Radically Redesigned Wicked Wheel? makes 43 PSI on my STOCK turbo! - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 300 (permalink) Old 12-08-2012, 02:53 AM Thread Starter
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Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

Okay... So I finally got off my lazy butt this morning and went over to the shop to test the new Gen 2 Wicked Wheel (that's MY name for it...) I got from Bob Riley last week while at PRI. (PRI, by the way, was AWESOME! Great show this year.) The original Wicked Wheel is familiar to most Power Stroke guys as the inexpensive wheel that helps eliminate Compressor Surge under certain conditions. What is Compressor Surge? I'm glad you asked. Compressor Surge is the condition in which air being drawn into the turbo stalls and "burps" back out the inlet. This is similar to Cavitation, a common problem in boating where the propeller is unable to properly channel water through the blades. This video shows what Compressor Surge sounds like on a stock Garrett turbo...


Anyway, the original Wicked Wheel was extremely effective in removing the surging, but in some instances it also lost a couple PSI of boost as well. This was generally accepted as the price to pay for the elimination of Compressor Surge. Not anymore.

The new wheel is a pretty drastic departure from both the stock compressor wheel and the original Wicked Wheel. These images show just how radical the new design is...

Stock (Click on images to enlarge)...



Gen 1 Wicked Wheel (Click on images to enlarge)...



Gen 2 Wicked Wheel (Click on images to enlarge)...



The pictures clearly show the effectiveness of the new design, but what I didn't expect were the results we achieved when we put this little puppy on my truck today.

Just for reference, my test mule is a 2001 F250 7.3L with 240,000 miles on the original PMR engine. I am currently running a set of Stage 1 Single shot injectors, stock HPOP, stock turbo, stock fuel system, Tymar intake, and 4" exhaust. When I say it's nothing special, I mean it. It's a solid daily driver and that's all I expect from it.

I pulled the truck on the dyno this morning to get some current baseline power numbers. After a few runs in both a 100 Performance and 140 Extreme program, I climbed in and started pulling the turbo off. I am seriously wondering if in 240,000 miles this turbo has never been off because that back clamp on the turbo was a freaking SOB to get off. I don't think I've EVER had one fight me that bad, and I've done quite a few!! After finally yanking the turbo off, I split the housing off the exhaust and then removed the compressor housing. The stock compressor wheel actually looked quite impressive given its age, and a quick test of the turbo shaft end play and lateral play set my mind at ease as to the reliability of the turbo itself. A quick spin and the new wheel was in place, and after replacing the compressor housing I made sure the new wheel wasn't going to turn into a high speed router and mill the housing to bits. 20 minutes later and the turbo was all snug and nestled back in its little hole. Time to see what's what.

I fired the truck up and let everything settle back in. Gotta make sure them turbo bearings are nice and lubed up before I go thrashing it. About the time I got the tools cleaned up and put away, the truck was ready for some [more] abuse. I started off with a surge test, similar to the one I did before taking the turbo off. Locked in 4th with the converter locked, I loaded up the dyno and rolled into the throttle. No doubt about it... The surge was gone! Check this video...


We wasted a couple runs just to get the EOT up to operating temp and then we got serious and started dynoing. What I discovered was astounding. First off, on the 100 HP tune we picked up a solid 20 HP with no other changes! On the 140 HP tune, we picked up a peak of 12 HP and almost 20 HP above 2500 RPM. However, this is nothing compared to the fact that the boost output jump from about 30-31 PSI at 3400 RPM to 43 PSI!! Can you say "Holy Crap?" I know I did! Check this video...


Now, keep in mind that my truck already runs pretty darn clean. I don't have any excess fuel to speak of, so the turbo is basically squeezing the last ounce of efficiency out of the fuel I do have. I am EXTREMELY curious as to how this would react to a truck with 180cc, 200cc, or larger injectors installed. Imagine... an otherwise Stock turbo being able to handle 200cc+ injectors without any real issue? It's staggering. Looks like I might have to retire the Stage 1's and step up to the plate for some Stage 3 Hybrids. Who knows, I may even be able to have a reliable 500 HP daily driver on a thrashed 240,000 mile PMR engine. At least I know the tuning won't be an issue. With my trusty dyno and CP tester on hand, I may even go for 600 HP. I seriously doubt a stock turbo will accomplish that, though, regardless of what wheel we put on it. Haa haa haa. At that point, it might be time for a B/W S472 or maybe twins. We'll see. I'm still monkeying around with the 6.0L and have some more things to do with that before I play with the 7.3L any further.

