Folks,

I'm looking to mod an AJ27 and need to play around with the compression ratio and bore.

Does anyone have the cylinder head, deck clearance and other volume-related figures to hand?

I know it's a square 86/86 bore and stroke - I'm planning to up this to around 93ish bore and perhaps reduce compression slightly to allow a modern screw-type SC to be installed, amongst other things for my first stage mods.

Thanks in advance.

 

This is the most I have.

http://www.jagrepair.com/images/Auto...Code%20168.pdf

You might try the engine and transmission forum on our site. There are members there that have done modifications on our engines. You might read some of the threads as they might have more info.

 

For what that's going to cost you could buy a newer XJR with 550 hp and go from there.