  The heat on CMC and VS cars uses the frame rails along the body seam as air ducts.  Beck and IM have their heater outlets in about the same place, and there are two flexible ducts from behind the dash at about the tops of the doors over to the windshield dash vents.

The floor vent openings might be carpeted over, so try poking a nail or hand awl through the carpet about 2" above the floor along the middle of the side frame outboard from where your feet are and see if you find the holes.

What kind of diesel heater are you using and why are you going with diesel instead of regular gasoline?  Either will heat just as well, but you'll have to carry a small, extra diesel fuel tank if you go that route, whereas you already have a gasoline tank.  

Just curious.

Sidenote... my repo vents still rattle. With minimal success, I tried sticking half a velcro to the back to reduce vibration. But I haven't found an elegant solution.

Anyone else solve the vent rattle?

I'd pinch the tracks that the slider runs in a bit.

Ryan, maybe take the vents off, turn them over, and gently smack the guide to squeeze it closed a little. That should work. Put the pretty side on something soft, like a few layers of rag on a block of wood.

I put some rubbery stuff on the backside of the sliding part.

@Michael McKelvey posted:

I put some rubbery stuff on the backside of the sliding part.

Take it easy with all of that technical talk Mike. You’ll scare some of the guys.

😱

https://www.speedsterowners.co...0#659272931122337420

going diesel because its cheaper, and diesel seems to be safer from what I've read.  just need a small fuel canister. and lotsa heat.