JDM
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You are currently reading a thread in /o/ - Auto
If JDM engines are so good, why do they get LS swapped?
price/performance/physical dimensions
>although I want to dorito swap everything.
>>13993538
Idk man...
why do people put an LS engine in an rx7 without realising that ruins the 50/50 weight distribution?
>>13993538
Because street cred which is irrational.
>>13993538
I love LS swaps
This is just bad bait though.
>>13993552
a v8 isn't that much heavier than a rotary with 2 snails strapped on it
>>13993567
Still ruins the perfect distribution.
>>13993552
It actually doesn't really change much
As far as balance goes.
>>13993567
It adds about 100lbs, depending on the LS. The actual weight isn't important though, it's the location of the weight. An LS will give it a much higher COG, and the weight will be placed much farther past the front axle. A stock 13B is 100% behind the front axle, so this makes a big difference.
>>13993593
reminder that any LHD FD has worse balance than any RHD FD
they dont tho, only in burgeristan
>>13993598
Did he remove anything from the engine bay, or modify the LS? You can shave a lot of weight from the LS or engine bay, so it would appear as though it is lighter. If that's an LS2, it could be very possible it is lighter because they don't weigh all that much more than a 13B-REW in the first possible. A 13B-REW with a single turbo is a lot lighter, and a lot of things can be removed from the engine bay. The front rear difference isn't that big of a deal anyways because
>>13993602
>>13993538
>tfw you realize you have a choice between using a 100 lb engine and 75 lb transmission to make a car with 300 HP and 1500 lbs, or a 450 lb engine with a 125 lb transmission to make a car with 800+ HP and 1800 lbs
One ends up being a god machine and the other a monster that murderers you the moment you touch any of the controls.
>>13993677
>not knowing how to drive high power cars.
>>13993605
Fun fact: the FD's engine is actually mounted slightly off center to the left side. So only RHD cars get proper weight distribution.
>>13993677
What car? A Toyota Starlet with a turbo motorcycle engine vs an LS2 turbo?
>>13993706
A locost with an aluminum block rotary vs an LS turbo.
>>13993699
>Never actually driven a powerful car
/o/, please.
>>13993538
If amerifat engines are so good why do they get rotary swapped?
>>13993538
Because chevyfags know that the LS motor is the only good thing GM has ever done and it's always been begging for a chassis that isn't shit and made of lead.
If GM had gone out of business and some drooling mouthbreather had bought the rights to the LS and whatever metalurgy plant they have the world would be better off.
>>13993743
>aluminum block rotary
>custom made housings that cost more then your average LS-build
kill yourself weeaboo
>>13993769
Does it cost more than a turbo LS with a drivetrain to hold 800 horsepower?
![Corvette-with-a-Honda-engine[1].jpg](https://i.imgur.com/LB3MY1b.jpg "Corvette-with-a-Honda-engine[1].jpg")
THEY FINALLY BUILT ONE THAT CAN TURN!
>>13993765
>always been begging for a chassis that isn't shit and made of lead.
>>13993785
>>13993785
>3100lbs
fatty
>7:56 on the hurrdurring
slow and cant turn
Why didn't GM sudoku right there?
>>13993779
> with a drivetrain to hold 800 horsepower?
A built 4l80e can handle 800 WHP and they're only $2000.
Another $1500-2000 puts an upgraded Ford 9 bolt under the rear which would have no problems with the hp level
so yes, your fucking aluminum side housings will cost more than an entire build.
>>13993816
You didn't count the $500 and an afternoon for the swap. Have fun with the cradle for that diff.
>>13993816
>automatic transmission
Are you even trying?
>>13993538
>>13993567
>>13993796
>>13993814
>>13993816
>2k for a built 9"
what
depends on torque not peak hp, anyway
>>13993598
Are you saying going from a perfect on the dot 50/50 weight distribution to 52/48 is fine?
