Very Very SLOW 1/4 Mile Times... - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DuffMan · 08-31-2003, 07:53 PM

Your dad doesnt know much about modern cars. They have rev limiters, and you cant over rev them unless you downshift at high rpm.

Maybe a stock head on a small block chevy cant handle 6500rpms, but Ka's defintely can.

novaguy14 · 08-31-2003, 07:54 PM

also, My car does not have a LSD, but when i was in the burnout box, and every othertime i do burnouts, both of my tires spin. My car is not hicas or anything, and the owners before me were girls, so it was not an aftermarket part that they had installed.
Every time I drop the clutch, both tires spin. Its kinda weird because i thought my car wasnt supposed to have a posi-trac.
But im very thankful that it does...haha

novaguy14 · 08-31-2003, 07:57 PM

I dont think its that he doesnt know a whole lot, I think he just doesnt want me to blow my car that I have to drive to school starting in 2 days. Plus I have heard of some people blowing their engines while not even going to the rev limiter. This is the first import my family has ever bought other than a lexus gs300 which was quite fun.

TO logo 20: my dad is just like yours..ha he has a 56 chevy which was his first car, and has a 66 nova with 17's and stuff. He is into more street rods and stuff, he isnt much for fast cars.

SittinOnDubsWGW · 08-31-2003, 08:59 PM

Quote:

Originally posted by DuffMan

Since shifting at redline will put you at about 4000rpms, which is about peak torque you want to shift at about 57% of peak torque. So its about 75 ft lbs of torque (after drivetrain losses) on a stock KA. And a stock or maybe lightly modded engine makes arround 75 ft lbs at redline.

A lot of times people shift early because the car accelerates less at higher rpm. Yeah the car will accelerate less, but it will be even slower after the shift because you loose the mechanical advantage of the lower gear.

That makes a lot of sense after thinking about it. Although you aren't making as much power by staying in it and taking it to redline, when you shift you will be right in the peak of the powerband when you shift to 2nd so by doing that you are actually faster then if you were to just go where you are making peak power (5600).

Thanks for the info Duffman.

08-31-2003, 07:54 PM	#2
novaguy14 Join Date: Feb 2003 Location: oklahoma Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	also, My car does not have a LSD, but when i was in the burnout box, and every othertime i do burnouts, both of my tires spin. My car is not hicas or anything, and the owners before me were girls, so it was not an aftermarket part that they had installed. Every time I drop the clutch, both tires spin. Its kinda weird because i thought my car wasnt supposed to have a posi-trac. But im very thankful that it does...haha __________________ 1991 Mustang LX 13 lb. Paxton Novi 2000 supercharger, 80 mm MAF, AFM Power Pipe, 70mm TB, Stage II Cobra intake, Stage II TFS TW heads, 1.6 rockers, F303, Keith Craft 306 , DSS main support, MSD 6A ignition, MSD coil, JMS Chip, FRPP wires, Aeromotive fuel system with 42lb. injectors, BBK long tubes, 3550 w/Stage II clutch, Pro 5.0 shifter, 3.73's, Cobra R's, Nitto Drag Radials 611hp @Crank 521 rwhp, 472 rwtq FOR SALE: 1992 240sx SE Coupe 5-speed $3650 O.B.O.

08-31-2003, 07:57 PM	#3
novaguy14 Join Date: Feb 2003 Location: oklahoma Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	I dont think its that he doesnt know a whole lot, I think he just doesnt want me to blow my car that I have to drive to school starting in 2 days. Plus I have heard of some people blowing their engines while not even going to the rev limiter. This is the first import my family has ever bought other than a lexus gs300 which was quite fun. TO logo 20: my dad is just like yours..ha he has a 56 chevy which was his first car, and has a 66 nova with 17's and stuff. He is into more street rods and stuff, he isnt much for fast cars. __________________ 1991 Mustang LX 13 lb. Paxton Novi 2000 supercharger, 80 mm MAF, AFM Power Pipe, 70mm TB, Stage II Cobra intake, Stage II TFS TW heads, 1.6 rockers, F303, Keith Craft 306 , DSS main support, MSD 6A ignition, MSD coil, JMS Chip, FRPP wires, Aeromotive fuel system with 42lb. injectors, BBK long tubes, 3550 w/Stage II clutch, Pro 5.0 shifter, 3.73's, Cobra R's, Nitto Drag Radials 611hp @Crank 521 rwhp, 472 rwtq FOR SALE: 1992 240sx SE Coupe 5-speed $3650 O.B.O. Last edited by novaguy14; 08-31-2003 at 08:01 PM..

08-31-2003, 07:53 PM	#1
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	Your dad doesnt know much about modern cars. They have rev limiters, and you cant over rev them unless you downshift at high rpm. Maybe a stock head on a small block chevy cant handle 6500rpms, but Ka's defintely can.