Got boost? I DO! - Page 2 - CarForum.net - Car Forums, Automotive News and Community

Bansheetwin360 · 10-16-2010, 07:36 PM

I down pulleyed down and switched to e85 netting almost 100hp and like 80+ tq.
Number 1 Reason to go E85 = 91 octane is almost 3 Bucks a gallon here, E85 roughly 110 Octane is 2.09

Raptor22 · 10-16-2010, 07:56 PM

Quote:

Originally Posted by Nategr8ns

If you ask me, he probably means a supercharger pulley to increase the pressure.

Nope, that would an overdrive pulley. Kenny was talking about an underdrive pulley:

Quote:

yeah you can get that with a pulley a few tenths of an inch smaller too,

**Mike** · 10-16-2010, 10:06 PM

this is a convo which it would really help to have a clue about turbos/supercharger.

Raptor22 · 10-16-2010, 11:31 PM

Quote:

Originally Posted by wierdo124

this is a convo which it would really help to have a clue about turbos/supercharger.

If you have a supercharger you want to switch to a bigger crankshaft pulley to spin the supercharger belt faster. If you are naturally aspirated, you want an underdrive pulley to reduce the parasitic power loss.

**Mike** · 10-17-2010, 12:01 AM

I figured that much out.

Raptor22 · 10-17-2010, 12:11 AM

Quote:

Originally Posted by wierdo124

I figured that much out.

Thats about the extent of my knowledge...

I know that Kenny is dead wrong about underdrive pulleys bringing 30HP...

I wish.

Felipe the Ant · 10-17-2010, 12:13 PM

Did they ever fix that issue where it screws up cats? (ethanol)

**pbasil1** · 10-17-2010, 06:40 PM

Quote:

Originally Posted by Raptor22

E85 has a higher energy density than gasoline, hence higher power output from the engine. I recall an article in 5.0 Mustang where they switched a 2004 Mach1 from gas to E85 and got a ~30hp and ~25tq improvement at the expense of about 2MPG...

Its worth it.

Wrong, it has less actually, but has a much higher octane rating (105 octane) So you can run higher boost levels, or compression ratios without detonation. You actually have to run 20-35% more e85 through the engine, than gasoline to produce the same power.

tofunater · 10-17-2010, 07:07 PM

Quote:

Originally Posted by pbasil1

Wrong, it has less actually, but has a much higher octane rating (105 octane) So you can run higher boost levels, or compression ratios without detonation. You actually have to run 20-35% more e85 through the engine, than gasoline to produce the same power.

hence why you get lower gas mileage

**Mike** · 10-17-2010, 07:14 PM

Quote:

Originally Posted by pbasil1

Wrong, it has less actually, but has a much higher octane rating (105 octane) So you can run higher boost levels, or compression ratios without detonation. You actually have to run 20-35% more e85 through the engine, than gasoline to produce the same power.

I believe you misread his post...cause you just proved his point lol

10-16-2010, 10:06 PM	#13
Mike Community Director Join Date: Jun 2008 Location: Minneapolis, MN Posts: 7,602 Rep: 153	this is a convo which it would really help to have a clue about turbos/supercharger. __________________ "He shouted: 'You've won! Didn't you know?' I didn't, and it's about the nicest thing I've ever been told" -Bruce McLaren, 1968 Belgian Grand Prix Read the rules! \| DO NOT REPLY TO SPAM Daily Driver: 2006 Mazda 3 S sedan - 2.3L I4, 5 speed manual - 78k miles Girlfriend's Car: 2013 Chevy Volt - 30k miles Bikes: 1979 Yamaha XS 750

10-17-2010, 12:01 AM	#15
Mike Community Director Join Date: Jun 2008 Location: Minneapolis, MN Posts: 7,602 Rep: 153	I figured that much out. __________________ "He shouted: 'You've won! Didn't you know?' I didn't, and it's about the nicest thing I've ever been told" -Bruce McLaren, 1968 Belgian Grand Prix Read the rules! \| DO NOT REPLY TO SPAM Daily Driver: 2006 Mazda 3 S sedan - 2.3L I4, 5 speed manual - 78k miles Girlfriend's Car: 2013 Chevy Volt - 30k miles Bikes: 1979 Yamaha XS 750

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Got boost? I DO!

10-16-2010, 07:36 PM	#11
Bansheetwin360 Member Join Date: Oct 2010 Location: Colorado/Wyoming Posts: 45 Rep: 10	I down pulleyed down and switched to e85 netting almost 100hp and like 80+ tq. Number 1 Reason to go E85 = 91 octane is almost 3 Bucks a gallon here, E85 roughly 110 Octane is 2.09

10-17-2010, 12:13 PM	#17
Felipe the Ant Veteran Member Join Date: Sep 2009 Posts: 553 Rep: 18	Did they ever fix that issue where it screws up cats? (ethanol)