Had a Demon in the shop!

"WarShrike" (warshrike) 12/14/2018 at 12:42 • Filed to: None

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Made some solid gains over the stock trim on race gas. We added an upper and lower pulley, offroad connecting pipes, fuel system and E85 to give it a good bump.

Stock w/ MS109 on the H.O. Button: 708 whp, 700  ft/lbs
Modded on E85 on the H.O. Button: 855 whp, 905 ft/lbs
For reference, stock Hellcats tend to do around 600whp stock on the same dyno.

HFV has no HFV. But somehow has 2 motorcycles > WarShrike 12/14/2018 at 14:36

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you;d have to be a made man to buy a Demon and then say “I’d like it more with another 150hp” 

WarShrike > HFV has no HFV. But somehow has 2 motorcycles 12/14/2018 at 14:38

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Haha yeah, some of our customers are adrenaline junkies.

HFV has no HFV. But somehow has 2 motorcycles > WarShrike 12/14/2018 at 14:42

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“this car has a massive supercharged V8 that would make any 15 year old super car wet their pants. C ould you ad the equivalent of a Honda Civic to it? I would like whole Honda Civic’s worth of HP added.”

WarShrike > HFV has no HFV. But somehow has 2 motorcycles 12/14/2018 at 14:56

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Haha yeah, we had just finished up a 1500whp C6 Corvette, pretty much tripled the output lol.

HFV has no HFV. But somehow has 2 motorcycles > WarShrike 12/14/2018 at 14:59

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that is terrifying  

Darkbrador > WarShrike 12/14/2018 at 15:28

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Please e xplain to me what changing the pulleys do. Not sure I understand the concept, here.

Thanks in advance ! 

Long_Voyager, Now With More Caravanny Goodness > Darkbrador 12/14/2018 at 16:08

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Smaller pulley = more air compressed due to spinning the SC faster.

More air = more power.

Die-Trying > Darkbrador 12/14/2018 at 16:08

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changing the pulleys,............ the lower one to a smaller one spins all the accessories slower at higher rpm using less power............ changing the upper one(on the supercharger) to a larger pulley  spins the SC faster supplying more air/fuel to the engine.

Spamfeller Loves Nazi Clicks > WarShrike 12/14/2018 at 16:18

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Now put that engine in a Jeep Grand Cherokee.

Wait. No. A Commander . I dare  you.

Darkbrador > Die-Trying 12/14/2018 at 16:29

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ah ... but the accessories (like the alternator) spining slower means also not working as they should (and not charging the battery) ?

And  a larger pulley on the supercharger would make it spin slower, not faster ?

Die-Trying > Darkbrador 12/14/2018 at 16:52

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yes, i made a slip there. it would be a smaller pulley on the supercharger....... and crank pulleys are reduced by small percentages. accessories like alternators have “threshold speeds” i believe that they are called. basically above a minimum rpm say 500, and the Alt. is working, putting out its 13v.    

WarShrike > Darkbrador 12/14/2018 at 21:36

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So the goal is to run a blower ratio that doesn't over spin it.  We run a 10% overdrive on the crank and a smaller pulley (usually 2.85" on pump gas) to get the blower spinning more which means more boost but at the expense of working the blower more and generating more heat. 

BaconSandwich is tasty. > HFV has no HFV. But somehow has 2 motorcycles 12/14/2018 at 22:37

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Come on now, my Civic only has about 130 hp. :P