Turbo question

I'm planning a N/A turbo conversion for this upcoming winter, and I was just wondering what turbos could be used on the N/A motor without risking predet. or some other type of failure. Are there any other turbos besides stock that could be safely used on the 10:1 motor, and would also help on performance?

i wouldn't go any larger than 13g's on a 10:1 motor.

you can slap on any sized turbo: its all in the tune.

you can slap on any sized turbo: its all in the tune.

thats only part of it. Grant it, if you put a bigger size turbo on you can make a couple extra hp at the same boost levels because of the turbos effeciency, but then you can't really take advantage of actually having the larger turbo and upping the boost. This is why I say 13G's is because they are more effecient than the 9b's, able to hold more boost to redline since the 9b's will only hold about 10 to redline and the 13g's will hold a lot more. You will only want to boost about 9 psi without alky injection or 12-13 psi with alky injection. You start spending more money on even larger turbos, then you just basically spend more money then what you are actually getting out of it. Unless your going to try to put on a huge single like Chris did when he was doing project SL-T, its pointless IMO to go bigger than 13g's unless your planning on rebuilding to a lower CR really really soon.

blah blah blah. LOL, just kidding. i gave him the short answer, but you were such a kind sir as to explain things with an educated opinion that is practical. i agree with you 100%, hotshot. i'm just bustin ur balls :p

well don't bust them too hard . . . i actually need those for all the gals around here :wink:

i wouldn't go any larger than 13g's on a 10:1 motor.
100% agreed. ALso if you are going to do the conversion you may as well look into tranny upgrades such as LSD or even a AWD covnerted to FWD tranny now. I broke one with the SOHC's whopping hp numbers so a DOHC with a NA tranny and 320 hp is bound to destroy a few too.

just throwing this out there if your interested and decide to go 9b's i've got both manifolds, both turbo's (no blown oil, very little shaft play), gutted precats, injectors and the fuel pump.

PM sent mygreenTT

Thanks for the responses guys. It helps me out quite a bit.

The bigger the turbo you go the more boost you can run, on pump or race gas.

"back in the day", when no one wanted to go bigger than TD04 turbos everyone was stuck at 16-18psi on pump gas, ran hi 20's for race gas, and had EGT's around 1600*. Now that people are finally running bigger turbos they can run low 20's without a problem on pump gas, over 30 on race gas, EGT's are much much lower, and make a ton more power.

I would run 14b's or Evo3-16G's with a 10:1 motor in a heartbeat. Not only will it be safer on the motor because of the reduced back pressure, but if I wanted to live just on the edge of knock(pump gas) it would be at ~15-16 psi instead of 10, and a lot more power. Also, since the motor is 10:1 it will spool the turbos sooner than an 8:1 motor.