FACTORY AIR BOX PROBLEM SOLVED! Whipp 4.0 900 RWHP!

[Rockstar]

After months of testing the Spectacular Whipple 4 Litre soopercharger:thumbsup, we have learned quite a few things. I know some of the other guy's are wanting to improve the air box problem but they said that it would be at least a year out. I took it upon myself to modify the stock air box, it dose not look the prettiest but it is fully functional. The first problem with the box is the out going plenum on top. It's not large enough to feed the throtal body and blower. I carefully cut out the existing plenum and replaced it with a larger diameter oval tube. I also cut back the rubber bellows and the Accufab incert. This now allows proper flow with no funnel efect.
After increasing the plenum sise It was obious that now it needed more clean air. As you can see from the pictures I have stratigicly placed 4 snorkle tubes. Two that feed from the vents in the clam shell and two that feed from tubing from the side scoupes. This has doubbled the clean air to the box. "If you are not good with precise fabrication do not try this yourself"
Some guy's said " just put a big K&N cone on the back of the bellows". This won't work because you would be then pulling in dirty hot air off of the engine, since there is not much circulation when the clam shell is closed. You would end up with hotter down stream air and over heat sooner.
I did these mods out of desperation, I did not want to wate till someone re built the air box. Along with the box mods we have come up with 15 other modifications, some more significant than others. What we did achieve is 890 Rear Wheel Horse Power and 846 LBS or torque on 105 race fuel:cheers. We truly believe with some more development 1000 RWHP is not out of the question for the 4.0 Litre Whipple. "Rockstar" Rich Barnes at The Mustang Ranch in Golden, Colorado 303-931-5412 P.S. The tires spin in first, second and part or third geer!:willy

 

[RALPHIE]

...What we did achieve is 890 Rear Wheel Horse Power and 846 LBS or torque on 105 race fuel:cheers.

What was the gain? Did you dyno the car before the mods? By the way, nice mods.

 

[Mullet]

890 is a strong number.

 

[Rockstar]

The big jump was of corse the 4.0. and we started on pump gas, 17 lbs of boost and made 725 RWHP. After that it was one thing after the other to make more power.

 

[soroush]

you should bring her to the texas mile in march!

 

[dealmaker]

great work Rockstar!

How much power does everyone think would be possible with the 4.0 if someone developed a "built from scratch - designed for the purpose" air -box to cope with the extra demands of the 4.0L Whipple??

 

[BlackICE]

What size/boost pulley are you running now?

Did you see the boost increase after the airbox mods?

Did you need to run the Boost a Pumps?

BTW, GREAT numbers! :thumbsup

 

[Whipple Charged]

Great work! Thats great information.

 

[fjpikul]

OK, it looks to me like you removed/cut away the bottom of the clamshell vents. There is now no protection from the elements. No big deal if you just drive in nice weather, but what keeps debris out? Both the front and rear tubing assemblies appear to enter below the air filters, so what's keeping the air clean? Inquiring minds want to know.

 

[Shadowman]

Great job Rich

It appears to me that the flow through tube for the MAF is a "large" part of the results

Takes care

Shadowman

 

[RALPHIE]

OK, it looks to me like you removed/cut away the bottom of the clamshell vents. There is now no protection from the elements. No big deal if you just drive in nice weather, but what keeps debris out? Both the front and rear tubing assemblies appear to enter below the air filters, so what's keeping the air clean? Inquiring minds want to know.

Frank -

All the air boxes have the air enter the bottom of the boxes, go through the filters and exit out of the top and into the throttle body.

 

[Luke Warmwater]

Schedule 80?

 

[fjpikul]

Ralphie, I thought about that after I posted, but work got in the way. You remember that don't you? The bottoms of the vents are gone though.

 

[PL510*Jeff]

Schedule 80?

Looks like std weight ABS fittings.

 

[Black GT]

Awesome! What do you get on pump?

 

[Shadowman]

Awesome! What do you get on pump?

I am certain that at some point Rich will share more about this many month project however let it be known at this time that Gen III Whipple and the shared air box tweaks alone did not come close to creating these numbers.

The fuel system was massaged, the MAF was massaged, the air box was massaged and testing presented on barrel rather than pump gas.

