HKSpoweredFC3S

How much HP at the *crank* can a N/A driveshaft/rearend handle?
FYi, S5 gxl/S5 turbo motor and trans/mazdatrix custom driveshaft *turbo trans to n/a rear*

thanx, jacob.

HKSpoweredFC3S

Because overtime within a few months i plan to have around 400hp.

Icemark

HP and torque are two different things...what are you thinking you are going to try and do??? "S5 gxl/S5 turbo motor and trans/mazdatrix custom driveshaft *turbo trans to n/a rear*"????

SouthSideSlider

last thing i heard was aaron cakes 6port tubeo run an N/A drive line so it hace handle atleas what hes pushing. i may be wrong there jamin swears thats the case.

SDrotary-FC

check out some of the V8 swap guys (they run 300+hp and drag race them)

if you are really making 400hp to the wheels and you run slicks you'll probably break something. (axle shaft)

tuto88t2

wat would u suggest to make the rear take that much hp?

arghx

iTrader: (3)

I blew my stock n/a LSD with 129 lb/ft of torque to the wheels. But that was with probably 30+ 6000rpm launches and I stupidly had a puck clutch in there.

SDrotary-FC

i would run a turboII one and see how it does

or you can try this
"UPGRADED" DELUXE PACKAGE
'86-'91 RX-7 TA/SA 8.8 Deluxe "Upgraded" Package...
..."Upgraded" package additions include...
All items listed above in the Bolt-In Deluxe Package, with the addition of the following option parts, and a money saving package price.
Additions include
Extreme Duty rod end style adjustable 1-1/4" lower links
Fabricated watts linkage w/ rod end style links
Deluxe "Upgraded" package price......$3195.00
Detroit Locker diff option.........add 200.00
Tru-Trac Torsen diff option........add 150.00
Competition only Spool option-no extra charge


from these guys
http://www.grannysspeedshop.com/

NoDOHC

The impulse loading of dumping the clutch is far greater than the torque loading of a high horsepower turbo engine. The clutch drops do not hurt the differential with stock tires, the tires just spin and the diff is fine. If you put sticky tires on the car, you can certainly kill an NA diff with 138 lb-ft of torque. (I have seen it done).

I had done many more hard launches on mine than my friend who broke his did, and was making more torque (about 155 lb-ft at the wheels) but I still had stock tires and he had hoosier slicks.

The short answer is this, the weak link will fail under heavy torque loads, whether they are transient (clutch drops) or continuous (high boost) the NA differential will not handle slicks or drag radials for any appreciable amount of time.

HKSpoweredFC3S

Heres a small write up to help you with my question.

I have already swaped a jdm turbo motor and trans in with a mazdatrix driveshaft. So now its drivable.

It has a lsd from a gtu put in as well.
here in a few months or maybe just 1 month, im going to have a standalone so i can accualy drive the car.

with my tuning on 11lbs + my mods, it going to be right at around 300 hp at the crank. I do have brand new khumo escta tires that will be going on it as well..

as soon as i get it running i can sell my eclipse for 3500...so thats 3in exhaust from turbo back...and a turbo kit, ext. (i plan to run around 15 lbs on factory port)

also, how my hp can a turbo clutch handle? i know ill need to get a better one soon, but how much do they usaly take before they start to go?

Aaron Cake

iTrader: (1)

Your question makes little sense. Crank HP is at the engine and not what the rear end sees. There is significant losses through the transmission.

My car put down 392 RWHP through a complete NA drivetrain running low boost.

HKSpoweredFC3S

well, i know that crank is more than it is at the wheels, and i needed a crank est. so i would know how much it could hold putting it down.

so you could call me safe with around 300+ whp?

how much boost do you run low?