This is why American cars under steer, you cunts never fucking learn, you are still doing the same shit you did back in the 70's with muscle cars running big block v8 engines incapable of going around a corner.
>>13993814
>3100 lbs is fat
an RX-7 FD can weigh up to 2,954 lbs. and that's a car with no air-bags from the factory.
also a C5 z06 can come with over 400 hp stock.
>RX-7 FD Type-R
>252 hp, 2780 lb
>Corvette C5 Z06
> 406 hp, 3118 lb
It doesn't take a mathematician to figure out which car has the power-to-weight advantage.
>
While the C5 may have been initially criticized for using inexpensive materials and older technology (e.g., in body panels and floor boards; an OHV engine; and leaf springs), ostensibly as cost-cutting measures, these components are actually very strong for their relatively light weight (low mass), or have proven reliability. The C5's modular body panels make excellent use of a lightweight composite material known in the automotive industry as SMC or sheet molded composite, a type of fiberglass that is blended and bonded with plastics. SMC provides better protection against direct blows because it is very stiff and will not dent. The floor boards on the C5 are a composite sandwich of SMC with balsa wood in the middle. Balsa wood was chosen for its extreme stiffness, light weight and excellent sound deadening qualities. The all aluminum LS1 overhead valve engine is much lighter than its cast iron predecessor, the LT1 and provides for a much lower hoodline when compared to an overhead cam design of relative displacement. The composite leaf springs are much lighter and sit much lower than typical coil springs and help provide the C5 with its excellent ride characteristics and distinctive ride height.
eat shit
>>13993861
Muscle cars not turning was more to do with them being 8000 lbs and having not-exactly-fantastic brakes and tires.
>>13993862
>FD
>no air-bags
You mean other than the one in the steering wheel?
>>13993862
>C5 may have been initially criticized for using inexpensive materials and older technology
>that moment that you realize that GM has been pulling these shenanigans for literally decades
bloody hell, GM, pull it together
>>13993823
>Diff cradle
>solid rear axle
![PC110002[1].jpg](https://i.imgur.com/dlbEVza.jpg "PC110002[1].jpg")
>>13993899
Sorry, I assumed that you weren't retarded and accidentally misspoke about the rear end in question.
If you're building a gorillion horsepower cant turn machine why not just stick with ancient burger trash that already can't turn?
>>13993769
For all five aluminum rotor housings your looking at a little more than 2500 dollars. Since he said power goal of 300hp, I'm going to assume he is just bridge porting a n/a rotary instead of going turbo which is free except the cost of tools if you do it yourself. That should easily make 300hp, maybe at the wheels. He could probably get a a completely junk 13b for really cheap since he is replacing all of the housings and basically building the engine from the ground up.
An 800hp LS needs huge turbos (probably two), exhaust manifold, a beefy drivetrain, bigger fuel system and an intercooler. Probably more that I'm forgetting. LS1s themselves are getting expensive, with the turbo parts it would be pretty expensive. Probably not much less than the rotary, wouldn't be surprised if it came out to be a lot more really.
I would do the rotary. 800hp in 1800lbs is just mad man fast, like way faster than any production car. 300hp in such a light car is still way faster than anything besides hyper cars.
>>13993899
>Solid rear axle and automatic transmission
I'm pretty sure that guy wasn't trying to build a pickup truck.
>>13993861
> you are still doing the same shit you did back in the 70's with muscle cars
I've never felt under-steer in my '99 Pontiac Trans Am
reminder
>>13993874
And poor weight distribution and outdated suspension design
>>13993942
comparing an engine of ~1.4L displacement to an engine of 5.7L of displacement.
>>13993700
yeah, that's what I was saying
>>13993954
>mad
>>13993816
Lol have fun putting a fucking a ford 9 inch under an fd
>>13993538
because they want to be memes
>>13993954
Comparing a light engine to a heavy engine. Also, the 13B is 1308cc and the DIG-T R is 1.5L.