The real question is;

With a Gen III Whipple a massaged air box, on 91 octane pump gas what does she present; my gut tells me a number greater than the Gen II however not scope and magnitude.

This project that Rich is tackling is not IMO that which most would want to tackle themselves and is a far cry from the moderate process of installing a Whipple supercharger.

Now having said this; to a person I have shared that on paper the Gen III has the potential for creating a more potent power plant however not in concert with the OEM fuel system and not on 91 octane pump gas.

Let this be as it is; a wonderful shared experience by Rich however do not blindly get drawn to the proverbial light.

Takes care

Shadowman

 

[Black GT]

I am certain that at some point Rich will share more about this many month project however let it be known at this time that Gen III Whipple and the shared air box tweaks alone did not come close to creating these numbers.

The fuel system was massaged, the MAF was massaged, the air box was massaged and testing presented on barrel rather than pump gas.

The real question is;

With a Gen III Whipple a massaged air box, on 91 octane pump gas what does she present; my gut tells me a number greater than the Gen II however not scope and magnitude.

This project that Rich is tackling is not IMO that which most would want to tackle themselves and is a far cry from the moderate process of installing a Whipple supercharger.

Now having said this; to a person I have shared that on paper the Gen III has the potential for creating a more potent power plant however not in concert with the OEM fuel system and not on 01 octane pump gas.

Let this be as it is; a wonderful shared experience by Rich however do not blindly get drawn to the proverbial light.

Takes care

Shadowman

Shadowman, you always make things a lot more clear. Thanks.:cheers

 

[Rockstar]

Thank you Shadowman:cheers for the pat on the back, I am getting phone calls from all around the country about what we have achieved. In time, I will get you guy's a dyno mumber on the pump fuel tune. I will guess it may be 855 RWHP we will see. Spending more than 300 hours a chunk of change$$$$$ and a lot of BRAIN DAMMAGE:ack we have made about 15 diffrent changes some more significant than others. This for the most part is not rocket science but we have traveled into some uncharted teritory. We are already in the works on some other reacherch and development to improve the GT, I do believe with out going into the motor we can safely reach 1000 RWHP:eek.
Best regards, "Rockstar" Rich Barnes 303-931-5412 at The Mustang Ranch Golden, Colorado

 

[Shadowman]

Thank you Shadowman:cheers for the pat on the back, I am getting phone calls from all around the country about what we have achieved. In time, I will get you guy's a dyno mumber on the pump fuel tune. I will guess it may be 855 RWHP we will see. Spending more than 300 hours a chunk of change$$$$$ and a lot of BRAIN DAMMAGE:ack we have made about 15 diffrent changes some more significant than others. This for the most part is not rocket science but we have traveled into some uncharted teritory. We are already in the works on some other reacherch and development to improve the GT, I do believe with out going into the motor we can safely reach 1000 RWHP:eek.
Best regards, "Rockstar" Rich Barnes 303-931-5412 at The Mustang Ranch Golden, Colorado

Hi Rich and thank you for the comments

I am truly very happy for you and am well aware of the fact that this has been a long, expensive, and at times frustrating project however it appears that your goal is becoming a reality.

Your gal looks happy and soon to be needing a fresh set of tires.

All the best

Shadowman

 

[Gulf GT]

I am certain that at some point Rich will share more about this many month project however let it be known at this time that Gen III Whipple and the shared air box tweaks alone did not come close to creating these numbers.

The fuel system was massaged, the MAF was massaged, the air box was massaged and testing presented on barrel rather than pump gas.

The real question is;

With a Gen III Whipple a massaged air box, on 91 octane pump gas what does she present; my gut tells me a number greater than the Gen II however not scope and magnitude.

This project that Rich is tackling is not IMO that which most would want to tackle themselves and is a far cry from the moderate process of installing a Whipple supercharger.

Now having said this; to a person I have shared that on paper the Gen III has the potential for creating a more potent power plant however not in concert with the OEM fuel system and not on 01 octane pump gas.

Let this be as it is; a wonderful shared experience by Rich however do not blindly get drawn to the proverbial light.

Takes care

Shadowman

Well stated.