Propane

old bird

Registered User
If you are going to get the cooling advantages from the propane, you need to turn that tank upside down. That tank, setting vertically provides only vapor. the heat of vaporization stays in the tank. Also, those type of valves have flow limiters that may shut the flow off when you really need it. It is easy to bypass. Take the valve out of the tank and it is easily seen. One could also add a sparge tube to the valve which would pull propane from the bottom, providing liquid, not vapor.

One does not want that fuel to vaporize until it hits the intake stream.

Where were you putting the fuel in? The nitrous? How were you controlling the volumetric flow on the propane and the nitrous. It seems to me that the air sensor is giving info to the computer that will allow it to provide suffecient gasoline for the air stream.

It follows that the nitrous and the propane are not allowed for by the computer. the proportions of nitrous and propane, then are interdependent. Just provide slightly more propane than the amount of nitrous injected demands, and all should be cool.

The cooler mixture should allow you to run more timing advance.

Propane is higher octane than gasoline. It has a higher heat of vaporization. Use it to provide fuel for the nitrous; slightly in excess. Propane, if you use the right equipment is safe and easy to use. Talk to the people at Impco. I will try to find some e- mail addresses.

Old Bird
 
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