okay a little help?
 

im planning on buying a toyota supra. i want to put alot of performance stuff into it. about 550+. i hav no idea where to start and i really dont want to spend a ton of cash. i know that im putting nitrous on it. i know on the interior that im adding gps. oh and also i am putting a roll cage in it for saftey. im pretty sure i want to have twin turbos. do i need to upgrade the transminsion or the drive train, torque converter, pinion gears, rear end, ect. and also i want to have switches for start, fuel, ect. i want to lower it, do i need to "upgrade" the suspension? basically i want sumthing that will smack those little hondas and keep up with ferraris and vipers.

In order for me/us to provide you with an accurate set of recommendations, please answer ALL FIVE of the following questions:

1. What kind of "Toyota supra" are you planning to buy? Since you posted in the MKIV section, can I assume you're talking about an MKIV TT?
2. Do you mean 550+ hp ...OR.... 550+ rwhp??? Note that there's significant difference in what's required for the build-up to achieve these two power goals.
3. Do you want sequential twin turbos or parallel twin turbos? Note that the only available sequential twin turbo kit at the moment is the oem sequential twin kit, and it won't make 550rwhp without a huge wet-shot of nitrous through the entire rpm range. If you do mean parallel twin turbos, then why do you think you want that rather than a single turbo?
4. What type of racing do you want to "smack" vipers, etc. in: drifting? autocross? drag racing? road racing? top speed?
5. When you say "i really dont want to spend a ton of cash", are you talking about the cash for the upgrades alone, or the cost of the car PLUS the upgrades? If it's car+upgrades, note that an Mkiv TT in good shape will probably run you about $20k or so...and if you want 550+ rwhp through an auto you're looking at probably $5K-$10K in upgrades on top of that. I can get more exact with the costs when you've got all of these questions answered...

Here's what I can answer, based on the info you provided:

• If it's the mkiv tt's auto tranny, you would need to upgrade the tc&tranny for 550rwhp, but not for 550hp. A 6spd will handle either (although you would need an aftermarket clutch for both 550hp or 550rwhp).
• To lower an mkiv, you'll need either Koni shocks (2 height settings), aftermarket springs (eg. Eibachs), or both, or a fully height-adjustable coilover setup (eg Tein).

That's gunna slow you down considerably.What kind of budget are you looking at? 500 hp is a pretty expensive number.

Actually, he could achieve 500hp (425rwhp though a 6spd) with only bpu mods to a 'healthy' mkiv tt, high boost (20-22 psi), and some race fuel. On the other hand, I agree that "550+" rwhp would be an expensive number, no matter how you cut it. Got to pay to play...

ive been looking for awhile for a supra and havn't really found one wit not a lot of miles. rite now at this moment im looking at a 23,000 bank account.okay maybe 550 rwhp is a little lofty. basically i hav no idea wut i want, wut are the pros and the cons of twin turbo and single? i want nitrous, wuts the pros and cons of dry shot, wet shot, and direct injection. wut i want from the car is to be a daily driver. but on the weekends to go "street racing" i also want ot run it of pump gas. im going to UTI college this summer for school and was looking for a little extra cash from racing. wut i want from u guys is to list of mods that wont run me more than about 11,000 that will give me 425+ i guess rwhp or regular hp idk the difference

To answer that question, I need to know what kind of "twin turbo" are you talking about? There are two very different types of "twin turbo":

• Sequential: The Mkiv Supra Turbo (TT) only came with oem sequential twin turbos. Sequential twins outspool parallel twins, which makes them perform better overall, for most driving situations (including daily driving and drag racing). Note that there's no such thing as an off-the-shelf aftermarket sequential twin turbo kit for the Mkiv Supra Turbo.
• Parallel: All aftermarket (i.e. upgraded) turbo kits for the Mkiv Supra Turbo are single turbo or parallel twins. The turbochargers operate in parallel, which spools more slowly than sequential twins.

A single turbo and parallel twins perform about the same, but a single turbo is less expensive. There's a bit more related info on this older thread:
http://www.toyota-supra.info/forums/...2350#post32350

If you only want 425rwhp, and you can get that from the oem sequential twin turbos, then why do you think you want to run nitrous too? You can get 425rwhp without nitrous from a 'bpu' Mkiv TT Supra. Just do the 'bpu' mods listed here (which will cost you FAR less than $11K in upgrades), put in some race fuel and run high boost. On the other hand, if that $11K will be burning a hole in your pocket AFTER you've purchased your Mkiv Supra Turbo AND done all of the maintenance on it (timing belt, tires, etc.), then you can shoot for more than 425rwhp.

