anyone know the diameter of a stock LD9 crank pulley?
I know a 10% overdrive pulley is 6.9" does that mean that a stock would be 10% smaller? so -0.69" which would put it about 6.2? this sound right?
anyone got the actual measurement?
well yeah, if its 10% overdriven then you take away the 10% and that gives you the stock size.
Check with MD LD9 I know he knows for sure.
FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!
I plan on sending my RaceTech crank pulley to MD-LD9 so he can give me an exact measurement. It is supposed to be 10% overdriven, and I am pretty sure it is. I see 6 psi to 4500 and 10 psi @ 7k
Jason
99 Z24 Supercharged
157hp/171tq - NA
LD9 for Life
You want to the top of the teeth, or to the middle of the teeth?
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
-MD- LD9 wrote:You want to the top of the teeth, or to the middle of the teeth?
I want however they measure pulleys.... I just need to find the ratio between 2 pulleys...
i need to know how fast an accessory is driven compared to crank speed.
i have a 2.5" supercharger pulley... and need to know how big the crank pulley is so i can calculate the drive ratio to figure out the rpm of the supercharger.
so whatever measurement they use to claim a 2.5" SC pulley.... i need that same measurement on the crank pulley.
And i guess while i got you... I understand you make crank pulleys.... do you sell oversized/overdrive crank pulleys? I see you have stock size lightweight ones.... but got anything light weight and overdriven?
I think your almost at the end of what that m45 can do
Edited 1 time(s). Last edited Friday, March 28, 2008 4:18 PM
all i know is this, my OE pulley fit in the race tec one, like the HO pulley fits inside the LD9 one.
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
ken soggs wrote:-MD- LD9 wrote:You want to the top of the teeth, or to the middle of the teeth?
I want however they measure pulleys.... I just need to find the ratio between 2 pulleys...
i need to know how fast an accessory is driven compared to crank speed.
i have a 2.5" supercharger pulley... and need to know how big the crank pulley is so i can calculate the drive ratio to figure out the rpm of the supercharger.
so whatever measurement they use to claim a 2.5" SC pulley.... i need that same measurement on the crank pulley.
And i guess while i got you... I understand you make crank pulleys.... do you sell oversized/overdrive crank pulleys? I see you have stock size lightweight ones.... but got anything light weight and overdriven?
I guess they measure to the middle of the pulley grooves. I'll post later on that dimension.
I do not sell anything but stock diameter at this time.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Sorry been stuck at work. I'll PM you your dimension.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
6.406" to the top of the pulley grooves.
6.284" to the middle of the pulley grooves.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
