I'm about to have my VQ35 fully built. carillo H-beam rods, je pistons, arp studs, etc. how much psi could i run safely? this is still my only car, so i want reliability. I dont plan to run more than 8-10 psi on a daily basis but i was just curious on how much i could run safely. thanks for any input.

 

i know of built 3.5s that are running all day long upwards of 600whp. it depends much more on how well your car is tuned than what parts you threw at it. you're going to be breaking transmissions before you're breaking engines if your car is tuned well.

 

damnit. i dont want to break that either! this modding **** sucks. but yeah, it should be pushing 550-600 whp. just curious as to what boost levels thats talking about. thanks for the input though.

 

Just buy an extra tranny....that's cheap *** insurance compared to the price of building that and building your motor.

 

I run that much on a stock motor over-revving to 7000 rpm. If you tune is good they can take some abuse. You will break trannys though, I would build that before I pushed alot of power on a built motor. Only car would make me nervous.

 

It's not about the boost pressure, it's the torque the engine's making. Are we talking a SC or TC here? 8-10 psi on a single turbo you'll only be around ~375-400whp, and a bit less wtq, assuming a good turbo choice and well tuned. If it's a SC then the wtq will be a lot less and you wouldn't even need a built motor probably.

If you're talking 550-600 whp, then you'll be boosting into the mid-teens (psi) but again are we talking turbo, or SC?

I agree with the others though, the tranny will be your issue long term if you're talking >350-400 ft-lbs.

Also, as many can attest too, 550-600 whp on a FWD street car is almost useless. You'll never put that to the ground at a reasonable (ie safe) speed. You may even have issues on a 1/4 mile/road course track if your tires and suspension aren't seriously upgraded. What's your goal and use with this car?

 

Streetz is running 10psi daily on his automagic. Equivalent to ~314whp

 

It's a rear mount turbo and he's got a VQ30 not a VQ35...

 

You're right, they're different.

 

But if your point is that 314whp is reliable on stock internals, I'd say that's true of either engine as long as things are done properly (adequate fuel system, tuning/engine control etc).

 

im putting a turbo in. this is my only car, but i dont even plan to take it to the track much. once or twice a year. i just want to be able to rape anything i come accross on the interstate or something. suspension is being upgraded too. putting some tein ss coilovers on. it would be nice to win come nice competitions at shows though.

 

can you not get a drivetrain to perform as well as its torquey engine counterpart..so you dont abuse it as much...?

if someone wants a strong motor and daily driver car....cant they get a super strong...drivetrain..and then achieve the word....reliable....?

 

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and just what parts would you suggest he replace in his drivetrain to achieve this? as far as I'm aware, no one makes any aftermarket internals for the MFA60.

 

want my advice? spend 2grand on a used 4th gen maximas as a DD. then turbo yours. having a second car makes projects SOOOOO much easier...

 

Im going to have to agree. Or get a reliable pick up truck like me

-matt

 

Or maybe another spec v? lol

 

no, spec v's have too many problems.. i mean, the first two things you have to do is loctite butterfly screws and get a header so you dont get a precat failure. my maxispec is good enough now though. i like the idea of a 4th gen. maxima though.

 

it was a question...? ...I have no idea...

 

You should have at least two cars. Period.

 

A second car/reliable DD is a must. Great to hear you're considering a 4th gen!!