can any one help me do any of you no the psi compresion on a standard engine ive just checked mine
no 1 140psi
no 2 140psi
no 3 137psi
no 4 140psi
im thinking the car has low copresion pistons as the engine had new pistons aprox 3 years ago but the invoice only says surply 4 pistons on it at 460 pounds and this was done by owner before i got the car
the car is running 376 bhp greys rs500 torring car head from cosworth group a airfilter/dump valve at well lane turbo center with a t3 turbo running 27psi but about to fit a t34 to the car
thank you for your help

 

Im not sure if the compression says its low or not mate, i dont no if a compression test tells you that or not, some of the other fella`s will no better

What i can say is i find it very hard to believe that your car has 376 with a t3, not a dig or anything but people struggle to get that with t34`s