has anybody here put turbo in there 1.8..is it possible

[MyEclipse5]

ok i pretty much know it is pssible bt i want about 200hp...is THAT POSSIBLE???????
i realy would like to outrun lik V8's and sh!t but i dunno if that'll be possible...help me out here
what would i need to make it turbo...well
PEACE


:confused:
hey look its a tree:tree:

[eclipse2nr91]

I don't know about this for sure, but I don't think you can run high boost at all with the 1.8. I think I read the guy here that did it was running something like 2lbs? I'm not sure, maybe I'm mistaken, but I doubt you can get 200 ponies out of the 1.8L. Just get n2o, like I'll be getting for... (as you so aptly put it - :tree: ) That'd be your best way to go for an instant 40 - 50 hp, at least that's the road talonblingbling took.

[Avman2119]

It is possible to turbo a 1.8L DSM. This is hard however and you can only push 2psi and that's after lowering the compression ratio. A guy on the dsmtuners.com board did it with his. If you want to push 200HP i think it is possible with the 1.8L but that is only if you bore it at least .020 over and get some pistons and rods that can hold the pressure. Also bore, port and polish ur intake and exhaust manifolds as this will help in dealing with the pressure. Also go with a 2.25" exhaust witha high flow cat.

[saturdaynight]

According to what has been said to me, you should get the turbo exaust manifold from the 4g32 engine to mount the turbo. The rumor is that it mounts directly to the 4g37 without any modifications. Note: the 4g32 is in the Mirage but I'm not sure what model year/s that is.

[Avman2119]

the turbo manifold is from a 1988 Mirage or a 1988 Colt both were made with the same enginge. or at least that is what i was told from dsmtuners.com

[saturdaynight]

Originally posted by Avman2119
the turbo manifold is from a 1988 Mirage or a 1988 Colt both were made with the same enginge. or at least that is what i was told from dsmtuners.com

Oh Yeah! I remember those cars! They produce 132hp out of the little 1.5L or 1.6L engines. The stock engine only had about 68hp so maybe that might help you a little in how much power the the turbo system is capable of! I used to own a Colt and read about the Turbol Model Colt's and Mirages.

[Avman2119]

It's true some guy got 141HP on the dyno from 2psi of boost i figure if u rebuild the motor, put some forged pistons into it and some better rods, and cam shaft you could probably push 12 psi or so, oh an bore it .020 over too then u could probably push near 200HP especially if you can get your hands on an adjustable cam gear to crank up the timing. Plus the 1.8 is so light it would kill with 200HP. Personally i'm gonna get me a 2.0 and rebuild it with a .020 over bore once it's done i'll drop in the necessary requirements and then have a fwd 2.0L Turbo that will push 195 HP with all the stock components. after that i'll get 2.5 inch exhaust all the way back with a high flow cat. t3/t4 turbo, intake, adjustable cam gears and a few more little extras to help it go go go. :D

[1992eclipse]

guys hes only running 2psi because he doesnt have an intercooler and he doesnt want to blow up his car. Im sure with tuning and an intercooler you could run more then 2psi. I have no idea how much the 1.8 is capable of but I doubt that guy who turboed his on dsmtuners knows either. Its just that no one has really stepped up and gone all out with their 1.8.
Dennis

[Avman2119]

actually the guy on dsmtuners.com knows what he's doing... You are right about the intercooler he's still waiting to put one in and with the motor already rebuilt i'm sure he can run at least 8 psi of boost if not more.

[1992eclipse]

Oh no thats not what I meant, you took that one wrong. I wasnt saying he doesnt know what hes doing. By what i have read about the stuff he has done im sure he does know. I was just saying that even he, the person who has done the most serious engine mods to a 1.8, doesnt know how far this motor will go. sorry for the misunderstanding.

Dennis

[Avman2119]

Sorry bout that 1992Eclipse I didn't mean it in an offensive way either. I was trying to say that i talked to the guy thru e-mail and he told me how he did the whole thing and how much it would run me and how much work is really required to do the project and the last thing he said was that he's looking for an intercooler for his car. Sorry too about the misunderstanding.
P.S. I have started to get the supplies for turboing my 1.8 and also i'm gonna bore it .020 over and get a rebuild kit for it from machv.com then throw the turbo on it and intercooler and then straight to the dyno. I am hoping to have this done by summer of 2003 i have changed my mind about the 2.0 swap i just don't want to ruin the originality of my beautiful 1.8 :-D

[saturdaynight]

Avman2119, what is the projected cost of Turboing the 1.8L?

