Exhaust Manifold Running Red

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules

Topic author
Rich Huggins
Posts: 107
Joined: Sat Oct 12, 2019 7:56 am
First Name: Rich
Last Name: Huggins
* REQUIRED* Type and Year of Model Ts owned: 1923 touring- 1922 deverley truck -1922 center door
Location: Maricopa AZ
MTFCA Number: 50661
Contact:

Exhaust Manifold Running Red

Post by Rich Huggins » Fri Apr 24, 2020 8:19 pm

Hi my exhaust manifold runs bright red while driving, i smelled something burning ! oh no my floor board is on fire. Luckily i had water, burnt half way through the 3 piece floor board covered it with a sheet metal heat shield. I did drive home with no floor boards ,dam that was hot on the feet is this normal

User avatar

Sunnybrook Farm
Posts: 14
Joined: Sat Jan 25, 2020 12:36 pm
First Name: Gill
Last Name: Pollard
* REQUIRED* Type and Year of Model Ts owned: 26 parts
Location: Franklin Co. Virginia
Contact:

Re: Exhaust Manifold Running Red

Post by Sunnybrook Farm » Fri Apr 24, 2020 8:23 pm

Where are you running your spark lever? Sounds like timing may be retarded some how.


HPetrino
Posts: 490
Joined: Sun Jan 06, 2019 11:14 am
First Name: Henry
Last Name: Petrino
* REQUIRED* Type and Year of Model Ts owned: 1918 TT
Location: Modesto, CA

Re: Exhaust Manifold Running Red

Post by HPetrino » Fri Apr 24, 2020 8:53 pm

The usual suspects are either the spark is too retarded or the carburetor mixture is too lean, or a little of both.


Topic author
Rich Huggins
Posts: 107
Joined: Sat Oct 12, 2019 7:56 am
First Name: Rich
Last Name: Huggins
* REQUIRED* Type and Year of Model Ts owned: 1923 touring- 1922 deverley truck -1922 center door
Location: Maricopa AZ
MTFCA Number: 50661
Contact:

Re: Exhaust Manifold Running Red

Post by Rich Huggins » Fri Apr 24, 2020 9:22 pm

At low idle 1/8 to 1/4 on the spark rod adjust carb rich to lean then back to good idle just sitting with the garage fan on at high speed, manifold Cherie red! Driving 3/4 to 1/2 on the throttle 1/2 to 3/4 on the spark, no intake or exhaust leak at 1/2 to 3/4 on the throttle, the carb whistles like it wants more air and fuel small 23 holley nh carb


Scott_Conger
Posts: 6431
Joined: Sun Jan 06, 2019 11:18 am
First Name: Scott
Last Name: Conger
* REQUIRED* Type and Year of Model Ts owned: '13, '15, '19, '23
Location: Clark, WY
Board Member Since: 2005

Re: Exhaust Manifold Running Red

Post by Scott_Conger » Fri Apr 24, 2020 10:19 pm

It really doesn't matter where you "run the spark lever" if the timing is completely wrong, and it sounds like it may be completely wrong. I have never heard a T carb whistle that didn't have some sort of vacuum leak in the intake system. You really need to check both out as your car will not last long being run as it is, without requiring significant and expensive repairs.
Scott Conger

Tyranny under the guise of law is still Tyranny

NH Full Flow Float Valves
Obsolete carburetor parts manufactured


Been Here Before
Posts: 625
Joined: Mon Oct 07, 2019 2:00 pm
First Name: George John
Last Name: Drobnock
* REQUIRED* Type and Year of Model Ts owned: 1922 Coupe
Location: Central Pennsylvania

Re: Exhaust Manifold Running Red

Post by Been Here Before » Sat Apr 25, 2020 9:47 am

Interesting that the question of coloured exhaust manifolds come up on occasion. May I suggest that a review of an training manual from WWII be reviewed. It may help with the manifold colours and the flames. (exhaust colour Allison V-1710)
Allison_Mixture.jpg

Post Reply Previous topicNext topic