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Discussion Starter #1
Hey im new here to this site...it has taken me a while to finally find a 350 site worth registering for. I was just wondering who else here has done forced induction on their 350 and how its going for them. I purchased the greddy twin turbo kit and i love everything about it. hopefully i will go to the track soon once i finish getting everything how i want it and be able to post some time slips.
 

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Thats great.. I too looked into the greddy kit. I want to go turbo, but i think i may end up going with the vortech supercharger.. might get a 300zxtt later to play with
 

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What's the difference between the turbo kit and the supercharger? Does one significantly produce more hp than the other?
 

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there are tons of articles written about both and comparing them.. the 3 main points which i believe make turbos a better options are:

1. less moving parts.. the tubo only has a the spinning turbine, whereas the supercharger has pulleys, gears, belts, and a turbine.. more power loss in mechanical energy.

2. turbos achieve full boost early in the rpm range. if you compare a 10 psi turbo to a 10 psi SC, the turbo may see 10psi at 3500rpm up to redline, however the SC will see somewhere in the range of 3-5 psi at 3500rpm and will not see the 10psi until redline. So turbos generate more power across the board.

3. ... i know i had a 3rd point, but i forgot..

The downside is that turbos are generally more complicated/expensive to install. The difference is usually several thousand dollars.
 

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Main differences would be prices, heat issues, maintenance, reliability and the personal preference of the driver. TT kits are more expensive, creates more engine heat, and seems to have slightly more work needed to maintain. At least that's what I've read from others' personal experience.

But congrats on the TT purchase! Sounds like you're going to have an awesome time. Any pics?
 

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Howstuffworks.com is a great site to go to if you are trying to learn about engines and cars. They explain the difference between turbochargers and superchargers.
 

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Discussion Starter #8
Yeah if anyone wants to see pics of the install and the finished car you can go to http://www.chaosperformancetuning.com/projectcars_350z.html . Also feel free to check out the rest of the project cars on the website. shamless plug! Thats the shop and did all of the work and takes care of me. Not to try to plug anyone....but if you are in the area they are the shop that i would recommend without a doubt. They now know the 350z inside and out. Also to add another upside to turbos..they are ,in my opinion, easier to tune. i.e., boost controllers...all you have to do is play with some knobs instead of changing pulleys as with the superchargers. But either option of forced induction is still a great idea
! Let me know what you think.
 

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I have the vortech SC with a 9lb pulley. So far so good, had not had any problems with it. It has done everything I could have asked for it. I am putting down over 400RWHP and 335lbs of torque.
 

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ATI PROCHARGER....388whp 341 tq last dyno @8psi
Since then added headers and went to 9psi....
Unit is for sale to make way for the APS TT kit
first $3400 takes it..
 

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Superchargers run boost 24/7 from near idle to redline, this can put a lot of stress on the motor. Turbos run boost at higher rpm and don't run any boost at all at low rpms, this can help your motor. With a turbo your motor should run the same untill 4-5000 rpms, then it's boost time.
In my opinion a turbo is better for the everday driver(no point in running 10psi in traffic), and a S/C would be more responsive and fun to drive.(burnouts till sunset)

By the way my z got a new tranny at 14k and a new motor at 29k(in less than a year, thanks nissan)
It is stock. I wont trust anything forcing anything anywhere, unless it's free. I drive/drift it very hard, everyday and love every minute.
 

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Actually, S/Cs run in vacuum at idle. You don't get into boost until you get into WOT or high RPMs (which means it's not extra wear and tear on your engine over a TT set up). You also CAN still run your car N/A with the S/C still in tact, if there's any problem, as well.

Just an FYI.

Given the choice where money is no object, I'd still go with a turbo set up, but I could afford the Vortech and had no problem doing the install myself.
 

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It's nice to know that either setup is good no matter what and depends on what the driver wants to do with it.

At first I thought I would go S/C, mainly because of cost and power at lower RPM's, but now I'm thinking of waiting for APS to release some numbers on their TT kit. There's something magical about having over 400hp and 300 ft-lbs of torque (conservative guess there).
 

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If you intend to upgrade boost and power/engine internals in the future, then a TT would be a better way to go.

If you just want a good solid 350whp-375whp, I think you'd be happy with either kit. An SC will save you about $2K-$4K vs. a good turbo setup. Also the SC is WAAAAY easier to install, and uninstall, if you intend to ever return your car to stock.

one thing I am curios about is 1/4 mile times. Are the TT"s running fast ET's than the SC's of comparble power? Based on some recent posts, it looked like the TT's were definately trapping higher speeds, but the ET's were inconclusive.
 

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Originally posted by drifter@Sep 7 2004, 07:44 AM
Superchargers run boost 24/7 from near idle to redline, this can put a lot of stress on the motor.  Turbos run boost at higher rpm and don't run any boost at all at low rpms

Well that's not technically correct. Twin Turbo systems (Ball Bearing turbos) produce far greater positive pressure at low to mid rpm than centrifugal Superchargers and then keep on producing awesome power (boost) all the way to redline. :thumbsup:

Peter

APS
 

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I recently had the Vortech installed and I'm loving it. Would probably have went with the TT setup but so much more money to do it right.
 

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Originally posted by gq_626@Oct 22 2004, 05:54 AM


one thing I am curios about is 1/4 mile times.  Are the TT"s running fast ET's than the SC's of comparble power?  Based on some recent posts, it looked like the TT's were definately trapping higher speeds, but the ET's were inconclusive.

Good point gq_626 and I'm also curious about 1/4 mile times. One thing for sure the bigger MPH demonstrates the power of the engine (the higher the mph the more powerful the engine is) and the ET has much more to do with the drivers ability and the chassis/tire set up of the car.

I think we will find that over time that the Twin Turbo Z cars will prove to be consistently quicker over the 1/4 mile due to the superior power curve across the entire rpm range over that of the centrifugal supercharged Z cars.

I'm sure that all of the 350 Z guys are going to achieve quicker times as the best suspension, tire, and chassis set up is perfected for the Z car. :clap:

Exciting times ahead for all Z owners. :thumbsup:

Peter

APS
 

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Originally posted by gringott@Oct 22 2004, 11:50 AM
Has anyone installed the HKS system or knows of a review?
Seems to have some rep as a good SC for the daily driver.

Speedracer from the other board was the first to install it. He loved...for a few days, until the main pulley bolt snapped off. There are working on a solution with HKS, and hopefully it was just a freak accident. But otherwise, he had really good things to say about it. Very OEM look and feel. Keep in mind that power is a safer and more modest level...in the 330whp range. :)
 
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