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RX-7 3rd Gen Specific (1993-2002) RX-7 1993-2002 Discussion including performance modifications and Technical Support Sections.

 
 
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Old 01-22-2010, 12:48 PM   #4
rx4ur7
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I do not think that is true. We ran three cars in the Firehawk and Toyo IMSA series and never lost a motor to fuel starvation related detonation. These cars were run at speed, WOT, until they started to stumble, (BTW That was more than likely the jerking you had) they would then come in for fuel. Taking on nearly a full tank. These were 6 to 24 hr races.

I do not recommend it but I do not think that is the issue. My experience is that it has been more related to add-ons, control system setting, overboosting or the steering wheel control nut.

As stated I still do not recommend that you run them dry or low. I recommend keeping the tank full. For one, you maintain the handle of the car. Two, low fuel levels will build up more pressure in the tank from expanding gases putting more stress on the evap system and in extreme cases causing the tank to expand and break the baffles loose interally. (has happened I have replaced them)

Another thing is that low fuel has tendancy to build water condensation in the tank. Very common in hot climates with extreme temperature changes. Humid climates even more so.

That being said, maybe some of the fuel starvation detonation theory could be related not only the 4 I mentioned above but add to that pumping water into the compustion chamber instead of fuel?

In conslusion,
Keep it topped off with good fuel
Keep the filter clean
Use Redline SI-1 treatment once a year
If using aftermarket control systems, make sure you have good maps.

Last edited by rx4ur7; 01-22-2010 at 12:54 PM.
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