Ok guys sorry but my long hours of searching didnt answer anything for me so i gotta ask some questions from you L28ET gurus. Im buying a L28ET long block that was originally in a automatic car...i have two questions...

1. Is there any differences between a Auto and manual L28ET engine? the owner of the engine told me there is and i need to find out because he didnt know.

2. Since i have a 5spd car, and want to keep it that way im gonna buy the motor without its auto tranny, i know that my NA 5 spd will work but i need to know is a bolt on affair and with the Auto turbo motor what do i do to make it work with my tranny? Does a Clutch just install onto it? Sorry ive never worked with an auto motor before so thats why im so clueless.

Anyway thanks in advance guys! and thank you for all the help so far!

 

the ecu will need to be changed, after that it should just bolt up.

 

Why? The ECU will work fine. The ECU wasn't advanced enough to do anything different.

The bonus is the turbo L28 with auto has an external oil cooler. Be sure to get that system with the engine.

You remove the torque converter and flexplate off the back of the L28 block. Unbolt everything off the back of the crank. Then take your entire clutch and flywheel off your NA block. Bolt it on and you're good.

I'm running a turbo auto engine as well, with the oil cooler and i bought a T5 transmission separate. I had a NA 2+2 so my car already had the 240mm flywheel. Your 2-seater NA will only have a 225mm flywheel but it will work still. If you're planning to run more than stock power you should take this time to find a 240mm flywheel and new clutch kit.

 

Some L28ET autos had a diff cam than the 5speeds: http://www.atlanticz.ca/zclub/techtips/cam/index.htm

 

Thank you guys!

About the ECU and harness...sadly the motor is not coming with one, but I recently luckily sourced both a manual Turbo ecu and a Turbo harness

Bleach: I had no idea about the oil cooler! Is it a tranny oil cooler or its part of the long block? Also while i am at it instead of using my NA clutch and flywheel i am gonna get a aftermarket clutch and flywheel for the turbo motor, i plan on a Fidanza lightweight flywheel and a F1 stage one clutch (i havent researched alot yet may go with a better known clutch) If i get these clutch and flywheel that are intended for the turbo motor with its T-5 tranny will they still work with my N/A tranny?

Thanks again everyone!

 

i believe its an OIL cooler, for like the oil that lubes the motor. screw tranny oil coolers lol. and ic your looking for a stock T3 turbo. veyenel is selling one for 70 bucks, search for his thread about it. and yea the fidanza is a 240mm flywheel and they are all the same size its the friction surface that is bigger or smaller i believe other wise fidanza couldnt lest the flywheel for both NA and TURBO when tehy are the same product. and i would probably get a centerforce dual clutch.

 

I would seriously not recomend a lightweight flywheel and stronger aftermarket clutch!!! Its a waste of money and so much more difficult to drive... .and you're getting a stock turbo? obviously you wont' be in the power range to even need that clutch.

Buy a stock 240mm flywheel and clutch kit. It will work with both transmissions. Nissan or T5

Also, according to that the auto tranny turbo has a bigger cam! The 1982 auto turbo cam matches the non-turbo cam. that's the one I have. P90

 

I've got the P90a head, which I'd imagine was pretty much the same between Auto and 5-speed. I need to really get a 5-speed. The auto is literally the only weak point of my car right now. It leaks fluid too which makes it more of a pain so I gotta fix that. I wish I would have had time and a place to do the swap before I sold my T-5...

 

it doesnt take long. shouldnt have sold it. its all fairly just bolt on.

 

for a 280ZX it is just a bolt in. You just need the proper T5 driveshaft and diff flange from a turbo Z. All of it bolts in.

If you have a coupe then you need a coupe T5 type driveshaft. The 2+2 turbo driveshaft is longer.

 

you see i'm a way for a while and i forget everything i learned... lol

 

well sure, I am not gonna be making alot of power at first, but i will want to in the long run So i figured while everything is out why not upgrade? Ill get a aftermarket clutch but nothing crazy like a stage 4 plus I don't daily the car so the clutch being hard is np for me But performance wise Bleach, what do you think of a lightweight flywheel, does it make a difference? Is it worth it? Oh and my power goal in the long, way off future is 230whp...at least that much. Anyway thanks for the help so far guys you can bet i have more questions when i start getting to work on the car once the motor is finally in my hands (in a month or so) Hope you guys continue to help me out! (dont worry, no noob questions! lol)

 

First you need to understand the reasoning behind the weight of a flywheel. It's mass helps the engine continue rotating. With no mass it wants to slow down very quickly... so with that in mind, how would a light flywheel affect a motor?

#1... it rev's up more quickly

#2... it rev's down more quickly

- Problem with rev'ing down quickly... it can stall the motor.

 

I know about lightweight flywheels...Less rotating mass means less weight for the engine so it'll rev up quicker...last time i checked that was a good thing. Just like how some people remove their power steering and A/C. I never drove my car hard with the A/C on (back when it worked anyway) because i could feel the slight strain on the motor. On a N/A motor its a plus but i know overly light ones are not good for high boost applications. Just wanted to see if i could benefit from one with my planned setup, thats all.

 

it will be harder to get a good rolling start when your sitting facing up a hill, thats the only downside really.

 

Wasn't HeatRave's car doing that? Somebody had mentioned that a couple months ago... like a really bad shimmy when on a hill.

 

EXACTLY!!! and i tried to talk him into selling me his fidanza for cheap, i guess he kept it though i want fidanza..... but he said it was from trying to roll up his curb at teh bottom of his driveway.