>>13993919
>800 WHP
>literally any thing that isn't a dedicated drag-racing-only vehicle
Sorry, I assumed you weren't retarded.
>>13993920
>power goal of 300 hp
lol so you have the power goal of LESS than a stock LS1...
>$2500 for the ROTOR HOUSINGS
I payed $2500 for my LS1. and rest of the fucking car it came in
>>13993923
Anything that is 800WHP and isn't running a solid-rear axle and an automatic transmission is literally a modded supercar (UGR Lambos)
>>13993862
The only FDs that weighed that much were the late model automatic versions. Nobody wants those. Comparing power to weight ratio is stupid on the two cars because the Z06 is so much more expensive. The Z06 was over 50k new in 2002, while the Rx7 cost about 3 million yen for a base model in 2002. That's about 25k USD in 2002. Those models also had 280ps, and all Rx7 FDs had airbags.
>>13993967
https://www.youtube.com/watch?v=Q-9E8ty30Eo
butthurt weeaboos
>>13993990
Let's scroll up and see where this started.
>>13993677
>>13993743
It sounds like the whole point is that LS engines=drag racers and that's not what everyone wants.
Either that or he's seriously cross-shopping 300 HP engines with 800 HP engines for his shed build.
![MG3_1878[1].jpg](https://i.imgur.com/54nvYSA.jpg "MG3_1878[1].jpg")
>>13993990
Are you implying that the 8.8 can't hold 800hp?
Choose your next words carefully.
>>13994006
>some dumb american ruins his car
>"YOU ARE MAD"
gonna need to try harded
>>13994002
>z06 is more expensive
RX7 FD's are extremely rare in north america. here in the mid-west i've actually never seen one. they are like $26,000
a mint c5 z06 is right around the same.
I bought my LS1 Trans Am for $2500 and it looks like a $12,500 car . If i throw $10k in it i'll be shitting on gt-rs
fuck wit me bryu
>>13994022
I'm was just saying you could get a a drag-racing certified reliable setup (4l80e and ford 9-bolt) for cheaper than whatever weeaboo shit he was fapping over
>>13993990
The rest of the engine isn't that expensive. Junkyard 13Bs cost like $300, a rebuild kit for every single seal is like $1000. Porting is cheap. The only other thing you need is intake and exhaust, which you could use a straight pipe and an FD intake manifold. That sounds expensive but the LS needs two turbos, intercooler, bigger fuel and beefier drivetrain. Even using a Ford 8 inch rear and auto T56 isn't cheap, but if you use the rotary you could easily keep the IRS and manual. The car would be slower in a straight line but still probably do 10s.
Not sure why that guy wants an aluminum rotary so bad though, the same could be done with the stock housings.
>lol so you have the power goal of LESS than a stock LS1..
About the same if it's at the wheels.
>>13994030
>FD
>rare
I have one, paid $12,5 10 years ago.
If you pay twice that you're getting a low miles near pristine car.
>>13994030
>buying a lolcantturn car unironically
>>13994057
>Not sure why that guy wants an aluminum rotary so bad though, the same could be done with the stock housings.
Stock housings would weigh nearly double, though. 100 lbs is a lot in a 1500 pound car.
>>13994057
a junkyard 13b is there for a reason.
probably needs new rotors and housings.
why are rotards so delusional? they are an interesting oddity and nothing more.
>How I know /o/ is shit in 2k15
>People trying to compare/defend JDM engines against an LS
Sorry your little hondas and mazdas were made with very different ideas in mind, putting down serious power wasn't one of them. Inb4 i can put muh upgrades to make power. American cars built with performance in mind come out the factory with good power and go a lot farther with similar modifications. It's the same as trying to compare a Ford Taurus to a GT-R. Just stop.
>>13993538
Because it's the go-to for a V8 swap.
Just like RB25 and 2JZ engines are the inline six swap.
