bolt on and free mods list
That's what I've been wondering. I've been considering picking up a ported intake manifold off eBay, because they're not very expensive. But, I'm trying to accomplish a bolt-on power goal, and don't want to ruin it by having a ported manifold.
Hmmm...I think if you were trying to break a bolton record or even a personal goal...I would leave the manifold stock. Otherwise you will get that guy who will say that your car is not "just boltons" and you "cheated" by adding the ported manifold. However, I think that mod could fall in either category depending on who you ask.
with a 160 thermostat just hook your fans up to switches then its not useless... i went from running at a constant 210 degrees to running just above 160. and in the winter you can wait til it warms up as hot as you want before switching on the fans. Obviously dont let it get too hot but u get the idea.
TECH Enthusiast
Joined: Sep 2008
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From: Cheshire, CT
with a 160 thermostat just hook your fans up to switches then its not useless... i went from running at a constant 210 degrees to running just above 160. and in the winter you can wait til it warms up as hot as you want before switching on the fans. Obviously dont let it get too hot but u get the idea.
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and a Ported manifold is NOT a bolt on. there r actual offical rules/regulations that came out in the 90's by GMPP
A thermostat is simply a temperature-actuated valve. When it is closed, no coolant is circulated through the motor. If no coolant is circulating, the engine retains heat much faster allowing the motor to warm up. Once the motor reaches the temperature that the thermostat opens, coolant begins to flow. The motor doesn't care at what temperature the coolant begins to flow as it will continue to warm up (you don't honestly think that the coolant will STAY at 160 degrees, do you?).
Now that the thermostat is open, the motor will continue to build heat until the coolant can exchange the heat through the radiator as fast as the motor can produce it (i.e., there is a balance between heat transmitted from the engine to the coolant and heat transmitted from the coolant to the radiator). In most every motor, this critical point is always higher than the rating of the thermostat. Coolant is cooled down by air flowing across the radiator. When the fans are stationary, only a minimal amount of air flows through the radiator (moreso at speed) allowing the heat exchange. Stock fans aren't programmed to come on until 226 degrees (235 for the high-speed fan), so that allows for a 60-degree opportunity for the coolant to cool.
Without programming, the motor will continue to heat up well beyond the thermostat opening point. With programming/fan switch, coolant temperatures can be sustained by running the fans at or close to the thermostat opening temperature, allowing the heat exchange to happen much earlier, keeping the motor cooler.
Make sense? Or was I a little too literal?
