A bunch of turbo questions...

[Esper]

Okay, ready for an onslaught of turbo questions? <P>What kind of turbos are people getting? i'm looking at one from the most recent Eclipse/Talon GST and GSX. has anyone done the math with the compressor map to figure out how well this would work? The reason i've been looking at this one is they are plentiful and CHEAP.<P>What size/ shape intercoolers have people used? i've seen a number of intercoolers from volvos on ebay, along with ones from Probe and MX-6 turbos. I like the idea of an MX-6 intercooler but have no idea how convienient it would be to plumb one to the turbo on an MX-3. It looks like it would be easy to mount it upright in the space between the bumper and the radiator, but is it bad to block the airflow to the radiator? that way, the pipes would be at the bottom and could easily be routed back. I'd like to keep the pipe design as simple as possible to keep costs down. <P>In that vein, how much does it cost to have an exhaust manifold custom made? It seems like it would be cheaper to make one for a 4-cylinder than a V6 (the ONLY advantage to having an RS, in my opinion!). if anyone has done it to their GS i'd like to see pictures if you've got 'em. <P>My main goal with this possible project is LOW COST at the moment. i want to add a turbo for the least possible money. so far i can get a turno for ~$100, intercooler for $30-$50, and plumbing for maybe $300-$400? high boost, HP, and torque output come second to price, esp. since i'm still running my ATX and don't want to fry it after 5 months. the idea of a turbo sounds much cooler than a 2.5 swap and gives me a lot more flexibility in the future for when i finally do switch over to MTX. your help is MUCH appreciated, thanks.<p>[ November 02, 2001: Message edited by: Esper ]

[codene]

where the heck are you getting these prices? maybe their all broken. that sounds way to cheap. go with a T3/T4 turbo and a spearco IC around 5 1/2"x24"

[boostedmx]

That sounds about right if you get some good deals on used stuff. if your not going to go crazy it should be good for about 170hp. the eclipse turbo is capable of doing a little more but I wouldnt risk it. and it would be more money anyway. a good cheap turbo is just a regular t3 turbo, can be found for dirt cheap and they dont have much lag. get a eclipse intercooler it will be fine for now. now you have to worry about the fuel system. basic upgrade would be injectors from the 1.8l miata and an fmu, this should be ok. might want to check into nos its great i love it. <BR> by the way rs models need lovn too.<BR> :p<p>[ November 02, 2001: Message edited by: boostedmx ]

[Esper]

rs models need the most lovin of all! i'm getting these prices on ebay...its mostly used stuff that still works well. run searches on "intercooler" or "T3 turbo" and see what you get. the stock IC on the eclipse isn't very big, although it is deep. i don't want to go much bigger than that or risk losing pressure. if i decide to upgrade to a 16g or T3/T4 hybrid i would upgrade the IC too but the main objective now is COST. there seem to be a lot of T3 turbos out there too so i might go that route. how do i hook up an oil cooler to it?

[Esper]

oh yeah, what's an fmu? like an AFC, or a pressure regulator, or what? and what sort of fuel pumps are you guys (CJThor)upgrading with?

[RanMan]

I think I read somewhere that the RX-7 fuel pump will bolt up and has a higher flow rate.

[texmx3]

not to be an a hole but save you money and do it right the first time. the way you are trying to go is cool but when you get that feel of powers you will want more , i promise why are you gouin to do all the up grades afterwards. try looking to thomas knight alot of people are giving him a bad reputation but chek hm out for yourself what ever you are lookin gto try and due it still going to cost you more than you planned. i know it was about 450 to 600 us to make an exhaust manifold custom you still will be looking at about 1500 us check around before just using ebay. thetime you invest learing about the your project will help out alot if you want caheap horse power gains look at NOS for you car and have put on right cheap horse power insant gains

[Bri94GS]

If you're going to use an Eclipse/Talon turbo, use one from a 1st Gen 5-speed, because they're the biggest ones (td05h-14b)...the automatic ones have smaller turbos

[Esper]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>check around before just using ebay. thetime you invest learing about the your project will help out alot <HR></BLOCKQUOTE><P>that's why i'm talkin' to you guys!

[MX3RS]

ok how much boost do you think that you need to make? I mean the 4cyl can only take so much pressure especially since the compression ratio is higher than normal for a turbocharged engine. But if you want a lot of boost than just make sure you have plenty of fuel getting in there. You really dont need to spend a ton of money on a turbo that has a hugh CFM flow cause there will be lag and the 4cyl cant take that much air in at once anyways. Go with an Eclipse 14B turbo. That will be just fine for you. I have a Mitsubishi Starion Turbo right now and I can tell you a bunch about Mitsu turbos if you have any questions. Hope this helps.

[eunos30xdownunder]

The way i look at it is this. You can get a second hand turbo kit and wack it on... but if your a real racer or love to mod your car. You will find, that a proper turbo job needs so many other things that need to be changed, Like the ecu settings, timing ... christ seriously your looking at close to 6000$ for a full turbo job done properly and tuned for max performance that we all expect out of turbos.

[texmx3]

it is good to see another voice of reASON WHY GET A MITSU TURBO WHEN MOst of those cars have garrett turbos on there cars now anyway. i have not seen a 16, 18, 20g turbo on many eclipse or talon so why go there spend your money right the first time. is all i stress to people. get the block that can handle boost you want to run. You can say that you want to run only 8lbs of boost when eventually you will try and get more boost and then blow your motor then were are you at square 0 with no car. now if you use a stand alone computer you can tune it to last for a a while the mitia that was in turbo mag.a month or two ago ran a 10 sec pass and he has a n/a motor with a turbo kit on it but even he has had to go through motors at that.but the motor was able to handle 25 lbs of boost so you do the math for yourself. either way it going to cost quite a bit of money. if low cost power gain is your goal then just spray your car with a 50 shot of nos cause what you are trying to do is not going to allow you much more with out paying alot of money.

[Esper]

uhhhh, guys. chill out. this is an idle musing of mine with which i wanted some constructive help and suggestions. please don't tell me to run nitrous, i don't want a system that doesn't work all the time. the whole point of this post is to see if a cheap turbo system can be done. maybe not, i'll live and move on. [img]shrug.gif"%20border="0[/img] but i really appreciate the people who actually have given some good suggestions and not just told me to get NOS. this post isn't "turbo or NOS?", its "turbo questions." anyway, on to more productive talk...<P>it looks like a garrett T3 turbo is the way to go. over in the probetalk forums there are quite a lot of people doing the same thing as what i want to do, and they are using T3s. they seem to be pretty easy to find, too.<P>as far as boost goes, 6-8psi is what i'm shooting for. i think that's the most i should use on a stock motor (suggestions anyone?). that should give enough power to satisfy me but still keep things working smoothly. <P>ok, so after the intercooler, where does the air go? obviously, back into the engine via the throttle body, but where should i route it in? just connect the pipe to the intake and leave it at that? what's the best way to route it back in and keep harmonics going well? i don't want to add too much turbilence to the intake charge.