Everybody goes Turbo here - Can N/A Supras be fast?
 

Yes, we all know MKIII's are insanely heavy and the best and fastest way to get it to run fast is to go turbo.

But what if someone is not aiming to run 11-12-13 in the 1/4 mile... What if someone would settle for a 14.5 secs 1/4 mile Supra, and his car is N/A? (kinda my case).

I've owned Turbo cars and know what it feels like, and it was originally my plan.. but today I was saying to myself: 200HP stock... I've read that the stock exhaust is quite thin and putting a big one would give you some more horsies. Then intake, header, and maybe something to the ignition? (Wider cables, coil blaster, MSD.. How fast (or slow) will the Supra be running?

Yeah, everyone says "you'll want more speed on the longrun".. yeah, and when I get to that point, I'll probably spend more money and get a 1JZ and mod it. But I'm talking about some more speed so my daily driver car isn't that slow. I don't care if I geat beaten by other cars, my excuse will be: my car weights a LOT, and it's not even turbo, so back off. =) Hehehe, just kidding. I was just asking coz maybe, for my actual needs, this could be economically my best option (I don't feel that huge need for speed right now.. Sure, later I'll get it back, but I could spend at least a year or two without a turbo car)..

My car is automatic, which pops up another question: Is there a better tranny than the stock N/A tranny? I know it's different from the Turbo model. What about the differential? I don't think mine has an LSD... is there a way to find this out?? It probably doesn't have one. Would a proper one give one more power in the first gears? (although it's not probably a good option as one would then go at 60mph and 4k rpm =p).

Just asking...

Oh!
 

And before anyone mentions it: Yes, I did some research.. couldn't find much, most people just go turbo. But I did some and found out stuff, like the thing about the exhaust, possibly "mild cams" (as the text described it), but not much at all.

bpm i/h/e possibly valves and lexus afmsounds good to me

well think about my mk2 supra.... n/a before i drop turbo on... i hit 15.1 on my mk2 stock... nothing... no exhaust... n ect... nothing... basic stock.... n i hit 15.1 on 1/4mile.... n happy with it.... n now... i happy with my setup on my mk2 supra... hehe... cause got turbo now... haha...

Can someone de-code this for me. :dunno:

About the NA 7MGE, they do go well. As you said, 200Hp is'nt bad, the car is heavy, but not that heavy, its around 1580 which is OK. I have a manual so cant say much about the auto but i'd imagine you'd get more out of it with a manual. I have a K&N filter, 2 and half inch exhaust form cat back (really only need 2 and a quarter), my engine has been fully re-built, i use Iridium plugs and top gun leads. My engine would be putting out a bit more than stock. The stock cams are pretty good, they seem to make good use of the engines power, they are different from the turbo cams. Dont be put off the NA by the turbo owners, you cant blame them for loving there turbos, the power feels great, turbo cars are addictive.:naughty: . If your engine is healthy, you will probably be happy with it. They go well and are definately not slow, maintain it and they stay strong.

I own an 86/88 NA, the previous owner bought a wrecked car...swapped a lot of parts...so im not sure what on the car is 88 and 86, but the tittle is 86 and the engine/trans is an 88 im sure of that, anyway sure the stock motor is great..it has a really nice powerband, and it runs good all the time. The thing that impressed me the most about it is the internals, and how well made these motors are. most of the parts in these motors would be a huge upgrade on some other motors, like american v8s for instance. But the thing that sukcs about that is, the motor is already at a pretty high hp/liter, which makes it kinda hard to modify any further. thats why the turbos are so poular. But sure, do a header, exhasut, intake, and try to work out a bigger mass air flow sensor off a lexus car like j3pz said. Should be able to get it up to about 230-240hp. the popular/good way to make a lot of power out of an NA motor is insane compression and race gas, and big cams. but that defeats your economical idea. goodluck with the car!

Lexus afm won't do any good... IIRC the housing is the same size with different electronics. People buy it and put larger injectors on turbo models to trick the computer into thinking it has less air going through, so the computer won't cut off fuel at 11psi. I think I explained that correctly but its 6am...

