Supercharger Q&A, Moderated by Dyno Bob

BLOWER STAMP LOCATION

Dynobob — Mon, 06 Oct 2008 15:57:52 GMT

Every Stiegemeier ported blower is and was stamped with a series of numbers. They can be seen while on the vehicle.
After number 100 all have Stiegemeier stamped on them also.

Ask for these numbers when purchasing a used ported blower. Contact us and we can provide you with additional info such as services provided and the date in our shop.

http://www.stiegemeier.com/images/webpost/blower%20stamp%20005.jpg

Forum: STIEGEMEIER INFORMATION

INFORMATION ON OUR OCTOBER SAVINGS

Dynobob — Wed, 01 Oct 2008 15:13:49 GMT

We are offering a savings of over $100.00

When you order one of our Porting packages which include:
Blower ported, rotors stripped, Front drive rebuild.
Blower ported, tb and pl ported.
Blower, tb, pl ported, rotors stripped, front drive rebuild.

We will epoxy the silencer holes at no cost. (FREE)

If you send in a money order or cashier's check (payable to Stiegemeier) we will take an additional $25.00 off.
You MUST call or email us for total amount to make it out for.
Shipping varies from state to state.

Thanks!
dynobob@stiegemeier.com
636-949-2275

Forum: LIGHTNING OCTOBER SPECIAL

Foundation for Stage 5+

D3Racing — Tue, 23 Sep 2008 16:19:45 GMT

Bob,

Sure you get these type of questions all the time, I trying to get all the pieces together for a stage 5+ upgrade possibly over the winter. Here is what I have on hand now and what I think I need to make sure I have the foundation solid and also what would work for transferring over to a Whipple later on.

Now:

2.76" Upper
Stock Lower
JLT Fender Mount CAI
Billetflow 4 piece Idlers
Tensioner notch removed
MAC Powerchamber H-Pipe
MAC Cat-Back Exhaust
JLT Pre-filter
Steeda Oil Seperator
AFCO Double Pass Heat Exchanger
Canton Radiator Tank
LFP Intercooler Tank
FFPV Delete
Kenny Brown Super Subs (Subs, Matrix, Jacking Rails)
H&R Springs
Billetflow IRS Brace
Wideband O2
Clutch, transmission, and input shaft upgrades
Sutton Performance Tune

(car ran bests of 12.85 @111 with traction control and 12.95 at 117 without traction control this past Sunday @ 80 degrees in Milwaukee obviously 117 mph means it is making some power)

Have On Hand:
JLT underhood CAI
SCT 2400 MAF
2 lb lower ring (need kit to install)

Was looking to have purchased:
GT Supercar fuel pump and FPDM upgrade
60 lb injectors
Headers (k-member while at it)
TR6 plugs
FRPS Protector (killed my FRPS on third run, do you guys have sell the protector disc?)
Metco Lower pulley kit w/ 4lb lower (can then run 2lb or 4lb lower)

Am I missing anything? I would install the blower and then trailer it down for you guys to tune. This is not a daily driver but would like to stick to 93 octane maybe some booster on hot days, as it would be a weekend car. Let me know your opinions, thanks.

Forum: ASK BOB

DROP KICKS

perfectcobra — Sun, 21 Sep 2008 04:03:44 GMT

Hello there Bob,Robyn,Raylyn,Taylor,Whitney,Kurt and Jack.
Well guys all I can say is BLOODY AWESOME!!!!! You guys are just the best the car is brilliant and so are you guys it was a pleasure to meet you all and get some 1st class work done on my car it is running like a clock.
I had a great time with you guys and really enjoyed myself its great to be around nice people.Robyn spoken to any drop kicks lately ...lucky you.
You guys are always welcome to come stay with me in New Zealand you will be looked after for sure.Bob, thanks mate you are the best a really great guy and a clever bugger and Kurt your pride in your work is second to none,
Anyone who reads this and is thinking of getting your Eaton done...do it these guys are the best take it from me .
Cheers Bob and take it easy and dont forget to send me some photo's and data about your company..
Say hi to all your buddies for me.
Kelvin.............all the way from New Zealand :)

Forum: ASK BOB

what size belt

1fastsnake — Sat, 20 Sep 2008 14:59:19 GMT

Good afternoon Bob,
What size belt do i need to use with a stock lower pulley and a 2.76 upper pulley on a 2003 cobra with a stock Eaton.

