Who can help me identify this engine, it was recovered from the north sea.

[Bas]

Who can help me to identify this engine recovered from the north sea. And indicate of which planes it was installed. Thank you in advance

 

[herman1rg]

Any ID plate or numbers on it?

 

[MIflyer]

Well, it is a nine cylinder radial engine. The really odd thing about it is the the cylinder heads are all missing; you can see here they screwed on. I guess the heads could have corroded away, since they were most likely aluminum. The dome over the front of the engine is missing as well.

Measure the inside diameter of the cylinders and that would give a good guess at its displacement. The arrangement of the cylinder base mounting bolts will also be of value in determining the engine model, but I do not recognize it; it does look a bit like an R-1820, used on both the B-17 and early models of the Lockheed Hudson.

 

[Bas]

Well, it is a nine cylinder radial engine. The really odd thing about it is the the cylinder heads are all missing; you can see here they screwed on. I guess the heads could have corroded away, since they were most likely aluminum. The dome over the front of the engine is missing as well.

Measure the inside diameter of the cylinders and that would give a good guess at its displacement. The arrangement of the cylinder base mounting bolts will also be of value in determining the engine model, but I do not recognize it; it does look a bit like an R-1820, used on both the B-17 and early models of the Lockheed Hudson.

Thank you for the response, the engine does not have any tags on it anymore. The piston head is made of aluminum. And are corroded away. 1 fell out and I will measure the diameter to get an indication.

P. S. It was a three bladed propeller

 

[mjfur]

Perhaps a version of the Wright 1820 from a DC-2?

Head bolts grouped together in fours. https://upload.wikimedia.org/wikipedia/commons/9/9a/Wright_R-1820_G.jpg
Wright R-1820 Cyclone - Wikipedia (Aircraft type used in at bottom, some by RAF, P-36, Hudson, etc..)

DC-2 prop with counterweights. https://storage.googleapis.com/mcp_acc_236blog/uploads/2015/02/DC2-Haan.jpg
Counterweights on a three blade prop is very 1930's ish.

This SBD-2P has the same type prop with counterweights and 1820 with four bolt pattern.

Air Zoo to Celebrate Completion of SBD-2P Dauntless Restoration

Back in June, we reported that the Air Zoo Aerospace and Science Museum in Kalamazoo, Michigan was working hard to complete the static

laptrinhx.com

https://www.mlive.com/resizer/mu12bkFkdJyv1L568la1_4BkVyA=/800x0/smart/arc-anglerfish-arc2-prod-advancelocal.s3.amazonaws.com/public/ZZXB76WJZRA3HNFF5DDPKIDPZI.JPG

 

[MIflyer]

Some DC-3's were equipped with R-1820 as were the Brewster F2A-1's used by the Finns.

 

[bse7entn]

The propeller hub is not the quick feathering type used on a B-17. I think that airframe can be ruled out at least.

 

[Bas]

The propeller hub is not the quick feathering type used on a B-17. I think that airframe can be ruled out at least.

The propeller hub is not the quick feathering type used on a B-17. I think that airframe can be ruled out at least.

Thank you all for the replies, it is really nice to see all the responses from you.

Some new information. The piston head is roughly 6 inch in diameter.

 

[Michael Hope]

The propeller looks like a Hamilton Standard model 3E50 with Right Hand rotation, or a license-built copy. It also has a front bulkhead for a front spinner cover for the propeller.
The F2A did have a front spinner that looks similar to this. You can search the "F2A" in this forum to see the images.

 

[buffnut453]

I'm unaware of any RAF Buffalos that crashed in the North Sea. Also, Finnish Brewsters didn't operate anywhere near the North Sea. I think we're looking at a different aircraft type.

 

[Big Jake]

The case does not look like a R1820 one nor are the fins on the cylinders. I'd guess it is a British or German engine. See if you can remove a bolt and check the thread - mm or inch.

 

[mjfur]

The case does not look like a R1820 one nor are the fins on the cylinders. I'd guess it is a British or German engine. See if you can remove a bolt and check the thread - mm or inch.

Except that it's an exact match for an 1820 series.

 

[MIflyer]

An R-1820 has a bore of 6.1 inches and a stroke of 6.9 inches.

 

[EwenS]

I note the OP gave the cylinder head size as "roughly" 6" in diameter.

Bristol Pegasus 9 cylinder radial had a cylinder bore of 5.75 inches. A lot of Hampdens and Wellingtons not to mention the odd Swordfish & Walrus went down in the North Sea.

 

[Bas]

I meant with roughly 2 mm deviation. On the piston head are still the metal rings

 

[buffnut453]

I note the OP gave the cylinder head size as "roughly" 6" in diameter.

Bristol Pegasus 9 cylinder radial had a cylinder bore of 5.75 inches. A lot of Hampdens and Wellingtons not to mention the odd Swordfish & Walrus went down in the North Sea.

And the Wellybag had a spinner. We can discount the Swordfish and the Walrus as the propellers on those types don't match the photos of the recovered engine.

 

[mjfur]

I note the OP gave the cylinder head size as "roughly" 6" in diameter.

Bristol Pegasus 9 cylinder radial had a cylinder bore of 5.75 inches. A lot of Hampdens and Wellingtons not to mention the odd Swordfish & Walrus went down in the North Sea.

The Pegasus uses a 3 bolt pattern for cylinder attachment not the 4 bolts as seen in the OP photo. The case thru bolts are different as well.

https://warbirdsnews.com/wp-content/uploads/Restoration-of-one-of-P1344s-965hp-Bristol-Pegasus-XVIII-radial-engines-has-been-completed-small.jpg

 

[SaparotRob]

That removes a few aircraft that it could be from. What suspects might be left?

 

[Bas]

If you had to make a pick, what plane do you think?

 

[AMCKen]

My first thought was a sleeve valve Bristol.