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what does it take to run a low 12?

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Old 07-16-05, 03:06 AM
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what does it take to run a low 12?

what do you think it would take to run a low 12 with a fc? what turbo, port, ect...
Old 07-16-05, 08:46 AM
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You don't have to run a turbo to get into the 12's. You also don't have to be ported. Power to weight ratio!!!

http://www.rx7.com/accel_calculator.html

Have fun.
Old 07-16-05, 09:39 AM
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Show me a stock port non turbo FC that runs twelves.

Maybe on juice, but i highly doubt it.
Old 07-16-05, 09:42 AM
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well it COULD, but it would have to weight in the area of like 1500lbs or maybe less. So it would basically need to be backhalfed, and everything superlight. That would cost more then just turboing the car. Just get a turbo motor, make around eh 350hp and ull be fine
Old 07-16-05, 10:07 AM
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yeah.... you just need one of thsoe thi8ngs that move up and down instead of the engines that spins in a circle
Old 07-16-05, 02:36 PM
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A big sack full of money.
Old 07-16-05, 02:53 PM
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Originally Posted by bigdv519
You don't have to run a turbo to get into the 12's. You also don't have to be ported. Power to weight ratio!!!

http://www.rx7.com/accel_calculator.html

Have fun.


riiiight....


rotaries take to forced induction better than non forced, good luck pulling a 12 in an n/a. maybe if you put a 3 rotor into a go kart.
Old 07-16-05, 03:43 PM
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well, I could see this happening , but I see a track-car in my mind. Not a DD.

I guess you could get close under big boost. and as said above, lots of $$$$$$$
Old 07-16-05, 04:36 PM
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Get a KP61 starlet, 1550lbs, rwd. Throw a 200hp *ported/carb'd" 13b in there and you'll have a 12second car. A non-turbo, non-ported 13b FC running a 12sec 1/4 seems rather fanciful.
Old 07-16-05, 05:08 PM
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Strap a rotary engine to a skateboard and you will go faster than 12's.

It is about power to weight, like it or not.

The question is pretty vague, you have to tell us your goals, your budget, and how mch comfort you are willing to sacrifice.
Old 07-16-05, 08:26 PM
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$$$$$$$$$$$ oh and umm $$$$$$$$$$$

My fiend carlos swaped a carbed 12aTT into a starlet. twin t4's

And a carbed 12a into his station wagon. :-D
Old 07-16-05, 08:35 PM
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heh, put a big single into a starlet and it can do 8's.

but this thread is about non turbo.
Old 07-17-05, 12:00 AM
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An n/a FC into the 12's with no porting....sorry, is not gonna happen.

4.33 diff, port/pinned block, 60-1 turbo, big f/m IC, 1600cc inj, Rotary Pro Pack or similar, 3'' exhaust, good EMS, good boost controller, Walbro + inline pump, 9lb flywheel should be enough to run low 12's on pump gas at about 15-18lbs of boost, daily driver too.

On my previous T II I had that combo but with a TO4E and 1200cc inj. + 1 850cc, my best was 12.68 at 18psi.
Old 07-17-05, 12:16 AM
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Actually, this thread is about turbo.. And I am curious as to how much $$ you all think it takes to get into the 12s...
Old 07-17-05, 12:17 AM
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Originally Posted by RX_AV8TR
An n/a FC into the 12's with no porting....sorry, is not gonna happen.

4.33 diff, port/pinned block, 60-1 turbo, big f/m IC, 1600cc inj, Rotary Pro Pack or similar, 3'' exhaust, good EMS, good boost controller, Walbro + inline pump, 9lb flywheel should be enough to run low 12's on pump gas at about 15-18lbs of boost, daily driver too.

On my previous T II I had that combo but with a TO4E and 1200cc inj. + 1 850cc, my best was 12.68 at 18psi.

Interesting answer, but not accurate.. I went faster with less mods..
Old 07-17-05, 12:50 AM
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Originally Posted by J-Rat
Interesting answer, but not accurate.. I went faster with less mods..
Absolutely, it will go much faster, I think anything more than 16-18lbs of boost is too much stress for a daily driver. It comes a time when you get tired of breaking motors and start thinking about a 12 sec car that you can beat up and not explode within a year....

See my point?

Last edited by RX_AV8TR; 07-17-05 at 12:52 AM.
Old 07-17-05, 01:33 AM
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i ran a 10.3 @ 174mph with a stock TII turbo...... at 3bar!!!! i run a boost line to the wastegate... it's rediculous. i'll get a vid.
Old 07-17-05, 02:13 AM
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doh, i dunno where i got that it was an n/a thread, lol.
Old 07-17-05, 02:43 AM
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soooo what do you think it will take. a stock s4 tii fc. low 12s... make a mods list...
Old 07-17-05, 03:08 AM
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with all the weight reduction?
Old 07-17-05, 03:10 AM
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if you feel it takes weight reduction then add that to your "list".

i wanna know what people "think" it takes to run a low 12 with a s4tii.
Old 07-17-05, 04:22 AM
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Originally Posted by RX_AV8TR
Absolutely, it will go much faster, I think anything more than 16-18lbs of boost is too much stress for a daily driver. It comes a time when you get tired of breaking motors and start thinking about a 12 sec car that you can beat up and not explode within a year....

See my point?
Nope... My 12 sec has been on the road for a year... Funny thing is, it goes 17 pounds on 91 octane...
Old 07-17-05, 05:03 AM
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it took me a haltech and a manual boost controller.


but LOW 12's? atleast a t04b/manifold/wastegate, haltech, and some good tuning on 15-16psi. with a t04e it would be a little easier.

Last edited by jacobcartmill; 07-17-05 at 05:10 AM.
Old 07-17-05, 05:28 AM
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first off ASSUMING ur a good driver, (cuz that makes a BIG difference in 1/4)

strip the interior.... everything unnec. goes.. (even carpets and passenger seat)

lose the A/C and P/S window wipers/motors, u name it..

upgrade the Turbine..

open exhaust (just a nice 3.5" downpipe, no exhaust)

Haltech+fuel mods (lose the TID/MAF) (optionally remove the passenger headlight assembly leave and duct cold air from there..

super lightweight flywheel, heavy *** clutch, short shifter..


FMIC with short route smooth piping.. and freeze that **** with some No2 before lining up..


get 2 skinnies in the front... and some fat M/T's in the back


Turn the **** on the B/C...

rev the car till it bounces off the redline

let ur left foot off the clutch

keep ur right foot pinned to the floor board...and power shift like a madman



that should break u into the 12's...

(and hopefully not break ur car doin it)
Old 07-17-05, 05:33 AM
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Originally Posted by Ottoman
first off ASSUMING ur a good driver, (cuz that makes a BIG difference in 1/4)

strip the interior.... everything unnec. goes.. (even carpets and passenger seat)

lose the A/C and P/S window wipers/motors, u name it..

upgrade the Turbine..

open exhaust (just a nice 3.5" downpipe, no exhaust)

Haltech+fuel mods (lose the TID/MAF) (optionally remove the passenger headlight assembly leave and duct cold air from there..

super lightweight flywheel, heavy *** clutch, short shifter..


FMIC with short route smooth piping.. and freeze that **** with some No2 before lining up..


get 2 skinnies in the front... and some fat M/T's in the back


Turn the **** on the B/C...

rev the car till it bounces off the redline

let ur left foot off the clutch

keep ur right foot pinned to the floor board...and power shift like a madman



that should break u into the 12's...

(and hopefully not break ur car doin it)


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