Why not nitrous at part-throttle?

[jamyers]

So why not set up a nitrous system to start spraying at less than wot?

I know - the obvious answer is because you want all the power you can get.

But since nitrous has such a terrific cooling effect, couldn't you use that to your benefit at other times, like cooling the intake charge to eliminate detonation on hot days when towing, etc.?

Just wondering...

 

[TCIC 300ci superbeast]

that sound like a good idea to me.
besides the cost of NOS.....doesnt water injection sort of do that same thing?...not as well but less cost.

 

[wallaka]

that sound like a good idea to me.
besides the cost of NOS.....doesnt water injection sort of do that same thing?...not as well but less cost.

Indeed. Not a bad idea. WI increases detonation resistance very well.

 

[TCIC 300ci superbeast]

i didnt know that WI did that... thats cool i may have to try that then..

 

[rbohm]

8) water injection would be far better since using nitrous would be quite expensive. you have the additional fuel, as well as the nitrous itself. a ten pound bottle of nitrous doesnt last very long.

 

[FalconSedanDelivery]

This is from someone who has used N20 since 1979, the reason behind a full throttle only use is because of cylinder pressure spikes and connecting rod piston loading ,when at full throttle and to be more accurate ,with a minimum of 2500-3000 rpms and the engine at full throttle it will tolerate the extra cylinder pressure, when at a lower rpm and partial throttle you have a recipe for intake backfires and piston a rod breaking due to loss of inertial , the hit of N20 can push back on the assembly due to the cylinder pressure spike on initial hit if the rpms are too low,So having the gine at a high enough RPM and the N20 having a unrestriced path ( as with the choking effect on airflow at less than full throttle )is the best way

 

[XPC66]

Surely if you are on part throttle and the engine is suffering det, the base fueling and timing need attention? How would you accurately regulate the oxide for variable part throttle ?