mr2 vs celica gt4

[91dx]

Ok.. My buddy has a celica gt4 all-trac 200hp turbocharged car and he hasn't said anything about racing but the other guys around town are kinda hinting to me that he's talking shit about my car and he can beat it. SO... I wanna know what you guys think?

His mods :
boost controller (set to 14psi)
thick head gasket
turbo timer
fan on top of his intercooler
exhaust tip

My car :
95 mr2 with JDM 3sgter (gen 2) motor swap
stock everything except the motor obviously


He claims 300hp. I don't think so but it's cool.. What do you guys think roughly? I know it has a lot to do with driver but CAR for CAR which is faster? Thanks

[ghetto7o2azn]

i would say that the alltrac would win car to car... if he really had a boost controller and all that... its faster off the line with the awd... also the the 2nd gen 3sgte engine wont give you taht much power... a big part of the power increase is the ecu... even though the celica is heavier i would have to say that it would win..

[scarecrowX]

Originally Posted by 91dx

His mods :
boost controller (set to 14psi)
thick head gasket
turbo timer
fan on top of his intercooler
exhaust tip

He claims 300hp. I don't think so but it's cool.. What do you guys think roughly? I know it has a lot to do with driver but CAR for CAR which is faster? Thanks

300HP? no way in hell.
the ONLY mod on that list that i can see that will help him make more power is the boost controller. in fact, the thick head gasket would lose him a slight amount of power because it would lower the CR slightly. that will help him be able to run more boost before detonation, but you said he's only at 14psi. not a chance in HELL is a CT26 making 300HP at 14psi. tell him his butt dyno needs to be recalibrated

incidentally, your engine should be able to handle 14psi as well assuming your fuel/ignition systems are in good working order. what boost are you running right now? you DO have a boost gauge, right? if not, get one.

AWD won't help him that much against a mid engined RWD car. i've seen MR's pull better 60' times than AWD cars. reason is, once you launch at a certain level, the front wheels are barely on the ground anyway, so driving them isn't helping you any. he'll also be losing 2-5% more power through his drivetrain, being AWD. aren't the all trac's heavier too?

i think you could smoke him if you're a decent driver. just use your brain and don't do it on the street.

[91dx]

Originally Posted by scarecrowX

300HP? no way in hell.
the ONLY mod on that list that i can see that will help him make more power is the boost controller. in fact, the thick head gasket would lose him a slight amount of power because it would lower the CR slightly. that will help him be able to run more boost before detonation, but you said he's only at 14psi. not a chance in HELL is a CT26 making 300HP at 14psi. tell him his butt dyno needs to be recalibrated

incidentally, your engine should be able to handle 14psi as well assuming your fuel/ignition systems are in good working order. what boost are you running right now? you DO have a boost gauge, right? if not, get one.

AWD won't help him that much against a mid engined RWD car. i've seen MR's pull better 60' times than AWD cars. reason is, once you launch at a certain level, the front wheels are barely on the ground anyway, so driving them isn't helping you any. he'll also be losing 2-5% more power through his drivetrain, being AWD. aren't the all trac's heavier too?

i think you could smoke him if you're a decent driver. just use your brain and don't do it on the street.

He claims 300hp. He's never been on a dyno. His car weighs 3227 but he has a decent size stereo and a monitor etc. I weighed my car on a pit scale and it weighs exactly 2800lbs. So I do have a slight weight advantage. I don't have a boost gauge like I said the car is stock with nothing but a jdm 3sgte motor swap, but that is one of my first mods I will be getting obviously.

