Turning up torque

[Rawze]

(02-25-2016 )mikealike Wrote:  My volvo is at 475hp and would like to turn the torque up. Is this possible and how high can I go safely? I remember seeing a post here but it's not anymore with the file name using calte@m. Thanks for Rawze and the videos.

Yes, its possible to change the torque, but it must be done properly with correct torque curves, etc.

How high can you go? -- that should be re-phrased to "How high should you go Safely?". And the answer to that involves things to consider. They are ..

@ the higher you go, and the more torque you use in any engine, the shorter its overall lifespan.

@ the older the engine the higher the risk of something failing due to the extra stress.

@ The poorer shape the engine is running, the faster problems will set in.

@ The overall structural limits need to be considered.

@ What model, factory hardware, and year the engine is.

@ What drive-line, clutch, transmission, and other components the truck has needs to be considered.

Without all the details of how old the engine is, its condition, how much it has had a history of problems, and a lot of other factors, no one can tell you this. Some suggestions towards what may be safe based on what you want to achieve is the best you can hope for.

The next thing, is are you looking for just torque? or Horsepower too? - Because increasing Torque alone will alter horsepower too, unless you alter the power curve and only put the torque in lower RPM regions. This can sometimes be bad for the engine if you get the torque to HP ratio too far out of balance.