[hubba076]

Does anybody have any opinions on these. I have been pondering for a while what to do. Originally I wanted to get a procharger, then was intrigued by the Twin Turbos, now I'm thinking about a Kenne bell twin screw.

What I've considered:

Procharger, Vortech, etc.: Great horsepower, but can lag almost as much as a turbo at times. Seemingly limited boost (correct me if I'm wrong). Less expensive method.

Turbos: Again great performance, but as stated above are known for lagging (gotta stay on that throttle), especially at idle, but insane after they wind up. Very difficult and expensive installations.

Kenne bell: Great overall performers, variable boost ranges, expensive but installation is easier compared to other methods. Oh and immediate exponential power throughout powerband.

Don't get me wrong...all three are great performers, but based on some of the numbers I've seen I think the Kenne bell is the best option. I think I will go with the 2.6l model (for 1999-2004 gt's 9-26psi).

Anyone else want to comment or have opposing views Id really like to hear them.

[sonicblue]

hope you have a built motor if you are gonna use the 2.6 what are your plans with the car? if its mostly a street car the kenne bell is cool cause its instant boost. i like the procharger or centrifigal style because the power comes on gradual which makes it easier to launch in my opinion. and it pulls like hell above 3k rpms. but if you just plan on messing around on the streets the kenne bell will prolly make you happier. turbo is going to make the most power but like you said its more expensive.

[RyanGT]

i have the 2.1 9psi and its great! ill probably do the pulley swap for the 14 psi . Was at 400+ horses with 9 psi

[hubba076]

I don't have a built (forged) motor yet...but plan to soon. I plan on using the car on the strip and on weekends.

What makes you say that Kenne bells are meant for messing around on the streets? The particular application that I inquired to (2.6l) has a 850+ hp potential if it is set up right: forged rotating assemblies, cams, heads, etc.

I've seen some vids, one of them was a Kenne bell GT taking on a turbocharged car and it definately wasn't messing around at all.

How has the procharger worked out for you as far as performance, etc. ???

[hubba076]

Originally Posted by RyanGT i have the 2.1 9psi and its great! ill probably do the pulley swap for the 14 psi . Was at 400+ horses with 9 psi

Just out of curiousity how much did the 2.1 run you $$$. Intercooled or not?

[sonicblue]

i just meant by messing around that if you just plan on a lot of street driving and wanted to play with other cars on the street its a fun blower cause of the instant power. if you just wanted to put a blower on it and be done and do nothing else to the car i like the kennebell. i just drive my car once and a while and at the track whenever i can and i love the procharger for that. it pulls hard all the way to redline. i love the procharger, the only thing i would say if you are going witha procharger get the d series.

[hubba076]

Originally Posted by sonicblue hope you have a built motor if you are gonna use the 2.6 what are your plans with the car? if its mostly a street car the kenne bell is cool cause its instant boost. i like the procharger or centrifigal style because the power comes on gradual which makes it easier to launch in my opinion. and it pulls like hell above 3k rpms. but if you just plan on messing around on the streets the kenne bell will prolly make you happier. turbo is going to make the most power but like you said its more expensive.

You've got a nice setup going with that procharger. Whats the max boost potential you can get out of that procharger? I see you are a running 13 psi.

[RyanGT]

Was intercooled and Is about 5k for just the kit (without tax or shipping). I got the 90mm mass air and cold air intake though too. Which was about 600 more i think...

[sonicblue]

its gonna depend on your engine set up how much boost you get. for the p series i am about maxed out on boost. when i upgrade to the d series with the same size pulley i will be running about 18-19 pounds.

[DrHolliday]

I've also got the 2.1L KB @ 9psi. It is intercooled.

I love thet thing, it made the car a absolute blast to drive. I'm also planning on uping the boost on mine to 14psi after a forge the block, and install some heads and cams. My goal is to be over 600 rwhp witch I think is very possible.

Are you planning on doing the work yourself or having a shop install it?

And like RyanGT said, the kit was 5k, the 90mm MAF and CAI was an extra 600, total with shipping to hawaii cost my 6k.

