yes its in tune..
sidepipe fumes
Thread Starter
Advanced
Joined: Jun 2010
Posts: 82
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sidepipe fumes
I have a 79 vette with sidepipes and the exhaust fumes are entering the car when driving and when I sit at stop lights ,the carb is running rich (edelbrock 750) swapped over to a holley 600 ,any suggestions ,
Burning Brakes
Joined: Oct 2007
Posts: 1,086
Likes: 22
From: Crystal Lake IL
St. Jude Donor '12-'13
Suggestions? Take your pick and choose 1.
a. close the windows
b. don't sit at stop lights
c. wear a mask
d. rebuild carb
e. replace exhaust
f. watch out for the environmentalists
a. close the windows
b. don't sit at stop lights
c. wear a mask
d. rebuild carb
e. replace exhaust
f. watch out for the environmentalists
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Narrow this down- is it a raw gas smell or a rich exhaust smell? Smell like a gas pump or make your eyes burn?
Ol' Red has worn sidepipes since it was built (Nov 68, came from the factory, and got switch to header/sidepipes in '71). The only real problem is when the power valve in the carb let go- it'd make your eyes burn.
Ol' Red has worn sidepipes since it was built (Nov 68, came from the factory, and got switch to header/sidepipes in '71). The only real problem is when the power valve in the carb let go- it'd make your eyes burn.
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Burning Brakes
Joined: May 2003
Posts: 910
Likes: 20
From: Shorewood IL
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
Pro
Joined: Jun 2006
Posts: 575
Likes: 3
From: Tampa / Ft. Myers FL
Rebuilding the carb will not affect whether exhaust will get into the cabin or not; two separate issues. Exhaust would be getting in even if you had F/I. I am switching to side exhaust on my 69 and will prob be running with the tops off and the back window out most of the time and was wondering the same thing about fumes. 
Before i pulled the body i used to come home smelling like exhaust and the old lady hated it.
To the O/P, check for openings in the firewall, the rubber plugs that fell out, holes drilled etc. I had several. Also check for leaks at all the pipe connection points. There was a wind tunnel video a while back, i bet if they ran the smoke out of the exhaust that too would have been interesting...
Before i pulled the body i used to come home smelling like exhaust and the old lady hated it. To the O/P, check for openings in the firewall, the rubber plugs that fell out, holes drilled etc. I had several. Also check for leaks at all the pipe connection points. There was a wind tunnel video a while back, i bet if they ran the smoke out of the exhaust that too would have been interesting...
Racer
Joined: Aug 2010
Posts: 263
Likes: 0
From: bethpage NY
Drifting
Joined: Sep 2004
Posts: 1,625
Likes: 4
From: Miami FL
on my vette...never have noticed a problem
on my buddy's 68 Mustang Fastback...Hell Yes!!! I about tossed my cookies one time we were in stop & go traffic and all the fumes built up in his tailgate area getting into the cabin through the rear hatch.
on my buddy's 68 Mustang Fastback...Hell Yes!!! I about tossed my cookies one time we were in stop & go traffic and all the fumes built up in his tailgate area getting into the cabin through the rear hatch.
Pro
Joined: Jun 2006
Posts: 575
Likes: 3
From: Tampa / Ft. Myers FL
Not to hijack the thread; 
this is the setup I bought to put on but...
I'm thinking real hard about b71vette's setup described in this thread:
http://forums.corvetteforum.com/c3-t...ide-pipes.html
and trying to figure out where I can run a crossover tube, and if it's really necessary.
.
this is the setup I bought to put on but... I'm thinking real hard about b71vette's setup described in this thread:
http://forums.corvetteforum.com/c3-t...ide-pipes.html
and trying to figure out where I can run a crossover tube, and if it's really necessary.
.
Melting Slicks
Joined: May 2006
Posts: 2,590
Likes: 403
From: Nashville TN
St. Jude Donor '09
I've got Hookers with the STS baffles and have a very strong odor. I'm pretty sure I have a lean condition and some carb issues. I've read that lean conditions can cause the odor too. Timing is ideal and I've adjusted the air screws for max vacuum. My next plan is to rebuild my quadrajet which I KNOW has issues and needs larger jets.