Hey!
 

I bought some rims today, they look insanely nice! Although car is too high, need to lower it a bit (stock suspension).

Anyone knows how thin is stock exhaust?

believe it to be 2and a half

do you mean 1580lb? its more like 3580lb. must be typo

POST UP SOME PICS!!

Heh.
 

Will post them soon!

To the other post: I'm sure he meant kilograms, which would be about 3,500lbs.

Sorry dude, i forgot, Its Kgs. Im Australian, thats what we use, not lbs.

oh ok i should have known that. well talking to you boys im gonna be a great converter...

And as Isphius said, the internals are good. In NA form they last and when you let the engine breath with intake and exhaust it gets the most of the 7Ms good bits. And i love that valve on the intake manifold. The one that opens around 3800 RPM to shorten the length of intake which allows the engine to make the most of its top end aswell as having decent torque and bottom end. A great idea, this is the first engine i have seen to use this system and for the gains you get i cant believe every engine doest have one.
Man, when i first bought a Supra i was almost put off the 7M all together from what i read, but after building one, and driving it, i am sold. There great engines.

Well, I am the original owner of an '89 Supra non-turbo and have had
significant increases in horsepower by adding a few bolt on parts which I
think you might be happy with as well if you're willing to spend the money.
1. HKS Exhaust 2. HKS SuperMegaflow filterchargdr
3. PaceSetter ceramic coated headers 4. Unorthodox racing cam sprockets
5. Apexi free flowing cat

All this hardware boosted my horsepower significantly and I'm happy to say
that I have no desire for a turbo as I'm still able to smoke a lot of cars off
the line.

acura/honda was the first do do this my legends have that but it open at 3k

Any car can be made quick. How fast do you want to go = How much money do you have? (typically)

Stay with your stock cams, they are good to run high numbers. Other than that, run the gamut of standard bolt-ons.

Thanks C-town. Do you know what year Honda started using it? Honda have done a lot of good things for Japanese cars, there a great company.

im so suprised no one said this...after intake then exaust throw a 75 shot of nitrous on it, sence the bottem end is the same as the turbo version it should be fine..i have raced a couple nice n/a supras and they seem to be pretty quick, you would be pretty much unstoppable...then after your done having fun..turn that bottle off and just be a sleeper

Haha..
 

Nitrous is like, fake power... temporary power.. =P

i believe honda started to experiment with this in the late 70's early 80s but its now used on almost every honda/acura

i agree, its not really the car itself putting down the power, its just like he said temporary, cheap power. any one can put no2 on a car and say its fast

i agree with the nitrous thing lol. i would still use it tho, just not count it as part of my bragging rights. just to beat cocky people. ;) Me and my friends all had a little street race gathering last night...it was the most fun ive ever had driving a car. i won...needless to say haha jk, but i beat a 2 liter golf, 99 v6 accord, a v6 olds (car was actually a lot faster than i thought) and a 97 maxima. the closest race was me and the accord....neck and neck till top of third gear.

Hrm...
 

I like the sound of the 98-02 V6 accord.

I've driven those, and I've driven a 2005 V6 accord, and the difference is quite noticeable. Well, from stock 200hp to 240hp, I guess it should be. The 03+ v6 Accord is pretty fast, and the interior is AMAZING, wow, some fucking car that is.

grrr
 

back to the weight thing ( damn honda. i don't drive a whale ), a xr6 turbo falcon weighs 1795kg, r34 skyline weighs 1666kg and has a more similar engine cc-wise. 1500kg aint really that much for a turbo 3L ( -ish ) i-6. who was it first called the supra a pig ?

Hrm...
 

I think the R34 is heavier because of the 4x4, which helps a lot in the takeoffs. I've always heard that the MK3's problem is the takeoffs...

