SuperChargers for 370Z

Snakes709

Not sure what a procharger sounds like a WOT, but i would love my 370z to sound like this....with a REAL supercharger, not some stupid exhaust clip on.

YouTube - My 370z vs Supercharged Stage 3 350z

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OKC370Z

You'll have enough traction issues with a centrifigul, install a roots and you will have instant boost and instant loss of traction. My experience in the past has me leaning towards the centrifugal mated with an engine that already makes good low end torque for it's linear power and a roots for an engine that does not have much low end torque and requires high revs to get moving.

Without traction on the street or strip you get:

Chris@FsP

Good to see another Okie on here

MMC Racing

How many Cobra, Lightnings, or ZR1's do you see swapping to centrifugal? If you have a traction problem you solve it with suspension, tires, and weight transfer, not by swapping blowers.

OKC370Z

Who said anything about swapping blowers? The intent of my statement above is for STREET applications. My opinion is that you're better off with a centrifugal rather than a roots type blower because of power delivery, based on what type of motor you have in the first place.

Small motors that make power at higher rpm levels will benefit more from a roots type blower due to lack of torque and power in the lower rpm range. larger motors with good torque characteristics benefit from using centrifiguls since they already have the torque and power down low and need help breathing on the top end.

Both supercharges will work and peform well but after owning both and in different applications I preffer the centrifugal with a motor like the 3.7 in the Z. And the reason why is becaue of traction, I don't have any desire to set my Z up like a drag car just to get better traction when I can make as much usable horsepower with a centrifugal as a roots and have more tractible power in the range I would use it.

Boosted Josh

I don't know about you but 3.7 liters is small in my book.

Tronchaser

Therer's a few of us around.

Chris@FsP

If you make it up to Tulsa stop by the shop!

Tronchaser

Would love to if I'm up in the area... didn't you say you were installing a turbo on someones Z soon? That would be worth a looksee!

JB-370z

If you are all about the sound than you might want to go turbo.

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GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

Chris@FsP

Right now we're doing a GTM TT on an '08 Nismo

OKC370Z

Sorry, missed this earlier. I have emailed you and got a quote for install of a few things, amoung them the Stillen SC. I am in the process or sorting out the financial so I can come visit you in the future. I amy just stop by some day an check out the shop and talk with you.

Typical of the tuning industry I presue you are open on Saturdays?

OKC370Z

It's all relative as far as size and an engines characteristics. Myself, with the good torquedelivery and gearing of the 3.7 in the Z, I beleive the the centrifugal is the better choice for tractibility and control. I have had a few FI rods in my day and it is important to match the FI systems up with the the motor based on the characteristics of the motor i.e. cams, power delivry, before hp and tq levels and where in the power band their the strongest/weakest.

By no meas is the 3.7 a big torquey motor, but it does offer good torque down low and the gearing puts it in the meat of that torque pretty quick. So, to maintain a level of traction and control the centrifugal is the way to go in my book.

Boosted Josh

You are right and I happen to like the way a centrifugal S/C makes power. But in most cases in a stop light to stop light situation positive displacement blowers win.

I guess it all comes down to what you are going for. Sometimes the lack of tractability is what is fun. I like having a car that can get squirly in 3rd or 4th on the highway, it doesn't make for good times around the track but it does make for good entertainment.

Actually the thing about the GTM S/C I like the most is the use of the Rotrex. It seems like it might be a good balance between the two.

Jordo!

While a centrifugal blower will work well on this motor, you just can't beat a properly sized roots SC for a nice flat torque curve and nigh-instant boost

A roots blower's one weakeness is top end potential (here the centrifugal will win the day) -- of course, for that you just match it to a big turbo for twin-charged madness

Without a doubt, if a roots blower kit is developed, it will eventually find its way onto my car

For reference...

Attached Images

FI_comparison.jpg (26.7 KB, 19 views)

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