Need your suggestions for I high horsepower 240sx.

[cobra tom]

Ok here is the build. It will be a 95-98 240sx with a 2jz/r154 swap. I will be using 2 tech motorsports swap parts. The car will have a garrett 74mm,272 crower cams,aem,1200cc injectors,twin or triple walbros. According to boost logic that setup will make 750whp on e85 and 850whp on race gas. The car is gonna retain ac and ps. I know the 240's are light and like to get a** happy. Im gonna do a diff swap {z32 with axles} and raise the gears from the stock 4.08 down to a 3.69 to settle the car down and make it faster on the big end. I plan on rolling around on the biggest dr's I can fit with the fenders rolled/pulled on the 750whp tune and the biggest et drags I can fit on the 850whp tune. 60mph will be my starting point. Do yall have any suggestions as far as the car goes or what you would do to strenghten anything?

Thanks cobra tom

Modified by cobra tom at 7:59 AM 2/18/2009
Modified by cobra tom at 9:33 AM 2/18/2009

[steeda763]

Assuming that you're really going to perform all of these mods (and aren't just dreaming), you're asking us how to strengthen the car?

Like any other car, you can increase rigidity with a roll cage, strut bars, and stitch welding.

But with all of this invested, why would you swap in an old Z32 differential? You should install a helical gearset. It will be far better suited for the power you're planning to put down. The integrity of the Z32's axles is comparable to the 240sx's -- either should be able to endure the stupidity that is street racing.

[cobra tom]

Assuming that you're really going to perform all of these mods (and aren't just dreaming),

im researching the build right now and laying out a plan. Dont want to start a project without all the info.

you're asking us how to strengthen the car?

Yes among other things. Im not really familiar with the 240 and dont know the in's and outs.

Like any other car, you can increase rigidity with a roll cage, strut bars, and stitch welding.

stitch welding? never heard that before?

But with all of this invested, why would you swap in an old Z32 differential?

it was suggested by some of my 300zx friends. said its strong!

You should install a helical gearset. It will be far better suited for the power you're planning to put down. The integrity of the Z32's axles is comparable to the 240sx's --

helical gearset in the stock diff? its the stock diff a limited slip? I though the 300zx axles were larger and stronger?

[ashoe]

It sounds like your planning on a drag car?? Or a show car??

[glitched]

I dont care what you preface it with, I'm still going to flame you. You plan on building an incredibly fast car for street racing STARTING at 60mph. Go die in a fire and dont bring any innocents with you.

[cobra tom]

It sounds like your planning on a drag car?? Or a show car??

Street car to be driven as often as possible.

I dont care what you preface it with, I'm still going to flame you. You plan on building an incredibly fast car for street racing STARTING at 60mph. Go die in a fire and dont bring any innocents with you.

Settle down tiger their is the texas mile event and the 60-130 event. I guess I should have stated that in the post above. The car is not a drift car or a drag racer.

[steeda763]

Stitch-welding is the tedious process of tack-welding chassis seams, therefore reinforcing their integrity.

With a few exceptions, the majority of all-generation 240sxes in the US came with an open differential rated at 4.08:1. If you're looking for an S14 chassis, it's pretty safe to say it's open diff, unless it was upgraded. As for upgrading the diff, you swap the internals of the differential with the new parts, whether it be helical, planetary, open, or viscous limited slip.

The stock 240sx axles are not weak by any means, and Z32 axles will afford you little, if any, benefit over OE.

EDIT: Concerning the safety of the general public, I really hope that this is all just wishful thinking.
Modified by steeda763 at 12:45 PM 2/18/2009

[cobra tom]

Stitch-welding is the tedious process of tack-welding chassis seams, therefore reinforcing their integrity.

is the 240 chassis weak in specific areas? Whats good suspension parts for the back{brand wise}?