Pump gas is a problem for any relatively small displacement engine getting a lot of its power from turbo/boost. The more boost you run, the more octane you need. If you want to get 425rwhp+ reliably from pump gas, you'll need a methanol+water injection kit.

For any one car/setup, "hp" is always less than rwhp, since rwhp is the power at the tires - and has already been reduced by driveline loss. "hp" refers to horsepower at the crankshaft (pre-driveline loss). More info here:
http://www.enjoythedrive.com/content/?id=26050

Also, you still haven't fully answered a couple of my previous questions:

1. What kind of "supra" are you planning to buy? Since you posted in the MKIV section, can I assume you're talking about an MKIV TT? ...Or an n/a (normally-aspirated/non-turbo) Mkiv? ...or an mkiii? What? Note: your most affordable way to go really fast in the 1/8th mile from a dead stop is a foxbody rustang, not a supra...
2. What type of "street" racing do you want to "smack" vipers, etc. in: From a roll on the highway? From a dead stop? 1/4 mile? 1/8 mile? Any turns/drifting/twisties? etc.

Lastly, note that an Mkiv Supra TT in good condition will cost you about $20K, so if your current bank account is $23K, that only leaves $3k for upgrades (not $11K)...pardon my confusion, but where will the other $8K come from?

I'm not asking all of these questions of you just to be difficult. I really do need all of these answers from you, about exactly what you mean, in order to properly & fully answer your questions.

well idk wut kind of supra i want idk how many different kinds there were
 

idk supras came with turbos from the oem, hmm interesting. i know wut year i want nothing older than a 93'. the reason that im interested in supras is that my camero insurance was over $500 a month. and when i saw smack vipers, i was quoting a twin turbo kit i was reading about. it said that it beat most ferraris almost all bmw's and every viper on the road today. it was about $6 grand. and the reason i want nos is i saw on 2fast 2furious that that supra had had nitrous. idk it was appealing. and yes "bpu" mod are less expensive. but idk if i can afford the supra plus mods. the 23,000 was for buying the supra and putting in and buying the upgrades. basically i just want a supra, idc if its a twin oem turbo supra or a non turbo supra. i know the tt is like the holy grail of supras. but it has a cost that will leave ur walet saying holy crap. if i get a non-turbo supra can i upgrad to a supra tt and still make pretty good rwhp. im going to give u guys a little peak to where i live. where i live everyone has those stupid high reving hondas that get on my f***'n nerves. i want to buy AND build a supra that will leave them drewling, with a budget of 23,000. i wud apprieciate it if u guys would list "bpu" mods that give me alot of bang for my buck. thx

Ok then, it's an MKIV Supra, either TT or N/A (normally aspirated / non-turbo).

Insurance for an MKIV Supra probably won't be any cheaper...especially if you get a TT.

You can get a single kit for about $4 grand that will perform just as well as that parallel twin turbo kit (also note that twin turbo kit you read about was probably an HKS).

Ok. The nos kit will be at least $1k (with all of the supporting electronic controls), and you'll have to spend a good bit of time on the dyno testing & tuning it to be sure it's safe & consistent (probably at least another $1k or more in install+testing+tuning+dynotime). Also if you pick an mkiv with an auto tranny, the nos may cause the oem tranny to 'go' earlier than you'd expect unless you get it 'built' (a built auto tranny would be another $3k).

Like I said, a tt in good shape will run you about $20k...which won't leave you much $$$ left over for upgrades.

You just asked a very complicated question. First of all, you'll only save about $5k (or less) by starting with an n/a mkiv instead of a tt. Next, note that a full tt engine swap (complete 2jz-gte + harness + ecu) will cost you $3k or more in parts and probably about $1k or more in labor. After all that, you still won't have a full tt, because of the tranny, the diff, the brakes, the suspension, etc., etc. In other words, sure you can upgrade to tt, but to get to a full tt it'll cost as much or more than if you'd have simply got a tt in the first place. (ime/imho)
I honestly believe that $23K isn't enough to build a Supra that will leave them "drewling". It is enough to put together a 400rwhp+ 'bpu' Mkiv tt though, which will be plenty fast. All the mods you need are listed at the link I already provided in my post above. Here is the link again:
http://www.mkiv.com/faq/faqtt.html#bpu1

...I can't promise you'll have enough $ left over for the full nos kit+install+testing&tuning, since your $23k honestly is barely enough to cover the cost of a good mkiv tt plus 'bpu' mods (plus maybe a set of rims & bfg drag radials if you get very lucky finding a great deal on an Mkiv Supra TT).