[Garhfer]

you'd rather go kb than twin turbo'd are you crazy? Twin Turbos have a lot more potential

[SWEET2KSTANG]

you can limit the lag with turbos with t4 headunits, ceramic coated headers and piping, and turbo wrap. centrifugals have very little lag, make good power on the higher rpm's, efficient, and are great for street strip applications. kenne bell is powerful on the bottom end, efficient, but has power drop off in the higher rpm's. if you go with a s/c and a lot of boost you will need to invest into bottom end, head work, and an 8 rib conversion. if a street monster is what you want with a lot of boost, go with a centr. if you want a s/c with a$$ loads of bottom end torque and grunt go with a twin screw. if over all power numbers is all you are after, turbos.

[DrHolliday]

Originally Posted by SWEET2KSTANG you can limit the lag with turbos with t4 headunits, ceramic coated headers and piping, and turbo wrap. centrifugals have very little lag, make good power on the higher rpm's, efficient, and are great for street strip applications. kenne bell is powerful on the bottom end, efficient, but has power drop off in the higher rpm's. if you go with a s/c and a lot of boost you will need to invest into bottom end, head work, and an 8 rib conversion. if a street monster is what you want with a lot of boost, go with a centr. if you want a s/c with a$$ loads of bottom end torque and grunt go with a twin screw. if over all power numbers is all you are after, turbos.

I know the roots style blower drop off in the high rpm's but I've never heard of a twin screw dropping off.

I have the dyno sheet to mine and it hit its peak HP right around 5900 and didn't drop off. The rev limiter is at 6200 and I was in the 360-370hp range from from 5500 up

[SWEET2KSTANG]

it also depends on the blower size and how much boost you run through it. if you have for example a 2.6 at 10psi. there shouldnt be any drop off just for the fact the blower is hardly turning. a 2.1 would give a faster 10lbs without dropping off, but power would start to level out at the top. this theory would be better looked at a terminator with an eaton and a terminator with a kenne. same rule, not trying to start a riot or opening a can of worms. the twin screws are the same way, but the drop off isnt anywhere near as bad.

[DrHolliday]

I know what your saying. I've just read too many post where people think the roots style and twinscrew style are one in the same.

I'll have to see if mine drops off when I up it to 14 psi. But my build still won't take me past 6,200 rpms so I still might be too low to see a drop off.

[SWEET2KSTANG]

that sounds about right, the 2.1 will take power up quiet a ways but will peak somewhere as with all superchargers. my buddy went to school for forced induction and nitrous applications, and we been dealing with this kind of stuff for our builds that we do.

[hubba076]

Originally Posted by DrHolliday I've also got the 2.1L KB @ 9psi. It is intercooled. I love thet thing, it made the car a absolute blast to drive. I'm also planning on uping the boost on mine to 14psi after a forge the block, and install some heads and cams. My goal is to be over 600 rwhp witch I think is very possible. Are you planning on doing the work yourself or having a shop install it? And like RyanGT said, the kit was 5k, the 90mm MAF and CAI was an extra 600, total with shipping to hawaii cost my 6k.

Glad to hear you like it. I'm looking forward to getting it done...with the 2.6l though I have a long way to go, with forged internals, tranny mods, etc.

I plan on doing the work with the help from an experience family mechanic. He's done numerous s/c and turbo systems throughout the years. He really knows his shit. I do to an extent, but experience is always gonna beat general knowledge. Plus, I can get all my stuff done for dirt cheap.

btw: Does anybody know why in the hell I have advertisements on my posts???

[hubba076]

Originally Posted by Garhfer you'd rather go kb than twin turbo'd are you crazy? Twin Turbos have a lot more potential

I have to do something more practical financially as well as something that will suit my needs (weekend driver/daily driver and some strip).

I know that some day I will have another car that I will have Twin turbo charger put in, but for now I going with a supercharger.

[DrHolliday]

I don't see any advertisements?

How much boost are you planning to run?

And something to keep in mind, but you seem to be doing your homework. The 2.6L won't fit under the stock hood, good reason to get something better!

[hubba076]

Originally Posted by DrHolliday I don't see any advertisements? How much boost are you planning to run? And something to keep in mind, but you seem to be doing your homework. The 2.6L won't fit under the stock hood, good reason to get something better!

I plan on starting out with 9 or 10 and will slowly work my way up. I have to buy the pulley kit kenne bell offers.

Hood won't fit??? Thats an easy one that I have already looked into. All I have to do is get a Cobra R hood. Looks badass and is about 20-30lbs lighter than stock. (fiberglass or carbon fiber)