With a few exceptions, the majority of all-generation 240sxes in the US came with an open differential rated at 4.08:1. If you're looking for an S14 chassis, it's pretty safe to say it's open diff, unless it was upgraded. As for upgrading the diff, you swap the internals of the differential with the new parts, whether it be helical, planetary, open, or viscous limited slip.

where is a good placed to find the upgrade parts?

The stock 240sx axles are not weak by any means, and Z32 axles will afford you little, if any, benefit over OE.

Gotcha! I have just read in the rb section people breaking them at 350-400rwhp and the 300 guys say theirs hold up to 1000whp.

[ashoe]

If your pockets will support a 850hp 2jz build than i'm sure you can pay someone to build your car.If you plan on using it for street racing than.

I dont care what you preface it with, I'm still going to flame you. You plan on building an incredibly fast car for street racing STARTING at 60mph. Go die in a fire and dont bring any innocents with you.

[evolve S13]

As far as 240 parts go here are a couple sites to get started on, i would suggest an after-market Diff in your situation along with a cage most likely bolt in. (sounds like u wanna keep the interior nice not gutted)

240sxmotoring.com/enjukuracing.com/

[steeda763]

+1. You're looking at around $35k worth of work if done safely and correctly, if not more.

[cobra tom]

If your pockets will support a 850hp 2jz build than i'm sure you can pay someone to build your car.

Why would I have someone build my car? That retarded if you can do the work yourself. 850whp in a 2jz is not that expensive because the stock motor does not have to be built to handle the power ,the head does not require porting or larger valves and the stock intake manifold and tb are not a restriction. Im best friends with the fabricator at boost logic who has a 86 300zx with a T67 2jzge/r154 swap in it. I have been building cars a very very long time so I know alot of people and have alot of friends. Fabrication is not something I fear and my friends are wicked at it. Im a good shopper and very patient when it comes to getting parts. So my pockets dont have to be deep to get it done. I have always built domestics and now Im expanding my horizons.

As far as 240 parts go here are a couple sites to get started on, i would suggest an after-market Diff in your situation along with a cage most likely bolt in. (sounds like u wanna keep the interior nice not gutted)

240sxmotoring.com/enjukuracing.com/

thank you!!!

+1. You're looking at around $35k worth of work if done safely and correctly, if not more.

Wow!! Im thinking it will be a good bit cheaper then that! thanks for the input

[SR24DET]

+2 on this is going to be godly expensive. You do know that the supra motor and parts are going to be really expensive. If this is going to be a race from 60-130, I would go with a different setup. Unless ur a baller. I agree that the 2JZ is a pimp setup, its over priced. If it is a straight race from 60-130, I would swap in a LSX motor or even something older. The old LT1's are cheap. They are cast iron, but if you are already moving its not as big of a deal. Also if your not turning its A ok. As long as this is a straight race, go with something big and heavy. I normally don't promote big V8's, but when it comes to straight line racing, its cheaper and works well. But as I said b4, if your a baller and can afford to spend an obseen ammount of money, go for it.

We dont mean to hate or flame on you, it just doesnt sound serious. This is alot of money. And most people can't afford stuff like this. And I really dont like to hate on people for not knowing stuff about cars and racing because hey, face it..... we all need to start somewhere. One of the big reasons why I dont take you seriously is because of your comment about stich welding or frame bracing. If you plan on driving a light car that has a huge ammount of POWER and you dont know how to drive it, that is a scary thing. For both you and people around you. You dont know what stich welding is... that makes you sound inexperienced. And like I stated b4, an inexperienced driver behind the wheel of a BEAST, can create problems for more then just you.

[CkrooK]

Hey man, I live in Texas too.Ive seen Boostlogics Supra at SeguinRaceway.

Most people on here are pissy as shiit and flame anyone that doesnt know much about cars. My suggestions are go to Houston240sx.com There's a lot of Texas Folks and theres even a build goin on with a 2jz goin into a S14.

