? for Crash
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Joined: Feb 2004
Posts: 107
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From: Texas
Just wanna chime in... I agree that you HAVE to go with what makes you feel best! Anyway you go with supercharging is MUCH better than n/a. It's an easy (relatively) way to bolt on a boatload of horsepower and torque. With the 9# ProCharger (and fuel mods and a good tune), I can now light up the tires off of the line in my 4x4 SCrew.... trust me... I couldn't do that before.
I spent about 6 months agonizing over cent v. roots... obviously I went with the cent but I doubt I'd be disappointed with a roots blower. Anyway you go, you'll be MUCH faster than before. Bring on the Tahoes and Denalis!!!
Levi
I spent about 6 months agonizing over cent v. roots... obviously I went with the cent but I doubt I'd be disappointed with a roots blower. Anyway you go, you'll be MUCH faster than before. Bring on the Tahoes and Denalis!!!
Levi
Member
Joined: Feb 2004
Posts: 13
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From: San Luis Obispo, CA
Boy Crash you get around,
The Allen graphs you showed had no relation to this topic. You showed an Allen 4.6 system and a 4.6 race system for a car. By the way the race system has a screw blower not a roots. For an Allen distributor your sure do talk poorly of them.
Once again it is ADIABATIC. People are not change the blowers because of this it is because the screw blowers are bigger and people have this idea that bigger is better.
Taterthedog - I am new to this page, but you can check out some of my posts and pics on Ford Truck World. I run a roots blower on my 4 wheel drive F-150. I also tow a '67 Bronco on a trailer that weighs 2000#. Combined this is about 5500# or so. I wouldn't change a thing with my truck, the roots blower works awesome. And NO it does not fall off on the top end. If you want to see what everyone is talking about as far as the centri not giving noticable power until 3500 and up, ask someone for a dyno graph that also shows boost level. You will see that the centri ramps up where a roots is fairly level.
Bye CRASH!!!!!
BTW - I run 37 inch Goodyears on my F-150 and have no problem lighting 'em up!
The Allen graphs you showed had no relation to this topic. You showed an Allen 4.6 system and a 4.6 race system for a car. By the way the race system has a screw blower not a roots. For an Allen distributor your sure do talk poorly of them.
Once again it is ADIABATIC. People are not change the blowers because of this it is because the screw blowers are bigger and people have this idea that bigger is better.
Taterthedog - I am new to this page, but you can check out some of my posts and pics on Ford Truck World. I run a roots blower on my 4 wheel drive F-150. I also tow a '67 Bronco on a trailer that weighs 2000#. Combined this is about 5500# or so. I wouldn't change a thing with my truck, the roots blower works awesome. And NO it does not fall off on the top end. If you want to see what everyone is talking about as far as the centri not giving noticable power until 3500 and up, ask someone for a dyno graph that also shows boost level. You will see that the centri ramps up where a roots is fairly level.
Bye CRASH!!!!!
BTW - I run 37 inch Goodyears on my F-150 and have no problem lighting 'em up!
Last edited by 4bylightning; Feb 26, 2004 at 03:18 AM.
Senior Member
Joined: Feb 2001
Posts: 641
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From: Calgary, Oilberta
Originally posted by Crash!
BTW- ADIABATIC efficiency is related to the compressor itself, not necessarily from a SYSTEM stand-point (The ability to compress air occurring without loss or gain of heat). Normally measured in a percentage.
BTW- ADIABATIC efficiency is related to the compressor itself, not necessarily from a SYSTEM stand-point (The ability to compress air occurring without loss or gain of heat). Normally measured in a percentage.
Adiabatic Eff (%) = Heat Increase Calculated by Ideal Gas Law/ Actual Heat Increase *100.
Adiabatic Eff must always be less than 100.
Taterthedog - You asked for opinions on the positive displacement blowers - I love my Magnacharger and I tow a 7000# trailer frequently for hundreds of miles.
Ian
Last edited by Ian N; Feb 26, 2004 at 08:48 PM.
Senior Member
Joined: Mar 2001
Posts: 401
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From: augusta, GA
exactly true. thermodynamically speaking, anytime air is compressed, heat is a byproduct. since energy can neither be created nor destroyed, the power which is made by compressing the air must be offset by negative byproducts. i think what crash is getting at is the the heat is exhanged efficiently by the intercooler. just not saying it the right way. the most efficient would be the one which can balance keeping the most power on the table while losing the least to heat.
Thread Starter
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Senior Member
Joined: Sep 2002
Posts: 557
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From: Canada
Ian N..Where did you buy your magnacharger?
Did you buy here in Alberta? 
I am looking for local distributors to check prices etc.
On another note I just received an information packet from Procharger.
It even comes with a DVD.
I am looking for local distributors to check prices etc.On another note I just received an information packet from Procharger.
It even comes with a DVD.
