[TurboMiata]

I have a 250whp Turbo Miata. While I love the car I need something with 4 seats. I am keeping the Miata, but looking for a cheap 2nd car. I have a friend with a BB DET NX and another with a DE Turbo B12. I love the SR20 and figure a Classic or a NX would be a good fast beater. I plan on going with a DE with a BB manifold and I was going to Source a Good T28 for some good top end and bottom end. I was planing on JWT computer, 370 injectors, and a Cobra MAF. I was going to do a custom front mount. My goal is over 300whp. From what I have heard the T28 that comes with some of the SR20 motors is hard to get over 300whp. That is why I am going to source the turbo my self. I have a turbo coming in for the miata that should get me around 320whp at 16lb and get full boost by 3300 on my stock motor 1.6. I will probably use the same turbo as it uses the same flange as the BB manifold.

My main question is how hard it is to install a SR20DE into a Non SR20 Car such as a Sentra XE or NX1600. I want something light with no options, and the XE and 1600's can be found cheap. If I find a classic or a NX2000 for a good price I will jump on it, but I want to know my options.

Thanks.

 

[Scarpa]

There's a turbo NX for sale in the classified forum.

 

[TurboMiata]

I think I would rather build it. I like the pride in building it, and once you have built it it makes troubleshooting MUCH easier. Plus I plan on taking some time on it to spread the cost over time.

 

[Nick]

You have to change the engine mounts and some other little things like wiring to make it work, but I think just the engine mounts would be the hardest thing about it. Thats all I can think of off the top of my head at the moment.

------------------

92 NX2000, kyb agx, intrax springs, jwt pop,
3a Racing muffler with bonzi tip,
17 " mille miglia mm 112, Yokohama avid h4
ACT clutch on order

 

[SucKit]

The obvious... tranny is different, axles, and ecu...harness you should be able to make work and 2 mounts as stated earlier

 

[Lyn Labahn]

The BB manifold is not the best option for the T28, or anything larger because it places the turbo too close to the block. I would reccomend a pulsar GTi-R manifold if you are persistant about using the T25 flange. If you are willing to step up to a larger flange, there are other options too. Which turbo are you considering using, the HKS GT 2450?

 

[JimR]

Your sense of industry is commendable, but I think it would be worth your trouble to find a real Sentra SE-R and go from there. You stand to save some money and hassle in building up a turbo SR20 car.

If you buy a GA16DE car, you can spend thousands on a 300hp DET setup, only to have a car with rear drum brakes, wimpy seats, and a non-SR20 instrumentation setup. To bring a non-SE-R up to spec, you'll have to raid a real NX2000 or SE-R for a heap of parts, anyway. Of course, that includes the SR20 tranny.

Engine and brakes aside, a Sentra SE-R isn't any heavier than a 1.6L Sentra. The SE-R never had leather seats, power windows, or an automatic transmission (except for a few '93-'94 cars).

The NX2000 was available with power, auto, T-tops, etc, but you might want to pass on the NX altogether - though it has four seats, it's hardly a four passenger car.

A SE-R might be hard to find locally, but looking online and searching out-of-state might turn one up in your general region.

 

[hybrid D E T]

who's your friend with the turbo b12?

 

[TurboMiata]

I understand that I will need to change the ECU, Axles and tranny. I have some sources (salvage yards), that can get me a whole swap. What I want to know is about engine mounts, and wiring from cars wiring harness to motor. I am looking for a NX2000 or a Classic SE-R. I will only get a GA16 car if I find a good enough deal. It will have to be a real good like a few hundred bucks or something. As I said I just wanted to know my options. Seats are not a big deal, Ill put some Sparco seats in or something if they are that bad, or put some SE-R seats in later.

I found out earlier today from my NX friend about the BB manifold puting the turbo too close to the block. Does the GTi-R manifold use a T3 Flange? If so how much do GTiR manifolds go for used. Do they still put the turbo fairly close to the block? What about flipping the manifold?

Thanks for all the help guys. I remember a year ago I was asking similar quesions on the Miata.net forum. 2 Months I had a Miata with 140rwhp turbo kit. Now I am at 250.. Its funny how life works.

 

[TurboMiata]

BTW my friend with the B12 has the following setup.

90 B12 with SE-r Rear braks
JDM SR20DE highport
Sylvia manifold with T3 flange welded on
DeltaGate flange welded on with Delta gate vented to atmosphere
Vortec FMU (until he gets JWT Computer)
NOS fuel pump (NO nos)
Stock injectors, has 370's but ran too rich
5lb of boost
Dynoed 206whp at 5lb but running EXTREMELY lean. Something like 15.5-16 to one on the wideband. Apparently the stock SE-R fuel pump is going out and car will not run higher than 55psi, even with return clamped off.
HK$ intercooler and endtanks
Custom motor mounts
Greddy BOV
COMPLETELY wrong size turbo. Some 20G Mitsu turbo off a bulldozer or somthing. I am bugging the hell out of him to change this.

His name is John....Unfortunatly I can not think of his last name right now. He just moved to New Orleans a couple of months ago. I heard of a Sentra with red top 2.0 motor. I went to meed the guy and was SHOCKED to find it to be a B12. Real nice setup car, except for the damn turbo!!

 

[Lyn Labahn]

The GTi-R Manifold uses the T25 flange. The hotshot, and F-max manifolds use the T3 flange. You could have a T3 flange welded onto the GTi-R manifold if you wanted to. And, as far as I know, you can't flip the manifold over.