1991 Eclipse

DaGGer · #1 04-15-2005, 07:41 PM

now i'm looking for a car to drive around because mine just shit the bed...now i found a 1991 Mitsubishi Eclipse 5 speed 1.8L...now i want to buy it and get a 2.0L engine and turbo charge it and drop it in there...is this possible...would this be a good car...i mean how does everyone here like driving there car

91 Eclipse · #2 04-15-2005, 08:14 PM

I have a 91 eclipse and personally love it because of the fact that it looks good (not as good as 2g) and has a awesome engine in it. a 4G63 is so fun to mess around with.

DaGGer · #3 04-15-2005, 08:48 PM

well i was looking around i see that the 1.8 is a very strong engine...now would it be a good idea to say turbo this engine...say i get another 1.8 engine and build it up outside of this car and turbo it and then drop it into the car...i mean it will be the same car i just have to do a lot of custom work to it...but i have seen it done..do some internals and then turbo it and run some good amount of psi and i would have a pretty nice and quick car...not bad for a daily driver...but i really would much rather perfer the 5.0 that i'm getting...its a project vehicale so i need a daily driver thats good on gas because this won't....but anyways...say this is probably a good idea or not...i mean a 1.8 turbo would pretty nice

93Laser · #4 04-16-2005, 02:31 AM

you CAN turbo a 1.8 but only a few people have done it, read up on dsmtuners.com it cost like $1,000 to turbo the 1.8 so u could just do the 2.0T swap for that.

DaGGer · #5 04-16-2005, 06:45 AM

well i mean...if i get the 1.8 i could grab parts from the 2.0T couldn't i...i just need to change a few of the internals so it can handle the higher boost...that way i can rebuild and build up the engine at the same time...it would be a good engine project i think...plus i have heard that the 2.0T swap and 2.0 N/A swap isn't really worth it...so thats why i was thinking of turboing the 1.8

91 Eclipse · #6 04-16-2005, 09:01 AM

no the 1.8 has 92 hp and the 2.0 has 135. I would get the 2.0T and swap it in a build it up or you can buy a 2.0 NT and build it up outside the car.

DaGGer · #7 04-16-2005, 04:01 PM

ok so turbing the 1.8 is even harder than doing the swap...i wouldn't mind doing the 2.0 swap...but should i get the 2.0T or go with the 2.0 N/A and turbo that...

gthompson97 · #8 04-16-2005, 05:56 PM

2.0T, it's already set up for a turbo.

DaGGer · #9 04-16-2005, 06:40 PM

now the question is...how hard is the swap really...i mean i have looked around...and damn...all that i can see is sell that car and buy a turbo and all this other shit...well if i could i would..but thats the reason i have this car...now i want to find a document that shows or well tells me how to do the swap and how hard it really is

93Laser · #10 04-17-2005, 09:50 PM

well the hardest part is connecting everything back together...unpluging everything and unbolting and lifting it out is easy...putting it back in and reconnecting everything is the hard part...on ur basic eng swap....but for a 1.8 to 2.0T i have no clue.

91 Eclipse · #11 04-17-2005, 09:56 PM

i did my engine swap in a weekend with very little experience. I did a 2.0 NT to a 2.0 NT cause of money issues.

DaGGer · #12 04-17-2005, 10:00 PM

well this is going to be harder i think because the 1.8 is different from the 2.0 n/a or Turbo

gthompson97 · #13 04-17-2005, 11:14 PM

an engine "replacement" is way easier than a swap. going from one model to another requires alot more parts. you'll need a new ecu and probably have to re-work some of the wiring harnesses and shit. it's not that tough, it's just time consuming.

i got this off the 1000 AAQ - Major Conversions site for DSM's.

Has anybody ever converted a non-turbo [DSM] to a turbo [DSM]?
What is required to convert a non-turbo [DSM] to a turbo [DSM]?
Has anybody ever converted a 1.8L NT to a 2.0L NT?

Most people who research this topic come to the conclusion that it is cheaper to sell the NT and purchase a turbocharged DSM, rather than attempt to convert the NT to turbocharged form. Read all about it here and here. It has been pointed out that the difference between a turbo FWD and a non-turbo FWD 1G DSM was roughly $1000 in 1998 - suffice it to say that the conversion will be significantly more than that, regardless of the method chosen.

Weapon*R has a bolt-on turbo kit for NT 2G DSMs. The cost was $4500 last time anybody bothered to price it. At one time, Extreme Motorsports offered a similar kit that ran for only $3500, and included a 14B turbo, BOV, fuel pump, sidemount intercooler, exhaust manifold, downpipe, MBC and boost gauge in one bolt-on kit. More recently, Hahn Racecraft has taken up the challenge with their bolt-on 2G kits costing between $2500 and $3500. Note that these kits will not make your NT into a factory-turbo DSM; since the compression ratios are still different, the boost ranges are greatly restricted compared to OEM turbo engines.

Some people have had better luck converting 1.8L DSMs to 2.0L (non-turbo) engines. Apparantly these engines are rather similar, and since there are no turbo/non-turbo issues the conversion is fairly easy - 'fairly' being of course a very subjective term. At the very least, the head and camshafts will need to be changed from SOHC to DOHC.

Note that the above details only change a non-turbo to a non-turbo. A 1.8L to turbo conversion is likely to be at least as difficult as a 2.0 NT to turbo conversion, if not more so, since most of the above changes would have to be made prior to starting the turbo conversion.

Some owners might think that performing an engine "swap" rather than a "conversion" would make things easier. This is not so. The engine control units (ECUs) for the NT and T engines are different, as are the engine/ECU wiring harnesses. Therefore, to properly swap in a turbo engine into a non-turbo chassis, the ECU and wiring harness must be replaced with the turbo versions.

Additionally, an engine swap by itself is no trivial task, especially if the replacement engine requires work prior to installation. The FWD and AWD flywheels are different, and there may be other differences that prevent a turbo motor from matching up to a non-turbo chassis or driveline. While it is theoretically possible, most people would not find it worth the effort.

Owners of 'converted' non-turbos may find the insurance to be less than a factory turbo car. This is not a guarantee, however, especially if the insurance company learns about the conversion.

Those seriously interested in this conversion will find the article "Do It Yourself Turbocharging" from Overboost.com to be an interesting read.

DaGGer · #14 04-17-2005, 11:24 PM

well i wouldn't mind going from 1.8 N/A to 2.0 N/A...i mean that is atleast a 42 HP increase and not as difficult as doing the 2.0T swap...now i was reading and converting the 1.8 to 2.0...how so...by just changing it from SOHC to DOHC....i would think this wouldn't really change very much other than the head...but does it acually change the engine from 1.8 to 2.0 that easy..i mean not easy but easy compaired to the rest...if so...what do i need...the top end parts of the engine...that wouldn't be so hard

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