The Ford Barn

Bob from Northport · 07-31-2020, 03:25 PM

Working on a customers 28' Roadster Pick up. When we reinstalled the muffler/tail pipe to the exhaust manifold, I noticed the section of the stainless pipe was very deep to bright blue from the manifold to the muffler section.
Is the owner running it too lean causing the pipe to heat badly???

Y-Blockhead · 07-31-2020, 04:02 PM

Or the timing is real late.

Gary WA · 07-31-2020, 08:13 PM

Quote:

Originally Posted by Y-Blockhead

Or the timing is real late.

That one is hot!!

Purdy Swoft · 08-01-2020, 09:56 AM

I agree that the timing is probably a bit retarded . When the timing pin meets the dimple in the cam gear I adjust the distributor cam so that the TRAILING end of the rotor tip points exactly at the number one contact in the distributor cap body with NO clockwise backlash . Points gap also has an effect on timing because the spark happens just as the points begin to open . More gap will cause the points to open quicker . Factory specs for points gap is anywhere from eighteen to twenty two thousands . I set my points anywhere from twenty to twenty two thousands . The wider gap gives better throttle response . The smaller gap of eighteen thousands is right on the edge of being retarded and will soon need readjustment . If the timing is slightly retarded it will cause the engine to run hotter and have less power . The more retarded the hotter the exhaust system will get untill it gets red hot , not a good situation !!!

Purdy Swoft · 08-01-2020, 10:16 AM

On the other hand , lean operation will also cause overheating . Factory specs for GAV adjustment is one quarter turn open on the GAV knob after a brief warm up on a cold engine . If the larger model B carburetor is used the GAV should run completely closed after warm up . Both timing and GAV adjustment have an effect on running temps .

Jack Shaft · 08-01-2020, 10:24 AM

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plugged muffler

Jack Shaft · 08-01-2020, 10:25 AM

Quote:

Originally Posted by Y-Blockhead

Or the timing is real late.

he's good,he has a heat shield..

Benson · 08-01-2020, 10:30 AM

What is the paint code for that color of paint?

Big hammer · 08-01-2020, 11:51 AM

Smoking hot cherry red !

warhorseracing · 08-01-2020, 09:22 PM

That kind of heat will definitely warp the manifold.

07-31-2020, 03:25 PM	#1
Bob from Northport Senior Member Join Date: May 2010 Location: 215 E. 6th Street Northport, Michigan 49670 Posts: 587	Exhaust pipe question/opinion Working on a customers 28' Roadster Pick up. When we reinstalled the muffler/tail pipe to the exhaust manifold, I noticed the section of the stainless pipe was very deep to bright blue from the manifold to the muffler section. Is the owner running it too lean causing the pipe to heat badly??? __________________ Bob from Northport Northport, Michigan

07-31-2020, 04:02 PM	#2
Y-Blockhead Senior Member Join Date: Jul 2011 Location: Redondo Beach, CA Posts: 4,380	Re: Exhaust pipe question/opinion Or the timing is real late. __________________ Y-Blockhead '30 Briggs Town Sedan '55 Ford Ranchwagon _________________________________ And once again that is just my 1� worth. https://www.youtube.com/watch?v=51ufACHJMfU

08-01-2020, 09:56 AM	#4
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,092	Re: Exhaust pipe question/opinion I agree that the timing is probably a bit retarded . When the timing pin meets the dimple in the cam gear I adjust the distributor cam so that the TRAILING end of the rotor tip points exactly at the number one contact in the distributor cap body with NO clockwise backlash . Points gap also has an effect on timing because the spark happens just as the points begin to open . More gap will cause the points to open quicker . Factory specs for points gap is anywhere from eighteen to twenty two thousands . I set my points anywhere from twenty to twenty two thousands . The wider gap gives better throttle response . The smaller gap of eighteen thousands is right on the edge of being retarded and will soon need readjustment . If the timing is slightly retarded it will cause the engine to run hotter and have less power . The more retarded the hotter the exhaust system will get untill it gets red hot , not a good situation !!!

08-01-2020, 10:16 AM	#5
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,092	Re: Exhaust pipe question/opinion On the other hand , lean operation will also cause overheating . Factory specs for GAV adjustment is one quarter turn open on the GAV knob after a brief warm up on a cold engine . If the larger model B carburetor is used the GAV should run completely closed after warm up . Both timing and GAV adjustment have an effect on running temps .

08-01-2020, 10:24 AM	#6
Jack Shaft Senior Member Join Date: Dec 2019 Posts: 943	Re: Exhaust pipe question/opinion Sponsored Links (Register now to hide all advertisements) plugged muffler

08-01-2020, 10:30 AM	#8
Benson Senior Member Join Date: May 2010 Posts: 2,124	Re: Exhaust pipe question/opinion What is the paint code for that color of paint?

08-01-2020, 11:51 AM	#9
Big hammer Senior Member Join Date: Jun 2014 Location: Land of Lincoln Posts: 2,197	Re: Exhaust pipe question/opinion Smoking hot cherry red ! __________________ Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done

08-01-2020, 09:22 PM	#10
warhorseracing Member Join Date: Jul 2020 Location: Cameron WV Posts: 59	Re: Exhaust pipe question/opinion That kind of heat will definitely warp the manifold.

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