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fan switch and thermostat
noob question, is there any point in changing fan switch and thermostat???
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no, not on a stock to mild vehicle,they work quite effectively from the factory,honda aint stupid
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cool thanks
wat exactly are they for??
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quite simply to lower the working heat range of the motor.
honda have already setup the working range of the motor,to where it is most efficient at the factory.
its not until u start heavily modifying your motor or doing extensive high rpm track work,that u will need to address this issue.
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 Originally Posted by CRXer
no, not on a stock to mild vehicle,they work quite effectively from the factory,honda aint stupid
i agree... as i have them both and it got the car running a little cooler and as others have said in other threads, it may actually be forcing the ecu into cold idle mixtures and running rich.
if anything though a low temp fan switch maybe an ok idea on its own to keep cooler temps in the radiator ready on tap, at the end of the day its the oem thermostat thats going to regulate the water temp in the engine.
Originally Posted by CRXer
quite simply to lower the working heat range of the motor.
honda have already setup the working range of the motor,to where it is most efficient at the factory.
its not until u start heavily modifying your motor or doing extensive high rpm track work,that u will need to address this issue.
are these mods together at least justifiable if say the CR was at ~12:1?
Last edited by dsp26; 09-07-2008 at 09:34 PM.
Originally Posted by Slow96GSR
If 1 person has had bad luck with a product don’t condemn it until you yourself have tested it. Now if 10 pros have tried it and it sucked then I would trust their opinion.
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im seeing figures of 20% fuel at 76degC high load,open loop in my calibration,dont know how that compares to stock,but i'd imagine pretty close
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Originally Posted by dsp26
are these mods together at least justifiable if say the CR was at ~12:1?
im n00b ron,ud have to ask someone that works on modified engines what they have been experiencing for that one.
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Originally Posted by dsp26
are these mods together at least justifiable if say the CR was at ~12:1?
compression ratio of the engine alone is not a determining factor to use a "lower temp" thermo + fan switch.
But combined with lots of other mods , and on the track for many laps at a time perhaps there is a benefit. otherwise , as said no stick with OEM parts.
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i'd imagine u'd experience some overtemp conditions from the higher combustion pressures,but how much & whether the stock system is capable of controlling it,i wouldnt have a clue
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no one here would..but from my browsing honda-tech for years i have never ever heard of a OEM honda cooling system fail or let down a worked engine.
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Originally Posted by bennjamin
no one here would..but from my browsing honda-tech for years i have never ever heard of a OEM honda cooling system fail or let down a worked engine.
As above. As long as the radiator, thermostat, fan switch all working then overheating shouldn't be a problem.
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as an addition,im also seeing figures of around 70-75degC on these cold nights,when cruising down the motorway at 80km/h for just a few minutes.
thats a stock engine with D16 cooling components,running a B18C(also stock cooling components) in a rather cramped engine compartment,there is an oil cooler but i really dont know how effective that is.
so i'd hate to go lowering my temps even further.
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