Early Manifold Clamps

[Rodger Erickson]

I was once told that early (brass era) manifold clamps had flat spots on the contact points (top) unlike the "later" ones (bottom) where the contact points are circular. Is this correct or is this just a variation from different suppliers?

[TRDxB2]

I was once told that early (brass era) manifold clamps had flat spots on the contact points (top) unlike the "later" ones (bottom) where the contact points are circular. Is this correct or is this just a variation from different suppliers?

tmclp01.jpg

What part numbers do they have on them?

Old discussion about the same question https://www.mtfca.com/phpBB3/viewtopic.php?f=2&t=27566

[Rodger Erickson]

The top one has no markings, the bottom one is marked "T516." These are going on a brass car so the "improved" T516B's discussed in the previous thread would be out-of-place.

[Allan]

There is a number of variations in the earlier style clamps. Some have part numbers, some have Ford scripts, some have both part number and script, some have makers forge marks, some are absolutely unmarked. It can be a challenge to find four the same, if that rows your boat. I'm sure the car builders just took whatever was to hand when assembling the cars.

Allan from down under.

[TRDxB2]

The correct part number for the exhaust (manifold) pipe clamp is T515, T516 is for the exhaust (manifold) clamp stud. No doubt multiple suppliers causing variations

[DanTreace]

The top one has no markings, the bottom one is marked "T516." These are going on a brass car so the "improved" T516B's discussed in the previous thread would be out-of-place.

Roger

The top one in your photo is the very earlier clamp, will be ok to use either on your 1915, and your exhaust manifold for 1913-1916 should have casting number T4483.

Described early manifold clamps by Gail Rodda book for 1909 details, note the later clamps with round pads and thinner metal around the stud hole. The arrow points to real later T515 as this one has Ford script, added about 1919.