Although I can see how the movies made the supra such an appealing car ,it's not the best way to choose a car.I wouldn't be in a giant hurry for the nos either ,for two reasons.1: Nitrous is considered "hazardous material" and illegal to have in your car even if it's not hooked to anything (I acualy tracked that one down in the "ORC",the cops bible.The law is very vague leaving a lot to the officers discression) 2: Although others may not agree with me ,I have always viewed nos as being the last resort after you have done every mechanical thing you can do get HP and don't have any other options but want just a little more.

What your looking for in a car seems to be a pretty tall order.I would recomend that you spend some decent time researching on the internet what cars you want and narrow that list down.It took me quite a while to settle on three cars and another year before I actualy bought my supra.My list was -MkIII Supra ,1986 Shelby Charger Turbo ,and a "Savanna" RX-7.A small list but not nearly so constraining.I chose those cars because I wanted cars that had engines with good history ,cars with above average suspension or easy to upgrade ,and rear wheel drive.Sounds like you want something that runs in a straight line real fast and makes people drool.

so u guys think
 

so u guys think tell me if im wrong. buy a supra tt, "bpu" it out (exhaust, downpipe, boost controler,ect.) i looked under the "bpu" site and i was wondering if i got a supra tt should i replace the turbo. oh and does the tt cum wit an intercooler. shud i upgrade anything else, like in the cooling system. like the water pump, radiator,ect. is a boost controler like a guage like a tach or is an actual cpu? oh and suspension wise is there anything that needs to be upgraded beside lowering.

Yep, all good so far, except you forgot the GReddy BCC to eliminate fuel cut when you raise your boost. I know you said "ect." (meaning 'etc.'?), but this device is critical.

Also, in my experience, the exhaust is optional at 'bpu' level. It might look cool, but it won't make you any noticeable amount of additional power until you're trying to push more than just bpu.

Do you mean "replace the turboS"? Why do you think that you might want to replace them? Again, the stock twin (i.e. two) turbos are good to about 425rwhp or more (6spd) with high boost & race fuel. Of course, this is only true if the Mkiv Supra TT that you purchase is in good working condition.

Yes, the Mkiv Supra TT does already "cum wit" :rolleyes2 an oem (side-mount) intercooler.

Nope all that is just fine oem - there's no need to upgrade these items if you're going to drag race & daily drive.

A boost controller is a device that allows you to control your boost, by changing when your wastegate opens. Some boost controllers come with a boost gauge, or you can purchase a boost gauge separately.

You can even go with a mechanical boost controller that definitely does not have a gauge and it also does not have a cpu. It just controls your boost.

Also note that you can very cheaply raise your boost by simply clamping off one hose! Obviously this method of controlling your boost also doesn't have any gauge, nor does it have a cpu...it's just a ten cent hose clamp!

Why do you think you need to lower your Supra? The stock suspension works quite well for both drag racing and roadracing. In fact, many suspension changes are actually designed to improve roadracing/autocross performance only, and would make the car slower for drag racing.

If you really must to dump a ton of cash on your suspension for no reason whatsoever (since you're still talkin' 425rwhp+, right?), then you could purchase HKS' drag coilovers...

Don't forget to budget a good chunk of $ for simple maintenance on your car. Z-rated tires (costing $300+ each), timing belt change (if necessary), new coilpacks & harmonic dampener (depending on the mileage of the Supra you buy), synthetic oil changes, etc. all cost much more than any 'regular' car. Never forget that you'll be purchasing a $50K+ GT sportscar, and it costs much more to maintain than a corolla or a civic...

anything?
 

so basically bpu out a supra and im set. anyhting else?

If you want a good launch from a dead stop, you'll need some good drag radials (I strongly recommend BFG and not Nitto).

If you want a great launch, you might need to consider aftermarket wider-than-stock rear rims, so you can get a wider drag radial. You can fit an 11.5" wide rear rim and 315-width rubber inside the oem rear fender if you trim the fender lip a bit... (the oem rear rim is only 9.5" wide).

