Best Tailpipe Routing to Avoid Fumes in Car - TriFive.com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice

Click here to see our full list of sponsors for all your Parts and Restoration Needs

Click here to find Out all of the Latest information on the Danchuk Tri-five Nationals


Go Back   TriFive.com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice > 55-56-57 Chevy Forum > Headers and Exhaust System
User Name
Password
Register FAQ Top Posters Mobile Members Search Today's Posts Mark Forums Read
HomePage Todays Post Mark Forums Read upcoming Events
Newsletter 55-56-57 Chevy Parts & Services Official Sponsors
Photo Gallery Garage Photos Trifive Classifieds Trifive on Facebook Calendar Tech Articles Arcade Oldies
Trifive Cards Car Certificate Trifive Brochure Help with Photos Website Help Videos Contact Us

Headers and Exhaust System Discussion related to Exhaust systems and headers.
Sponsored by:
Pypes Performance Exhaust

Parts on Ebay            
Reply
 
Thread Tools Display Modes
Old 05-23-2019, 12:00 AM   #1
kbuhagiar
Senior Member 1 Silver Star

kbuhagiar has made a donation to the forum!

 
kbuhagiar's Avatar
 

Join Date: May 2006
Location: The Great State of CALIFORNIA
Posts: 913
Member #670
Default Best Tailpipe Routing to Avoid Fumes in Car

Hello Folks,

Today was nice and sunny so I drove the 56 with my window down. I noticed a fair amount of exhaust fumes, sometimes while moving but mostly while waiting at traffic lights. My 56 150 two-door sedan has headers, H-pipe, Flowmasters and 2 1/2" pipes all the way out the back and about 1" past the bumper.

If I have an exhaust leak it isn't readily apparent, as the damned Flows, which are on my list for replacement, are LOUD.

Is it possible that the fumes are being drawn all the way up from the back bumper to the driver's side window? Would it be better to have the tailpipes exit after the rear tires?

Thanks in advance.
__________________
Cheers!

Ken in SSF California - 56 One-Fifty Two-Door Sedan
kbuhagiar is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-23-2019, 08:35 AM   #2
57-Z06

Trifive Leaders Club


57-Z06 has made a donation to the forum!

 
57-Z06's Avatar
 

Join Date: Dec 2006
Location: Mountain View, Arkansas
Posts: 10,407
Member #1699
Default

It sounds as though you have the best exhaust routing with the pipes exiting at the rear bumper. Do you have a closed pcv system? Just wondering if while stopped at the traffic signals you may be getting some crankcase fumes inside the car? Or as you said, possibly an exhaust leak?
__________________
Ray
57-Z06 is offline   Reply With Quote
Old 05-23-2019, 02:30 PM   #3
kbuhagiar
Senior Member 1 Silver Star

kbuhagiar has made a donation to the forum!

 
kbuhagiar's Avatar
 

Join Date: May 2006
Location: The Great State of CALIFORNIA
Posts: 913
Member #670
Default

Quote:
Originally Posted by 57-Z06 View Post
It sounds as though you have the best exhaust routing with the pipes exiting at the rear bumper. Do you have a closed pcv system? Just wondering if while stopped at the traffic signals you may be getting some crankcase fumes inside the car? Or as you said, possibly an exhaust leak?
57,

That's pretty much what I thought regarding tailpipe placement, can't get much better than that. And I have a closed system, definitely not crankcase fumes.

I still need to do a visual inspection for leaks, especially where the collector bolts to the header. But, after further consideration, another possibility is the car is running a bit rich at idle, perhaps giving notice to what would otherwise be normal exhaust fumes. Can excessive ignition advance at idle contribute to this?
__________________
Cheers!

Ken in SSF California - 56 One-Fifty Two-Door Sedan

Last edited by kbuhagiar; 05-23-2019 at 06:01 PM..
kbuhagiar is online now   Reply With Quote
Old 05-23-2019, 02:39 PM   #4
teahead
Senior Member 1 Blue Star



 
teahead's Avatar
 

Join Date: Oct 2018
Location: seattle (BTW, I go by "Rob")
Posts: 308
Member #48198
Default

Got a picture of your tailpipe setup?

