exhaust blow back

[raoul reese]

My cruiser exhaust goes out the back of the vehicle. The twin pipes point staright back. Unfortunately, the exhaust tends to suck back into the cab....causing crying time. My soft top helps, I can not use the bikini top. Has anybody suffered similarly and found a solution ... pipes pointing down, routed to the sides, other???? Right now I do not think I could run the cruiser in the winter it would asphixiate me if I closed the windows.

 

[Mace]

Point the tailpipes out the side..

Straight out back causes a vortex and makes you inhale fumes..

 

[Bailey]

out the side, behind the right rear wheel for me.

 

[raoul reese]

exhaust mod

Is it possible to modify an existing installation, cut it and weld in a curved section to reroute the pipe or should I replace? the exhaust is fairly new.

 

[Mace]

modify it..

 

[78crzr]

I'm not certain that re-routing it to the side will fix the problem completely. Mine exits behind the drivers rear wheel, and I still get a fair amount of it coming in when I have the bikini top on, and some with it off for that matter. I just had Jim C rebuild the carb which helped reduce the stench some, but I'm thinking it's rebuild time for me before too long. Wife still wants nothing to do with me after I come back from being out for a drive as she says I smell like exhaust. Good luck with it.....

 

[CruisinGA]

78crzr-you probably have a leak in the engine bay, possibly the donut gasket on the manifold, i used to have exhaust routed out the side behind the DS rear wheel like factory, and never had a problem.

 

[78crzr]

CruisinGA,

Thanks for the suggestion. I'm running a MAF 6-1 header and the PO told me that he used 2 gaskets instead of one to keep it sealed, but that was over 2 years ago and 10,000 miles. I'm not hearing a leak, or would you be able to at all? Maybe I need to have the header pipe welded to the exhasut pipe as they are only bolted together now with a gasket. I do have 1 hole in the firewall where the heater tubes were, and maybe some gases are coming in there. Haven't had much use for the heater in 95F temps most of the year.

 

[MaddMatt]

78 Crzr,
In my limited experience, if you had a leak anywhere around the manifold, you would probably hear it. I had a truck with the 22RE that suffered repeated leaks where the manifold met the exhaust tube, and whenever that seal would let go (even after it was welded) the sound was immediately obvious. Much smaller engine with much more seperation between driver and engine, and you could still hear it over anything else.

I hope this thread stays active, I have the same problem in my 76. Exhaust exits behind the driver side rear wheel, and 15 minutes of driving can give me a headache. Relatively new Manafre header, exhaust system appears solid until the muffler. I'll be replacing the muffler shortly, but it's obvious from this thread that the muffler may not be enough.

Good Luck.
-Matt

 

[raoul reese]

exhaust behind wheels

Those of you who have routed the exhaust behind the wheels have had mixed success. Could the difference be attributable to the pipe also being routed toward the ground rather than horizontal?

 

[Paul_A]

My exhausts come out on each side behind the rear wheel with just a little downward turn and I don't have a problem at all--maybe the angle is part of the equation? If it were coming out too far downward would that be a similar circumsance to the exhaust coming straight out the rear (i.e. the vortex thing...)

 

[raoul reese]

Is there a difference dependent on engine type? Do those of you having no trouble have smog equipped vehicles; ie catalytic converters etc?

 

[78crzr]

I'm completely de-smogged and running just straight exhaust with an OEM Toyota muffler. I'm sure that doesn't help the cause.

 

[Ponce]

My pipes are pointed out right in front of my rear tires. I did it this way to make room for my aux fuel tank. I just completed my SBC using center dump manifolds. No exhaust problems running down the road. When I'm stoped at a light with the windows down I can smell it a little.

 

[MaddMatt]

My 76 is completely desmogged, and the pipe points straight out (no down turn) behind the drivers side rear wheel. All of that may be contributing. Maybe I should just buy a top and some doors ; )

 

[raoul reese]

exhaust

Has anybody solved this?????????????

 

[raoul reese]

exhaust

Has anybody installed any device to create high pressure above the exhaust

 

[sand rider]

Paul, i have mine routed the same exact way, with a bit of a downwords turn at the ends, and i dont get any smell

 

[offcamber40]

Before I put a MAF exhaust on mine, it exited at the PO's piece o crap muffler underneath and I the vapors were pulled under the bad rear amby seals into the cab. Since I put on the new exhaust and exit it to the driver side rear wheel, I have had no problems, even with no top on at all this summer. I think the side exit greatly reduces the problem. Good luck.

Mike

 

[warpdriv]

Mine is out the back driver's side but is turned down a bit starting about 8" back. I never got any fumes.

HTH,