Current STI project at RS Motors

never mind misread what you were saying.

 

if i keep my car for a long time and pay it off soon i would seriously consider a 35R and a ragoli tranny. you figure 10K is a small price to pay for a trans you won't have to worry about breaking + a stock trans goes for what like 4K? Everything is a toy if you have fun with it!!!

 

^ Wait and see how Derek's tranny turns out. He's gonna be putting it together in the near furture. He's also just waiting on HG's for the motor.

 

That's why your using gt4088 cause the 3.1mm inducer and 8mm exducer is going to spool a hole 200rpm's later but make more power and tq.:roll:

 

^^^ Its all about efficiency plots, my friend.

 

ek6hatch is the last person you need to tell how the turbo game works

 

If they want to make 500-550awhp and to make that @ RS that will probably take 30-34psi on the gt4088 witch is 74-72% efficiency and would probably take 26-30psi on the gt4094 witch is 77-76% efficiency... Also it would make the same power with less boost and what about SPOOL?!? Since you have to run probably 3-4psi less to make the same power the spool RPM will be the same but will be more EFFICIENT! Cause that is what they are after.

 

Um. You do know we are using a 4094 right?

 

Haters

 

No i didn't sorry...

 

i agree ek6 knows his turbo's why he does not work at a car shop is beyond me.

 

turbo

I did post a picture of the GT4094. I was gonna use the GT4088 at first but Precision said I might not make my goal and suggested the GT4094. I can easily switch between the turbos and make a comparison as far as spool up and what psi it'll take to reach the goal.

 

Hm, I think you should, so members here can see the difference.

 

Yeah i read the post wrong that is why I said what I did, but project looks good so far!!!

 

Installed pics

 

sweet, very sweet

 

Very nice. You guys going to be doing any coating or wrapping of that wicked pipe set?



Man, what I'd give to have a clean car to work on...

 

how long did each runner end up being? don't look equal to me?

 

If you buy lunch I will let you come out and measure :biggrin:

 

no i will not go on a date with you! cant you just tell me how long they are?

 

Today we start on the intercooler.Pics later today.

 

Liquid cooled intercooler pics.
Still have the top piece to finish. We are making these as a direct replacement for the stockers too. This will be able to support 750+ at least without any lost of spool up or pressure due to extra long intercooler pipes compare to a front mount.
before


after

 

looken good!

 

I still have to clean and polish it up after fab king finish the top piece. So it might look a little dirty on some spots

 

wow, looks great. Those welds...all i can say

 

yummy top mount...even i would rock that TMIC

 

:eek3:wow :eek4:

very nice!

 

If you put the intercooler in the stock location where do you put the water fill? Also wouldn't you want the water tank to be higher then the intercooler.

 

not if there is a pump of some sort!!

 

It will have an icebox/water tank where the battery used to be. We're also using a Meziere electric water pump to cycle the ice cold fluid around at 20 gpm.

 

I think I'm sold on the badass air->water intercooler setup. Having practically no piping would be really nice, especially if the turbo is back there.. Just some decent sized AN lines.

 

This is unique to Subaru having this much room in the engine bay. It only makes sense to put it to use.

 

ur makin me wish I had more money Project looks really good Ron! cant wait to see the end result!!

 

But how do you keep the system full? Wont the tank be lower then the intercooler?

 

A high enough volume pump could get enough water moving to get the air out. Other wise some sort of filler at the highest point?

 

I see what your saying with the pump. But wouldn't it be better to keep the intercooler full of water all the time. Maybe it doesn't matter. Other wise I get what your saying on having the filler neck at the top.

 

It would be full of water all the time. Plus, you could cycle the coolant with the IC loose so you could turn it to get all the air out of the IC. Besides, with a tank as the highest point in the system (where would you put it BTW), you wouldn't be drawing out of it into the IC, since they want to be able to put ice in it.

 

Well every system I have ever seen. Mounts the inter cooler really low then mounts the tank above it.

 

i looked into doing a water/air interecooler and figured it to be more of a pain in the ass then anything. would suck for driving around on a power tour becouse all it would do is heat soak and become worthless. but for the 1/4 mile at a track it would be sweet as hell and would work grate on a dyno to get a high number. just too much of a hassle for me.

 

how would it heat up any different then a regular intercooler? it uses the same concept, accept the air is cooling the water, i think it would be about the same

 

For your setup Matt, it wouldn't work so well. With the turbo in the "normal" spot, it would be much easier.

 

Most guys running around locally use ice water and it lasts all night. That includes power tours and parking lot standing.

 

Kind of true. I have read that the heat exchanger does not transfer heat that well. Air to air is good for all around but for high power air to water is key.

 

its harder to cool down the water once it heats up and a air to water set up. but on a front mount air to air set up the intercooler is at the front of the car getting more cool air the faster you go making it easier to maintain a cooler temp once you have been doing allot of pulls or going around a track. plus you can use other things like cryo kits and spray kits to keep a front mount cool when they would have little effect on a water to air set up. plus air to air is lighter and like i said before, way less of a pain to set up.

 

There are always pro and cons to every set up. One can always say all the good things about one system if that system is preferred.
We'll just have to hit a road race track at the same time and log intake air temps.
I've had a front mount on the Evo and it heated up so fast just going through the gears on a quarter mile run. Then I had to sit and wait for the cooler to drop temp while spraying it with cold water. I would guarantee I can do laps with this set up for at least half an hour before the ice cold fluid heats up. On a hot summer day, one will have a really hard time getting intake air temp below the actual temp that day. With this set up, the engine will feel likes it winter again.