[X abisai X]

good luck, i hope the build comes out great so you can post a video to prove all the haters wrong

[cobra tom]

Quote »+2 on this is going to be godly expensive. You do know that the supra motor and parts are going to be really expensive. If this is going to be a race from 60-130, I would go with a different setup.[/quote]Building a 2jz setup is not as bad as you think. If you shop around you would be surprised what you can get. But then I again I have hooks here and there. As far as what is better straight line take a look at the texas mile's fastest street car. 242MPH supra beating out stroker tt vipers,stroker tt vette and build tt ford gt. Also take a look at Boost Logics 6 spd supra with the factory irs 7.91@189.

Quote » One of the big reasons why I dont take you seriously is because of your comment about stich welding or frame bracing.[/quote] I have owned domestics like I stated before. You dont stitch weld mustangs and camaros which is why I have never heard that term used. We do subframe connectors and cages. Mustangs we do battle boxes outback. Im asking because 240's are a new breed to me and I want to learn what I can. Everycar has certain weakiness and usually people that are all about that brand know them hints me asking questions.

Quote » If you plan on driving a light car that has a huge ammount of POWER and you dont know how to drive it, that is a scary thing. For both you and people around you. You dont know what stich welding is... that makes you sound inexperienced. And like I stated b4, an inexperienced driver behind the wheel of a BEAST, can create problems for more then just you.[/quote] That statement makes no sense. You are basicly saying I have to be a welder/race car builder to know how to drive. I have owned 3 camaros of which the fastest ran 11's. I have owned 5 mustangs of which the fastest ran 9.9@143 with a 5spd. My current car is a 2003 cobra that had a 2.2L kenne bell that put down 599rwhp threw cats on 93 octane. I got bored with the kb so I tore it off and build a turbo kit. Im in the finshing steps off. Being I have had 5 mustangs and 3 camaros I wanna do something else. I have been around supras for 12 years now and I know the motor can take a beating and make sick power but people are to proud of the car itself. I love sc300's but once again people are to proud of the car itself. You can get a clean 240sx for a wore the fxck out sc300. Plus the sc300 weighs 3500lbs which will cause more stress on the drivetrain.

Hey man, I live in Texas too.Ive seen Boostlogics Supra at SeguinRaceway.

Have you seen the black supra or the silver one?

Most people on here are pissy as shiit and flame anyone that doesnt know much about cars. My suggestions are go to Houston240sx.com There's a lot of Texas Folks and theres even a build goin on with a 2jz goin into a S14.

sweet thanks!!!

[AZ89two4Tsx]

I would try to get this thread moved to the Hybrids section. Not many here in 240 gen will be able to answer all your questions. What you're going to be doing is going to require a lot of custom/fab work and the people over in that section have the know-how because they've done it before.

Here's the link.

zeroforum/201

Good luck with your build and I hope it turns out well.

[SR24DET]

Just so you know I wasnt trying to come off like a d!ck. Second I have seen domestic cars with stich welding. It is a common thing. As the post go on you do seem to know more about cars then your first post leads us to believe. I know supras are stout motors and can hadle alot. There are a couple people on here that have done the 2JZ swap in 240's but like ^ said, check the hybrid section.

[!Zar!]

LSx swap.

Turbo it if you wish.

Cage.

Done.

[cobra tom]

Just so you know I wasnt trying to come off like a d!ck. Second I have seen domestic cars with stich welding. It is a common thing. As the post go on you do seem to know more about cars then your first post leads us to believe. I know supras are stout motors and can hadle alot. There are a couple people on here that have done the 2JZ swap in 240's but like ^ said, check the hybrid section.