Forum: ASK BOB

Porting help & pricing

1BADSNK — Wed, 17 Sep 2008 02:55:24 GMT

Hello Bob,
      I have a 2004 Cobra. I drive the car when I can on the weekends when I can & love taking it to shows. My goal with this car is the keep it looking as stock as possible for the shows but to get as much HP as possible for me. I've done A LOT of research & have decided that my best option is you. I have looked at the different stages on your web site. This car is my baby & I'm nervous to decide anything on my own when it comes to this. I want the max HP & TQ I can get without hurting how the car runs & looks. I've read about how the accufab TB's may stick. Not sure if that's the same for the dragon or not. I know I could go with the stock TB but again that's where the greed sets in cause I want the max power possible. I would love some help if you would be so kind.

Here is whats on the car now.....
2.76 upper pulley & Idler
4" LFP CAI (into fender well)
SLP cat back exhaust
LFP heat exchanger
SCT tuner(car programmed to 91 oct)

After I have everything done I will have the car re-tuned & set to 93 oct.

                                                     Thanks for any help on this!!!!
                                                     Matt

Forum: ASK BOB

THROTTLE BODY AND PLENUM REVIEWS FOR PORTED EATON'S

Dynobob — Fri, 12 Sep 2008 15:50:27 GMT

Throttle body and Plenum review for ported Eaton's.

Stock OEM Tb have great drive ability and manners, however in many cases is sized smaller than the optimum or you have modified your Cobra to the point where your Tb is the bottle neck that is holding your back.

When looking at your OEM Throttle body you probably have noticed the sprayed on sealer type material around the butterfly's, there are 2 reasons for this, one is to keep a build up of carbon from forming and secondly to seal the throttle blades and allow the IAC motor computer to control idle manners, idle down speed, and idle speed.

When opting for a large type Tb we are going to increase performance but usually sacrifice throttle manners. The reasons are many and vary from brand to brand. The most common complaints are idle speed, slow idle down, throttle sticking at off idle, weird air sounds detected at CAI, and cruise control problems. With advanced tuning techniques and mechanical tweaking, large Tb's can perform very nicely.

Stiegemeier porting modifies stock OEM Tb and Pl along with all large Tb types.

Air flow on a stock Cobra Tb and Pl is 878 CFM. Our latest large Tb an Pl we use flow at a rate of 1132 CFM by welding the Pl and enlarging the gasket area at the low pressure side of the ported Supercharger. We are now taking advantage of the large throttle blade and seeing a flow rate of 1283 CFM. These large flowing welded Tb and Pl are an option on Stiegemeier ported superchargers Stage 5+.

Forum: STAGE 4 OR 5 COBRA PORT

Header install, 2lb boost loss

97s351 — Wed, 10 Sep 2008 12:55:34 GMT

Bob:
I know 2lbs of boost is typically lost when installing full length headers. I am currently running your stage V ported Eaton with a 4lb. lower, giving me 10lbs. of boost with the headers. With a new tune could I safely run an 8lb. lower to restore approx 4 ilbs. of boost for a total of 14 to 15? Or would this max out the Eaton's effective operating range? I also have a 6lb. lower I could add. I do have a Mafia extender to go with any new tune.....Other mods include an Accufab TB, Trueflow intake tube, K&N CAI....

Forum: ASK BOB

INFORMATION TO READ

Dynobob — Tue, 09 Sep 2008 18:31:51 GMT

More is not always better especially with blower speed

Our Stage 4 is great- but the Stage 5 stands on it's own in a different way.
When modifying a Supercharger we are porting and polishing the unit for Max efficiency, at the same time keeping a balance between the low to high pressure sides.
Look at this procedure the same way you would a camshaft change. Larger Cams make more power because a duration (how long you hold the valve open) and lift (how high you lift the valve over stock) Center line overlap, the amount of degrees the intake valve is ahead of the exhaust and finally RPM speed how quick you open the valve. The larger the CAM profile the higher the working RPM range is.

Now let's go back to Supercharger porting, As the stages increased from 1-4 the unit got larger, sacrificing off throttle peak torque for unbelievable HP and TQ gains at higher RPM,s.
About 99% of all supercharged cars have modified their pulley's for more blower speed which in turn brings the improved power curve back down to an off throttle position.
The SVT Cobra with an upper pulley only can safely run a stock fuel system along with a stock MAF, if someone tells you differently you are being mis-informed.