Can always pour some ATF down your carb to produce a lot of smoke to see if you have a leak.
__________________

1955 Nomad. About 90% done.
teahead is offline   Reply With Quote
Old 05-23-2019, 02:53 PM   #5
copymutt
Senior Member 1 Gold Star

copymutt has made a donation to the forum!

 
copymutt's Avatar
 

Join Date: Apr 2015
Location: Durango, Co
Posts: 1,776
Member #36997
Default

Mine exit just below the bumper, just under the frame rails. Never noticed any smell, till one day took friends to the airport with so much luggage I couldnít latch the trunk, tied it almost closed. It was the worst Iíve ever experienced in any vehicle. Maybe your trunk seal has lost its integrity.

Not related to exhaust, but I did replace the factory seal on the trunk lid w/ a specialty, on the body, better looking, better integrity seal.
image.jpg
Jim
__________________
Nothing is foolproof for a sufficiently talented fool.
copymutt is online now   Reply With Quote
Old 05-23-2019, 03:08 PM   #6
kbuhagiar
Senior Member 1 Silver Star

kbuhagiar has made a donation to the forum!

 
kbuhagiar's Avatar
 

Join Date: May 2006
Location: The Great State of CALIFORNIA
Posts: 913
Member #670
Default

Quote:
Originally Posted by copymutt View Post
Mine exit just below the bumper, just under the frame rails. Never noticed any smell, till one day took friends to the airport with so much luggage I couldn’t latch the trunk, tied it almost closed. It was the worst I’ve ever experienced in any vehicle. Maybe your trunk seal has lost its integrity.
Trunk weatherstrip is new and in excellent condition. Note that the picture below was taken when I purchased the car, before trunk seal replacement and trunk lid alignment.

Quote:
Originally Posted by teahead View Post
Got a picture of your tailpipe setup?
No pictures of the underside, but here are the tailpipes:
Attached Images
File Type: jpg 20180327_161041.jpg (664.3 KB, 3 views)
__________________
Cheers!

Ken in SSF California - 56 One-Fifty Two-Door Sedan

Last edited by kbuhagiar; 05-23-2019 at 03:12 PM..
kbuhagiar is online now   Reply With Quote
Old 05-23-2019, 03:46 PM   #7
copymutt
Senior Member 1 Gold Star

copymutt has made a donation to the forum!

 
copymutt's Avatar
 

Join Date: Apr 2015
Location: Durango, Co
Posts: 1,776
Member #36997
Default

I used to commute 50 miles a couple days a week in a Subaru Outback.
Every return trip would put me quartering to the prevailing wind. Think heading north w/ an onshore breeze from the SW. There was nothing wrong w/ the vehicles exhaust, but I could strongly smell it on those return trips if I put my window down. Not so much of an issue that I ever tried to reroute the exhaust.
Jim
__________________
Nothing is foolproof for a sufficiently talented fool.
copymutt is online now   Reply With Quote
Old 05-23-2019, 03:51 PM   #8
teahead
Senior Member 1 Blue Star



 
teahead's Avatar
 

Join Date: Oct 2018
Location: seattle (BTW, I go by "Rob")
Posts: 308
Member #48198
Default

I'm thinking you have a leak somewhere.
__________________

1955 Nomad. About 90% done.
teahead is offline   Reply With Quote
Old 05-23-2019, 05:11 PM   #9
557B210
Administrator & Tech Articles

557B210 has made a donation to the forum!

