You reused the block with the detonated pistons? That doesn't sound too good. How is all your clearances looking? It doesn't sound like it'll run too well...or last too long. I would just got find a quality used VG30ET. They aren't that hard to come by, and you can find them that are much cleaner, and lower mileage...and in many cases, under 100k miles.

S

 

i used the na block

 

a lil eye-candy i got for all you fools that doubted the heat come taste somma' dis' meat!!





here is a pic of the fan it fits but i had to take the other one off tho



turbo and motor mount pic



here is a pic of the bcdd block off plate i custom made



still need the exaust downpipe does anyone have any suggestions to where to get one made at or who could weld the metal for cheap

 

Run yet? You're probably going to need a exhaust shop to custom make it for you.

S

 

i know but i figured a cheap way to do it by grinding the plate that goes to the turbo flat and bolting a plate to it with the welded exaust pipe and yes it does run but not for too long without the o2 sensor

 

For the ECU, you can get a Romulator for your Maxima ECU and flash a Tuned 300ZX fuel map into it. I have a friend with one on a Turbo Z31, running 16 psi, stock internals. He's gunna burn a ROM chip for my maxima ECU, to run an optimized fuel map for 12 PSI, with Water/Methanol Injection.

On a Z31, its about $150 for a downpipe at an exhaust shop, most can make these for you, if they have a mandrel bender, i dont immagine it would be too much more for the maxima.

I love your intercooler setup, i was thinking the same thing with my car. Im gunna pull a DSM intercooler off at the junk yard and see how it will work on my max, as well as a Z31 hood scoop.

What did you do with the fuel system? stock max injectors? I have the whole stock Z31-T Fuel system. I have another set of Z31T injectors if you need them, i believe they are 100 CC's higher than the Maxima's injectors.

Very nice work. Your car gives me more inspiration to finish mine, but im still waiting on parts. Good luck with the Tuebo Build!

 

Nice lookin setup E-Dog! Another turbo Max ftw!

 

Good job. I do suggest you put some form of padding between the turbo and the motor mount though. The turbo won't appreciate being smacked whenever your motor flexes.

neo - a DSM intercooler is a great choice if you can get it to fit. They cool excellent and are actually considered upgrades to many other stock intercoolers in older turbo cars.

 

well the guy at the weld shop wanted 200 buxs just to weld the metal together but the way im going seems a lot better and cheeper also im running the z31t injectors


as for the dsm intercooler it has small openings and outlets maybee 1.5-2.0 inches not shure tho and the piping work will be funky depending on where you put it as for the ppiping i think that the sabb 900 with the 1.6 fwd drive with the red plate and the large front mount intercooler would have the pipes for that application might wanna scrounge for some volvos as well

 

My friend thats helping me with my turbo project, has a FMIC from a Volvo or a sabb ( i forgot, but i know its some euro car) Its about 2 feet long, 8 inches high, and 1.5 inches thick, the input and output are on the same side. I was thinking about this on the 2nd gens, but I can't figure anyplace to run the tubing.. any ideas? I think this would only fit if you removed the AC condensor, which I am doing. My friend also has a second SMIC for an S14 Silvia (jspec SR20DET), that might work better than the DSM SMIC, but its not at thick as the DSM IC.

 

the s14 intercooler would look cool with the kiliminari front bumper itl give it that custom look, i was thinking about it but i dont think that there is enough room on the drivers side front of the wheel well to mount it, i think that the best way to do it is the way i did its deffinately the cheepest otherwise i think that youll have to cut up your front radiator support plate, then headlamp troubles, relocating the drier and the ac if yo havent donre it already, its cramped in there but you wont kno until you lower the motor in there then you ll see what all the trouble is about


btw i can get the exaust adapter made for 120.00 shipped unless you find somewhere cheeper

 

Yeah, I think its near impossible for the FMIC setup, no where to run the tubing, SMIC would be really tough. That huge front subframe bumper on the 2nd gens kill about any idea for a FM or SM intercooler. I've allready ripped out the AC pump, I dont want to keep the A/C. It will free up at least 1 or 2 HP. I still need to rip out the condenser, but I will keep experimenting on the FMIC idea. It would be no problem if the car was a full out race car, just remove the headlight and run tubing there, and make an air intake for the turbo, But i wanta keep my lights, and keep it legal.