N/A v Turbo
 

I have an 89 NA Supra and there is no way I would call this car slow. I am getting my engine in the best possible shape before I do any upgrades (except for the 2 1/2" Magnaflo Cat I bought to get me through inspection) and I'm quite happy with the stock ride. This summer I may go with a header and open the pipe to 2 1/2" to the back, but I've done 140 mph on the highway and if that ain't fast for a car I spent $1900 on then maybe I don't know what I'm talkin about. Also, from what I see in the engine bay of turbos, I'm rather happy that I'm stuck with my NA, as at least I can work on the friggin engine without lifting it out of the car. Enjoy your NA and don't be envious. You got a great car and it'll probably last a lot longer without the turbo.

My 2 cents,

James in NJ

Hrm...
 

Yeah, thanks for your opinion, good one.

The 7M turbo looks very tight in the engine bay, but have you seen a 1JZ in there? It really cleans up that engine bay. I'd love to have a 1JZ supra...

The bad thing is, in here, most shops that install the 1JZ, they WELD the engine mounts somewhere. I don't like that. I know of a guy who did a much cleaner engine swap, no welding. I don't know exactly how he did it. I've heard that with an 89+ crossmember one can do the swap without welding anything, the engine just fits perfectly. That engine has a reputation for never breaking, just like the 2JZ. No head gaskets, not anything. I'd love to get my hands on a decent-mileage 1JZ... 280HP STOCK? Are you kidding me? One could get over 300 to the wheels with cheap mods and I'd daily drive the fucker. =) That's my dream :P

If you want to dosomething for free, not really recomended thou. The front of my stock air box was broken, so i decided to cut it out completely, so now the front of my airbox is just an open cylinder, and i have a k&n filter already. this made a pretty noticeable increase in power, and it sounds awesome. it has that 4 barrel v8 intake sound right around 3k rpms. It might get annoying to some people but my exhaust is pretty loud though so i dont really care.

so basicly its just a open filter?

( understand i'm not a pro so correct me if this is contrary or just if you feel like it )

was lined up against a subaru at the lights ( heh this is half a year before my head gasket problems and subsequent power gain. dunno what'd happen these days ) - loaded up the trans and let it go. the subaru kept a little behind me all the way. started catching up at the higher speeds but mine was an auto and i really messed my quasi-manual shifting ( *sigh* ). anyways, my round-about point is that in the takeoff i had the guy. supras arent *too* heavy for this shit, and if you're not depending on the turbo for half of your power ...

Yes, but with a shroud around it.

Hrm...
 

I need to change piston rings on my N/A. I think I will stay N/A. I have invested some money in my car, but all exteriorwise and suspensionwise, and rimswise.. heh. If I'm gonna spend money on an engine, it has to be on ONE engine. So if I spend even the most little amount of money on an engine, I don't want it to be an engine I wont use later. This is my ONLY car, and daily driver.. so I'm not gonna go turbo. Not for now... maybe in a year or more, when I get another car, newer, to drive daily, and this is just for kicking ass on the weekends.

Since I'll have the engine opened up... I was thinking of doing a few mods. First I wanna go manual tranny. I'm already looking for the parts. All my previous cars have been manual, I like manual. plus, I've heard that the 7M-GE manual is smoother than the 7M-GTE, heh, that's actually good! ...

I was thinking of going with those OBX headers that I once saw people discussing on this same forums. That, and an improved aftermarket air filter... should I do the air filter pipe too? Which one is good? Can someone give me a link or something? Remember I'll be N/A.

I already did the 2.5" exhaust, with two resonators and a crappy muffler. I think the downpipe is stock, does this affect in anyway?

Besides the headers I want, and the air filter, the other upgrade I wanna do is the ignition. I've seen sone MSD units, and MSD 8.5mm cables, and Iridium spark plugs, in 935motorsports... they make it sound as if it improves fuel economy, throttle response, and pretty much everything. Is this true? If it is, and if I'm stay N/A, I can afford to do this few little BPU's (less money than getting turbo engine and turbo tranny).

I just want the car to move "nicely", ya know... not incredibly fast or anything, but not as slow as my mom's Daihatsu Terios and it's 1.3 liter engine.

Can someone point me to somewhere where they sell a TOYOTA seals/gaskets kit for the engine rebuild?? (online store!) .. and if someone has a link for any of the other stuff I mentioned that I want, that'd be awesome. Thanks.. :)