[parttime]

while working on a turbo 300zx i noticed the motor is almost the same as the one in my frontier other than the bore size (vg30e<vg33e) and some other minor things. This got me thinking of my next build... Ive done some research but there isnt a whole lot of info on this. I found one person who took all the turbo parts from the zx and bolted them up to a vg33 but they put this motor back into a z not a frontier, So i know its possible to get the motor running and everything. Im pretty sure they used the ecu for the 300zx not the vg33e and one of my questions is will the computer be able to handle the .3 larger displacement? And this is a cali truck so when i get this smogged the computer wouldn't match my vin# correct? could i use the ecu in my truck has already or would it not run correctly when it sees boost? How about a supercharged ecu with some sort of piggy back tuner.

Ive got about 90% of what i need figured out for this build except what to do for the ecu, so im just looking for some opinions on how i can keep this running in optimal a/f ranges etc. and keeping it legal in cali which is always a pain. this is not going to be a 500+hp truck i only plan on running about 8-10psi and maybe a small sidemount i/c

* would standalone be possible?

 

[Scott Hutch]

Standalone is always possible but always a pita to install. The z computer should be fine with a tune after the install

anyways do it! it'll be awesome!

 

[johnwr1983]

From working with 240's a lot in the past and studying tons of fuel maps, etc. I don't think that the .3l of displacement makes any real difference in the ECU. I'd be more concerned about the injector size and MAF. I know Z32's are 370cc. Not sure about Frontiers. I do know that the MAF and Injectors directly relate to one another on a 240sx. The computer thinks it's flowing a certain amount of air, or pumping so much fuel, and if your injectors or MAF readings are different and you could be WAY off.

For example with the stock KA24DE ECU. The N60 MAF (maxima, and others) reads about 30% more airflow. And SR20DET injectors pump about 30% more fuel. Without the MAF sensor you'd run extremely rich, and without the bigger injectors you'd run lean. The computer itself doesn't know how it's pumping 30% more.

So Find out about the MAF differences, and the fuel injector differences. If they are both 370cc, and the MAF are the same, then I say go for it! Actually, I say go for it anyways! Turbo's FTW! (even though I have a S/C lol)

 

[parttime]

The other person i was talking about who did this used the zx manifold & injectors but they were also using the zx computer. I know in California you cant swap older engines into newer vehicles or swap from car to truck and vise versa but does the same go for ecu? If not i think that's what im going to do also, then get ahold of nistune and see if they have any options for me if i decide to turn up the boost and swap injectors which im sure will happen eventually as it always does with turbocharged vehicles

A turbo charged 1st gen with 32's, a total chaos front end, and some deavers out back would be awesome but im only 18 and funds are a little limited so this is not gonna be done next month or anything but 1-2 years sounds realistic to me