If you still have some $ left over after proper maintenance to your Supra and your bpu modifications, then I think nitrous is a good option. Imo, go ahead and put that $ towards getting a good 'wet' nitrous setup (with all of the electronic controls for rpm, wot, purge, heater, in-dash gauges, etc.), getting it installed properly, testing it and tuning it on the dyno. You might save this step for after you've got some experience drag racing your bpu mkiv tt.

heres a good question, say i want to run cooler, any suggestions? lol i was looking at sum tt's the cheapest on is 29,000 but most of the work is already done. i was wondering is if went to the junk yard and pulled one out wud it be worth my time and money. or shud i just keep searching. cuz i found a couple supras in my price range but they had alot of miles on them. 150+

Sorry I don't understand. Do you mean cooler-looking? ...or cooler temperatures (as in engine/oil/coolant)? ...or are you talking about better air conditioning inside the cockpit? :dunno:

If you're talking about cooler-looking, then a good set of aftermarket rims, and a nice 'catback' exhaust system will add a lot to the looks of the car. You could also upgrade the stereo too, since the oem Mkiv Stereo uses sound system technology from the early '90s. Again, be sure those aftermarket rims are a lot wider than stock (imo at least 11" wide in the rear), in order to get better traction for drag racing. For more advice on looks/bling, let's wait and see exactly what we're working with after you purchase your Supra...

For what it's worth I say keep looking. Fixing up a wrecked Mkiv Supra Turbo properly will be very, very expensive. Don't forget this isn't a pickup truck or a geo metro. It's an ultra-high-performance GT sportscar. For example, if you take a written-off Mkiv Supra TT to bubba down the street to pull and weld the frame, then to bubba's 'kissin-cuzin's ex-husband' for bodywork&paint, it's very doubtful that you'd end up with anything close to the reliable high performance capability as a 'good' (un-wrecked) Mkiv TT.

wut i was talking about when i said cooler was like engine tempetures

If you don't mind me asking, why do you think you want to run cooler engine temperatures? In other words, what on earth would make you think that the Mkiv Supra Turbo's oem engine cooling system is anything but more than capable enough to keep the engine sufficiently cool?

idk. u know heat the enemy of engines. idk if i was road racing at high speed wouldn' t ur engine get really hott. i was just wondering if i cud get it to run cooler so i dont have to worry about a blown engine

True, but it's also true that you can't make power without heat. So I guess that means that heat is the "enemy of engines" but the friend of horsepower? ;)

Whoa...hold on there...you're going to "road race" this car too? This is the first time you mentioned roadracing in this thread. If you're going to seriously roadrace too, then sure, you might be able to take advantage of some cooling system and suspension upgrades. This is one of the reasons I was asking those questions earlier. If you don't answer it, please don't expect accurate advice. Here it is again:The oem cooling system is very good. In other words, no (given everything else we've discussed in this thread for your application & setup).

You'll only blow your engine if you run too much boost on pump gas. Upgrading your radiator (for example) won't prevent that...

okay when my version of road racing is like, u know in like 2 fast 2 furious. that first race thats wut im ging to do with it, and prolly drag for fun. oh and another question i found alot of supras on autotrader that were in my price range they were non turbo and non targa. how hard is it to make it into a SIMALAR set up like the tt and wut is targa? and wuts a safe amount of boost on pump gas? oh and alot of the supras i found were automatic, how hard is it to turn them into manuals

So you're seriously going to jump partially open drawbridges???? :rolleyes2 If so, a monster truck might be a better choice of ride...

Let's start this way: Please answer these two questions:

1. Will you be turning corners while you're racing? (i.e. during the race, do you have to do multiple high-speed turns?)
2. Will you be racing from a dead stop, or from a roll, or both?

Targa is the removable roof...like T-tops, but all one piece.

Unfortunately, to me, there's nothing similar to an Mkiv Supra TT. Just mho. You can try going over to the DSM forums and ask about a turbo'd awd eclipse I guess...

On 93 octane pump gas you can safely/reliably run about 15psi, with an mkiv tt using an unmodified oem ecu to control the engine.

so its not a good idea not to buy a supra that isn't a turbo, dang those are alot more expensive. and wut about if i did get one how wud i go about putting a turbo in it. and u didn't answer my other question. how hard is it to turn an automatic to a manual if i got a non turbo, because most of the automatics were non turbo?

