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Old 07-13-2015, 07:17 PM   #1
MIKEV3550
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Default 1950 F1 Exhaust Question

Starting to restore a 1950 F1 and when I went to install the the crossover pipes (new production) where they come together they are flush with the oil pan where the clamp fits on. I actually cannot tighten to the manifolds because pipes are pushing on the oil pan. I am using the original engine. I think there should be at least a half inch clearance. Has anyone come across this problem.
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Old 07-13-2015, 07:25 PM   #2
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Default Re: 1950 F1 Exhaust Question

Yes heat it and pull it down. I did a 49 and 53 the same way.
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Old 07-13-2015, 07:45 PM   #3
Ross F-1
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Default Re: 1950 F1 Exhaust Question

Mine was at least 3 - 4 inches clear of the pan, could these be Car crossovers? I have no way of knowing if mine was OEM.
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Old 07-13-2015, 08:36 PM   #4
MIKEV3550
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Default Re: 1950 F1 Exhaust Question

The part numbers that are on the pipes are '7RC-5246 and ???-5267. Could these be CAR crossover.. not sure if these numbers mean anything. ??? are because I can't make out the numbers.

It seems if I heat and bend down the pipes I will not be able to go together because they will be at an angle ?
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Old 07-13-2015, 08:42 PM   #5
gearhead1952
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Default Re: 1950 F1 Exhaust Question

I have found they are not always made right. I had a passenger side pipe that was made wrong. The pipe coming from the manifold fits into the main pipe that runs to the rear. This pipe was inserted to far which basically blocked off all flow. It also raised the right side up so that the crossover under the pan hit the pan. Might be something similar going on with yours.
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Old 07-13-2015, 09:07 PM   #6
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Default Re: 1950 F1 Exhaust Question

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That's the correct # for a truck piece. Suspect it is as Gearhead says. May be worth having a muffler shop rework it. I could pull the pan with the exhaust in place.
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Old 07-13-2015, 09:55 PM   #7
Flathead
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Default Re: 1950 F1 Exhaust Question

Do you have the correct exhaust manifolds?
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Old 07-14-2015, 07:48 AM   #8
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Default Re: 1950 F1 Exhaust Question

I remember mine was about 1 1/2 inches away from the pan. Seemed like just enough to warm the oil when cold, but not set the truck on fire.
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Old 07-14-2015, 08:27 AM   #9
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Default Re: 1950 F1 Exhaust Question

Mine is a aftermarket pipe I got off a truck being hot-rodded, and it clears the pan by about an inch . I have removed good pipes off several parts trucks and they both were against the pan. It has to be the way they're bent when made. More repo parts not being checked. Like said above, go to a muffler shop and they can help fix the problem.
I have several aftermarket tailpipes made years ago that I can sell. Shipping may be a problem. PM if interested.
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Old 07-14-2015, 11:17 AM   #10
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Default Re: 1950 F1 Exhaust Question

If FoMoCo used a heat riser valve as OEM then there might be a clearance problem due to the missing component. I know the Mercs used riser valves but I don't remember about the F1s.
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Old 07-14-2015, 11:44 AM   #11
Ken Crans
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Default Re: 1950 F1 Exhaust Question

Stock is about 2 inches away from pan..Where did you get the pipe from?
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Old 07-14-2015, 04:21 PM   #12
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Default Re: 1950 F1 Exhaust Question

No heat risers on F-1's.
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Old 07-14-2015, 07:08 PM   #13
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Default Re: 1950 F1 Exhaust Question

I had exactly the same problem with cross-over pipes from Obsolete Ford Parts in Oklahoma city. My solution was having aluminum spacers made to bolt to the exhaust manifolds which gave me about an inch clearance, but I still wrapped insulating cloth around the crossover pipes in the vicinity of oil pan.
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Old 07-14-2015, 07:24 PM   #14
MIKEV3550
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Default Re: 1950 F1 Exhaust Question

Ken, I got the pipes from 'Hot Rods Classic Truck Parts' There was paper rappings on the ends which I took off but if I remember, label on the paper said 'Vintage ????' Dual exhausts would fix my problem but I don't want to go that way because I want to keep original. Looks like my only option is to find a muffler shop and do some bending.

I do have the correct manifolds...
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Old 07-14-2015, 07:28 PM   #15
MIKEV3550
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Default Re: 1950 F1 Exhaust Question

Bergie, your aluminum spacer fix may be the way to go... Did they seal tight against the manifold.. no leaks ? How thick were your spacers ?
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Old 07-14-2015, 09:55 PM   #16
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Default Re: 1950 F1 Exhaust Question

I believe the spacers were cut out of 5/8 inch aluminum plate. I supplied them with a gasket as a pattern. I used gaskets on both sides of the spacers. I did need to replace the stock studs in the manifolds with slightly longer ones. Good luck.
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Old 07-28-2018, 07:24 PM   #17
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Default Re: 1950 F1 Exhaust Question

Seems I have similar problem in just completed rebuild. Any new info or recommendations? I am inclined to take the pipes to a muffler shop and have the problem fixed fully unless I can get some shims between manifold and pipes.

Here is the issue: 1949 ford flathead V8 F5 truck. Muffler crossover under engine touches bottom of oil pan. How to resolve? Shims and additional gaskets between manifolds and muffler to lower the crossover? Or shall I take muffler apparatus to muffler shop to have it re-configured? Seems like shims will not create the recommended 1.5 to 2 inch clearance recommended by some of posters in this thread.

af
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