Images! Fuel Injectors for unknown engine year 1990 300ZX TT

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
PhysicZ32
Posts: 9
Joined: Sat Mar 09, 2013 12:34 pm
Car: 1990 Z32 2+2 Twin Turbo

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Pictures of my new Z32 2+2 TT. Gotta Question, Had this Z32 for about a month, thought it had compression issue. Found that it had nothing even close to a compression issue. Finally got it to the right guy and he had my issue figured out within an hour. I was hesitating sometimes, ruff idle. Felt like I was loosing horse power when just trying to maintain a speed. Everything seemed great as higher RPS's. But what my bisggest issue was I couldnt install cats and just have them get messed up so anyways turn out that when the previous owner upgraded my 1990 2+2 to TT he swapped out engine, apparently installed Level 4 Turbochargers, Installed a racing clutch and flywheel, and a single intercooler for both the turbos. (Good?, Bad?) also he upgraded the ECM to Z1, I will post a pic. but anyways the mechanic says that while it seemed this guys was taking care of the engine swap nicely he did not upgrade the fuel injects from stock, needless to say 4 & 5 where kinda f***. He had to SHOCK(Big Time) to get the injectos to open. He said Based on what the upgraded ECU was saying and based on the upgrades to the moter that the fuel injectors where getting tore the F back. They all all firing now, but he said I need to replace ASAP, easy right? Well since I havent a clue what year my moter is I dont know that its not that 93 or 94 with the different injectors. I took a few pics of the motor, I hope someone can help cause I want to order the best ones that I will actually use, tonight so I can get them sent here soon. I have so many other questions for you Super Elite Z owners, I feel I know almost nothing. So please help me out. I will post this then edit it to add the pictures.
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Last edited by PhysicZ32 on Sun Apr 07, 2013 6:23 pm, edited 1 time in total.


PhysicZ32
Posts: 9
Joined: Sat Mar 09, 2013 12:34 pm
Car: 1990 Z32 2+2 Twin Turbo

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PhysicZ32
Posts: 9
Joined: Sat Mar 09, 2013 12:34 pm
Car: 1990 Z32 2+2 Twin Turbo

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Is this the PTU that was recalled? I have read the recalled one looks like this. I think this may be the cause of possible minor issues(Or Misfire and problem started because of bad PTU)??????
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Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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Yep, that's the old style. Getchoself a new one from the dealer. It's free.

And if you want to upgrade injectors, you can. You just need to reflash the ECU. What's most likely happening is your car is hitting the max duty cycle of the injector, meaning it's 100% open and couldn't possibly flow any more fuel, so the power drops off.

PhysicZ32
Posts: 9
Joined: Sat Mar 09, 2013 12:34 pm
Car: 1990 Z32 2+2 Twin Turbo

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Yeah, they are the stock injectors that came with the turbo. I still am going to replace them, what would you suggest within means, meaning I would like to get either the Pop charge, or I found a quite nice looking Supercharger
Nissan Electric Turbo Cold Air Intake S ... mo Fan Kit
It looks alot better then the other crappy superchargers I have seen. So your suggestion on first upgrade, after the fuel injection, POP, Super, Something else??? :crazy:

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Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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Whoah, dude. Do you really believe that Cold air intake supercharger thing? That's the oldest gimmick in the book, apart from the "intake vortex fan."

I'd bet if you have an upgraded ECU, you already have a pop charger. You need to figure out what you have on your car before you just go ordering stuff.

PhysicZ32
Posts: 9
Joined: Sat Mar 09, 2013 12:34 pm
Car: 1990 Z32 2+2 Twin Turbo

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Its actually does not have the pop charger/Mechanic showed me it was running stock intake. I am very new to this, so that you for telling me the supercharger thing was s***. Can you tell by the pictures if the motor is 1 90, 91, 92??? Also, what size cc would you suggest for the injector with that turbo and that chip? It has 270cc in now.

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NolimitZ32
Posts: 7042
Joined: Fri Jun 27, 2008 9:07 am
Car: 91 AG2 2+0 TTMT swap/E39 BMW 540i6/E53 4.6is Dinan S3
Location: Houston, TX

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Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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LOL Anton.

Yeah man, just read through that, and it should answer a ton of questions you may have, and even some you don't.


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