Stock 5s limit Options

[macavely]

Ok i can't seam to find what i was looking for ..

so my question is what is the highest reported boost before breakdown on a 5s with stock internals..

and also does anyone if there is a company that makes stronger valve spring for for the 5s ?

[lagos]

its one thing if your sending a motor out for work to get done.. its another thing when your doing all the work yourself... now your telling me cause i'm going to do all this work myself i have no skills??

building an engine is building an engine. It's the same amount of work if you use OEM parts or parts that can handle 20psi... it's only a matter of $$$$... that's what lagos means.

yep thats what i mean. its the same amount of work to put it oem pistons and rods and it is to go with forged ones. the problem is, that youll have to upgrade EVERYTHING in the motor to do what you want. so the real skill here is to have enough money to change everything and to be able to keep up with all the issues that come up from having such a custom setup.

20psi is A LOT of boost. its not easy to run that much on pump gas. a 3s would have a hard time with it, and a high comression motor like a 5sfe wouldnt stand a chance. remember, your talking about building a 300-400hp 5sfe. if i had to guess, id say that would cost you at least 10grand to build up the motor, with the turbo and stand alone ecu. and even after that, it wouldnt be a realiable daily driver. even if you did the same mods on a 3sgte, getting 300-400 hp out of a 4cyl motor is not an easy task.

This post has been edited by lagos: Jan 26, 2006 - 3:15 PM