Help with cracked exhaust manifold

Hi, I have B reg Defender 2.25 and the exhaust manifold broke into 3 pieces about 3 yrs ago. Replaced and it has cracked again. Part number ERC9071 looks like the part, but not sure if that is the right part or not. Have been asked if it is conical or parallel ported but not sure. Any advice appreciated either on why it may have failed or on exactly which part is best to order. Thanks

Do you have any pictures of your current one? Some have 2 horns (1 either side of the turbo)

The white stuff was an exhaust bandage I put on to get home. Didn’t help though

You say you have a 2.25… you sure ?
They fitted 2.5 to the early 90
What carb you got is it a twin Weber

(What area are you? )

The very early coil spring trucks A and some B reg still had the 2.25 engine.
Likely manifold is the same as 5 bearing series 3 engine.

Did up load some pics. There is no turbo on the motor. Just carbs

Hicap phill said:

You say you have a 2.25… you sure ?
They fitted 2.5 to the early 90
What carb you got is it a twin Weber

(What area are you? )

Click to expand...

Yep it is 2.25 registered as such. It has a single carb.
Milton Keynes area

tottot said:

The very early coil spring trucks A and some B reg still had the 2.25 engine.
Likely manifold is the same as 5 bearing series 3 engine.

Click to expand...

Thanks, would you happen to know a part number is ERC9071?

Afraid not, but think the same manifold fits 2.25 and 2.5 petrol engines. Check with seller for details.

Roy.67 said:

Yep it is 2.25 registered as such. It has a single carb.
Milton Keynes area

Click to expand...

Will look in the shed to see if there are any part numbers on a manifold spare

Does anyone know why these manifolds crack where this one has, and if it's a common issue that can be avoided?

I bought a Weber carb on a manifold some years back. The manifold had cracked just like yours. It was meant to be from a 2.5 4-cylinder petrol but when I did some investigating, it was from a 2.25.