Weight of Engine

[Sulley]

So I've searched the internet and haven't been able to find the answer but I'm trying to find out how much the motor weighs in the Delorean? Curious the difference between the weight of it and an aluminum LS4?

[mark w]

330 lbs with intake, no accessories and no transmission/starter.

[Sulley]

An LS4 is showing 478 lbs so it's quite a bit more.

[Josh]

There is approximately 70lbs added to the car with one of our swaps (utilizing a LS4 and stock 5 speed transaxle).

The LS4 engine itself as a longblock weighs 345lbs, the 478 figure would consider the weight of the accessories, intake, headers, starter, flywheel, etc.

[MrChocky]

And for completeness, since I had trouble finding the answers to this first time around, the manual transmission is 112-115lbs (depending upon who you ask) - as noted here:

https://dmctalk.org/showthread.php?18493-5-speed-box-weight

The auto is "It's around 150 lbs without oil or torque converter." according to Mr T, which seems right. The TC is surely another 20lbs:

https://dmctalk.org/showthread.php?9286-Transmission-Weight

Which as I'm sure plenty of people realize, pushing the 1/4 ton first setting on a Harbor freight shop crane if you lift both.

[Sulley]

There is approximately 70lbs added to the car with one of our swaps (utilizing a LS4 and stock 5 speed transaxle).

The LS4 engine itself as a longblock weighs 345lbs, the 478 figure would consider the weight of the accessories, intake, headers, starter, flywheel, etc.

Hey Josh I know you are the most knowledgable on this topic for sure! I'm seeing information on the interwebs that a dry no accessory engine is 478. What are your thoughts?

http://www.gmtuners.com/LS4/

[Josh]

Hey Josh I know you are the most knowledgable on this topic for sure! I'm seeing information on the interwebs that a dry no accessory engine is 478. What are your thoughts?

http://www.gmtuners.com/LS4/

I weighed this one myself so that is all I can definitively comment on.

[David T]

It isn't "just" the weight. Where it is positioned in the car makes a lot of difference too. Behind the rear wheels is not an optimum position because it increases the polar moment and angular momentum meaning if you lose traction on the rear wheels the back will tend to swing more and faster when there is more weight behind the rear wheels. It can happen so quickly and go past the point of no return that the driver will not be able to correct for it and you will spin out. One reason for the asymmetric tire sizing front to rear. Lotus designers gave the Delorean a bigger footprint for more traction to avoid this. VW's and Porches also have this objectionable trait being rear engined too. With any engine swap you also must consider increasing all of the ancillary systems too like cooling (a more powerful motor will generate more heat that must be absorbed and dissipated by the cooling system). That increases weight too.

[Sulley]

I weighed this one myself so that is all I can definitively comment on.

Well that is pretty definitive! lol

[powerline84]

69234

Ecoboost Swap .
2740.

[Sulley]

69234

Ecoboost Swap .
2740.

So the entire car is 2,740 lbs? I think the original is 2,718 so basically no change which is good. How much does the Ecoboost motor weigh? Does it mate to the original gearbox?

[powerline84]

Origional is not that light . Here's a road and track article from 82. Also when I weighed my car stock it was 3100lbs.


Torque on this motor would eat a stock trans unless you never actually drove the car hard.


I used the Porsche g96 which is heavier but then the engine is lighter. If I remember my setup is like 40 or 60 lbs lighter.

But the big benefit is my engine sits very close to the firewall and has way more room from the crank to the rear frame. About 8 inches. The whole setup is much more balanced. And you can really feel the difference when you drive it .

354 hp wheel. 329ft/lbs wheel. 24 psi boost..
69236

[powerline84]

The Ecoboost is nasty.

This was my 1st and only attempt at a 0 to 60.

It was sloppy

Spun off line ...Rev limiter sloppy shift to 2nd. Rev limiter to 3rd.

She's got more in her.

https://fb.watch/gXApyfzdsI/

[Sulley]

Are you selling kits or was this just for your personal car/project?

[powerline84]

I am selling kits. But this is my personal car.

https://m.facebook.com/story.php?story_fbid=pfbid026MRmy7PZ7H1CuQXAqu3p5e jcr9aovQkzDBaYnKDEVEWuX8qKchpESrE4DDsSW4W3l&id=100057131693329&mibextid=Nif5oz

[Sulley]

Where is the pricing for the kits?

[powerline84]

The last link above should show it