what would happen if all i did was run nothing but 112 leaded. what would that mess up beside the o2

MidKnight...can you see me now?

heavy deposits on the valve seats, valves, clogged injectors. replacign the o2 every 4 months..ect ect.

how long would it take for all that to happen say a tank ever 2 weeks. lookin to run 12psi

MidKnight...can you see me now?

-MIKE-

Stroked 2.2L

What's your setup like? Most people run 12 psi on pump gas, let alone 112 leaded.

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

Im guessing he wants to try this on a stock bottom end.

2002 WRX
Eclipse RS-T..sold

thats wat i was thinkin

I dont really want to thread jack but I dont want to start a new thread. I was wondering if I can run 10-12 psi with a decent margin of safety with stock bottom end, 12:1 fmu, upgraded fuel pump and larger injectors with around ~98 octane (toluene/xylene+mmo+93 octane mixture)?

Brian

no

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
http://imageshack.us>


http://www.2gnt.com/index.php?d=boosted60trimrst
My contribution to the wiki
http://www.2gnt.com/index.php?d=crank%20arm%20spindle%20mod%20to%20fit%20power%20panels

Brian

_________________________
99' Eclipse GS+T

That is why I asked about using 98 octane. My super rough estimate is that at 12 psi, I should be making ~250 crank hp. According to hahn our engines can handle that much pressure its just that any significant detonation and our piston rings will take a sh!t.

Anyone else have any non general answers?

Brian

13psi the rods start bending.
one incident of detonation and rebuild time.

your call.

Member # 751


FOUNDER of the Central Cali chapter of 2GNT!
(I got kicked out after I refused to go Cow tiping) - Hehehe you know who this is for

12psi does not equal 250hp. you need to factor in CFM of a turbo and the turbo's efficiency. to do this would require the turbo flow map. your calculations ar enothing more that an inaccurate guess. My 12psi on a 50trim Garrett is not the same as 12psi on a 16g or even a 20g.

Terry

youll coat the catalyst and kill your catalytic converter, not cheap if youre dodging emmission shit

remember octane has nothing to do with power if you dont do anything with it. unless you have have a higher compression or advance the timing you wont make any more power in and of itself. dont confuse its amount of energy and its octane. what do you tune with?

if you're looking for a practical way of say, run a lot of boost...look into methanol or water/alcohol injection and pump gas, spend your energy there. run sick power on pump gas.

_ _ _ _ _ _ _ _ _

96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com

Brian

Brian

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

Originally posted by Blizare

Originally posted by RoughRider01 fuel doesnt detonate due to the higher pressure before the piston reaches tdc (well just before).

Also because of HEAT. Hot spots on a piston can cause pre-ignition. Like turby said, anything you can do to cool the intake charge yields power ie:methenol/more efficent IC. Put it this way, videotape it and post the vid when you blow up your stock internal motor.

Brian

If your running the star turbo then dont go 12psi on stock bottom. I cant give you a def HP number but it has been proven time and time again that 10psi starts to snap ringlands with that turbo. 12psi you are really asking for a headache. According to DRAG who made the star kits, 10psi was 275 crank HP, no I cant say i have seen it proven so take it with a grain of salt. the 50trim t3/t4 is slightly smaller than than the 20g hahn sells in terms of CFM air flow.

Terry

275 crank hp at 10 psi... I raise the bs flag full mast. Maybe with tuning but not with just the fmu. But thanks for the info. I guess my cheap ass will just have to save up for a rebuild before I raise the boost past 7-8 psi. I have also wondered which turbo flowed. So now I know.

Brian

1995 Eagle Talon ESi

_ _ _ _ _ _ _ _ _

96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com

ya but not at 12 psi on stock internals

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

I dont see where i posted 10psi with an FMU. IF anyone of you can tell me where i did i would like to see it. Quit halfassing this and rebuild the engine. otherwise dont whine when it you are replacing long before you planned.

My bad. When you said drag claimed 275hp at 10psi I assumed it was still with the fmu.

Brian