how much boost = blown engine?

[speedracer91]

whats up i have my car is in the shop right now and the mech. said that my mbc made my engine blow...is this true cuz i'm only 5 psi above stock....thatks a lot
P.S. i've had it on for about 4 months with no problems.

 

[David15151]

uhm... i doubt it.. what was the PSI set at? Did you have a logger to let you know if you were knocking? How hard did you drive it?

 

[KatieMak]

Yeah I doubt that 5 psi over stock would blow an engine. Unless it wasn't at stock before you upped the boost. It really all depends on how good of shape your engine was in before you upped the boost and how hard you drove it while it was at that psi. If the engine wasn't in the greatest and you beat on it...then it could be a possiblity...but blowing an engine can be done by a lot of things...so I wouldn't be surprised if it was because of multiple things working together to result in the blown engine.

 

[Endz0r]

what kind of gas were u running?