what i must do now???
#16
+1 on just a couple of n/a mods not making much of a difference.
BTW, what do you consider to be fast? These cars are not designed for a dragstrip if that's what you're looking for. They're heavy as hell (almost 4200 lb curb weight) and have more drivetrain power loss than any other car I've seen.
But it's the most fun-to-drive car I've ever owned.
BTW, what do you consider to be fast? These cars are not designed for a dragstrip if that's what you're looking for. They're heavy as hell (almost 4200 lb curb weight) and have more drivetrain power loss than any other car I've seen.
But it's the most fun-to-drive car I've ever owned.
#18
have more drivetrain power loss than any other car ?
RWD do have more frictional losses than FWD usally 2-2.5% [due to drive shaft and the way the differential functions] but that's about it with modern designs.
Also the higher the transmitted torque thru a gear mess the greater the percentage of loss since the mesh has to be beefier [larger in area] to avoid failure.
The more power you make the larger amount goes to heat the attached driveline components.
Frictional losses thru wheels tires to the road interface surface are always the highest percent........as you increase power the tires just lose more and more and more.
Always a good idea to pull the engine and dyno it to see if it even comes close to published rating [without accesories]. Always lots of difference between an engine as installed and connected in a vehicle vs an engine dyno.
RWD do have more frictional losses than FWD usally 2-2.5% [due to drive shaft and the way the differential functions] but that's about it with modern designs.
Also the higher the transmitted torque thru a gear mess the greater the percentage of loss since the mesh has to be beefier [larger in area] to avoid failure.
The more power you make the larger amount goes to heat the attached driveline components.
Frictional losses thru wheels tires to the road interface surface are always the highest percent........as you increase power the tires just lose more and more and more.
Always a good idea to pull the engine and dyno it to see if it even comes close to published rating [without accesories]. Always lots of difference between an engine as installed and connected in a vehicle vs an engine dyno.
#19
Originally Posted by dTor
These cars are not designed for a dragstrip if that's what you're looking for. They're heavy as hell (almost 4200 lb curb weight) and have more drivetrain power loss than any other car I've seen.
#20
#21
Originally Posted by DaveB
Huh These cars weigh in the neighborhood of 3,400-3,500lbs. You must be thinking gross vehicle weight which is the max weight the car can hold plus the weight of the car.
Still, I think 3500 lbs. is a bit porky for a sports car.
#22
Originally Posted by Q45tech
have more drivetrain power loss than any other car ?
RWD do have more frictional losses than FWD usally 2-2.5% [due to drive shaft and the way the differential functions] but that's about it with modern designs.
Also the higher the transmitted torque thru a gear mess the greater the percentage of loss since the mesh has to be beefier [larger in area] to avoid failure.
The more power you make the larger amount goes to heat the attached driveline components.
Frictional losses thru wheels tires to the road interface surface are always the highest percent........as you increase power the tires just lose more and more and more.
Always a good idea to pull the engine and dyno it to see if it even comes close to published rating [without accesories]. Always lots of difference between an engine as installed and connected in a vehicle vs an engine dyno.
RWD do have more frictional losses than FWD usally 2-2.5% [due to drive shaft and the way the differential functions] but that's about it with modern designs.
Also the higher the transmitted torque thru a gear mess the greater the percentage of loss since the mesh has to be beefier [larger in area] to avoid failure.
The more power you make the larger amount goes to heat the attached driveline components.
Frictional losses thru wheels tires to the road interface surface are always the highest percent........as you increase power the tires just lose more and more and more.
Always a good idea to pull the engine and dyno it to see if it even comes close to published rating [without accesories]. Always lots of difference between an engine as installed and connected in a vehicle vs an engine dyno.
Of course there are going to be variations of every sort, but on a very general basis, you can see that, for whatever reason(s), our drivetrains seem to require more oomph to get them spinning than others.
#24
#25
#26
https://g35driver.com/forums/showthr...highlight=dyno
https://g35driver.com/forums/showthr...highlight=dyno
https://g35driver.com/forums/showpos...34&postcount=6
https://g35driver.com/forums/showthr...highlight=dyno
Here are some that I pulled up with a search for "dyno". Please note that they are mostly within the 25% +/- 4% that I stated earlier. Again, with varying atmospheric and mechanical conditions, there is never going to be a spot-on calculation of driveline loss, but nevertheless it does seem to be greater than other RWD vehicles.
https://g35driver.com/forums/showthr...highlight=dyno
https://g35driver.com/forums/showpos...34&postcount=6
https://g35driver.com/forums/showthr...highlight=dyno
Here are some that I pulled up with a search for "dyno". Please note that they are mostly within the 25% +/- 4% that I stated earlier. Again, with varying atmospheric and mechanical conditions, there is never going to be a spot-on calculation of driveline loss, but nevertheless it does seem to be greater than other RWD vehicles.
#27