[Avman2119]

Here is the e-mail i received from the guy that already turboed his 1.8

My setup is all custom. I bought the manifold and turbo off someone on a
local board for an undisclosed amount. The manifold was fabricated by KMA
racing, which is now out of business. The turbo is a Turbonetics T3/T4. I
have no idea what trim, but it's just a bit bigger than a super 16G. The
wastegate is a turbonetics deltagate mark II. Boost is set at 2 psi (took
the screw out of the wastegate) until I get around to installing an
intercooler. Why have I waited so long? I'm busy. And the particular IC
setup I'm going with is rather complicated. It's a top secret project, I
could tell you what it was, but then you'd realize how cool it was and do it
first and then I'd have to kill you. :-P

Compression is set at 7.8:1 by way of a double head gasket. I know everyone's going to try and convince you to "just buy different pistons". A
head gasket is 10 bucks. I seriously doubt I'll get up into an RPM range
where the weight of a piston really matters. The oil supply comes from a
braided steel line, off a T-tap behind the oil pressure sender. Oil returns
to the sump via a heater hose, clamped to a 45 degree elbow welded to the
oil pan. The intake piping was all custom welded, as well as the downpipe.
There is no O2 housing. My O2 sensor is threaded directly into the pipe.
The electronics remain stock, and the only change to the fuel system is the addition of a fuel pressure regulator. The entire setup was about 2600 new.
The cat and exhaust piping are now 2.5" but the setup worked with the stock
2" piping. I wouldn't recommend it though. You'll notice a stratospheric
improvement with a 2.5" turbo back exhaust.

Now the good news. You don't need to have someone build a manifold for you.
Before I found this setup, I had been researching turbocharging the 4G37 for
quite some time. Enter the 4G32 engine. The 84-88 turbo dodge colt and 84-88
turbo mitsubishi mirage came with a turbocharged inline 4-cylinder 4G32
motor. The sister motor, the G37B, was the same motor, but with a slightly
larger bore, giving it a displacement of 1755. For 1989, mitsubishi
redesigned the motor, giving it a better flowing head, rollor rockers,
hydraulic lifters and a few other goodies, prepped it for fuel injection and
called it the 4G37. The manifolds from a turbo 4G32 bolt right up. The 4G32
turbo motor took a TC03-9A turbo. If you want to use this manifold, you'll
want to have an adapter plate made to bolt up a different turbo. Preferrably
a Garrett T3/T4.

I strongly recommend you do a full engine rebuild before attempting this.
There was 3/4" of carbon on top of my pistons at 130K. If you need to run
oil lines, you'll need to take the oil pan off, and have an elbow welded on
it for the turbo. Try to get it lined up with the oil outlet on the turbo as
close as possible, and weld on both sides of the pan. If you take shortcuts,
you'll be sorry later. If the turbo you choose takes water lines, heater
hoses are very easy to splice. I recommend an aftermarket oil cooler kit.
You'll notice a significant drop in oil pressure, and keeping the oil cool
is a must for longevity.

Depending on what turbo you buy, you may be able to use intake piping made
for the 2.0. The throttle body won't bolt up, but you can find silicone
elbows to take its place. Exhaust work will have to be custom. If you lower
the compression ratio, you should be able to get at least 15 lbs of boost in
there without a problem. As with any turbo conversion, tuning is no longer
an option. It's a requirement. Don't skimp on guages. Most folks who rely on
an Air/Fuel meter to give them accurate engine health readings end up with
blown motors. Buy an EGT guage and enjoy the piece of mind that comes with
it.

Now for your specific questions. With an overbore, you will be putting a
little more stress on your connecting rod bearings than they were designed
to handle. I would recommend turning down the crank and installing
oversized bearings. Larger rods too, if you can afford it. Your motor will
run a little less smooth, but you should make more power. If you lower your
compression ratio like a good boy, and tune it right you should be able to
get at least 12 psi in there without a problem.

Now try to remember, PSi means different things to different motors. PSi,
temperature and volume are directly proprtional. The laws of physics will
tell us that when you raise the pressure of air, it also raises the
temperature (about 10 degrees for every PSi). The reverse is also true. So
if your turbo is heating air more than compressing it, you could have 2 psi
and still be detonating like crazy.

When I say 12 psi, I mean 12 psi at a reasonable temperature from a
reasonbably sized turbo, with 2.5"-3" intercooler piping - and a properly
tuned engine. Nobody has all the answers for this motor. Yet.

Anything else I can help you with, let me know.

Keep the 1.8 alive

141 HP @ 2 psi and rising - Kalani

Hope this helps and the turbo header is from the 1988 Mitsubishi Mirage 1.6L Turbo G32B or G38B engine.

