70 trim turbo to big?

[k00laid83]

well guys i've been researching this for like several hours now and cant really get a very good answer! well i friend of mine gave me a brand new garrett 70 trim turbo for free. seeing that im going with an sr20det do you guys think that this turbo would be to big for my engine?

[k00laid83]

so can anyone help me out here? i mean ive been researching and there really isnt much on how big a turbo you can go on a sr20det

[Blown240sx]

The bigger the trim the longer your spool time. I recommend if you are going big though it MUST be Ball Bearing. I stick with the 50 and 60 trims since they spool faster but if you build the motor with slightly higher compression pistons say 9:1 or 9.5:1 you can spool a larger turbo faster since the exhuast gas will exit with a higher pressure.

My car is running a GT35 equivalent fully ported and full boost is about 3800-3900 rpms. So yes a big turbo can work on a SR just you have to do the research to see how well each turbo spools on different motors.

[k00laid83]

hey thanks blown240sx i appreciate the help yea my boy gave me this turbo and it brand new never been used so i was hoping maybe i could use it when i swap in my sr thanks man finally an answer ive been researching a few days now!

[sleepin240]

Do you know what kind of turbo you recieved and where he got it from?

[karmakaze]

The bigger the trim the longer your spool time. I recommend if you are going big though it MUST be Ball Bearing. I stick with the 50 and 60 trims since they spool faster but if you build the motor with slightly higher compression pistons say 9:1 or 9.5:1 you can spool a larger turbo faster since the exhuast gas will exit with a higher pressure.

My car is running a GT35 equivalent fully ported and full boost is about 3800-3900 rpms. So yes a big turbo can work on a SR just you have to do the research to see how well each turbo spools on different motors.

what is full boost for you?

[Blown240sx]

14-15 psi

[k00laid83]

he got it off of ebay!

[Blown240sx]

Dont use it. It will blow up.