rev happy sr. questions/concerns

[projectdrifter]

http://www.mazworx.com/store/?event=displa...amp;product=102 (http://www.mazworx.com/store/?event=displayProduct&product=102)
mazworx cf drive shaft
http://www.optionsauto.com/prodinfo.asp?number=ACT-600230
act pro light flywheel 10.5 lbs

also looking at picking up an unorthodox racing light weight ultra s crank pully

greedy light weight pulley setup.

possibly a crank scraper or windage try setup. there has been some good discussion on fresh alloy about it
http://forums.freshalloy.com/showthread.php?t=164173

i guess the idea behind my research is to lighten and allow the sr to rev faster. basically putting the rotating assembly on a diet. later down the line pistons and rods that are titanium will be in the equation. along with a knife edge and micro polished crank. or possibly a bc/k1 technologies 2.2 crank thats fully balanced(stroker/9:1 compression ti rod/piston combo is the big plan in the next year)
i guess the question concern is. when putting the rotating assembly on a diet. will the lack of inertial/mass hurt me as far as spool goes. just because it is going thru the rpm's dosnt mean it is creating load that will get you in the power band.

i guess the other concern is with all the mass missing will vibrations of the cusco motor / peak performance tranny mounts make the engine less reliable

is the stock crank pully balanced ect ect or have a harmonic balancer built in. will the unorthodox hurt me or should i look into a fluid damaner setup for the crank.

i am running a t67 at the moment but plans are to get my t78 rebuilt and that will be my final turbo of choice. probably run the t67 till i go built and stroked.

i know its alot to think about but it is not as straight forward as shaving weight u have to compromise somewhere parts will always alter something. my concern is what will it alter

[drifter_for_life06]

from personal experience a 1pc alum. shaft and JUN ultra-lite f-wheel made a huge difference alone. 150% satisfied with the rev-happiness of that. Stock pulleys and everything, these two made a huge difference...doubt that helps but thats my input on the topic

[steve shadows]

yeah man I was going to say.

the Flywheel and Driveshadt alone will be more than enough, might even be overkill.

If your running big power or bigger side turbo (like bigger than 2871R) I would stick with the street light and run the Q45 TB, My throttle response is close to lightening fast and I still havent installed a lightened driveshaft yet.

You want the flywheel and driveline to have some momentum (not none) this will allow the car to make a more consistant power, smoother and spool up larger turbos more effectively.

Transient engine response like NA style is not the same as pre-loading the gases in the exaust housing to spin up a big turbo.

Just keep those things in mind and ask around for more personal experiences.

[projectdrifter]

from personal experience a 1pc alum. shaft and JUN ultra-lite f-wheel made a huge difference alone. 150% satisfied with the rev-happiness of that. Stock pulleys and everything, these two made a huge difference...doubt that helps but thats my input on the topic

well i have a cf 1 peice ds.
and a pro light flywheel with a act stage 6 clutch. i was just thinking of ways to make it rev faster or pull thru the power band.

i deffantly have the q45tb down lol along with a few other goodies.
my setup is not done yet but will be very soon hear is a pic of how it sits now but a few more parts have been collected

http://i91.photobucket.com/albums/k285/s145gonewide/mysr20det/ls1srstuff008.jpg

[steve shadows]

well i have a cf 1 peice ds.
and a pro light flywheel with a act stage 6 clutch. i was just thinking of ways to make it rev faster or pull thru the power band.





a smaller turbo ;)

[projectdrifter]

a smaller turbo ;)
i had a feeling you were gunna say that. unfortunatly all i have is a t67 and a t78(t78 needs a rebuild):fruit: there 4 a smaller turbo is not gunna happen.
come on steve we have talked about this before lol
plus i just got this pretty lil thing in the mail last week.
http://i91.photobucket.com/albums/k285/s145gonewide/jpinvoices008.jpg
http://i91.photobucket.com/albums/k285/s145gonewide/jpinvoices007.jpg

[slideways2004]

so a bigger throttle body like the q45 gives quicker response/rev happiness? what about a bigger intake mani like greddy?

[LA_phantom_240]

I'm sure that would be nice to have as well.

[steve shadows]

so a bigger throttle body like the q45 gives quicker response/rev happiness? what about a bigger intake mani like greddy?

Stock intake manifold = more low and mid range torque

more throttle response

due to larger plenum

Smaller Plenum greddy more velocty of given air

more top end upper mid range less low end torque (substantially).

You can run a chambered muffler on a greddy im car to pick up some low end torque (its a little trick I like to sugget) you lose a bit of top end though, but mid range is monsterous.

I have all kinds of wizard robe shit goin on over here.

so do the boys in florida

[statik]

i have an Unorthodox crank pulley, greddy accessory pulleys, 1 piece aluminum drive shaft and a spec flywheel, its great. I had an even lighter flywheel on here but stripped a hole on it, i really didn't notice a huge difference between the two though to be honest.

[cwtt]

Does the lightened crank pulley have some type of harmonic balancer on it? If not, I would never put one one. Usually stock motors have a harmonic balancer built into the crank pulley which keeps it balance. When you remove it to lighten it you can run into a lot of problems.


Also your T78, is it a greddy T78? The reason I ask is because you realize tha the Greddy T78 has a SMALLER compressor than the T67 right?

I have both. The Greddy T78 has a larger exhaust but a smaller compressor. It is only 66mm(somewhere around there) vs 67. Just FYI. Looks like a sweet build by the way!

[cwtt]

Oh, one more thing. I love my T67mm much better than my old T78 (Greddy). <------ Note, on a 2JZ

[sr20boostn20]

all the flywheel, d-shaft, pulleys, help the motor get to rev quicker,

to rev out nice and high 9k you need your self some solid lifters,

the 2.2 stroker kit, will not like to rev as high


thats all i got

[projectdrifter]

all the flywheel, d-shaft, pulleys, help the motor get to rev quicker,

to rev out nice and high 9k you need your self some solid lifters,

the 2.2 stroker kit, will not like to rev as high


thats all i got

yea i know the hla is a big drawback at this point. a built mazworx head with solid lifters and tomei 280 cams will be in the works in the not so far future will fix all that. depending on marks words of wisdom i may just stick with a 272 high lift or tomei solid cam setup all depends what the wizard suggests.

my idea rev limit would be roughly 9,000rpm or 8,500 in that ballpark. this is not a full blown drag car. it is a street beast. with track/drag strip on occasion.

but back on topic it was more related to driveline/rotating assembly.
piston/rod combo possibly a polished knife edged crank. what i am trying to figure out is would a cf ds, lightweight flywheel and accessory pullu combo be to light for street use. would it affect my spool time. when adding the piston rod combo that is lighter will i have 2 worry about the harmonics of the rotating assembly. will the knock sensor pick up more vibrations due to the hardned mounts. i have kinda been:bash: on a wall trying to put a purpose built setup that can also be for loningevity. i dont want to have o tear down mid year for some bs.