400 hp mk3

[crucifudge]

Hey, i'm new to the supra world, and trying to see if this is possible. There is a few supras i'd like to check out, but they are all an hour + drive from my house so i'd like to ask a few questions before I check them out.

Used to driving sporty hondas, but since i've been commuting to school (88 miles all on highways) i'm starting to want somehing thats geared longer, and sprug a bit softer, so I'm not worn out every drive. However, with the light weight, having a 2100 lb lightend honda push 200 hp is plenty fast.

But now i'm looking at a more comfortable car but still as fast as my old hondas, and narrowed it down to a (mk3) supra or an 80's 300zx. The supra looks better, and the interior seems nicer so I belive i'll go with that, I just have a few questions maybe you guys could answer.

First, around what rpm is a turbo supra tranny at 80 mph?

Second, whats the limits of the internals on the mk3 turbo supra engine? (my goal is 400ish crank)

Third, how hard is this car to work on in the engine bay? One thing nice about the hondas was the engine was so small in the bay you could reach everything easily

Forth, If I were to find a car for 2000 (witch seems doable), would the 3000 I have left over be enough to get a reliable 400 hp? I belive I have the skills to do the work myself, assuming the engine bay is impossible to work in, all except for tuning.

Fifth, Wtih that 3 grand on reliable upgrades, I doubt i'll beable to find a quick spooling turbo, so how much lag do you think will exist?

Thanks alot.

EDIT: while I have this thread...

Would I beable to get the 400 hp on new intake piping, bigger intercooler, 3" exhaust, boost controler, and a cheaper (maybe a c26?) turbo + tune?

[bgrieger]

Originally Posted by crucifudge

...But now i'm looking at a more comfortable car but still as fast as my old hondas, and narrowed it down to a (mk3) supra or an 80's 300zx. The supra looks better, and the interior seems nicer so I belive i'll go with that, I just have a few questions maybe you guys could answer.

First, around what rpm is a turbo supra tranny at 80 mph?

on a turbo 87-88, youre pushing probably around 3200, but it's been a while since I've driven mine, so I'm half way guessing. 89+ are a little different due to a gearing change.

Originally Posted by crucifudge

Second, whats the limits of the internals on the mk3 turbo supra engine? (my goal is 400ish crank)

Stock, known good well maintained internals will see 500 happily all day.

Originally Posted by crucifudge

Third, how hard is this car to work on in the engine bay? One thing nice about the hondas was the engine was so small in the bay you could reach everything easily

more cramped than honda, a joke compared to the 300. The supra isn't too bad to work on once you get used to the layout. The 300 you practically have to pull the engine for any work that involves more than a tune up, and you actually do have to to work on the turbos.

Originally Posted by crucifudge

Forth, If I were to find a car for 2000 (witch seems doable), would the 3000 I have left over be enough to get a reliable 400 hp? I belive I have the skills to do the work myself, assuming the engine bay is impossible to work in, all except for tuning.

read up on blown head gasket. The supra was famous for them, and to guarantee you have an engine and head up to the task will suck the first grand or more out of that. On the cheap, you might get 400, but I wouldn't do it that way for a daily driver.

Originally Posted by crucifudge

Fifth, Wtih that 3 grand on reliable upgrades, I doubt i'll beable to find a quick spooling turbo, so how much lag do you think will exist?

you said it...money talks. Get into a GT35R and you will spool similar to the stock turbo, and easily flow to 500hp. That turbo alone is well over a grand, plus a manifold, downpipe, exhaust, intake, computers, fuel system, wastegate, intercooler etc. As I said above, a big chunk of the 3000 should be spent on reliability of the stock equipment. With 2k left, I don't think you'll be shooting for 400. The turbo replacement will blow the budget. You can upgrade the stock turbo and add the supporting mods for 2k or so, which gets you into the 300's at the wheels, but 400 daily driven is out of your range IMO. Some people may make it alright, most don't.

Originally Posted by crucifudge

EDIT: while I have this thread...

Would I beable to get the 400 hp on new intake piping, bigger intercooler, 3" exhaust, boost controler, and a cheaper (maybe a c26?) turbo + tune?

youre on the road to it, but as above, this combination will only see you into the low to mid 300 range reliably. You also need fuel system upgrades and piggyback electronics to play.

[akn112]

from what i've read, getting past the fuel cut in the supra is the biggest thing (aside from the headgasket).