Senior Member
Joined: Aug 2001
Posts: 283
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From: Western New York
taterthedog,
It's nice to see other guys supercharging their 4x4 Screws - more power to ya! I not going to say anything bad about other superchargers, I'll stick to why I bought a Kenne Bell system. First, I really like what I got out-of-the-box; it produces awsome power down low where I do most of my driving. I pull a 4 horse trailer, hunt, 4 wheel in winter, alot of city driving, etc. and this truck can do it without having to grunt - excellent driveability! Off the line the power is great; I admit to taking it to the track 4 times last year to see how it performs - first time out I beat 6 cars, anything from a 2002 Cobra, GTs, Camaros, ricers, and even a 2003 Corvette, My 60 foot time was 1.97 seconds, not bad for a 5400# truck; 0-60 mph in less than 6 seconds. Just think, I do all this from what I got out of the box; it comes with a custom chip (still using the KB chip), 36# fuel injectors (no FMU), Boost-A-Pump (works great!), the only thing KB suggests you purchase outside the kit is Denso Itanium T-20 plug and gap to .035.
If you are looking to install yourself, I would recommend purchasing it from Bob Kennedy of www.kennedysdynotune.com, he is an expert on supercharging and will provide free technical support. I installed the KB last March and already have 25,000 miles on it and I really run it hard - it hasn't lost a step!
The installation was pretty stright forward; it took 10 hours total over a Friday night and Saturday after noon. I did install one other thing, a homemade water/alcohol injection system. It probably cost about $250.00 in parts, but I got a pretty good system to keep the air charge temp lower at WOT; never gets over 1400 degrees at 10# boost.
I heard some guys who don't own KBs complain the blower belt is driven off the extented alternator pulley. KB provides a new pulley to replace the stock so the main belt drives closest to the alternator and the blower pulley in front of that. The nice thing is the pulley gets a more even load distribution with both belts load pulling in the opposite direction - these KBs are well engineered.
In short, I think for my 5400# SuperCrew, the KB wins! It gives me what I bought it for, 99% street and 1% track with awsome driveablility doing either - good luck on your purchase!
It's nice to see other guys supercharging their 4x4 Screws - more power to ya! I not going to say anything bad about other superchargers, I'll stick to why I bought a Kenne Bell system. First, I really like what I got out-of-the-box; it produces awsome power down low where I do most of my driving. I pull a 4 horse trailer, hunt, 4 wheel in winter, alot of city driving, etc. and this truck can do it without having to grunt - excellent driveability! Off the line the power is great; I admit to taking it to the track 4 times last year to see how it performs - first time out I beat 6 cars, anything from a 2002 Cobra, GTs, Camaros, ricers, and even a 2003 Corvette, My 60 foot time was 1.97 seconds, not bad for a 5400# truck; 0-60 mph in less than 6 seconds. Just think, I do all this from what I got out of the box; it comes with a custom chip (still using the KB chip), 36# fuel injectors (no FMU), Boost-A-Pump (works great!), the only thing KB suggests you purchase outside the kit is Denso Itanium T-20 plug and gap to .035.
If you are looking to install yourself, I would recommend purchasing it from Bob Kennedy of www.kennedysdynotune.com, he is an expert on supercharging and will provide free technical support. I installed the KB last March and already have 25,000 miles on it and I really run it hard - it hasn't lost a step!
The installation was pretty stright forward; it took 10 hours total over a Friday night and Saturday after noon. I did install one other thing, a homemade water/alcohol injection system. It probably cost about $250.00 in parts, but I got a pretty good system to keep the air charge temp lower at WOT; never gets over 1400 degrees at 10# boost.
I heard some guys who don't own KBs complain the blower belt is driven off the extented alternator pulley. KB provides a new pulley to replace the stock so the main belt drives closest to the alternator and the blower pulley in front of that. The nice thing is the pulley gets a more even load distribution with both belts load pulling in the opposite direction - these KBs are well engineered.
In short, I think for my 5400# SuperCrew, the KB wins! It gives me what I bought it for, 99% street and 1% track with awsome driveablility doing either - good luck on your purchase!
Last edited by BruceScrew; Feb 28, 2004 at 07:42 AM.
Senior Member
Joined: Feb 2001
Posts: 641
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From: Calgary, Oilberta
Re: Ian N..Where did you buy your magnacharger?
Originally posted by taterthedog
Did you buy here in Alberta? I am looking for local distributors to check prices etc.
Did you buy here in Alberta?
I am looking for local distributors to check prices etc.Western Motor Sports in Calgary also sells the Magnacharger, Vortech and the Procharger. Unlimited Performance in Calgary sells the Paxton
Any of these are reputable shops and WMS has a dyno to tune the system. You could also buy from Crash but you will pay big time on customs clearance if it comes UPS.
Ian
Last edited by Ian N; Feb 29, 2004 at 01:33 PM.