alright guys well i decided that i would rather spend my money on turboing the formula than buying a cbr600rr after 2 friends were hit buy stupid old ladies on their cellphones, so here are my plans;
use stock mani and custom make the crossover. ill probably run it around the front of the car and delete the a/c. now here are where the questions come in, my car is relatively stock with mods listed in sig but since its a fresh motor im still considering what i should run boost wise. this is important because it will help me determine the size of my turbo. im considering running ~8-9psi on pump 10-12psi max on race gas and would like a turbo that would be efficient at that level but not overkill? i think a t-67 would be overkill for my situation. so...
motor and updrages in sig
would i need to get a boost sensitive fpr?
what size turbo should i go with? t67 overkill?
what ewg? tial 44mm?
also what types of boost controller do you guys use or just go off wastegate spring?
have you guys seen someone with relatively the same set up and goals and if so can you maybe direct me to them?
also one thing i have not noticed is where people mount the front mounts on formulas. ive seen them on transams but not a formula.
alright well sry for bothering you guys, im not new to turbo cars as my DD is a 07 sti and i spend a lot of time playing with the car in many different ways.

 

I'm more of a blower guy, so I wouldn't be the best one to advise you on the turbo selection, but I can offer my .02 about boost in general with regards to a "stock" LT-1 motor. Your'e just not going to be happy with the longevity of your current motor if you're going to be putting boost to it. You may see better results if you back down your target boost numbers, but eventually you will want to turn the boost up and the motor will not live for very long. Consider getting at a minimum, a good set of forged pistons specifically designed for forced induction and drop your compression ratio to a boost friendly number (approx. 8.5-9.0 to 1). Also, check out one the the "stickys" at the top of this forum section as it has some useful information.

 

well the thing is, is that when i built the motor a year ago i didnt plan on boosting it and then a day after it was finished the car caught fire(engine builder broke fuel line) and i finally got it going again. motor is still brand new with only 400miles on it and was not hurt by the fire. its not my biggest deal to get longevity out of the motor as its just gonna be a rare weekend warrior and if it blows ill just rebuilt it with forged internals. and yah i spent a lot of time on the stickys, but im in kind of a weird situation. i only decided on this because the motorcycle thing fell through and i want something as a project. thanks for the advice though.

 

I agree with what boosted said about the motor. Its a crap shoot. With a good conservative tune and 5-6psi, you should be in good shape. I'd get a T76 over the T67 since a T76 @ 5psi should make about the same power as a T67 @8-10psi. Less boost is best with the stock pistons...

Detonation breaks stuff... so keep the tune conservative and you should be ok... for a little while.

44mm gate is plenty big... more than you need... but bigger is always better with wg's.

You will want a boost referenced reg.

 

so i wonder about getting a turbo the size of a t76 over a t67. what would spool be like on that size of a turbo? and i definetly agree that a bigger turbo would be more powerful at less boost than a small turbo at a higher boost but i kind of dont want to go overboard. i also agree that its probably not a great idea on the stock stuff but its all brand new and i have a DD that i wouldnt have to drive around mostly.

 

also from looking around a t76 is quite a bit more expensive

 

I ran a turbonetics single ball bearing T76 and it spooled very quickly. Obviously not as fast as a stock sti, but as soon as I stepped on it, I had boost.

 

could you direct me to a good spot to purchase a t76 from. and yah i already have a full turboback exhaust and tune on the sti and that thing builds 20psi around 3200rpms but of course tapers badly by redline. also it says you were on stock heads and cam also stock bottom?

 

also should i order an ebay intercooler and ebay cold side piping? ive read about a couple of people just using the intercooler and coldside piping but i wish i knew where they got it from and how well it was put together.

 

also i just realized i alerady have a new regulator thats boost referenced. its a aeromotive 13107. my mistake. DOH!

 

https://www.camaroz28.com/forums/sho...d.php?t=573771

Josh is a great guy to buy from and he'll give ya a good price. Realistaclly, a T67 isnt that much cheaper than an equivalent T76 (say you are comparing two P trim turbos for example, the savings is ~$300).

Justin (1982z28with18's) had forged pistons/rods, but he could have ran the stock bottom on 5psi (like he did... and he ran 11.2 @ 121mph @ 5psi).

 

cool man thanks a lot. it sounds like i will be going for the t76. what .ar are most people using on their setups?

 

.96 A/r is the biggest. It will spool plenty fast, even with that housing.

 

ok that sounds like a plan, let me re-write my list of things i will be using or already have.
Stock cast mani-have
42lb injectors, may go up to 60lbs-have
aeromotive 13107-have
Ebay intercooler 31x12x3 or x4? recommendation
Ebay Universal piping kit for coldside
T-76 with a .96a/r non-bb?is it really worth going ball bearing for my plans?
tial 38mm ewg with a smaller spring or 44mm?recommendations?
bov recommendations?

realquick i wonder if you make or have a kit that utilizes the stock manifolds that i have? just the rest of the hot parts besides the manifolds?

 

For your power levels, 3" or 4" thick IC is fine... if the price difference isnt much, I'd get the 4".

Ball bearing turbo isnt necessary unless you can find a really good deal.

Start with 60# injectors.

38mm gate should be fine, but bigger is always better when it comes to gates.

It would not be $$ beneficial for you to buy the rest of the piping from me. The reason is because I buy stock manni's for $50-75 a set... so I would only deduct that amount off the total hotparts price. My setups come with nice Vband flanges/clamps. Also, if you want to flip the exhaust manni's and run them out the front of the motor, the flange on the pass. side will hit the motor mount. That flange needs to be cut off, so you would need the manifolds modified and new flanges welded on.

If you go with the stock manifolds in the stock locations, you could use the current flanges on the manifolds.