 
557B210's Avatar
 

Join Date: May 2008
Location: Orange Park, FL
Posts: 45,052
Member #5571
Default

Quote:
Originally Posted by teahead View Post
Can always pour some ATF down your carb to produce a lot of smoke to see if you have a leak.
Might not be a bad idea.
__________________
______________________

* See my painfully slow and overly detailed build thread here: https://www.trifive.com/forums/showthread.php?t=79427

* I have a vast data base of TriFive restoration & upgrade articles for our members' use...Send me a PM with your EMAIL ADDRESS and subject matter...See this link:
https://www.trifive.com/forums/showthread.php?t=175309


* Contact me by PM to purchase your PHR's Project X and TriFive Gasser Building CD's

_________________david aka POPS & sherry
557B210 is online now   Reply With Quote
Old 05-23-2019, 07:14 PM   #10
Roscoe7
Senior Member 1 Silver Star



 
Roscoe7's Avatar
 

Join Date: Jan 2009
Location: Sunshine Coast, Queensland
Posts: 635
Member #7496
Default

Quote:
Originally Posted by copymutt View Post
I used to commute 50 miles a couple days a week in a Subaru Outback.
Every return trip would put me quartering to the prevailing wind. Think heading north w/ an onshore breeze from the SW. There was nothing wrong w/ the vehicles exhaust, but I could strongly smell it on those return trips if I put my window down. Not so much of an issue that I ever tried to reroute the exhaust.
Jim
I was thinking maybe 'tail wind'. As a suggestion; next time you smell it, turn around and drive in the opposite direction and see if you can still smell it.
Roscoe7 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best LS? Any to avoid? RB9 LS Installation Questions and Answers 14 10-11-2016 09:33 PM
Tailpipe Routing lovemy55ba Stock Chevy Discussion 55-56-57 3 06-04-2015 10:18 AM
13 Things That Mentally Tough People Avoid auggie56 Chit Chat Area, Anything on your mind goes here. 4 12-17-2013 11:18 AM
Navy to scrap $277 million ship to avoid scraping reef max46 Chit Chat Area, Anything on your mind goes here. 9 01-31-2013 12:49 AM
Exhaust Fumes In Car GKK Super Stock / Pro Street and Modified Discussion 55-56-57 9 04-20-2011 09:03 PM


All times are GMT -4. The time now is 07:21 PM.

Click here to see our full list of sponsors for all your Parts and Restoration Needs

Websites
www.tri-5.com www.tri-fives.com www.trifive.com

Powered by vBulletin
Copyright © 2000-2009 Jelsoft Enterprises Limited.
1957 CHEVROLET BEL AIR Information, 1957 CHEVROLET BEL AIR Specifications, 1957 CHEVROLET BEL AIR Resources, 1957 CHEVROLET BEL AIR Pictures, 1957 CHEVROLET 55 chevy 56 chevy 57 chevy 1955 55 chevy pictures 55 chevy parts 55 chevy truck 55 chevy pickup 55 chevy nomad 55 chevy gasser 55 chevy pro street 56 chevy pictures 56 chevy parts 56 chevy truck 56 chevy pickup 56 chevy nomad 56 chevy gasser 56 chevy pro street 57 chevy pictures 57 chevy parts 57 chevy truck 57 chevy pickup 57 chevy nomad 57 chevy gasser 57 chevy pro street 55 chevy photos 55 chevy parts 55 chevy truck 55 chevy pickup 55 chevy nomad 55 chevy gasser 55 chevy pro street 56 chevy photos 56 chevy parts 56 chevy truck 56 chevy pickup 56 chevy nomad 56 chevy gasser 56 chevy pro street 57 chevy photos 57 chevy parts 57 chevy truck 57 chevy pickup 57 chevy nomad 57 chevy gasser 57 chevy pro street 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad belair Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five belair Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 belair chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy belair 57 chevy 1955 Chevy belair 1956 Chevybelair 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy belair 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five belair Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy belair 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy belair 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five 55chevy 55 chevy pictures 55 chevy parts 55 chevy truck 55 chevy pickup 57 chevy 55 chevy nomad 55 chevy gasser 55 chevy pro street Searches related to 57chevy 57 chevy pictures 57 chevy 57 chevy truck 57 chevy parts 57 chevy pickup 57 chevy nomad 1957 chevy Tri5