well...i don't know why my pressure goes down in idle... I use now Shell Helix Ultra 10W40 100% sintetical oil.
And Charred, thanks for the information. Spankee my setup is alcohol like fuel, 1 Bar of pressure(around 14,5 psi), 9,8:1 of CR, head worked, and good timing ignition(agressive). But i don't know if i maked this power, i need put in R.R.
Thanks for yours information.