Ls1 Swap on S14

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
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Dookie
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yelnatsch517 wrote:Anyway, I read through most of the posts if not all (might have missed a few here or there), but I didn't see any actual cost figures. How much would a complete LS1 conversion cost just so I could put it into perspective in comparison to other swaps and turbo KA's.
A guy on LS1 tech put one in his s14 for under 6 grand. Mind you he did fab up some of his stuff like motor mounts.


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k6kicker
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sr20goofus wrote:Fact: *KA has a strong block, but there is a reason u never see these engines in any kind of racing
I may be VERY wrong on this....and if you have read what i said earlier I'm certainly not anti-LSx (and did i get that term floating around here too?) swapping but I'm fairly sure Nissan used KA24E's back in thier early 90's hardbody baja race trucks....Your point still remains valid but I just wanted to clarify things a bit in a mature fashion....If I'm anti-anything its flame wars...debates actually get stuff done

/for the record I plan on rocking a high comp KA in my 240 once it needs a rebuild (e pistons in my de block, i/h/e, 91~93 cams). Simply fits my needs better (WV is, in fact pretty hilly and not exactly turbo friendly when you need to start on a hill from a dead stop and this setup can be done by myself in my garage, well after an ecu flash...)//that ps tag was way too long///i need to stop posting over at fark

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superDorifto
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isnt that the historical, and technical definition of a forum...a place to debate? i give myself the capt. obvious award for today...overnight shifts will make you type strange things, time for sleep...hooray debating!

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k6kicker
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But of course.....but a debate doesn't typically include comments like....shutup newbs the sr i picked up at racewars totaly powns your lame *** dumbestic v8

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OriginalWheelman
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To all the people who think OHC is a new thing a history lesson form Wikepedia...

"The first DOHC engines were two valve per cylinder designs from companies like Fiat (1912), Peugeot (1913), Alfa Romeo (6C- 1925, 512 - 1940), Maserati (Tipo 26, 1926), and Bugatti (Type 51, 1931)"

Pushrods while they have their drawbacks, have advantages too. Like havign the top of your head lower, like when you need to cram a Big azz V8 into a car as low a a Vette. Not to mention overall design is simpler. And the shorter timing chains mean less places for a chain to stretch. On the flip side most OHC motors now use Timing belts, w/ tensioners which is an advantage. The bottom line is there are ups and downs to each system and they choose to use one or the other.

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k6kicker
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amen to that....the biggest advantage of a pushrod based motor is the displacement per pound stat.....sure they tend not to be big on hp per liter but when you look at hp per pound they can do some major damage

Healing
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^^ Finally, some factual-based discussion on the LS1, instead of throwing fanboyesque comments left and right -_-

Maybe if we all got parts for our japanese cars as cheaply as Japanese did, we wouldn't have to see LS1 swaps as so much of a viable option.

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superDorifto
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Healing wrote:Maybe if we all got parts for our japanese cars as cheaply as Japanese did, we wouldn't have to see LS1 swaps as so much of a viable option.
thats the main attraction for me. dont get me wrong, i like my KA and how realiable it is, and i love the sound of the LS1, but the real draw is that for a little under a grand i can see REAL gains out of the LS1 (cam,intake,retune). im just tired of everything costing an arm and a leg for my damn car. just rods and pistons for the KA run 1000-1200 bucks. ive been looking through some catalogs like jegs and summit, and anyone can get a FULL performance rebuild kit for an LS1 for 2000-2400. thats includes everything but fresh oil for the new motor. i guess im just a cheap bastard...

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k6kicker
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you know though, i can just see a group of guys in japan saying "oh man, wouldn't that ls1 be amazing for drifting in my silvia. You would be able to turn the wheels over at any speed through your first 4 gears, the torque from all that displacement is just incredible. I just wish i didn;t have to pay an arm and a leg for it, those lucky well-hung amaerican bastards"

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Dookie
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hahaha

SeVa-S13
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Typical SR fanboi... LOL @ no KA's used for racing. Maybe do some research before you post up some random BS.Carb'd, single cam KA's *dominate* SCCA GT3 racing in S13's, S14's, and even Z33's.

Still though, modern LS engines are quite the platform and you can't beat the support.