I'm still going through all the datalog information and will have some of that to post up later this weekend. In the meantime, pull up a chair and enjoy the videos.

Take care.

Bill Cohron - (678) 890-1110

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post #2 of 300 (permalink) Old 12-08-2012, 03:02 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

impressive amount of boost for a stock turbo.

2001 F350 7.3 CCSB 4X4 - 6-position chip (Bean's) - Riff Raff 6637 intake kit - foil delete - 8" single stack - 6" lift (unknown brand) - 05 front end conv w/HID projector - 20x10 XD strike - Federal couragia 35x12.50x20
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post #3 of 300 (permalink) Old 12-08-2012, 03:20 AM Thread Starter
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

What's interesting is that in looking through the datalogs, the backpressure is right at 52 PSI with both wheels. This means the turbo isn't really working any harder, just more efficiently.

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post #4 of 300 (permalink) Old 12-08-2012, 03:26 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

impressive

542RWHP "E99" True 5" exhuast system/910's/arp head studs/t-500/RR with fuel system/SB pushrods/gated S366 turbo/250-100/HPX/cutom intake/ DI 6 point/ gear head tunes/BTS
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post #5 of 300 (permalink) Old 12-08-2012, 03:36 AM Thread Starter
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

Those were my sentiments exactly. When I first dynoed the new wheel I didn't even notice the boost. I was too busy watching temps, ICP, and other stuff in the datalogs. Unfortunately, the datalogger uses the MAP sensor for boost, which is about as useless as an elevator in an outhouse. After the 3rd or 4th run I happened to notice the boost gauge and about crapped myself when I saw it hit 40+ psi. I called Bob and told him I picked up over 10 PSI of boost and he though I was joking. So, I took a video of the gauge and sent it to him. A picture is worth a thousand words, as they say.

Bill Cohron - (678) 890-1110

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post #6 of 300 (permalink) Old 12-08-2012, 05:27 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

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Originally Posted by PowerHungry View Post
Those were my sentiments exactly. When I first dynoed the new wheel I didn't even notice the boost. I was too busy watching temps, ICP, and other stuff in the datalogs. Unfortunately, the datalogger uses the MAP sensor for boost, which is about as useless as an elevator in an outhouse. After the 3rd or 4th run I happened to notice the boost gauge and about crapped myself when I saw it hit 40+ psi. I called Bob and told him I picked up over 10 PSI of boost and he though I was joking. So, I took a video of the gauge and sent it to him. A picture is worth a thousand words, as they say.
Pretty wild what a little redirected air flow can do.. Good job! this should sell Very well.

542RWHP "E99" True 5" exhuast system/910's/arp head studs/t-500/RR with fuel system/SB pushrods/gated S366 turbo/250-100/HPX/cutom intake/ DI 6 point/ gear head tunes/BTS
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post #7 of 300 (permalink) Old 12-08-2012, 06:26 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

Very nice, when can we expect these out? And how well they be priced compared to the gen 1 wheels

1997 EC LB F250 4x4 5 speed. Modded and SOLD

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No Limit tuning, modded 38r, WW2/turbomaster, FF Stg 2's, FRX, OB Annihaltor, 5" exhaust, DIY intake, Built trans, tru-cool cooler w/dual fans, SRP1.1, GS gauges and CTS insight, 160amp alt, 2010 tailgate/lights/mirrors, leveled on 20s and 35's and bilstein's. 12.9 @ 101mph.
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post #8 of 300 (permalink) Old 12-08-2012, 06:34 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

Wow I want to buy one! Its awesome how the 7.3 still has some exciting things coming out. Is that still using the wastegate?

E99 7.3***230/100 PIS sticks***swamps tuning*** 4" mbrp***t500 HPOP***6637 filter***BTS valve body***racerx torque convertor***di reg return***walbro fuel pump***20x10 fuel hostages with Nitto 305 terra grapplers
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post #9 of 300 (permalink) Old 12-08-2012, 08:05 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

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Originally Posted by CanadianPS View Post
Very nice, when can we expect these out? And how well they be priced compared to the gen 1 wheels
yep put me in line for 1 too!!!!!! well actually 3.......

99 f350 7.3 srw super cab 290xxx miles zf LUK clutch bully dog afe and 4" mrbp
00 f350 7.3 drw cc 165xxx miles 4" exhaust auto
00 ex 7.3 afe 4" MRBP 185xxx miles 4" exhaust
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post #10 of 300 (permalink) Old 12-08-2012, 08:15 AM
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Re: Radically Redesigned Wicked Wheel® makes 43 PSI on my STOCK turbo!

I would probably be interested in one as well.

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