[BamaNomad]

There was an article in this month's Nomad Post entitled 'Station Wagon Effect' which addressed the issue of running the exhaust straight out the back of your car, especially if you have a Station Wagon (or possibly a convertible). Due to the low pressure at the rear of the car, it's possible that the exhaust gases can be drawn back into the car if the exhaust are ran out the rear. Apparently this is why the factory exhaust were ran out of the corners of the car (or behind the rear wheels).

EDIT. I SHOULD have added that this was a reprint of an article that ran long ago back in the NNC days, and was NOT a new article (or a newly discovered effect). This has been known for a long time, but recently there have been some discussion about running tail pipes straight out the back under the bumper (which does look good), but may not be the best routing..

 

[kbuhagiar]

I can't speak specifically about Nomads, but when I redid the exhaust on my 1976 Blazer many moons ago I made the mistake of running the duals straight out the back under the bumper. Big mistake, as I couldn't run with the tailgate window lowered anymore, as the fumes would inundate the interior.

I eventually remade the pipes to exit behind the rear wheels and that solved the problem.

 

[BamaNomad]

PS. I made an edit to my first post to add that this is NOT newly known information.. but has been known for a long long while (many years back to the 50's), and it may not be isolated to just wagons...

 

[davidc]

WELL...if I don't post anymore...that may be a reason...

 

[BamaNomad]

In a few days, we'll be asking... whatever happened to DavidC??

 

[davidc]

I doubt that will be it Gary. Don't drive my car enough to pass out....

 

[Greg's 56 Nomad]

Well, that makes me feel better.
I was always a bit disappointed that one of the PO routed the exhaust pipes to exit just past the rear wheels.
I was even thinking that someday I might do some fabrication work to get them to exit out the back of my wagon.

 

[zookpr]

PS. I made an edit to my first post to add that this is NOT newly known information.. but has been known for a long long while (many years back to the 50's), and it may not be isolated to just wagons...

All wagons and Suburbans that I had with factory exhausts exited out the sides behind the wheels. There were warnings on some to keep the rear window closed. Also applied to many years of El Caminos. Common street talk was that this was to avoid fumes rising on the tail gates gates.

 

[angs1957]

WELL...if I don't post anymore...that may be a reason...

LOL hope not, mine are hidden behind the rear bumper, no blow back when driving

 

[iquitos46]

I don't know if convertibles are all the same but when I had my 67 ragtop I had to keep anything small or light weight put in the glovebox or covered by something heavy. If not it would get sucked out into the airstream. I sure miss that old beast.