JAyD_917

got past my last problem and have had a few since then and resolved it through searching. I was reading up on billet fuel rails while flushing my radiator today and realized my head was a p90a, the block is a f54(drivers side casting) and my intake is a N47.

Q1)Doesn't the N47 have round exhaust Ports and the p90a is the head from the 80's turbo's and don't?
I'm used to my 83 n/a(which I have for parts so p79 is a option=D) and bought what I thought was a 1979 N/A From a guy who didn't have an honest history on it.
Should I be happy about my newfound engine set up?
Q2)Do I have more potential than I initially thought?
Q3) I was planning to swap a turbo, is that unnecessary now?
I'm so confused and embarrassed I didn't check this sooner. How is my ECU handling this?

NismoPick

I'm a bit confused about your confusion...

Intake or exhaust??? All intake ports are round. You said you have an N47 intake... not sure why you are asking about N47 exhaust... If you meant the cylinder head: P90's have rectangle exhaust ports, P79's have round exhaust ports, N47's have diamond ports. Click n read: Datsun L-series cylinder head timeline

?

??? I don't know what you initially thought....

??? Was the turbo necessary before this discovery? (I still don't know what you discovered.)

Still not sure what you are confused about... Help me help you.

JAyD_917

I meant intake, not exhaust ports lol.. I just found out that my 79 280zx has a turbo engine(head and block) with no turbo intake, exhaust, manifolds. Nada.. "Did the p90a and f54 with a n47 jntake come stock in a 1979 280zx N/A?c Thats what I was confused about because I knew it didnt.
The link says the n47 intake came with the car. And the p90a came out of an 1983 turbo Z. I didnt know I had the p90a.. whatsoever.
Q1) How do I go about turboing from here? There is no turbo or turbo counterparts.
Q2)what ecu am I likely on with this set up than?
Q3) I discovered that I'm not on a stock 79 n/a engine. I've got a P90a with an F54(i'm assuming flat tops.) Should I be happy about this in comparison to what I thought I had in regards to my plans of eventually turboing(my plans were to initially swap in a turbo engine, which I think I actually have)
Did I clear everything up? Sorry for making it extra complicated

NismoPick

Click:
https://www.zdriver.com/forums/280zx...ts-list-36821/

I'm not sure what you are asking.

You can "turbo" any engine. Reliability is dependent on what parts you use, and your mechanical knowledge / skills. I suggest you start with reading a few good books:

JAyD_917

NismoPick, thank you for the first link!!

I can rebuild an L28-_- lol
I know any engine can be turboed, but ideally turboing an N/A isn't the best route financially in comparison to dropping an L28et in.
I found out i have the block and head from the l28et, so i just wanted to know if the prior owner simplified what i was planning to do prospectively with swapping an l28et in, since it doesn't have all the turbo parts or is it going to be a ClusterF*ck?

Dont worry about the ECU question, stupid question I guess. I assumed since he put the 83 turbo engine in there he had to use a turbo ecu regardless as to if the engine is turbo'd yet, but i read up on it and i guess its not so. I'm likely still on the N/A 79 ecu.

JAyD_917

I also started reading Skittles MS writeup. when i bought it, it had an inter cooler on the car already, right in front of the radiator, really thin though. so would option #2(with a walboro 255, MS, and headers) from your posted thread be a "cheap scape i don't care if i blow my engine route" being that i have the p90a and f54 or is that ideally what i should be doing?

NismoPick

Got any pics of your engine bay?

JAyD_917

Sorry for the delay, things have become overwhelming with work school and the z being my DD lol.
There's the f54 casting on the drivers side, the p90a casting, you can barely see the radiator and "intercooler?"(It doesnt look like the intercoolers I'm used too, but it isn't part of the radiator nor does my 83 N/A hav one or any N/A I've seen.)I also grabbed a pic of the injectors.

NismoPick

That's not an intercooler... it's the a/c condensor.

JAyD_917

Ok, well don't I feel dumb.=D my 83 had no ac. I need to Change the hoses under the dash. Only the heat works by my passengers feet. Irrelevant though. So what's going on with my engine set up?

NismoPick

Looks like someone mix-n-matched a bunch of parts... it drives right? Not sure what else you are asking.

If you want to turbocharge it, make a list of needed parts, and do it.

JAyD_917

Luckily it does drive, except for the problem in my other post and a knocking in the engine now.(started a few days ago after driving about 200 miles for work.) It has hydraulic lifters I'm assuming so I'm thinking maybe it's the injectors. The most sounds near the intake/top. I have not removed the valve cover yet because I have a Felpro gasket and I can't adjust the valves so i wasnt sure if i was just wasting my time checking under there, and would have to replace the gasket for nothing. haven't gotten a great stethoscope yet, just used a long screwdriver to try and the detect where the noise was.
After I get pass the knocking and wiring though, will it be feasible to turbo what's there or Are you thinking I'm going to need a rebuild for me to not blow my engine?

SHADY280

i think its actually a turbo motor that someone swapped in with the cars stock manifolds. do a compression test and the numbers should give a tad bit more insight as to whats inside.

JAyD_917

Thanks, that's whats next.. a shop doing it is more than me buying the compression tester. Ill spring for them finally since stuffs getting serious lol. truthfully, I should've had one sooner.
I dont understand why he would done that though.. looking under the dash for the wiper problem today. I also found a viper alarm system that isn't fully connected. and when i connect what little wiring is left for it, it ticks. it also looks like its connected to an ignition shut off/shut on switch to start it thats down by my feet. He never mentioned it. Maybe he didnt know, I dont know. The title had a lien from he shop he worked at.

SHADY280

the original engine probably had a problem so they went down to the wreckers and picked up the only available engine. figure what the heck and chucked it in the car so it would at least drive. without the turbo on that motor it prolly is a bit of a slug with the low turbo compression.

JAyD_917

A bit. I feel like after 60-70mph, I'm pretty much floored getting up to 100. You can tell shes craving more=D