what turbo would create more wear

[eclipsemustang]

i've searched but couldn't find an answer, but my car will still be a daily driver what turbo would put less wear on an engine an EVOIII or a 50 trim, the 50 trim would probably be set at a slightly lower PSI than the evo but i've heard even at higher PSI the evo's wouldnt put as much stress on the engine is this true?

 

[dieseltech]

Basically more boost = more stress and wear on an engine.

 

[delta448]

Hard to say.

You would have to determine the efficiency of each at the boost/flow levels you'd use them each at. Pushing less boost with a bigger turbo doesn't always mean you get more efficient.

You'd have to determine the amount of power you'd be making with each. Would you make more power if you had the ability?

You would have to take into consideration how much stress the different turbos would put on the intercooler and the exhaust mani at the boost/flow level each would be used at. Bigger turbos usually have less exhaust restriction but can heatsoak intercoolers quicker.

I think you should be more worried about which turbo suits your goals the best. Pick one that does what you want performance wise and then deal with the rest of the issues separately. You will have different tuning obstacles for different setups. Decide which turbo will get you where you want to be performance wise, and bigger is not always the best option.

Daily drive or just weekend drag race? Do you want fast spool or big top end? Are you shooting for more than 370whp? Are you on a budget? How much are you willing to break or upgrade to prevent breakage? These are the things that you have to answer for yourself.

 

[Thomas91169]

the thing is, its only going to create more "wear" or stress when youre actually at full boost/throttle.

if youre normal, you probably wont hit full boost/throttle on your daily commute, unless you drive on the freeway. at least, for me that is. otherwise depending on turbo, you might reach around 0-5psi normally getting up to speed at a moderate rate of speed and throttle input. thats not going to do much to wear and stress these motors. 400hp is teasing the 4g63.

and to let you know, psi and heat kill motors. airflow doesnt. you can do the same amount of airflow at 13-15psi with a 50trim as you can with a E16g at 20psi. IMO the E16g shines at 20-25psi if you have a front mount to keep the temps low, run around 40lbs/min of airflow, and it would take a 50trim 20ish psi to do the same.