I must admit this site is alittle different then other automotive sites. Most sites Im on people are very open to different ideas and the thought of someone trying to do some sick or powerful you get alot of people wanting to give you tips or tricks to help out. Here its like people are talking about my pockets,building skills,driving skills or trying to convince me that I need to just stick with a bpu 2jz. Everyone talks about traction problems yet there are people with rb25/rb26 that are making big numbers and they make it work. I dont think you are trying to be a dxck but I dont think I should have to explain my past for answers or suggestions that are people blowing thinks out of the water. I would prefer someone say " hey the area under the rearseat is weak or weld up were the lower controls attach to the body".

LSx swap.

Turbo it if you wish.

Cage.

Done.

To expensive for what I want.

[SullivanRacing06]

Street car to be driven as often as possible.

Settle down tiger their is the texas mile event and the 60-130 event. I guess I should have stated that in the post above. The car is not a drift car or a drag racer.

Modified by SullivanRacing06 at 12:04 PM 2/26/2009

[cobra tom]

a texas 60-130mph race hu? let me know when you run in that, ill race you

i doubt youll ever build this "car"

my cage allowed my car to hook, fu%k slicks, toyo 355/25/18s fit really well on the back on my s13, like i said b4, if you think you can win, let me know

and lets not forget about the cocky douchebag who thinks he knows everything! yes douchebag the 60-130 event huh!!

http://www.lonestarmotorsportspark.com/

http://www.ls1tech.com/forums/...27829

now gtfo!!

[glitched]

I must admit this site is alittle different then other automotive sites. Most sites Im on people are very open to different ideas and the thought of someone trying to do some sick or powerful you get alot of people wanting to give you tips or tricks to help out. Here its like people are talking about my pockets,building skills,driving skills or trying to convince me that I need to just stick with a bpu 2jz. Everyone talks about traction problems yet there are people with rb25/rb26 that are making big numbers and they make it work. I dont think you are trying to be a dxck but I dont think I should have to explain my past for answers or suggestions that are people blowing thinks out of the water. I would prefer someone say " hey the area under the rearseat is weak or weld up were the lower controls attach to the body".

To expensive for what I want.

I guess part of that is some of the type of audience we get around hereLots of people jumping on the bandwagon with nothing but dreams in their eyes and no knowledge or money to back it up. people like to talk big but just dont understand how realistic their dream is. Very rarely do we actually get someone serious asking such questions.

As you've probably noticed from my post, street racing is very very much so looked down upon around here. we didnt realize you were building for such an event. The kinds of forum posters i mentioned before wouldnt even know such an event existed. They just saw it done on the latest anime, or movie, and think they can just easily and cheaply build some crazy car to go high speed street racing....

Its almost like it takes the start of an actual build thread of a huge project before someone believes ya around here...

*edit: this is especially true for 240 gen!

[ca18detgabby]

this is a semi-budget build............ why not borrow a NA 2jz and boost it or run a 1jz with a 2j bottom end even? far cheaper than going with a 2jz unless you can find a deal on them.

being that an LS1 is out of your price range........

if it is such a race, I would want some cheater juice as from a roll you are going to want that boost ASAP.

you are def going to want to upgrade brakes, the stock stuff are a joke.

some 15x10s in the rear maybe?

screw strut bars, cage it in should be more than enough and intergrat the struts towers. all your bushings, LCAs, suspension, ect will all require not only an overhaul....... but maybe even one of parts to fit the wheels and tires.

also, Ive heard the 5spd R154s are a arent amazing when it comes to throwing a s*** load of power at them....... nothing Ive experienced, but I might look into a dog box or some other sort of custom gear box.

what are your plans for EMS?

[blownSR2087]

i know alot of people are sometimes jerks they think u are full of bull crap but really they dont even kno u u could be for all they kno u can be a movie star for all they know i kno that the 2jz engine is one of the best motors build stock the bottom end can handle 800hp all u really need is a big turbo good big injectors and a good fuel system and a good tune if u are saying u have alot of friends then take there edvise not some people that u dont even kno on this fourm kno dont get me wrong there r sum people that kno what they are talkin about but then there are some butt holes that dont kno what there talkin about good luck with you car and send me more info and pic when u start it

[cobra tom]

I guess part of that is some of the type of audience we get around hereLots of people jumping on the bandwagon with nothing but dreams in their eyes and no knowledge or money to back it up. people like to talk big but just dont understand how realistic their dream is. Very rarely do we actually get someone serious asking such questions.

