Stiegemeier Porting Stage 5 And 5+ Graphs And Info

This graph shows our latest design for the M112 Cobra Eaton Supercharger the 03 and 04 Cobra mods are: Stiegemeier Stage 5 Combo , Under hood CAI (un-shrouded), 2.76 upper pulley, .100 Idler, Gates Belt K080740, notched tensioner, NGK TR6 plugs gapped @ .038, Cat delete, Jim Stiegemeier SCT 93 Octane Tune., boost was 14#s.

The Horsepower numbers are great, but the Torque numbers speak for there selfĺs. 503 at 3550 RPMĺs , Not much off from a 2# Lower reading. The throttle response noticeably IMPROVED in and out of gear.

Jim Stated it was the strongest upper pulley only Eaton he has ever drove on the Dyno Jet (Jim does the tuning and also drives.)

Stage 5 orders will require a 1 day added turnaround time. Everything going out as of mid summer has been a Stage 4+. The Stage 4+ is a great mod at a very moderate price, HP per dollar. The Stiegemeier Stage 5 and 5+ are for those who desire the ULTIMATE Eaton upgrade on Planet Earth!




16#s Boost Stage 5 original Ported Combo:


Stiegemeier Stage 5+ 16#s boost Non Welded Accufab:


Stiegemeier Stage 5 non welded Dragon:



Stiegemeier Stage 5+ Welded Accufab:


Stiegemeier Stage 5+ Welded Dragon:


23 Degree's of Timing
Pump Gas 93 Octane

CLUTCH IS SKIPPING ON THE ROAD WE ARE NOT SEEING IT ON THE DYNO HOWEVER WILL BE INSTALLING NEW UPGRADED CLUTCH RESULTS OF THAT SHORTLY.

Cold weather results same Cobra same mods no tricks just difference in temperature.

Holy shit! This is with no lower pulley correct? What are the SAE numbers by chance?

Without revealing your secrets, can you elaborate on what has been done on the stage V to assist with the torque increase?

As always, Stiegemeier delivers!

How much for the stage 5+ port?

yea how much for the stage 5??

wow...kenne bell and whipple are going to hate you guys....

LS1Killer said:

wow...kenne bell and whipple are going to hate you guys....

Click to expand...

good, i hope they lower their damn overpriced asses :beer:

That AFR would scare me to death! 13.0 @6000:shrug: If i was running race gas it wouldn't both me as much but on 93..... Very nice numbers though! Lean is mean.:lol:

how much for a stage 5 + ,

Here is more info that has been posted in other threads.


Stiegemeier Stage 5 and 5+ Eaton Supercharger Mod

Stage 5 Explained:

Rotor timing -2 degree’s

Raised roof

Torque Plate welded in for Torque control

Stage 5+ Explained:

All of Stage 5 plus a single blade Throttle Body with a Plenum mod (welded or non-welded) to increase square in area of entrance.

Stage 5 Results:

Throttle response

515+ RWHP, 503 RWTQ at 14#s boost, upper pulley only (a first)

Stage 5 Combo 16#s boost 525 RWHP and 525 RWTQ STD TB and Pl.

Stage 5 Accufab 16#s boost 530 RWHP and 530 RWTQ

*Mods needed for Stage 5- Under the hood CAI only, not shrouded, Idler pulley + 2.76 = 14.5 #s boost, 2.80 = 14 #s boost, 2.93 = 13.5 #s boost.

NGK TR6 spark plugs .038 -. 040 gap

Gates belt

Tuning device.





Stage 5+ Results:

2.8 upper 2 # lower 16#s boost, Accufab (non welded Plenum) 530 RWHP and 530 RWTQ

Oval blade non welded Plenum 535 RWHP and 535 RWTQ

Accufab welded 540 RWHP 540 RWTQ

Oval blade welded 550 RWHP 550 RWTQ

Enough TQ to pull your 355 Gear.

Mods need ed for Stage 5+

2600 SCT MAF or equivalent

Under hood CAI Only – No shroud

2 ½ Catback at back exhaust, High Flow Cat or Delete

NGK TR6 Plug gap .036-.038

Extra Idler

2# Lower pulley, 2.76 or 2.8 upper pulley

4# Lower pulley, 2.93 or 3.1 upper pulley

Gates belt

BAP or 50 # Injectors

Fuel Pressure Sensor Protector

Improved Intercooler is a good idea, however not required.

Tuner

Upgraded Clutch is a Must also retain the Aluminum Flywheel, Steel loses 15 HP and TQ (Minimum.)

Stage 5+ 17.5 –20 #s boost, Double row Aftercooler, 55-60 lb. Injectors, GT Pumps, 2800 MAF, Mid to long Tube Headers and improved Octane.

* Note* Any Lower pulley larger than 2# requires a larger alternator pulley.









Minimum Octane requirement up to 60 degree air temperature.

500----91

525----91-93

550----93-95

575----95-97

600----97-99

Summer Heat – Decrease timing 3 degree’s or add Octane.

If your goal is 500 to 550 RWHP and RWTQ.

Keep your EATON and Call STIEGEMEIER PORTING AT 636-949-2275.

If your goal is 600+ RWHP and RWTQ call Whipple.





AVERAGE COST OF STIEGEMEIER PORTED MODS $695.00 TO $895.00 UP TO 550 RWHP.

TWIN SCREW $3500.00 TO $3800.00. UP TO 600 RWHP



PRICING:

Stage 5 $695

Stage 5 update $395

Stage 5 +plenum upgrade add .500 squared area $100

Stage 5 +welded plenum upgrade add 1.00 squared area $200

New oval blade TB & plenum $495

Stage 5+ combo Package $1295

~ Eaton blower mods

~ Welded case & plenum

~ New dual TB &PL

Front drive rebuilds $125.00 (with porting)

Pulley + install $150.00

Injector service $95.00

Stiegemeier Porting Service delivers more HP per dollar Guaranteed.

Average turn around time

1-3-days in shop

Same day rush fee $75.00

Average shipping cost $55.00 may vary

*We will see low 11 second Cobra’s running high 10’s at 130-135 mph.*

omg..... these are close to 16psi KB or Whipple numbers.... and with a 125 shot??? =) even more power...

We have made several changes and included a tq plate,
We do not change the tune once we start testing.
Our Cobra test Car has a stock fuel system except the MAF

The Stage 5 and 5+ at 16#s of boost maxed out on fuel at the top end.
I am in the process of re-working Stock Injectors for a low cost alternative(more on this later). This is why we are still working with a MAF only.

Thanks

I'm looking to go with a ported eaton and I currently have a Accufab single blade and their plenum on the stock eaton. Would I need to send you the Accufab TB and Plenum for the stage 5+. And I'm not understanding the "Welding" part of this. Could you or anyone explain it a little better.

bump +1

I was also wondering what the IAT 2 temps are on this stage 5+. Did you guys run with datalogging the IAT temps yet? It would be interesting to see what they are with a stock heat exchanger.

Can't wait til I get my Eaton setup, definitely be dropping it off for a Stage 3 or 4 port. Another good thing is the fact that you are only like 20 mins from me. :banana:

What is going on at 4k RPM? where there is a slight power loss there? Also AFR is way too lean IMO. why is that?

nice numners from stock eaton though!

man I can't wait to get mine done.