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 FAQ: Superchargers 
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Post FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG><BR>Any why is nitrous bad on an Eaton blower? They benefit BIG time from the intercooling effect.<P>Vortechs are crap....im sorry, but I just dont get it... why would you intentionally use something that only gets high end power, yet isnt as efficient as a Turbo?</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:42 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Anthony Thomas:<BR><STRONG><P> Who gave you that idea? They can be VERY efficent. Only slightly less than a turbo and more than most roots-type superchargers. The Honda kits don't make big numbers down low, because the engine doesn't make big torque numbers either. With a small V5 Vortech you can plenty of thrust at 3000rpm, esp on the KL V6 engine. Trust me, if you have driven one or riden in one you would understand what I'm talking about. There's no lack of power downlow in a properly tuned compact with forced induction.</STRONG><HR></BLOCKQUOTE>

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October 27 2002, 8:43 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG><P>The size of a Centrifugal supercharger has ZERO to do with how soon it starts to give meaningful amounts of power increase. Boost is a factor of the blade speed to the 4th, and blade speed is directly linked to engine RPM on a belt driven supercharger.<P>My ideas about efficiency are this... sure they are as abiaticly efficient as a turbo, but now add in the fact that the thing is draining on the engine through parastitic loss. You have as much power, and you DONT get low and midrange power. They are popular with the V8 crowd because low and midrange power is what a v8 has plenty of. They need top end, which is exactly what a Vortech style kit will give you. If you have some dyno data to prove otherwise, im all ears.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:43 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG>For a dyno chart:<BR> <A HREF="http://www.mazdamaniac.com/images/stills/dyno.jpg" TARGET=_blank>www.mazdamaniac.com/images/stills/dyno.jpg</A> <P>200 HP by 3500 rpm with the peak at 5500, not too shabby for a POS Vortech supercharger on a KLDE with stock internals....<P>Yes, blade speed is directly linked to engine rpm on a supercharger but if you put a small sprocket on the supercharger and a bigger one on the other end of the drive belt, then I guess the boost could get up a little faster than you might think.<BR> ;)<P>[ October 09, 2002: Message edited by: pelado ]</STRONG><HR></BLOCKQUOTE>

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October 27 2002, 8:44 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG><P><BR>but you still need to base your size sprocket off what the max boost will be at redline. This limits midrange.<P>My opinion... you have 3 choices:<P>NA: for those who like being slow and running high rpm ;) (your welcome <BR>David)<P>Roots blower: full boost everywhere, and a flat torque curve<P>Turbo: most power, but at cost for turbo lag<P><BR>For more indepth about this subject...please read 2 threads off protegeclub where we have discussed this before.<BR> <A HREF="http://www.protegeclub.com/forum/showthread.php?s=&threadid=10623&highlight=centrifugal+supercharger" TARGET=_blank>http://www.protegeclub.com/forum/showthread.php?s=&threadid=10623&highligh t=centrifugal+supercharger</A> <BR> <A HREF="http://www.protegeclub.com/forum/showthread.php?s=&threadid=599&highlight=centrifugal+supercharger" TARGET=_blank>http://www.protegeclub.com/forum/showthread.php?s=&threadid=599&highlight=ce ntrifugal+supercharger</A> <P>I've made my point before...dont feel like typng it all again.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:45 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG><P>It made me quite weary as well. ;)<P><BR>I guess you didn't want to comment on the dyno run, eh? Quite different from the one you posted in the linked thread.<P>[ October 09, 2002: Message edited by: pelado ]</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:46 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG>Jeff Abrams made his Vortech work quite well.<BR>Visit his site for details.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:46 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG>define "very well" ? peak numbers and times dont really mean much, because nobody has done a good roots blower setup, or a turbo. Of course a Centrifically supercharged KL is gonna be fast....all im saying is that it could be faster...and or have a bigger, wider powercurve.</STRONG><HR></BLOCKQUOTE>

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October 27 2002, 8:47 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG><P>Go look at his site, I'm not gonna repeat all that stuff here. It makes me weary. ;)</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:47 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG><BR> <A HREF="http://www.mazdamaniac.com/images/stills/dyno.jpg" TARGET=_blank>http://www.mazdamaniac.com/images/stills/dyno.jpg</A> <P>There's his dyno... and its exactly what i dont like. He's gaining 100 hp from 3000 rpm to 5000 rpm. Thats too much, too fast, IMHO. A roots blower would be better, again in MY opinion as far as driveability....its just less peaky, at the cost of some top-end efficiency.<P>It's just not my idea of a good compromise. I realize it works well for him, but i see better options.<P>Agreed to disagree on this.<P>[ October 11, 2002: Message edited by: ProtegeSTS ]</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:47 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG>Yeah, I posted that further up this thread.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:48 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by mazdamaniac:<BR><STRONG><P><BR>I'm not sure what you mean by "too much, too fast".<BR>I believe that you <I>ALLWAYS</I> want <I>ALL</I> of your power <I>IMMEDIATELY</I>.<BR>Then, you use it judiciously by <B>modulating the gas pedal</B>.<BR>I don't EVER want a power curve to drive my vehicle for me.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:49 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ProtegeSTS:<BR><STRONG><P><BR>Jeff, say you had a properly sized roots blower on your car. What do you think the powercurve would look like? I'd wager it would get more power through a signifigant potion of the powerband.</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:49 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by pelado:<BR><STRONG><P>Yeah, kind of like Jeff Abram's Vortech SC dyno plot posted above. <P> :D :D :p<P>[ October 21, 2002: Message edited by: pelado ]</STRONG><HR></BLOCKQUOTE>

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David Coleman
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October 27 2002, 8:50 PM
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Post Re: FAQ: Superchargers
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by mazdamaniac:<BR><STRONG><P>Uh, a "properly sized" roots-type would have a curve just like mine only with the torque <I>decreasing</I> after the peak at 4k RPM.<BR>Have you actually <I>looked</I> at my dyno plot? :roll:<BR>I'm making over 180 ft/lbs of torque before 3500 RPM! Would a "properly sized" roots-type do better? Not if you still wanted the thing to be breathing over 6000 RPM...<BR>Also, there isn't really much to do to get a "properly sized" roots-type - there are only two sizes that apply. The centrifugal has WAY more options for sizing.<P>That said, I am in the middle of installing a T3/T04 turbo in the car at this very moment...<P><A HREF="http://www.mazdamaniac.com/turbo/turbo.htm" TARGET=_blank>some pictures of the install</A><P>[ October 20, 2002: Message edited by: mazdamaniac ]</STRONG><HR></BLOCKQUOTE>

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October 27 2002, 8:50 PM
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