Sure, but just ask yourself why you want an Mkiv Supra TT. I'd suggest probably because the Mkiv Supra TT is a rare & amazing GT sportscar. You don't really honestly expect you'd be able to get a rare & amazing GT sportscar for cheap, do you? In other words, this car has held its value well in the market because it has proven itself to be an exceptionally capable high-performance vehicle. That said, you still can find them for a fair price, if you've got cash in-hand and you're ready to fly to another city check out the car as soon as it comes on the market...
Several suppliers sell normally-aspirated to turbo (n/a-T) conversion kits for the Mkiv Supra. Here's an example:
http://www.boostlogic.com/parts/supr...oKitStage2.htm
...note that this kit alone won't make an n/a Mkiv Supra into a full oem Mkiv TT Supra, since the transmission, differential, brakes, suspension, etc., etc. are all better performing components equipped on the full oem Mkiv TT Supra.
Here's an article on turning an auto into a 6spd:
http://www.mkiv.com/techarticles/aut...wap/index.html
...it's a hard job and it'll probably cost you between $5k and $10k depending a lot on where you get the parts (new or used) and how much of the work you do yourself versus paying a good shop to do the work for you.

Note that if you're going to be drag racing, an auto mkiv supra tt is faster and more consistent than one with a 6spd. Although I confess I still don't understand how you'll be racing this car (jumping drawbridges? - see the two questions from my previous post), it's possible that you'd actually be making the car slower for your application by converting it to a 6spd...

Not that it really matters, but what you're saying isn't accurate. Most of the Mkiv Supras with automatics were in fact, twin-turbo:
http://www.mkiv.com/specifications/s...ail_sales.html
Out of all of the 5,111 autos sold in the US, 2,939 of them (57.5% of them) were TT's.

wut i was talking about is wut if i got a supra that was a non turbo and an AUTOMATIC, how hard wut it be to put a turbo in it and turn it into a manual? the reason im asking is that i was planning on spending sum money on the suspension/handeling anyways so why not get sumthing that cost a little less and that i cud spnd a little of time on? or is it not worth the money?

Please read my previous post. I already answered that question, with these two links:

1. http://www.boostlogic.com/parts/supr...oKitStage2.htm
2. http://www.mkiv.com/techarticles/aut...wap/index.html

Here's a quote from the first link:

Quote:

This kit contains everything you need to convert your Non Turbo MKIV Supra ... into a turbo charged sleeper.

...and here's a quote from the 2nd link:

Quote:

This is a guide for Automatic to 6-speed transmission conversion for the 93-98 Supra...

I don't know how I can make it any simpler for you...

Again, na->t kit $5K + install (~$2k). Auto->manual swap $5k-$10k. That's $12k-$17k for those two changes. If you're lucky, you'll find an n/a mkiv auto in good shape for $15k. After the swaps you mentioned, you'll probably be up to $27k, which is more than enough to get an Mkiv TT in good shape (probably one with a 6spd too).


I still don't know why you want a manual tranny if you're going to be racing from a dead stop...auto is faster.

Also, some "suspension/handling" mods will make your car slower when racing from a dead stop. All the racing in f&f 1&2 was from a dead stop, right?

If you're serious about roadracing (i.e. the art of high speed turns), then plan to take some driving lessons at a local roadrace track. A good roadracer in a crappy/slow car will consistently & totally embarrass an amateur in a "fast" car when roadracing.

did they make a supra that was non turbo 5speed? and was targa?http://www.autotrader.com/fyc/vdp.js...=1&cardist=223
also i was going to give him 10,500 for it becaus eof all the miles, shud i find a wrecked supra to replace the engine or keep the one thats in and rebuild it and put a turbo in it?

I already posted this link too, which will answer your question and anything similar:

http://www.mkiv.com/specifications/sales_numbers/retail_sales.html

:crazy: For what it's worth, I really doubt that Cosmo Motors will go down that much on the price. In fact, I'd probably bet my life on it rofl.:rolleyes:

Why would you want to "rebuild it"? As far as I can tell, the advertisement doesn't say that the current engine is blown...

Either way, ime, it'll cost you about $7K for that one change alone...and (like I already posted) you still won't have the transmission, differential, or braking that you'd get if you started with an mkiv tt in the first place.

go look at the car u think its worth it?

I'm pretty sure I already answered that too. If you want an Mkiv TT, it'll cost more for you to convert it than it would cost you to start out with one. $15,995 + $5K+ for an na->T kit and you still don't have anywhere near the vehicle that you'd have gotten by getting an Mkiv TT in the first place...

I have to go based on what you've already said about your performance goals, and what I believe that Cosmo Motors will take for that car. I believe you'll spend less money overall, and end up with a more suitable vehicle for you needs, if you go for an Mkiv TT to begin with. In other words, no, imho probably not.

Please keep us informed as to what you end up doing...