Irving 10 spark plugs (1 Viewer)

[kevin stevens]

I have a cylinder head from a Merlin engine and it has a number of Irving 10 spark plugs in it
The internet says this plug was used in land speed record cars with aircraft engines but not in ww2 aircraft can anyone help please

 

[Engineman]

Any chance of pictures of the head and the plugs please?

Eng

 

[kevin stevens]

This is half of one of the Vs got the other half. Only info I can find is that this spark plug was designed by Phil Irvine for 1929 land speed record car 'golden arrow'.

 

[Crimea_River]

Spotlessly clean casting but filthy springs and corroded bolts. Has someone cobbled this together for display I wonder?

Here are pics of an original plug from a Hurricane with Packard merlin 29:

 

[Engineman]

Hi Kevin,

That IRVING 10 is certainly not a usual spark plug in a Halifax that your piece of cylinderhead came from. The info about the IRVING 10 plug is thin on the ground, but it does seem there is some info that they were special plugs made for Irving by KLG for racing.
I can see that is a detachable plug but, in aviation use it would have the upper section extended to secure the screw-on plug cap.
I doubt that plug was in the head that suffered such major damage and corrosion.

Eng

 

[GrauGeist]

The spark plugs used on the Merlin/V-1650 during the war, would have been 14mm shielded plugs (like the one CR just posted).

 

[Crimea_River]

Hi,

Certainly not a usual spark plug in a Halifax.

I said Hurricane, not Halifax. Note Air Ministry Stamp so may not be original from our Packard Merlin, now I think of it. We also stocked these from Lodge:

I agree about the screw-on plug caps and here's how they look on our restored Packard 29:

 

[Engineman]

I said Hurricane, not Halifax. Note Air Ministry Stamp so may not be original from our Packard Merlin, now I think of it. We also stocked these from Lodge:

View attachment 902023

I agree about the screw-on plug caps and here's how they look on our restored Packard 29:

View attachment 902024

Yes, you did say Hurricane. I was replying to the OP, he has mentioned in another place online that he thought the crashed cylinderhead is from a Halifax, I had not seen your post until after I posted.

Cheers

Eng

 

[Crimea_River]

Ah, sorry!

 

[pb43]

This is half of one of the Vs got the other half. Only info I can find is that this spark plug was designed by Phil Irvine for 1929 land speed record car 'golden arrow'.

View attachment 901987
View attachment 901988

Definitely NOT used on aircraft engines