Mobile Chassis Dyno

I have no idea what the limits are of this Engine stock. Before you go bashing me telling me this is a ticking time bomb you will not get an argument out of me. I simply did what the customer asked for and knows that **** happens when you push the envelope of horsepower. After running a number of 12.60's passes at 108 mph the customer wanted more. Car had been running the same 12 psi making 275 whp on pump gas. We were limited to around 13-14 degrees of timing for the car would not make any more power with more timing. It was then I suggested we switch to E85. We were then able to run as much as 22 degrees of timing without knock. Owner of the car is looking to switch to 80 lb injectors and up the boost to 16 psi and see if we can break the 400 whp mark.

I am not here to advertise the business. Just wanted to share the results with you and get some feedback from those who are familar with this engine. If I need to delete the dyno information in the graph I will so the thread does not get deleted and/or I get banned.

While this is not my cup of tea I can see why the 2.4 Ecotec motor is loved by the GM FWD community. This is one bad ass little engine. Here is a run down of the car.

Thanks!

100% Stock 2.4 Ecotec Engine
ZZP Turbo Kit - 2 1/2 exhaust with resonator and magnaflow muffler.
Fully Built Tranny - 3000 RPM stall converter
Air to Water Intercooler
255 lph Fuel Pump - Aeromotive Regulator - 60 lb injectors
Mix in some E85 and tuning and you get this....

14 PSI running out of injector Tires spinning on drums causing the dip in horsepower at the begining of the run.
12 PSI

Time for 80lb injectors and more boost. 400 whp out of a stock 2.4 here we come.

elecblue06

iTrader: (1)

is that a 5 spd or an auto? because 275 on 12 psi is rather low

however the 360 417 numbers.. DAYUM

and thanks for reminding me i'm gonna need new injectors when i put my new turbo on lol

Mobile Chassis Dyno

This was an auto with a 3000 rpm stall converter. TCC was left unlocked for I was afraid the lock up solenoid would not hold. All pulls were made in 3rd gear. I am sure the numbers would be much higher with a manual transmission car.

Like I said in the original post the car would not make any more power with more then 14 degrees of timing on pump gas. The knock sensors would start to tickle a degree at 15 degrees.

Mobile Chassis Dyno

If you look at the graph you can see the boost is just under 12 psi off the wastegate. Maybe 11.5?

As you can see a 1 psi gain gives it 20 whp on E85

elecblue06

iTrader: (1)

damn guys do work 275 stilll seams low for 12 psi.. someone did 275 whp on 10 psi a while ago

Mobile Chassis Dyno

What trans and what correction factor?

ebristol

iTrader: (4)

Don't nit pick his results. Those are great numbers for that stock engine. ZZP advertises 356whp with that same kit.

Have we had a stock LE5 pushed to failure with a good tune? Most of the failures I have seen have been with questionable tunes and questionable setups.

Brags

Good numbers!

Mobile Chassis Dyno

Thank you for the positive feedback. Maybe the pump gas tune had crappy gas which was why we could not run any more timing. I do not claim to be an expert on these engines so I do not know what kind of timing these motors like. The car ran all last summer with the pump gas tune and never had an issue. I must be doing something right. . At the same time I am going through the learning curve. Hopefully may 3800 and LSJ knowledge will come in handy with the 2.4 Ecotec.

Matt M

Nice job on the Saturn. We did 356 on 110 octane at 15-16psi, so these numbers are pretty good.

We don't advertise the kit to make anything close to that on 93 octane. It is good for 280-290 on stock valvesprings and 300-310 with upgraded valvesprings. We pushed it a lot harder on 110 octane.

This Saturn does have upgraded srpings.

Mobile Chassis Dyno

An even bigger thank you to Matt for the positive feed back. You guys built one hell of a turbo kit. What kind of boost is safe for this turbo? Do you think we will be ok with 16 pounds on the stock head gasket as long as we keep the tune safe?

Cherry GT

sub'd
for later viewing.

Mobile Chassis Dyno

I took another look at the graph before I left the dyno for a break. Decided to check the numbers using Standard, SAE, and Uncorrected.

360.6 WHP 417.2 WTQ - SAE
373.2 WHP 424.3 WTQ - STD
359.2 WHP 414.9 WTQ - Uncorrected

Regardless of the type of dyno used or the correction factor this car is making some power.

CordiaDOHC

iTrader: (2)

This makes me wish my car wasnt an 08

Good numbers!
Ive thought about going with a variation of the zzp stage 1 kit more than a few times. (air/air and meth instead of the liquid intercooler etc etc etc)

But being an 08 I might as well have a spare 2.4 on standby

Mobile Chassis Dyno

What is the downside to the 08 cars?

LS6Rally

iTrader: (14)

06-07 Had Forged Rods, 08 doesnt.

this makes me wanna build my 2.4. but with 132K miles, ill start another motor on the side for when this one goes. im sure one with a good bottom end from an 06-07 all refreshed will hold up fine!

Pedobear

iTrader: (37)

damn son did work

conerboner

iTrader: (4)

very nice! I'm on 17 psi with the stage 2 kit but I don't have any numbers yet.

elecblue06

iTrader: (1)

manual and idk.. it's cherry gt in this thread lol

still not knocking your guys work at all.. awesome work .. i need to redyno my car lol us 2.4s need some more 300 whp numbers

ctg5040

I plan to be over 300 here in the next few weeks.

CordiaDOHC

iTrader: (2)

If you dont mind how much did all of that run you?

every now and then the thought of building my cobalt comes back through my mind.
But I'd want rods piston cams valvesprings neutral balanceshafts and etc

ctg5040

^PM'd

Cherry GT

AUTO, and I was told it was sae corrected.

elecblue06

iTrader: (1)

oh **** lol

Mobile Chassis Dyno

Its good that he was able to make kind of power with less boost.

Once again elecblue06 we were limited to 14 degrees of timing. When trying to go to 15 degrees of timing we started to see knock. So we left the timing at 14 degrees and he was able to race his car with a number of passes without blowing up his car. Obviously the car like E85 for we were able to pick timing to 22 degrees and gain 50 whp with the same boost.

So to say "oh **** lol" I am not sure what you are getting at. For all we know we had shitty gas or maybe it was because we were making pull after pull with a warm engine and warm IAT's.

If Matt from ZZP comes in and pokes fun at the results on pump gas then I might want to be concerned and diag the problem. However Matt said the results were good for E85 and that was the purpose of the post. If it was your car that made the 275 whp on 10 psi I would say post up a graph. However it is not your car and you do not have a dyno sheet so that is not an option.

I will be posting more results once the customers switches to the bigger injectors and we add 2 more PSI of boost.