As you've probably noticed from my post, street racing is very very much so looked down upon around here. we didnt realize you were building for such an event. The kinds of forum posters i mentioned before wouldnt even know such an event existed. They just saw it done on the latest anime, or movie, and think they can just easily and cheaply build some crazy car to go high speed street racing....

Its almost like it takes the start of an actual build thread of a huge project before someone believes ya around here...

*edit: this is especially true for 240 gen!

Its cool! Beening that have built cars in the past I like to put a pen to things before I do it. I have spent alot of money over the years on things that didnt work or got no gains. I grew up a die hard chevy guy and made a change to ford when I realized that one brand was not better then they other when it came to beating on a the car. They both had their strenghts and weakness and they both cost money to fix. Here are some pics of my turbo cobra build.

Old setup. Sorry its dirty its my DD.

some of the new setup PT76GTS!





up pipe





making adjustments



shot of where the tial 44mm will sit and the one piece intercooler pipe. {NO the blue coupler is not happening! it will be black!}



the money shot!

NEW PHOTOS!!!

driveside shot/crossoverpipeunder transmissionpassenger side shot with crossover jointundercar shot

mounted tial 44mm wastegate

start of the 4' downpipe

UPDATE!!

uppipe finished

dp continueddp is tucked up higher then the mufflers

front view

custom tb 3' to 4.5' oval {it will be polished}

UPDATED PHOTOS!! 2 1/2 inches of ground clearance might have to raise it up alittleAlittle side shot!! I know no center caps........cant decide on svt black cap or chrome caps.my stainless works 3' catback! 4' tips oh and my 315/35r17'swhat the cockpit looks like now.

this car will be sold and profit made is going to knock a big dent in the 2jz 240 build.

[cobra tom]

Quote »this is a semi-budget build............ why not borrow a NA 2jz and boost it or run a 1jz with a 2j bottom end even? far cheaper than going with a 2jz unless you can find a deal on them.being that an LS1 is out of your price range........[/quote]the 2jzge{na} gets break up at high boost settings which limits power and rpm. distributor style vs coil on plugs {2jzgte}

Its not budget in the sense Im limited ,but more the fact I dont want to waste money or regret not spending alittle extra for alot more.

A jdm 2jz is $1500-$2000 and a r154 setup is about $2200.A ls1/t56 setup is $4000-$6000 depending on mileage.

I have 3 big issues I run into with the ls1 build. #1 TORQUE!!! With a race weight of 3000lb big flat torque curve is the last thing I need. That will make the wheel spin ridiculious{remember I want acceleration from a roll start not a dig}.!! #2 RPM!! the ls1 engine with a turbo setup and a turbo cam will shift around 6800-7k vs a cammed 2jz shifting at 8k{going for top end}.#3 Reliable strength!! The ls1 is reliable to around 550-600whp then is anyones guess how long it will last. When you have a turbo motor the last thing you want is for the motor to crack a piston or break a rod then send chunks of metal threw your exhaust into your turbo.$$$$$$ and built lsx based engines are 3k-4k {so you can add that to the cost to put a ls1 in the car. The 2JZ will handle 800whp safely all day long so you dont have to spend that extra money.}

Quote »if it is such a race, I would want some cheater juice as from a roll you are going to want that boost ASAP.[/quote]the aem ecu for the 2jz has a 2 step built into it that can be setup to use from a rolling start. Insta boost!!

Quote »you are def going to want to upgrade brakes, the stock stuff are a joke. [/quote]definately.... probably z32 brakes

Quote »some 15x10s in the rear maybe? [/quote]

thats what I was thinking!! WELD racing FTW!

