ok my main question is this

i wanna rebuild one with a L28 motor and a E88 head

as i do plan on boosting this monster.

however i'm kinda confused as to the emission laws

since i'm mix matching engine parts how would you class this ?

would it still be exempt from emissions ?

or would it follow the emission standards for the head or the block ?

i thought of twm fuel injected kit to convert the engine over.

also how hard would it to over bored the engine to a 3.1L?

i'm really confused about this stuff as i've never done a full engine rebuild but i wanna learn.

i plan on doing this as a project car.

and i just love this body style

CableSrv

As far as smogging it should be exempted. Cheack your local DMV, but here in california if it is older then 1973 it is exempted and egine swaping would not require smogging nor will it change classifications as far as I know.

When you said you were going to boost it, do you mean turbo or supercharging. If your turbo charging, you may want to find a L28zxt engine which is already turbo charged.

I don't know if or haven't heard of people boring the L28 to 3.1L so if you do that please let me know how it goes because it sounds possible.

well i'd prefer to get just the block and rebuild a new engine

with dished pistons

overbored to a 3.1L

new rods

and a diesel crank i think ?

if it's older that 73 ?

well the L28 engine didn't come out till after 73 ?

which means it won't be exempt right?

or have they made a l28 before 73 ?

:eek: sorry I ment 73 and younger. But the engine should be excempt from that. So the L28 engine in a 73 240z would still be smog excempted.:eek:

If any one else knows more please fill free to help out.

this is one mans opinion:

unless you have an unlimited budget, building a proper 3.1 liter z motor is not very practacle. The diesel crank must be really worked over to be light enough to out perform a nicely built up 2.9 liter motor. the diesel crank is very heavy and will rev slowly unless substantially lightened. As far as a head choice i would suggest a P-90a modified to solid lifters, the combustion chamber is a better design ( to eliminate detonation) and this head was used for the factory turbo offering, so if you are thinking turbo its probably a better choice.

You need to ask a local expert about emissions.They are obviously different everywhere.Example,In North Carolina whichever is newer has to subscribe to those laws.So a 73 car with a 85 motor must have 85 emissions.What ever emissions came with the car must stay on the car.Crazy rules.I also have a 1946 chevy truck.It is factory no nothing.I have added brake lights.Each year I pay 15.00 to hold my left arm out the window and do the manual turn signals(remember those from driver ed?)and honk the horn.My tax dollars at work.

wow!

ok well i'm not completly rich but this is going to be a project.

so time is of no essents right now.

but if you think a diesel crank would be not worth the effort then I'd take your word for it.

the p-90a head ?

ok well looks like i'll go look for that head then

how much boost do you think this engine could take ?

before it starts to detonate or blow up ?

There is a website out there somewhere (I know, I've seen it but can't remmebr what is was called) that gave a good write-up on building a 3.1L motor. They also mentioned that do it right would run a few thousand dollars.

As for making a turbo motor, there is a guy in San Antonio's Z-Sport club that right now is building one. I don't believe he's making a 3.1L turbo, but he is getting pretty close to that. I'll see if I can get in contact with him to see what all he is doing to it.

Thank you alot

i'm really glad I fould this site

Here's a link to a guy that a really sweet, beefed up 280ZX turbo motor:

http://members.home.net/drax77/newpage.html

I'm still looking for info on a 3.1L

Check out this thread right here on our own site!

Internet 240z Club > Z-Car Related Stuff > Racing > Meet the new boss, same as the old boss...

You may want to try and get in touch with Dan Baldwin. He's running a 3.1L stroker in his 240. He could at least give you an idea as to what is involved with building up such a motor. The only advice I can give is to hunt down a 280ZX turbo block to start with. It's a little heavier than the regular 280 ZX block and canhandle the added displacement better.

question!

which year 280zx turbo should i look for ?

and what year p-90a head should i look for?

since i'm very new to this any help you can provide i'd appreciate it.