Im trying to improve my fiberglassing skills, once I finish the foam molding for my Z31 front bumper, I might make one for my max. If i did that, I could buldge out the front bumper on the bottom to make room for an FMIC.

$120 is a DAMN good deal!! go for it, I dont think i could get it made for cheaper. well i could If i had dimensions, and time; I have access to all the tools i'd need, but i have barely any time now days.

What did you do with your A/C system? I've ran into a problem with removing my A/C pump. I have no where to hook the Alternator to..

 

i took out the compressor, drier, reciever, all of that **** even the stuff in the car to male it look like it came with no ac at all and ran one belt to all of the accesories im usin the 4 strand belt (the smaller of the 2) and a peice of the larger tensioner "j " bracket i got a pic around here somewheres, cant remember what belt it is ill look and post up the number, ill get the peice on saturday and take pics and fitment i went 2.5 all the way to the cat hope to finish her up with 3 inch al the way out the back

 

If your exhaust elbow is just plain wrong, you might want to try the 280zx turbo part because it has the wastegate separate from the elbow.

It's a lot easier to make a down pipe for it and you might not need the elbow.

I did this on a first generation maxima because both the 280zx and 300zx elbows both it the steering shaft.

 

Wow, That looks very nice! Interior looks really clean, Like the Carbon Fiber.

I think I see what your talkin about with the pulleys and belt. Im gunna try the pulley's from a Z31, might work, and with that setup its easy to remove the A/C pump.

When will she be running?

 

got the exaust elbow in today so i guess it will be rinnin tomorrow ill take a pic of my pulley setup and exaust elbow i did it the cheap way instead of weldint that cast steel its an interesting approach

 

heres the elbow updater interior pics and the pulley setup

 

 

Awsome. Thanks for the pic of the pulley's, that gives me a good idea at what i need to do. Get it runnin yet? Nice CF peices, gives it a really sporty look.

 

Running yet?

 

mmm looks nice

 

yeah but kinda rough i think that i need turbo sparkplugs the ones in the old motor were shot to he11 also any home tuning remedies that you think i should try it might need some and i really dont wanna go to any tuning shop for like 120 an hour but it might be worth it

 

There is no such thing as "turbo plugs". What you should do is get 1 or 2 step colder plugs. Better start learning out to tune.

S

 

There is a certain gap for the plugs that run good on a VG. I will have to call my Z friend and find what that gap is. You can set the gap with a spark plug gapper tool, or Feeler gages and pliers, just be careful.
My friend runs stock NGK's gapped for the turbo engine, he has to do this, or else it will run very rough, so i bet thats your problem.

To tune, you can do what im doing, and many Z people have done, use a Romulator to hook up to your ECU, and tune that way. You can easily find a tune to suit your setup on the Z fourms, then flash your ECU with that. The computer tune for the VG's is pertty basic, just Fuel maps and ignition timing.

A romulator is $150 to $200, one of the most affordable methods of tuning.

 

y didnt you convert to 5 speed while you were at it? looks like a gret set up for home made!

 

as for converting to five speed im gonna wait till the automatic dies then ill have a reason to

ok now i gots problems

started it up and ran some codes the ecu told me that i had


G R
GG RR
GGG RRR
GGGG RRRR
GGGGG RRRRR

now i know that one is the crank angle sensor and the other is the feul pump just wondering what was the other three

also whatl happen if i ran the maxima ecu with the turbo, injectors, and turbo heads i woud think that it would run the same since everything compensates for itsself geettin a lotta ideals now also thinkin about goin 5 lug with the 300zx z32 calipers i have laying around, awwh man i need help!

 

IIRC code 44 is all good for 85-86 ECU's, and 55 is all good for 87-88 ECU's. I think something is not kosher with the codes you got, I don't think code 33 exist...but it's been a while since I've looked over the codes. I think your car is also running in open loop as well.