[shaeff]

Originally Posted by akn112

from what i've read, getting past the fuel cut in the supra is the biggest thing (aside from the headgasket).

nah, that's easy.

you could go the dinosaur route- lexus AFM, 550cc injectors, walbro 255lph fuel pump, and an adjustable fuel pressure regulator,

or

MAFTpro, fuel pump, AFPR, and injectors. (which gives you MUCH more versatility, tunability, the addition of boost control as well as speed/density, which is removing the AFM for those who don't know)

-shaeff

[Jeeves]

I am still pondering ditching all my AFC/VPC/AVC-R and going MAFTpro. I like the idea of timing control/monitoring

[crucifudge]

Jeeves, I see your putting out the numbers I'm looking for, while still not pushing much boost (I was expecting more along the lines of 15 or 16 lbs). Do you have a thread with the build up of your car?

[Jeeves]

Not really. While I am everywhere on the web, I like doing things 'my way' and attempting to be a 'unique individual' about it all. Here's roughly what I've got:

- 0.020" Overbored JE Pistons
- ARP Rod Bolts
- Clevite 77 Bearings
- Machined/balanced bottom end
- HKS 1.2mm Metal Head Gasket (Machined both the block and the head to 40 RA smoothness first)
- No real headwork (reshimmed buckets to OEM spec, redid several valve guides, 3-angle valve job, nothing special)
- ARP Head studs
- HKS Long Runner Cast Manifold
- HKS/Garrett 57trim T4 Twinscroll Turbo (V-banded for exhaust)
- HKS External Wastegate
- Stock Ignition/Fuel (minus a Walbro 255lph fuel pump, and removing the J-tube)
- Hugeass Blitz front mount intercooler
- 3" exhaust from Turbo all the way back, no cats or restrictions
- 3" Greddy SP Exhaust
- HKS VPC (Speed density converter)
- Apexi AFC Neo (Fuel Control)
- Apexi AVC-R (Boost Control)

So, with all that totalled, I'm far above your price. But that's what I've got done. On 10psi I was neck and neck with C6 Corvettes, passing Audi RS4's and playing with 470hp Blown Cobras. It's not the cheap, common way of doing it (especially the rare HKS parts in there) but it's how I went about it. I bought the car stock, and she's come a longgg way. Hope this helps or sheds some light on something.

[Supra469]

Originally Posted by Jeeves

Not really. While I am everywhere on the web, I like doing things 'my way' and attempting to be a 'unique individual' about it all. Here's roughly what I've got:

- 0.020" Overbored JE Pistons
- ARP Rod Bolts
- Clevite 77 Bearings
- Machined/balanced bottom end
- HKS 1.2mm Metal Head Gasket (Machined both the block and the head to 40 RA smoothness first)
- No real headwork (reshimmed buckets to OEM spec, redid several valve guides, 3-angle valve job, nothing special)
- ARP Head studs
- HKS Long Runner Cast Manifold
- HKS/Garrett 57trim T4 Twinscroll Turbo (V-banded for exhaust)
- HKS External Wastegate
- Stock Ignition/Fuel (minus a Walbro 255lph fuel pump, and removing the J-tube)
- Hugeass Blitz front mount intercooler
- 3" exhaust from Turbo all the way back, no cats or restrictions
- 3" Greddy SP Exhaust
- HKS VPC (Speed density converter)
- Apexi AFC Neo (Fuel Control)
- Apexi AVC-R (Boost Control)

So, with all that totalled, I'm far above your price. But that's what I've got done. On 10psi I was neck and neck with C6 Corvettes, passing Audi RS4's and playing with 470hp Blown Cobras. It's not the cheap, common way of doing it (especially the rare HKS parts in there) but it's how I went about it. I bought the car stock, and she's come a longgg way. Hope this helps or sheds some light on something.

Aweseome build list there.......

How's your stopping power and suspension? Are they still stock?

[Jeeves]

Originally Posted by Supra469

Aweseome build list there.......

How's your stopping power and suspension? Are they still stock?

Stopping power is stock, and needs a SERIOUS upgrade. I'd kill for the brembo or wilwood set, but I can't justify $1,500+ on brakes. I'm assuming my next round of 'mediocre' upgrades will include braided brake lines, and either slotted or drilled rotors. Pads are almost moot unless I'm aiming to eliminate dust.

Suspension, I've got front and rear cusco strut tower bars, new Tokico iluminas (TEMS compatible, but disabled) struts, and Eibach ProKit lowering springs. It has an issue somewhere in the rack though, so I'll be replacing it at some point. In regards to wheels, I've got 1998 Mk4 TT wheels, with 235/17 up front and 285/17 in the rear.

[94CoupeV6]

^ Your Supra is the sex. I really want to get my hands on a MkIII Supra turbo or a MR2 turbo soon. This Camry V6 just is too damn slow for me.