It is fair to say that most of us want our cake and eat it too, Max HP and TQ gains with zero sacrifice's at a fair price. We have tested long and hard to build the most efficient Supercharger port. The result is Stage 5, a design which does not need to be over spun to make up for off throttle differences. A Stage 5 will make even HP and TQ with an upper pulley at 15.5 #s boost with a straight shot CAI 23 degree's timing.
500 RWHP 500 RWTQ

The throttle response is equal to a 2# lower on a Stage 5 port.
Now let's go back to what our fuel system can handle, we know an upper only pulley, say a 2.76 can run an OEM fuel system.
We now have the Stage 5 blower that has throttle response equal to running a 2# lower-but without the cost of not only a lower pulley but no expensive fuel system upgrades. We also retain all OEM drivability and idle manners. It is a win win situation on efficiency and cost, I am proud of this accomplishment.
For those of you who desire running more boost and high blower speeds, listen to what I say
2.76 upper a 2# lower with Stage 5 porting
2.76 upper a 3# lower with Stage 4 porting
These setups require fuel mods, MAF and clutch upgrades.

Higher blower speed than this can be ran, but engine mods, exhaust mods, fuel and tuning expertise is required.
Average Cost for RWHP on a SVT Cobra:

500/500 $1000.00-1500.00
525/525 $2500.00-3000.00
550/550 $3000.00-3500.00
600/600 $6000.00-7500.00- Must run at least 110 Octane at all times to avoid engine damage.
(these are just averages)

When you add a 4 to a 6# lower without correct engine and exhaust mods you will make more heat less power.
More is not always better especially with blower speed.
Is more timing better than the correct amount? NO
Is more fuel better than the correct amount? NO
Is more blower speed better than the correct amount? NO

I hope this helps those of you who might have been confused or had concerns.
We will talk about the TB and PL porting next.

Thank you
Sincerely
Bob Stiegemeier

___________________________

Forum: STAGE 4 OR 5 COBRA PORT

Dragon TB Question

Tractionless — Mon, 08 Sep 2008 16:59:06 GMT

Bob,

'04 Cobra w/Stieg. Stg. 4+ Eaton. I am DONE with the Accufab TB as it has been rebuilt once and still sticks after WOT and when the car sits for over 3 days upon start-up.

I am interested in the Dragon setup w/plenum. Should the plenum be port matched for the stg. 4+ inlet? Is the port match enough or should it be welded as well as ported?
Does the Dragon come with a IAC motor? I notice the Dragon relocates the IAC to below the TB but there doesn't appear to be any clearence for the stocker.

Thanks

Forum: ASK BOB

INFORMATION

Dynobob — Thur, 04 Sep 2008 17:02:30 GMT

Our Stage 4 is great- but the Stage 5 stands on it's own in a different way.

When modifying a Supercharger we are porting and polishing the unit for Max efficiency, at the same time keeping a balance between the low to high pressure sides.

Look at this procedure the same way you would a camshaft change. Larger Cams make more power because a duration (how long you hold the valve open) and lift (how high you lift the valve over stock) Center line overlap, the amount of degrees the intake valve is ahead of the exhaust and finally RPM speed how quick you open the valve. The larger the CAM profile the higher the working RPM range is.

Now let's go back to Supercharger porting, As the stages increased from 1-4 the unit got larger, sacrificing off throttle peak torque for unbelievable HP and TQ gains at higher RPM,s.

About 99% of all supercharged cars have modified their pulley's for more blower speed which in turn brings the improved power curve back down to an off throttle position.

The SVT Cobra with an upper pulley only can safely run a stock fuel system along with a stock MAF, if someone tells you differently you are being mis-informed.

It is fair to say that most of us want our cake and eat it too, Max HP and TQ gains with zero sacrifice's at a fair price. We have tested long and hard to build the most efficient Supercharger port. The result is Stage 5, a design which does not need to be over spun to make up for off throttle differences. A Stage 5 will make even HP and TQ with an upper pulley at 15.5 #s boost with a straight shot CAI 23 degree's timing.

500 rwhp 500 rwtq

The throttle response is equal to a 2# lower on a Stage 5 port.

Now let's go back to what our fuel system can handle, we know an upper only pulley, say a 2.76 can run an OEM fuel system.