And just like 4G63 and SR20 engines are for inline fours.
And doritos for doritos.
LS1-swapping a DeLorean is a great idea too.
https://www.youtube.com/watch?v=n9Wm4sIEUtI
inb5 hurt butts
>>13994075
Junkyard LS will be there for a reason as well. I notice you didn't budget for a crate engine earlier.
>>13994079
let me know when a GM Literal Shit engine wins a Group C race
>>13994102
>$500 and a weekend bruh
>$
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>>13994075
He's putting in brand new aluminum housings, why does it matter if the junkyard ones are bad? Rotors don't normally go bad by just sitting somewhere. Anything else that would be bad he would replace in the build anyways. Even if you weren't replacing everything, I've seen them go up in junkyard auctions for pretty cheap, and weren't sitting for that long.
>>13994102
cylinders can be honed/bored, rotaries cannot.
>>13994086
VH/VK45 should be then new go to for V8 engines.
>>13994122
the rotors themselves are wear items.
>>13994134
>VK
>literally unbeatable in LMP2
best v8
>>13994087
Not sure what sort of crazy-ass Falcon that thing is. The 2015 XR8 only makes 450HP.
>12A
Also they should've jammed this in the RX-7.
>>13994129
But everything can be replaced in a rotary. If the housings are bad you can get new housings so you wouldn't need to bore/hone it.
>>13994129
https://www.google.com/search?q=rotary+housing+resurfacing
...
>>13994135
wat
>>13994135
You don't know anything about rotaries do you?
>>13994139
I want a VK S13 with tarbos and a built head to rev to over 8k.
>>13994129
Yeah, but the block is being replaced so it doesn't matter. I'm guessing the seals, bearings, and stat gears are getting replaced, so he pretty much just needs a crank and rotors. Can you hone and bore pistons?
>>13994162
>crank
You mean E-Shaft
![7095[1].jpg](https://i.imgur.com/fvcdVlI.jpg "7095[1].jpg")
>>13994161
nice nice, someone put one in a dragster
>tfw no flatplane VK
https://www.youtube.com/watch?v=c4_iBE5iNvg
>>13994178
Literally the exact same thing. It's a rod with eccentric journals. The only difference is that one has conrod bearings on it and the other has rotor bearings on it.
>>13994209
If american engines are so good, why do they get 2jz swapped?
>>13994204
We need Nissan to put the VK in a performance car. Next gen Z needs a VK45.
>>13994030
I've seen one in wyoming of all places. Good times.
There's nothing jdm about that engine kek
And it's bevause Japanese know how to build a proper car
So buttmad Americans take the only thing that isn't complete and total utter shit (just complete and utter shit) and out it into superior vehicles to retain some sense of national pride or something. Never mind ls shit engines are made from Chinese materials but whatever
>muh purrfekt wait distrobushun
>>13994308
Little do they know 50/50 is still far from perfect
Better than front biased garbage tho
>>13994523
I reckon it'd be acceptable if you just had a Skyline rolling shell and couldn't get your hands on an RB engine.
an old V8 supercar.
>>13993538
Americans being stupid has nothing to do with JDM engines being good or not. They are mutually exclusive phenomena.
>>13994153
Never did , never will, but you can't stop me from shitposting.
>>13994523
>the chevy badge
HAHAHAHAHA
>>13994593
I must know what this is from.
>>13996515
I'm going to say it's from a generic /o/ related cartoon with some anon's text expertly shooped over the top.
>>13996532
Yeah, now that you mention it
"body kit"
Fuck. I still want to know the /o/ related chinesium cartoon. Anybody?
>>13996583
I think it's the beginning of Initial D Fourth Stage.
![piction.ru_anime_1HH[1].jpg](https://i.imgur.com/1GYOeCw.jpg "piction.ru_anime_1HH[1].jpg")
>>13996606
4th stage had better animation that that. It might be Your Under Arrest