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superDorifto
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you mean "rucky, rell hung american bastards"....hahaha

le_ryan
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superDorifto
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oh,...i remember when that car went up for sale...great install, absolutely horrid paint job....

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OriginalWheelman
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A+ for the swap, F- for the GTR badge.

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Dookie
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OriginalWheelman wrote:A+ for the swap, F- for the GTR badge.
I do like the green corvette engine covers though, looks neat imo

KRUZNBY
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What diameter exhaust would be best for this swap?

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tyrannix
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superDorifto wrote:its been said before, but the sbc basically created the aftermarket...with the LS1 or any other domestic V8, more power is simply a cam and other similarly simple bolt on away. Do the nissan V8s have this type of aftermarket support? Does the RB? 500hp is attainable without opening up the bottom end, +1 for the LS1
2JZ anyone? it's pretty common knowledge of the 1000 hp stock bottom supras

I thought JZs had USDM available parts...and fitting one isnt going to be that different than an RB ( +displacement )

+square bore-stroke (86mm for both)

2JZ-GTE = 320HP @5600 stock

my thoughts are stay with an inline engine whenever possible. less parts (esp moving parts), less things to mess up, and they sound great too.

if i end up getting a new truck to tow my cars (most likely), im going to build a ford 4.9 straight 6 for it

CJ


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tyrannix wrote:
2JZ anyone? it's pretty common knowledge of the 1000 hp stock bottom supras

I thought JZs had USDM available parts...and fitting one isnt going to be that different than an RB ( +displacement )

+square bore-stroke (86mm for both)

2JZ-GTE = 320HP @5600 stock

my thoughts are stay with an inline engine whenever possible. less parts (esp moving parts), less things to mess up, and they sound great too.

if i end up getting a new truck to tow my cars (most likely), im going to build a ford 4.9 straight 6 for it

CJ
Thats a good point, but you have to think those 1000hp stock block Supra engines are 20 grand engines.

The big point of the LS-1 is hp per dollar. You find a 2JZ with decent miles for your 240 and your going to find a LS-1 for probably $1500 less with the same miles.. The extra money you save put into that LS-1 is going to give you HP well beyond the stock 2JZ's 320..

My problem has always been I love the domestic power but hate the package. I love the import package but hate the anemic powerplants in them.

The draw to imports has always been the fact you could get the vehicle cheap and spend the money you saved on upgrades. Well since the scene blew up companies have screwed us because nothing is cheap anymore.

If your a tuner, your a hot rodder. It's the same thing. The hot rodders wanted to make thier cars faster as cheaply as possible. Were doing the same thing.

The Ls-1 swap is evolution, not de-evolution.

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tyrannix
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the actual dollar amount is beside the point i was making. I was replying to the statement about '`japanese engines cant hang over 500 hp on a stock block' or something to that effect

i was rebutting that statement (and i got to use 'rebutting' in context, yay me)

i'm not anti-anything really. I will build and hot-rod teh hell out of anything to get the car that i want to be driving, wether it be track or street (or both)

in fact, I'm all for taking a part thats uncommon, everyone says shouldnt go in, or never even thought of, and making it rock their world (project ca20det + s13, and project ae86+ca18) those have been done before, but not by many... i just really like the CA series, so i use it. If i had a huge hardon for 'Hemis', then a 426 would be in my s13 ...

bottom line is do what you want to your car. you paid for it? you mod it how the hell you want.

you can put a nissan badge on the LS1 if you want... ****, i put a decepticon emblem on my engine

yeah, also just stating that im not a fan of 'V' engines (or horizontally opposed 'boxter style' in general, no matter who made it, i would rather have an inline (straight 8 FTW? )

CJ

edit> theres also the point that with a turbo engine, getting more power is as easy as turning up the boost. to a point of course, but taking a stock 6 PSI, and bumping to 12 (like you do as your first mod to a CA, t25 max usable efficiency is around 12) you get more power

TheOne
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fudge straight 8's!, straight 14's FTW!http://people.bath.ac.uk/ccsshb/12cyl/

sorry, this thread got way out of hand:)

it can be easy to swap an ls1 so long as you know how to weld and measure.

lbrowne
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Good lord....now THATS an engine swap :D

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Dookie
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tyrannix wrote:edit> theres also the point that with a turbo engine, getting more power is as easy as turning up the boost. to a point of course, but taking a stock 6 PSI, and bumping to 12 (like you do as your first mod to a CA, t25 max usable efficiency is around 12) you get more power
Exactly, thats why you TT the LS1 and get even more power

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sr20goofus
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SeVa-S13 wrote:Typical SR fanboi... LOL @ no KA's used for racing. Maybe do some research before you post up some random BS.Carb'd, single cam KA's *dominate* SCCA GT3 racing in S13's, S14's, and even Z33's.

