MannyZ28

iTrader: (1)

The MR2 has following done:

1993 t-top
Engine:
Compression 8:1 able to run 32psi (currently on 10psi)
5sfe block bored 20 over
JDM 3sge top end
Crower rods
JE low compression pistons 88.5 bore
JE piston rings
OBX adjustable cam gears
Apexi 2.2mm thick metal head gasket
SFP turbo manifold (t3/t4 square flange)
Greddy internal waste gate
Turbonetics t3/t4 turbo 57intake 68exhaust
stock turbo intercooler
custom 3" down pipe
custom exhaust
Turbo XS dual stage boost controller
MSD boost timing management
custom intake
NGK Iridium spark plugs Holly fuel pressure regulator

Brains:
Greddy turbo timer
Greddy E-Manage Ultimate

Suspension:
91 Turbo Tranny
Spec stage 4 clutch
Fidanza 12lb flywheel
AGX adjustable shocks
Eibach Prokit springs
Suspension techniques poly urethane bushings
cross drilled and slotted Brembo rotters Rollers:
TSW Kayilamis
17x8 215/40 Front
18x8 245/40 Rear



My car just has a few simple mods:
1998 Z28 M6

Engine:
LS6 Intake
Ported and polished Throttle body
Throttle body bypass mod
TR224 224/224 .563/.563 112 LSA cam
Thunder Racing ported LS6 oil pump
ASP pulley
Comp918 springs
Thunder Racing hardened pushrods
Titanium retainers
Taylor 10.4mm wires
JWIS timing chain
NGK Iridium TR55IX plugs
Direct Flow Lid
Stainless Works Long Tube Headers with 2.5" Ypipe and Random Tech Cats
QTP Cutout
B&B Triflo Exhaust

Suspension:
Spohn body mounted adjustable torque arm at -2 degrees
SLP Subframe Connctors
BMR Poly lower control arms
UMI double adjustable rod ended panhard bar
stock springs

Wheels/Tires
17 x 9.5 and 17 x 11 AFS ZR1 wheels
BFG KD tires front and back

B&M Rippers Shifter.
4.10 GM gears in stock 10 bolt

I think that's most of it.

He's still working on getting 28psi of boost into his car, mine's pretty much done except the gears which will go in this week. My car put down 375 rwhp and 367 rwtq on a shitty tune on a hot day. The car will be retuned at RevXtreme after the gear install.

So gentlemen....who do you think will have the upper hand?

Manny

97blackz28

iTrader: (6)

will he be running 28psi or 10psi? I don't really know much about mr2's but that is a decent sized turbo for that car as i had a pretty similiar one on my old supra and it went pretty good. The general rule of thumb was 1psi of boost was about 12hp, so the difference b/t 10 and 28 is very significant. and i would assume the mr2 is pretty light. and the rear engine should help with weight transfer too if from a dig. only time will tell, but i would think it should be a good race, but what do i know.

MannyZ28

iTrader: (1)

It would be at 10 at first until he gets the 28 psi going.

97blackz28

iTrader: (6)

10 psi will barely spin that turbo, and i would guess you win fairly easy. but when he bumps it up to 28psi, look out.

uno

yeah 10psi is gonna make that turbo a pig. but on 28 i would say you'll be seein taillights

DAn95

iTrader: (2)

he sayin the boost builds to 28lbs, id say your gona loose goodluck

Sparetire

32PSI capable on "stock turbo intercooler".
Capable of 32PSI, but running 10. On a decent turbo that for some ungoldy stupid reason is running a "greddy internal wastegate" (Greddy actually makes an internal gate? How does that work? WTF would anyone want an aftermarket internal gate?)

So he has a built motor, custom turbo, and an internal gate running 10PSI? Ughh.

No offense, but is your freind retarded?

Not even goping to read the thread.


You will win. Boost speculation is the dumbest thing ever. Anyone claiming a certain amount of boost they are capable of based on some inaccurate HP rating for various engine parts and turbos knows nothing about tuning.


Happy hunting.

