So this may be better suited in the racing forum here, but since it’s XJS specific I thought I would ask here first.
So I’ve raced in the 24 Hours of Lemons for many years, built 3 race cars all cheap Japanese cars. It’s a endurance road race where the cars “cost $500.” But I’ve recently become obsessed with building a V12 Jag.
Collective wisdom over on the Lemons forums is the Jag V12 is a terrible idea, which they of course encouraged it. The only team that has run the 5.3, at least that I can find, has serious problems with keeping head gaskets together. From all the searching and reading I’ve done, my working theory is that this is probably due to cooling issues inherent in these often neglected motors. It also seems that they tend to lean out causing detonation issues if the ignition and fuel system isn’t perfect. I also read somewhere that the water pump is prone to cavitation at high rpm.
So I would love thoughts on keeping this motor happy under budget race conditions.
Obviously the other issues would be weight reduction, brakes, suspension and handling. But those would all be secondary if I can’t keep the motor alive.
Thanks in advance!