big 16g, help or harm?

[DSMpunker]

Heres the deal with my car. Just bought it 2 weeks ago and while the kid was delivering the car, he tells me the wastegate actuator isn't working properly and i am going to need a new turbo. Not a problem cause i have the money and I planned on upgrading to a big 16g. This kid is one of my friends so I talk to him about upgrades and the such. Before I bought the car, he said the upgrade was a good idea, but now that i own the car he tells me the block won't be able to take it. The car has approx. 168k on it, but it has a freshly rebuilt head custom done by turbotrix. My question is does anyone have any advice on if my block will be able to take 15psi from a big 16g w/ a 255 fuel pump and 550 injectors? i really appreciate any advice. thanx.

 

[fast_talon]

16G and 15psi on that engine..I dont see why the block could not handle it ,but I would check the compression test....

 

[candela]

it will definetly be able to hold it...you've obviously driven the car and it runs alright i presume, 15 psi really isn't much at all, i think you will be just fine!

 

[DSMpunker]

thank you for your replies, but new question is, how many psi to run? the compression is fine the last it was checked.

 

[90tsi]

I ran a 13.3 on my old small 16G with 175,xxx miles on the stock motor @18psi (race gas), now getting ready to put on an 18G at 185,xxx.

 

[candela]

Well that all depends on what your supporting mods are. 15psi really is ok for minimal mods, but if you want more boost should be #1! What is your current set up? As long as the motor is ok, you might as well boost till it blows,...

 

[DSMpunker]

my current setup is walbro 255, UR underdrive pulley, and full 3in exhaust will be on within the week.

 

[DSMpunker]

update on my car: IT!!!! MY TRANS BLEW TODAY, ARGHHHH!!!!

 

[DMS-WhiteGSX]

I'm running my big16 @ 23psi with 660s...

not all the time of course.

but it handles it

 

[GSTspeedracer]

126,+++ miles on mine.......and 20 psi on regular pump gas, everyday!