2nd gen Automatic = suck so much ***, gays guys get jealous
5-speed = pwns yer azz

S

 

The Maxima ECU does not compensate for the bigger injectors you now undoubtedly have.

As for the spark plugs, the rule is that for every 50hp gain you should go one step colder for plugs. I don't recall if you swapped the motor or not but if you did, the stock plugs for that motor should work.

As for the auto trans, you can do a lot with it if you want. A lot of people have no idea what kind of potential an auto trans has in terms of drag racing. If this is only going to be a street-driven car though (or autox), a manual trans would not be a bad decision.

 

ok then thanks for the info but what does it mean to be running in open loop

as for the plugs im using the stock maxima ngk v power plugs havent got to the store to get the 300zx ones yet ill do that tomorrow

 

how are things going with the max? Get it fully runnin yet? Once you do, you need to get a video of it, I wanta see that beast run.

 

naah i got some bills to pay i think that im gonna try runnin it with the maxima ecu and see what happens

because if you think about it all i did was swap heads, pistions, add a turbo i, injectors, manifilds so it should run like a turboed maxima ill try it this week and see what i get...

if not then ill think that ill need to get a earlier ecu like a 85-86 turbo auto

 

Im working on a modified ECU rom for the Maxima ECU, to compensate for boost and the larger injectors, plus some cool stuff like cutting off the speed limiter, and raising rev limiter.

What year did your injectors come from? i believe 84 - 86 turbo Z31 had low resistance injectors, and 87+ had higher resistance.. I hope you have the low resistance injectors, because they will not work without the matching ECU. Im not sure if the injectors on the max changed too, but im trying to track down info about teh mod.

If i suceed on this ECU mod, I can burn you a chip with the new tune on it. Or I can burn a chip for a stock VG30ET.

If the ECU is un-moddable, you could probably use a 3rd gen VG ECU. This has been done on Z's, so why not Max's?

 

The big thing to understand here is that your stock ECU does not contain the correct fuel maps for the larger injectors AND the turbo you have. I would not run the stock ECU with your new upgrades. If Neo can map a new ECU for you that would be the route I would take.

 

ayyyy thanks for the info on the injectors that is awsome i didnt know anything about that thats prolly why its acting the way it is so ill get a different set of injectors throw those in and see what happens

awwwh man you learn sometin new everyday i tell ya


about the ecu sounds good to me just keep me posted

 

Well, you have to make sure the engine is receiving the proper amount of fuel at WOT. If it doesn't, you can kiss that motor goodbye. That's the thing about the retune on the ECU; it would be able to compensate the fuel map in order to provide only small amounts of fuel at idle while completely opening the injectors at WOT. Right now I bet even at idle too much fuel is being dumped into the engine. If you swapped the stock injectors back in it would help at idle, but at WOT you'd be getting knock counts in the thousands.

Maybe you can somehow adjust the fuel pressure so you wouldn't be running so rich all around. You could install a fuel pressure regulator and install it in-line with your fuel line.

 

Yea throw parts at it, that'll help.

Learn what different things mean. Like high impedance injectors and low impedance injectors are, and then you wouldn't blow up your engine like the owner of the VG30ET did.

~Alex

 

I agree with Alex, but I don't just say learn just injectors. You need to learn to tune period or spend the money and have somebody tune it for you at least. Just cobbling it together and hoping it works won't do you much good.

That being said, what gauges you have? You should at least have a boost/vac and egt gauge. Probably also should look at fuel pressure gauge as well.

 

For the ECU tune, you will need to find an 87.5+ Z31 N/A ECU. I can look in my junkyard and see if I have any down here. This will work with low impedance injectors. Im still not sure what the maxima's injectors are, i could probably measure the resistance and see. With this other ECU you will probably need a different O2 sensor.

as far as gauges go, like maximase86 said, you should get a boost gauge, but I think an essential for turbo cars is a Wideband O2 guage/sensor, expensive, but it's worth saving your engine.

 

i have that ecu

as for the bose guage i wanna get one of of a s14 or a skyline that has the nismo emblem on it but on ebay JHOT wants nearly 200 bux for his i guess origionality is a bit pricey...