We now have the Stage 5 blower that has throttle response equal to running a 2# lower-but without the cost of not only a lower pulley but no expensive fuel system upgrades. We also retain all OEM drivability and idle manners. It is a win win situation on efficiency and cost, I am proud of this accomplishment.

For those of you who desire running more boost and high blower speeds, listen to what I say

2.76 upper a 2# lower with Stage 5 porting

2.76 upper a 3# lower with Stage 4 porting

These setups require fuel mods, MAF and clutch upgrades.

Higher blower speed than this can be ran, but engine mods, exhaust mods, fuel and tuning expertise is required.

Average Cost for RWHP on a SVT Cobra:

500/500 $1000.00-1500.00

525/525 $2500.00-3000.00

550/550 $3000.00-3500.00

600/600 $6000.00-7500.00- Must run at least 110 Octane at all times to avoid engine damage.

(this are just averages)

When you add a 4 to a 6# lower without correct engine exhaust mods you will make more heat less power.

More is not always better especially with blower speed.

Is more timing better than the correct amount? NO

Is more fuel better than the correct amount? NO

Is more blower speed better than the correct amount? NO

I hope this helps those of you who might have been confused or had concerns.

We will talk about the TB and PL porting next.

Thank you

Sincerely

Bob Stiegemeier

Forum: 03/04 COBRA STAGE 4 VERSES STAGE 5

What stage and price please

perfectcobra — Tue, 02 Sep 2008 10:37:29 GMT

Hi Bob,I have an 03 Cobra with the following mods,mac cold air,2.8 pulley,100mm aux idler,accufab big oval throttle body,95mm MAF adaptor,bbk long tube ceramic headers,full cat back bassani cat back system,02 sensors,spec stage3 clutch and flywheel.
I would like to get my Eaton ported and externally polished but dont want to change the injectors or fuel system ,I will put a BAP on if required tho.
I was thinking maybe stage 4 or 5 as I already have the throttle body .I also have the diablo predator tunning unit.
Also can I call you to discuss a couple of other things as well.
Cheers mate,
KP

Forum: ASK BOB

Installing an '08 Shelby GT 500 engine in my '03 Lightning

Calabria — Sun, 31 Aug 2008 22:24:34 GMT

Good afternoon, Bob
Have been looking at your web a couple years now....1st - time 'talker'! At 1st blush, it doesn't look like a major project...even if I decide to convert to 6-speed manual...most of the issues are converting to 'drive-by-wire' throttle, OR, going with a conventional Lightning throttle. I've begun port-matching the intake-side of the heads and, thought while the top-end is apart, it might be a pro-active thought to have you go through the blower with a Stage-V tune and 2.2" pulley.
   Another thought occurs; Reichard Racing makes a 1" billet spacer for the Eatons on the 5.4L 2-valve motor and has proven great success in "straightening - out" the airflow into the after-cooler. They proved their $300 piece good for 30+ RWHP. I'd be interested in your thoughts concerning having one mfg'd for the 5.4L 4-valve motor, which has even greater shrouding of the after-cooler...
   Lastly, why do you NOT recommend phenolic throttle and plenum spacers??? Seems to me, keeping the in-coming air as cold as possible will also aid in keeping charge-air temps down....OR, are these things promoting heat-saturation of the supercharger???? If THIS is the case, how about having the inside of the plenum, throttle housing and MAF housing JET-HOT coated as this, although FAR MORE expensive than JDM's plastic pieces, will have a better result, do to the superior thermal barrier???
   Hope you and the family had a safe and relaxing holiday weekend

Reggio Calabria........"buena fortuna famiglia d'Steigemeier "

Forum: ASK BOB

best lower for a 2.80 Stage IV

EvilBender — Thur, 28 Aug 2008 19:07:36 GMT

Bob ,I am getting all the parts together to put a lower pully on my 03 cobra.
Currently I have a 2.80 steel upper and a stage IV port(Thank You VERY MUCH) What is the best lower to get all I can out of my port?

Thanks Steve R.

Forum: ASK BOB

Labor for GT500 Stage 3

overtime — Wed, 27 Aug 2008 20:25:30 GMT

Bob,
I live near your shop in St Charles. Can your shop perform the GT500 Stage 4 install (labor). Also, are Steeda parts (CAI, pulley & tensioner) and option for this install.

If so, what would the approx. labor charge be for this type of install.

Thanks,
Steve

Forum: ASK BOB