[91dx]

My first set of mods will include:

BLITZ NUR SPEC EXHAUST
Blitz down pipe
Head ported/polished, decked, magnaflexed and checked for cracks
Valve job, ported intake manifold
Top end gasket set
HKS head gasket 1.6mm stopper
arp head studs
Autometer ultra-lite gauges (afm, water temp, oil pressure, and boost)
two 7.5in spal push fan (trunk lid)
7.5in spal pull fan (intercooler)
Apex power intake
B&M shift kit
NGK BKR7E plugs
Greddy profec b spec 2 boost controller
greddy turbo timer
Apexi Super VAFC II

[scarecrowX]

Originally Posted by 91dx

He claims 300hp. He's never been on a dyno. His car weighs 3227 but he has a decent size stereo and a monitor etc. I weighed my car on a pit scale and it weighs exactly 2800lbs. So I do have a slight weight advantage. I don't have a boost gauge like I said the car is stock with nothing but a jdm 3sgte motor swap, but that is one of my first mods I will be getting obviously.

yeah, like i said, no way in hell he has 300HP. the stock CT26 isn't even capable of 300HP. mid to high 200's is where it chokes off. even the CT20B's need a LOT of massaging to get to 300HP.

chances are, your car makes the same power as his, as the J-spec engines i believe ran a little more boost and more aggressive timing. they're rated about 20HP higher than the US versions.

if yuo want a cheap and easy (and TEMPORARY) boost controller (after you get your boost gauge of course), get a plastic tee and cut off the center leg, leaving about 1/2" of the plastic on that leg. use a dremel to cut a slot in that leg, then screw a set screw into the hole down to where it closes off the slot.

it'll look like this:


intstall it on the small vacuum line between the compressor outlet and the wastegate. watch your boost gauge. unscrew it (opening the slot) a little at a time. this will bleed off some pressure to the wastegate and raise your boost. start at stock, WATCH THE BOOST GAUGE, and work slowly. turn it up 3-4 psi and he wont' stand a chance. it'll cost you $1.50 in parts from your local hardware store.

you'll have to deal with your fuel cut as well. install a potentiometer on the blue wire on the turbo pressure (MAP) sensor and use it to raise your fuel cut. there's a ton of info on this mod, just search google and you'll find it..

[91dx]

i just ordered :
Autometer ultra-lite gauges (afm, water temp, oil pressure, and boost)
two 7.5in spal push fan (trunk lid)
7.5in spal pull fan (intercooler)
Apex power intake
B&M shift kit
NGK BKR7E plugs
Greddy profec b spec 2 boost controller
greddy turbo timer


when it's all installed we'll race hehehe

[scarecrowX]

so jealous.
i wish i could bring myself to fork over money for my car. unfortunately, i'm cheap, and thus i'm doomed to doing more work to go fast.
i cringe to think of the cold day in february when i'll hand over the cash for a standalone EMS so i can use my super 16g to its full potential.

remember to raise the fuel cut too, or your EFI will shut off right before you hand him his ass

[91dx]

so what do I need the HKS fuel cut defencer?

[scarecrowX]

nah, build your own. it'll cost you $3 in parts and it's the exact same thing as the HKS.

get a potentiometer from radioshack. 1K ohm will do.
connect one fo the outside pins to ground. cut the blue wire on the turbo pressure sensor and connect the wire on the sensor side to the other outside pin. the middle pin on the pot goes to the wire that goes back to the ECU.

turn the pot all the way towards the blue wire on the outside and you're at stock fuel cut. the more you turn the pot towards ground, the higher you raise your fuel cut. if you have a voltmeter, measure between the center pin and ground. when it hits 4.4v, you have fuel cut. the potentiometer allows you to adjust the pressure at which you hit 4.4v. i think i have the exact ohm values somewhere for specific boost pressures...

[91dx]

haha mr magiver mr2

[91dx]

ok so after these mods will I have any problems beating that car?

[91dx]

I bought the HKS fuel cut defencer as well..

[ghetto7o2azn]

i think it shouldnt be that hard after you instal the stuff depending on how high you run your boost... do you plan on gettin a new turbo as well?

[ghetto7o2azn]

oh yeah just wanted to clear up that there is no such thing as the ct20b turbo... there is only a later generation ct26 turbo which people started calling the ct20b turbo to tell the difference between the two... and the most you can get out of it is 350hp of course that is gettin all the power that you can out of the engine w/ that turbo