What are the differences between a jaguar 420 engine and etype engine

[smokey_m14]

Are e type 4.2 engines interchangeable with 420 engines? Whats the same and whats different

[Heuer]

This thread may help:
http://forum.etypeuk.com/viewtopic.php?p=110211#p110211

[smokey_m14]

Thank you so much! that answered all my questions. I have a deal I can't pass up on this 1967 engine, runs with 67,000 original miles. I'm guessing it came out of a 420 but being as my E has pitted cams and probably a pitted crank this will get us flying sooner than later.

[abowie]

Good choice. I have one of those tucked away as a spare. And yours should be a short stud block which is preferable. Check its engine number here http://www.jag-lovers.org/xk-lovers/lib ... umbers.htm

[chrisfell]

My E has a 1967 420 sourced engine. Originally this was a 8:1, but it now sports 9:1 pistons. The car has had this engine for most of its life, probably since 1978, certainly since 1986.

[smokey_m14]

Good choice. I have one of those tucked away as a spare. And yours should be a short stud block which is preferable. Check its engine number here http://www.jag-lovers.org/xk-lovers/lib ... umbers.htm

Wow, according to that link I may have done better than I thought. This appears to be a Series 1-1.5 E-type engine. Came with an automatic gearbox

[Heuer]

Looks like a 7F to me meaning it came from a 420.

[smokey_m14]

Looks like a 7F to me meaning it came from a 420.

Thanks for the image enhancement! my eyes must be getting terrible Now we know definitively! I'm always greatful for your help and insight

[chrisfell]

Mine is 7A, a Daimler badged 420.