Can someone discuss reasonable ways to increase the 120 SE engine power from its 180hp to the 210hp of the XK 140/150 or even beyond.

There seem to be a variety of notions regarding different head and carb combinations.

It would be useful to focus some first-hand experience on this issue.

Submitted by bgrossman@mywdo.com on Tue, 11/28/2006 - 11:48

Craig - you need to stop looking at the advertized HP of Jag motors. Here in CO, you would be hard pressed to get to 190 HP from an unmodified 3 carb E-Type on an engine dyno. Roadable motors are available from a number of sources ranging in HP up to about 320. Higher numbers are achievable but drivability goes down and cash outlay accelerates geometrically.

XK120 FHC
XK140 DHC
Mk2 competition
S1E - coupe
C-replica