Thread: engine mods??
View Single Post
Old 03-02-2015, 09:20 PM   #50 (permalink)
D.O.G.
Wanting more for less
 
D.O.G.'s Avatar
 
Join Date: Jan 2011
Location: New South Wales, Australia
Posts: 313

Metric - '94 Honda Magna 250
Motorcycle
90 day: 69.83 mpg (US)

RedCelica - '94 Toyota Celica ZR
90 day: 35.97 mpg (US)

i30 - '12 Hyundai i30 Elite
90 day: 39.84 mpg (US)

i30-22 - '12 Hyundai i30 Elite
90 day: 39.22 mpg (US)
Thanks: 23
Thanked 73 Times in 45 Posts
Quote:
Originally Posted by renault_megane_dci View Post
I came to the conclusion a N/A engine basically puts out torque based on its capacity.
Namely 25Nm for a 250.

Improving on that is borderline impossible even when you're Honda.

What you can change is :
- coming closer to this target when working on an older engine
- changing the Rpm at which peak torque occurs with influence on power right away.

At the end of the day it's always a compromise on how much you are willing to spend and what you expect from it
You're right.
Honda didn't get more torque from it, actually it was slightly less, but the peak was a bit lower in the rev range.
23.5 Nm @ 8500 rpm vs 23 Nm @ 7500 rpm.

If I could only change one thing on a small single, I'd go for a heavier flywheel, if you could find something that fits.
__________________



  Reply With Quote