[saturdaynight]

Wow!!! Thanks for the info!!! This should be a sticky!!! :D

[ginsu417]

Sorry guys, the car's mods are top secret now. Too many people don't have thier facts straight. You'll just have to wait till you see it in the magazines. I will tell you this. I have installed an intercooler since those pics and I'm way over 2psi. Over 12psi, in fact. I won't give HP numbers, and I really couldn't even if I wanted to since I haven't been to the dyno yet, but trust me, the 4G37 will take a lot more than 12 psi on stock internals.

- Kalani

[Avman2119]

Hey Kalani,
The car is looking very sweet. I can't wait to see the numbers on it. Mad props dude. Your car is the talk of every 1.8 forum and many 2.0 forums. I think the 2.0 owners are getting scared because the 1.8 is gonna be kicking their @$$es. Keep it up dude.

-Alex

[saturdaynight]

Yes Kalani,

You are the talk of much discussion. Those who have the cash to do so will follow in your footsteps. New life has been brought to the 1.8L because of your endeavor. Mad props indeed!!! :D

Note: I would love to see this turbo setup added with the setup that Miketribal had in his 1.8L. According to him he was pushing 150hp N/T. He had a list of mods a mile long and spent over 2k to do it. That comination would be killer for a 1.8L.

[anconover]

u want 200hp? hrm, 200HP isnt really gonna beat alot of v8's... some but not too many.

[ginsu417]

Reaaaally? what about all those civic Si drivers that say they smoke Vettes all the time... the ones who have upgraded shift knobs and seat covers listed as mods.... hehehe

200HP isn't enough to beat much. Which is another reason racing a 1.8 doesn't make much sense :)

[Avman2119]

Personally if u look at the horsepower of a V8 stanger it's not that much compared to the weight it's gotta pull behind it. I havent' done the calculations but i know that the HP to weight ratio of a mustang won't be that much off that of a 200HP 1.8 that only weighs 2500 lbs or so. I know that it won't beat everything but it will beat some and if it doesn't beat them it'll still turn quite a few heads when a 1.8 keeps up to a stanger or maybe beats a 2.0T. You never know what's gonna happen. I'm surely keeping my hopes up.

[Avman2119]

Ok the mustang puts out 260 HP with the GT V8 and weighs over 3900lbs. This gives it a wt -> hp ratio of at least 15lbs/hp

now a turbo 1.8 weighs 2500lbs but add a little to the weight of the turbo. At 200HP it gives it a wt -> hp ratio of 12.5lbs/hp That is A lot better better than the stock 27.17lbs/hp and it also means that by the lbs/hp ratio the turbo 1.8 should be able to kill a mustang gt after the mods. and also the 2.0L N/T is like 2850lbs and has 141 hp or something like 20.21lbs/hp and the gsx weigh right around 3000 lbs with 195 giving it 15.38lbs/hp so a 200HP 1.8 should (by numbers) kill any of those vehicles but then again those r just numbers. Once this is done it'll be the truth. so believe it or not it is possible with the 1.8 no matter what anyone says.

P.S. hey Kyani how much hp do u think u have in ur 1.8 pushing 12psi? i know u didn't dyno yet but as soon as you do please post the numbers so we can figure the ratio a little more. Thanks.

[ginsu417]

Type: 4.6L V8
Displacement (cc/ci): 4605/281
Valves: 16
Horsepower: 260@5250
Torque: 302@4000
Curb Weight(MT/AT): 3273/3317

Avman2119 : More than 12 psi. I'm going to keep my figures to myself for a while, including boost pressure, since I'm tired of having to "prove it" to 2.0 owners. But figure on about 10hp/psi, from a baseline of 141 @ 2 psi with no IC on my last dyno.

- Kalani

[eclipse2nr91]

Ginsu, I just talked to you about this mod thru dsmtuners.com, and I'm stoked about the whole turbo revolution in the 4g37 that looks to be about to happen soon. Since you've done it, it seems EVERYONE is looking to turbo their 1.8L, especially me, I can't wait to start gathering parts to get it all put together. I'm hoping I can have everything done by October of next year, but that's just hopes. Mad props to you man, congrats on starting the next big thing, I'm looking forward to seeing your car in turbo magazine or import tuner, hehe;) Oh, and that setup Tribal had with the turbo added would be one freakin kickass 4g37.

[fast1.8sohcDSM]

If Kalani ever changes his turbo so he can spool up maybe he'll get better results. LoL :) I think see that little 1.8 trying to pull that turbo around. I agree man, keep them secret dude. Don't think he is dissing you guys, I mean if you have seen the pictures you know it is true. And hell with all the 2.0 boys who talk these engiens down. This is the time the 1.8 gets out of the gutter and trips some 2.0's on there faces.

[94eclipseDSM]

Damn this is to fuckig cool! I can't wait to see some numbers and read the articles in the magazines. Props to you!

L8r