Still though, modern LS engines are quite the platform and you can't beat the support.
im rooting for the LS1 swap, not saying SR is all that its cracked out to be. SOHC KA's are used in SCCA ITA and ITS class's, GT class cars uusually run a different engine and tube frame, no SOHC would ever be reliable or powerful enough to compete in a GT class....as far as i know ive seen only a few 240's and all running Lb20 i think or L20 motors. there is a reson i dont see them with KA's. Ive done my researcha dn those cars are certainly not GT1-3 competative.

marshun
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i might've missed it, but i didnt see anyone mention the response from an ls1. the response is awesome compared to an SR.

someone did say that the engine is lighter but the transmission is heavier so it evens out the weight overall. but the weight of the transmission is more towards the center of the car and it'll still better the weight distribution. the ls1 will also take to mods WAY WAY WAY better. thats just the way its always been. plus their mods are cheaper! idunno about you guys, but more power for less money sounds good to me.

all i know is this christmas...my fastback is gettin some ls1 love...i guess this means i'll have to fab up that cage sooner than i thought

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http://www.hinsonsupercars.com/shopCars.htm

you are all missing a very simple point.....700whp twin turbo motor that weighs less than anything else capable of making the same horsepower...RELIABLY. sorry for the caps. im just waiting on the ls7 swap....mmmmmm 505 na whp on a stock motor. oh and 7 litres. yummy. i would love to see my s14 do like the vette on top gear, outrun a trail of burning gas. that was the best.

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superDorifto
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the LS7 is not worth the extra cost...its basicly a factory built gen III v-8 (possibly gen IV, im not sure) with all the go fast parts allready there....have you looked at the cost? its around 15,000 for the crate motor, and im not sure if that even includes the dry sump oiling system. you can put out that much with the LQ9 (6.0L iron truck block thats 88lbs heavier than the aluminum block) and a set of CNC'd heads and the required parts to help the motor breath. Oh, and a higher comp ratio. but youre right the LS7 is the pinicale of NA OHC right now....im just knocking it because i could NEVER afford to put a $15,000 motor into my $5000 dollar car. i might be able to do an LS1. but never an LS7, and when i do, its gonna be a hybrid gen III small block, prolly LM4 or LM7, just becasue they cost so much less (iron blocks=i dont care about weight bias because theyre THOUSANDS less in cost)...

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S14toRPS13 wrote:People who loves this idea needs to go back to driving mustangs and camaros. Doing this swap just tells all the import hating muscle car guys that they're right!!!!
Funny how so many import guys whine and ***** and moan about domestics hating on them, yet you go and do the same damn thing. You kids are so hyprocritcal it's hilarious!

I own both. Love both for what they are. I also think the LSX series motors are about as superior as you can get as they just make stupid easy power added with reliability and lightweight. Want 7k and a turbo? Grab the new LS7 427 that's in the new Z06's and turbo it. It's got a 7k redline stock and 470rwhp N/A STOCK. There's even a guy with an LS1 who's built it to rev to 8k. Not bad for pushrod technology.

When my rotary pops in the FD, its' probably going to be replaced with an LS1.

Kenrik you're wrong on the weights. The LS1 WITH transmission and accessories weighs 60-100lbs lighter than a KA24DE. They already weighed the two set-ups before putting the LS1 in the S14 at Hinson. That KA is an iron tank with it's weight(not as bad as RB's though).

Oh ya and did I mention 30+mpg on the freeway in a Pushrod V8 bishes? Even putting the hammer down on back roads I still get over 20mpg.

My S14 N/A couldn't ever do that.

One_Love
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JustinStrife wrote:
Kenrik you're wrong on the weights.
what else is new

knx2
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I really like this idea. Although the work and effort seems like it would just be worth it to turbo the KA and be done. Yes the ls1can make more power right off the bat NA. But who wants to wait?


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