Quote »screw strut bars, cage it in should be more than enough and intergrat the struts towers. all your bushings, LCAs, suspension, ect will all require not only an overhaul....... but maybe even one of parts to fit the wheels and tires.[/quote]Thank you thats the kind of info i was looking for!!!!

Quote »also, Ive heard the 5spd R154s are a arent amazing when it comes to throwing a s*** load of power at them....... nothing Ive experienced, but I might look into a dog box or some other sort of custom gear box.[/quote] I have two friends running the r154 setup both making 700whp. One is light 2900lb race weight and the other is heavy 3600lb race weight. The beat the living hell out of them and have had good luck. We also have a transmission guy that does good work cheap!!

Quote »what are your plans for EMS?[/quote] I will use the supra AEM. Aem is releasing a new version that the supra owners are all getting excited over. so the old one that works great is going for around $1000.00 used. I will have boost logics tuner tuning the car. He is the best supra tuner in the world.


Modified by cobra tom at 11:07 AM 2/19/2009

[cobra tom]

i know alot of people are sometimes jerks they think u are full of bull crap but really they dont even kno u u could be for all they kno u can be a movie star for all they know i kno that the 2jz engine is one of the best motors build stock the bottom end can handle 800hp all u really need is a big turbo good big injectors and a good fuel system and a good tune if u are saying u have alot of friends then take there edvise not some people that u dont even kno on this fourm kno dont get me wrong there r sum people that kno what they are talkin about but then there are some butt holes that dont kno what there talkin about good luck with you car and send me more info and pic when u start it

I understand that. I dont have any 240 friends yet. The guy that I talked about with the 2jz/300zx is a big nissan guy with alot of friends mostly 300zx's. And my other buddy is the one that builds the supras for boost logic {Also part owner}. So I have have alot of knowledge backing me on the 2jz area and 300zx strenght parts. Its the 240 I need the info on. If everything goes as planned I will have my cobra finished in 3-4 months. I will sell it and start the 240 build. I will start a thread with pictures as I go. It should move pretty quick seeing how I will make a good profit from the cobra and be freeing up 700 a month in car/insurance payments. Longest part will be finding a good deal on a clean 240sx without spending a grip. I have come across some nice 95-96 one owner cars with 70-100k for $2800-$4k. I have seen a handful of 97's for $3800-$4500.

[derrick113]

The Cobra build looks really good, all that hard work just to sell it haha. As far as the 240 build, youre gonna need a beefy driveshaft for 750hp and is it really necessary to have A/C and power steering on such a high hp car? None the less good luck with your build, should be a lot of fun.

[cobra tom]

Quote »The Cobra build looks really good, all that hard work just to sell it haha.[/quote] I was a fun build and I learned alot about fabrication. The beauty is a turbo kit for a cobra starts at 6500 for a base kit and by the time you upgrade the turbo,bigger ic pipes,better intercooler,big downpipe and catback you are at 10k not including converting it to na intake style where you removed the factory blower. My kit cost me 3k to build including 1100 worth of new front suspension and it has all the upgrades. So I dont feel to bad because I will make out good when I sell it.

Quote »As far as the 240 build, youre gonna need a beefy driveshaft for 750hp and is it really necessary to have A/C and power steering on such a high hp car? None the less good luck with your build, should be a lot of fun..[/quote] Not a garage car,race car,show car or dyno queen. The car will be street driven everyday when it is nice outside. I want a car I can enjoy and drive. With ac,ps,nice stereo and nice wheels. Something I can ripe it up in and take my wife to dinner in. The ac and ps will not effect the numbers I posted up. I have a good friend with a Boost Logic built Supra that has the setup I posted up top. Car dynoed 630whp@18psi on 93 and 848rwhp@34psi on c16.

Modified by cobra tom at 10:38 AM 2/19/2009
Modified by cobra tom at 11:09 AM 2/19/2009