Tapping Al Radiator Top End Tank for Coolant Temp Gauge?

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Thoughtful_One
Posts: 1083
Joined: Mon Jun 20, 2005 7:22 am
Car: 1998 Nissan 240SX SE
2000 Honda Insight

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I bought a new aluminum radiator for my SR, and I was wondering if anyone ever tapped into their radiator to check their coolant temperatures. I would tap in right next to the inlet at the top, instead of cutting my upper radiator hose.

I have the means to make my own aluminum tmep. sensor adaptor for the hose, but I think it would be cleaner on the radiator itself.

The only thing I'm worried about is if the vapor pockets in the radiator would affect the readings on the gauge.

Any help?


r3v_v3ng3
Posts: 868
Joined: Sat Feb 24, 2007 7:53 pm
Car: 91 fastback ka-t

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why don't you just tap in to an existing coolant temp gauge? i've seen a post somewhere where a guy used a Y fitting to the coolant temp area on the manifold. it will lower the risk of messing up your aluminum radiator and also not running the risk of shavings getting inside the radiator.

00selimited
Posts: 39
Joined: Mon Mar 10, 2008 10:09 pm

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Thoughtful_One wrote:I bought a new aluminum radiator for my SR, and I was wondering if anyone ever tapped into their radiator to check their coolant temperatures. I would tap in right next to the inlet at the top, instead of cutting my upper radiator hose.

I have the means to make my own aluminum tmep. sensor adaptor for the hose, but I think it would be cleaner on the radiator itself.

The only thing I'm worried about is if the vapor pockets in the radiator would affect the readings on the gauge.

Any help?
Dont do that to your radiator, instead get something like a Greddy sensor adapter like this:

00selimited
Posts: 39
Joined: Mon Mar 10, 2008 10:09 pm

Post

r3v_v3ng3 wrote:why don't you just tap in to an existing coolant temp gauge? i've seen a post somewhere where a guy used a Y fitting to the coolant temp area on the manifold. it will lower the risk of messing up your aluminum radiator and also not running the risk of shavings getting inside the radiator.
A Y-fitting doesnt work well as the sensor has to be immersed in the running water, the Y makes the sensors sit to high away from the running water to be accurate. Option#2 would be to use a S14 SR water neck as it has a spare bung for a sensor if you are running a S13 SR.


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