Join Date: Jun 2004
Location: In the Back of your Mind
The V8 is rated for a cooling pressure of 21 lbs? Wow, the 4s only run 15 PSI (one BAR).
First make sure that the cap you are running has two seals, one on the spring-loaded center section, and one larger one inside the top of the cap. Some Lotus 'genuine parts' don't have the larger seal these days, and you NEED that. I ended up buying a dusty old cap from an auto parts store...
Another watchpoint is the plastic header tank in the engine bay...they can develop stress cracks about an inch below the neck and no longer contain pressure. (I believe JAE can sell you new ones, they are from a Peugeot).
Succasunna, NJ USA
"Not all angels have wings." - Turbo R