MannyZ28

iTrader: (1)

I don't know anything about turbo cars, but he had some major issues with the car, he just recently got it back. His PTV was non-existant due to the wrong size rods, and therefore he had to, and still is, running two head gaskets for clearance. I think his head gaskets leaked and he had some other issues as well. The reason why he is running only 10 PSI is because his fuel injectors aren't up to snuff and he's waiting on new ones. It's been pretty complicated to keep track of the whole story.

dailydriver

Just how much boost will he be able to run, even with the "right" injectors with TWO stacked head gaskets??!!? Import turbo mavens please reply?

MannyZ28

iTrader: (1)

Yeah the "Big Mac" head gasket configuration has always worried all of us.

Sparetire

He wont be going fast at all no matter what he does that way. Using the wrong size rods in a turbo app is about like using the wrong size rods in an LS1. Its fatal.

You're going to murder that thing if it lives to race you at all.

The "Big Mac" is a bad idea for two major reasons.

1)Any detonation at all (and every engine will get it here and there, especially FI ones) and its going to take damage and not seal. Any oil and coolant in the combustion chamber will cause more knock. You see how this ends. And since he wants to run about double the stock boost on the stock IC, it will get to the comclusion in a hurry with nasty knock he will get.

2)From the sound of it, he has pistons nearly moving through the HG(s) as if they were part of the block. If the ring gets over the deck height kiss that cylinder good bye as I highly doubt the gasket will keep the rings seated the way a iron cylinder wall does.

This is not high boost turbo knowledge. Its just basic engine building. And FWIW, going with an internal WG on a big turbo is plain stupid 90% of the time. Internal gates are flow restrictions. They dont controll boost well (one tends to get "creep"). And its usualy hard to find a truly large turbo with an internal anyway.
Secondarily, from the sound of what you wrote, he is using a "57 trim" on a .68 AR turbine housing. You will get opinions on this all over the map, but IMHO the 57 trim is kinda pointless on a 2L motor. Its got a bit more capability, but only at pressure ratios that are not so useful to a 2L that needs to run higher boost to make power. A 50 trim such as a FP Green in the DSM world is IMHO a much beter choice all around. Hello 400WHP

MannyZ28

iTrader: (1)

Well yes, from what I know, the piston top comes just barely over the deck...but yeah...the big boost is scary.

Riz88

Its a 2.2L. 3sgte is 2.0. This guy is running a 5sfe block. I also hope he's not trying to run all that on a stock intercooler. The stock ic is a weak point on the car.

Sparetire

^Im thinking he might be running a 3SGTE crank though, hence the confusion on what rod length to run. That would be more like 2L.

Who knows though. Probably just a stock 5SFE crank/block with the Crowers.

uno

sounds like the car is probably stock with a boost controller or something. Judging by all the inconsitancies like t3/t4 with internal gate@28psi crap. and then the double headgasket crap. maybe you will actually beat this guy, because it doesn't sound like whoever built his engine knew exactly what they were doing.

97blackz28

iTrader: (6)

yea i would have to agree an internal gate at that much boost is pretty dumb as you have very little control over the actual amount of boost you are producing, and a double headgasket lol i don't even know what to say about that. i do know that will not last long if at all running 28 psi. that's a whole lot of cylinder pressure and it going to want to get out if it can and will find that weakest point guranteed.

MannyZ28

iTrader: (1)

Hmm....so besides the dooms day prediction of the little MR. 2 blowing up with 28 psi, any more predictions?

lilbuddy1587

iTrader: (1)

Yea you're gonna pull train lengths while that **** poor setup blows sky ******* high. You F.T.W(goddamn ???)

MannyZ28

iTrader: (1)

MannyZ28

iTrader: (1)

He is running a 5sfe crank. I know a took a long time just to get that thing to idle, let alone run strong. But its doing pretty good now.

He is also running a 3sgte timing gear to get it to even run.

My other friend has a S2000 and he wants to run the same turbo but with a 46 mm external waste gate at 17 psi. Using 750cc injectors with a 255 Walbro pump, a 12:1 FMU and Greddy Emanagement Ultimate. He already installed a 2.3mm copper head gasket with stainless steel ringing.

Any thoughts on that setup?