Infiniti G20 DE-to-DET Swap - Nissan Forum
SR-Series Engines (DE/VE) Engine Discussion: G20, 91-94 Sentra SE-R, NX2K, 95-98 200SX SE-R, 98-01 Sentra SE

 
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post #1 of 5 Old Dec 15th, 2004, 02:37 AM Thread Starter
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Infiniti G20 DE-to-DET Swap

My mom has a 1992 Infiniti G20 that I may be able to buy from her if I end up taking a year off from college to work. It's a great car mechanically -- smooth-shifting tranny, great handling, the clutch works well at the moment, etc. The brakes were redone a while ago and the muffler needs work but it isn't that big a deal. The only problem is that the original engine has upwards of 160,000 miles on it and I'm betting it will need some work soon. It also has a slow oil leak. Not only that, but the car has always been pretty underpowered; 140 HP isn't enough for the G20. So I figure that if I buy the car, I'll buy an SR20DET and get my friend who's mechanically inclined to help me with an engine swap. -- that way it has a newish engine without any problems, and it also has the benefit of 205 HP and 200 lb/ft of torque on tap.

So... I'm obviously in the research phase here, but I was wondering a couple of things:
  1. What parts do I need? I see a lot of SR20DET engines that say they don't include an ECU or wiring harness. Can I use the same wiring harness (I assume the ECU would need to be replaced)?
  2. Will I need to replace any other G20 parts (e.g. clutch, tranny, etc.) to deal with the extra power put out by the DET?
  3. Do I need any parts not currently in the G20, like an intercooler?
  4. Will it just be a simple swap, or will I need stuff like a different engine mount?
  5. Are there any good tutorials on the swap? I searched on Google, but I couldn't find anything too in-depth.
  6. Once I do the swap, I'm worried about hitting the speed limiter; what is the G20 limited to, and what would be involved in removing the limiter?

This swap would be really awesome if I can pull it off... I'm really excited about having an actual fast G20. Thanks a lot, guys.
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post #2 of 5 Old Dec 15th, 2004, 03:24 PM
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theres a whole swap site for a guy with a g20, he put a gtir engine in it, u will need a better clutch for sure and the trannies are week but there isnt much u can do about that except have them welded a bit just know that u will hae to get it rebuilt once or twice when u near 300 hp especially if u love to bang out gears like me chirpin every gear, your best bet is to find a u12, u13 or gtir "front clip" comes with everything u need from dash forward cans ometimes find them for pretty cheap try the want adds on se-r.net or ebay anyway heres that site

http://www.g20.net/forum/showthread....ight=gtir+swap
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post #3 of 5 Old Dec 15th, 2004, 03:51 PM Thread Starter
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Originally Posted by Slacky
theres a whole swap site for a guy with a g20, he put a gtir engine in it, u will need a better clutch for sure and the trannies are week but there isnt much u can do about that except have them welded a bit just know that u will hae to get it rebuilt once or twice when u near 300 hp especially if u love to bang out gears like me chirpin every gear, your best bet is to find a u12, u13 or gtir "front clip" comes with everything u need from dash forward cans ometimes find them for pretty cheap try the want adds on se-r.net or ebay anyway heres that site

http://www.g20.net/forum/showthread....ight=gtir+swap
I think I want to avoid the whole GTiR business -- there's a little too much modifying there for me (although an AWD G20 would be awesome, especially because this car has had problems making it up the hill at the beginning of our subdevelopment in the snow...). I get the feeling that a "garden-variety" DET would work best, because it would be less expensive, because 205 HP is plenty for me, because it seems like it would be easier (please, somebody correct me if I'm wrong), because I'm afraid I would screw something up in installation, and because one of the main objectives here is to have a car that's less likely to break, not more likely to break. I would like the tranny and clutch to not be too much more likely to fail under spirited but not abusive use than if the SR20DE motor were still in there, leaking oil all over the garage floor.

One of the big issues here is that my mom is a big hardass. I'm going to have plenty of trouble convincing her to give up the car, even with monetary incentives; I will have even more trouble having her not kill me when I swap out the engine. If I tell her that it's like the car only has 45,000 miles on it all over again, she'll be placated somewhat, and I'm pretty sure she won't mind the extra power when her new Subaru Legacy is in for the 15,000 mile service; if the clutch or tranny fails six months later, she will be unspeakably angry.

Sorry for the digression... does anybody have info on the swap to a standard DET? If all else fails, I will use those instructions, but I'm going to be very sad if my car stops working, especially since I plan to use it as a daily driver while I take a semester off and after I graduate.

Also, I'd really like to know if this deal is to be trusted:

http://forum.completekustoms.com/index.php?a=forum&f=5
http://cgi.ebay.com/ebaymotors/ws/eB...941661394&rd=1

It's really tempting as both the headquarters and warehouse are 15-25 minutes from my house and thus I would be dealing with a local company.
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post #4 of 5 Old Dec 15th, 2004, 04:01 PM
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ok, the only difference technically for the gtir install is that there is a section of extra support that would have to be trimmed other than that its the same install as any other sr20det swap, it really is a better engine because it comes witha bigger turbo and injectors but thats all really.... so the site can still be used, the swap is relively easy im preppin gto do a gtir swap on my 91 se-r the day after tommoryc cus my shed is getting delivered which mean smy garage will be free of clutter, its just like puttin a regular sr20 in except u have to change over the computer and wire harness, and as for your concern with the tranny it has like u said upwards of 160,000 so with a power increase and a eager need for speed boy drivin with a brand new sense of power i dont think its goin to last to long o and btw the origional tranny would bolt to the gtir aswell as any other sr20 im pretty sure even the new qr25 spec v 6 speed trannys bolt to it, that'd be a neat upgrade
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post #5 of 5 Old Dec 17th, 2004, 04:45 AM
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Cryo-treating the tranny would be at least a good preventive mod, if maybe not wholly worth it. If you really want a high HP car, I recommend carrying an extra tranny with you everytime, or at least not using the power too often (turn down the boost for street use and try to launch as little as possible, and hope you have the kind of power that you don't need a act xp clutch for)

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