kyle1853

what spark plug gap for a 2.9" pulley i got the ngk copper 1 step colder (4644)? i have the gm stage 2 kit just incase you were wondering

ShortStack

.035-.038

Staged07SS

iTrader: (25)

0.035 has always worked best on my car

Zach06CobaltSC

+1 for .035 that's what I run.

Short get on aim, brawr.

kyle1853

sweet thanks guys.. and what size is a 76 mm

Staged07SS

iTrader: (25)

2.99" its GM's Stage 3 Pulley

kyle1853

isnt the stage 2 a 3.0" tho

ShortStack

Stage 2 is 77.9mm.

Stage 3 pulley is 76

Staged07SS

iTrader: (25)

If you want to be exact Stage 2 = 3.06"
Stage 3 = 2.99"

or what shortstack said: Stage 2 = 77.9mm, Stage 3 = 76mm

kyle1853

whats that like a 1 psi difference maybe

Staged07SS

iTrader: (25)

i saw about 0.5psi increase from the stage 3 pulley. it brings out the torque a tad sooner and it boosts faster. not a huge increase, but it deff. pulls harder than it did when i had the stage 2 pulley on.

kyle1853

did you ever run yours at the track?

Staged07SS

iTrader: (25)

no i have not ....

rukkee

iTrader: (3)

I used to see at least 1psi with my stage 3 pulley , when it was cold 1.5 . It definitely helps in the lower rpm ranges thou . My car liked .033 -.035 . The nice thing about the 76mm is it doesn't produce the heat a true 2.9 does , and even GM said it was safe for the stage 2 tune (stage 3 FAQ)

Staged07SS

iTrader: (25)

i deff. agree about the cold weather. i would see as much as 16.5psi on a cool night, but my avg. psi with the Stage 3 pulley has been 16psi and it used to be about 15.5psi with the Stage 2 pulley. Still its a great upgrade and like you said it doesnt create the same amount of heat as the 2.9 nor does it strain the 42lb/hr injectors as bad. after all the gm stage 3 kit is designed for the 42lbers.

kyle1853

where can you get the stage 3 and how much ... i bought the 2.9 for 35 yesterday...but is the 2.9 alright to run?

Staged07SS

iTrader: (25)

Some say its ok to run the 2.9 on the GM Stage Tune & Injectors, but I wanted to be extra safe. As long as you dont beat on your car all the time, you should be fine with the 2.9. To get the most out of the 2.9, its best to get a custom tune and larger injectors (ie. 60 lb/hr).

As for the GM Stage 3 pulley .... you can buy a genuine one brand new on Crate Engine Depot's website for about $120. Or you can have another company make you one that looks just like the GM Stage 3 pulley for $50 or so. I'm still under warrenty and the GM Stage 3 pulley looks identical to the GM Stage 2 pulley, so i shouldnt have any problems with the dealership if i ever need warrenty work.

hawlyns711

iTrader: (2)

just some extra reference info....


Stock Gap is 0.45"
PSi-Fi Pulley Kit Recommendation gap is 0.28"
Intense-Racing GM-MAF-T/42.5lbs Injectors/2.8" Pulley Gap recommendations is 0.45"
South Florida Pulley Headquarters suggested NGK BK7RE gap is 0.35"

Staged07SS

iTrader: (25)

stock gap is 0.039"

0.035" is a good place to start when you pulley down. 0.045" is much to large of a gap for a F.I. car.

For reference spark plug gaps are measured in thousandths of an inch not hundredths of an inch.

hawlyns711

iTrader: (2)

I should have realized that mistake, but it was quoted from RLF...fail

and stock my Ion LSJ manual shows .045"............................................. ........you must have made that .039 up

Staged07SS

iTrader: (25)

i made nothing up .... my 2007 Cobalt ss/sc manual says 0.039".

my plugs were gapped at 0.035" from the factory though, so who really knows the proper stock plug gap.

hawlyns711

iTrader: (2)

yea to tell you the truth my gap was .042" when I got the car... weirdly enough. must be whatever feels the best

rukkee

iTrader: (3)

Yep , here is the Service capacity's and spec's i pulled from GM Dealerworld Service Information. Look towards the bottom


Capacities and Specifications
Table 1: Engine Specifications

The following approximate capacities are given in English and metric conversions. Please refer to Recommended Fluids and Lubricants for more information.

Application
Capacities

English
Metric

Air Conditioning Refrigerant R134a
For the air conditioning system refrigerant charge amount, see the refrigerant caution label located under the hood. See your dealer for more information.

Cooling System

•2.0L L4 Engine Supercharged
9.2 qt
8.7 L

•2.2L L4 Engine
7.4 qt
7.0 L

•2.4L L4 Engine
7.4 qt
7.0L

Intercooler System 2.0L Engine
2.1 qt
1.95 L

Engine Oil with Filter

•2.2L L4 and 2.4L L4 Engines
5.0 qt
4.7 L

•2.0L L4 Engine Supercharged
6.0 qt
5.7 L

Fuel Tank

2.2L L4 Engine (with NU6 emissions) sold new in CA, ME, VT, NY, NH, MA (see your dealer for bordering states)
13.5 gal
51.1 L

2.2L L4 Engine (without NU6 emissions) sold new in all other states (see your dealer for more information)
13.0 gal
49.2 L

2.4L and 2.0L Supercharged L4 Engine sold new in all states.
13.0 gal
49.2 L

Transaxle, Automatic (Complete Drain and Refill)
7.0 qt
6.6 L

Transaxle, Manual (Complete Drain and Refill)

•2.2L L4 and 2.4L L4 Engines
1.7 qt
1.6 L

•2.0L L4 Engine Supercharged
1.7 qt
1.6 L

Wheel Nut Torque
100 lb ft
140 N·m

All capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual.

Engine Specifications Engine
VIN Code
Transaxle
Spark Plug Gap

2.2L L4
F
Automatic

Manual
0.040 inches (1.01 mm)

2.0L L4 (Supercharged)
P
Manual
0.039 inches (1.00 mm)

2.4L L4
B
Manual

Automatic
0.040 inches (1.01 mm)

kyle1853

wow where did you find this ...and in other words .035"

Staged07SS

iTrader: (25)

i would go with 0.035" to start .... it has worked great on my car along with others