On my son's Genesis. It's composite. The dealership and a couple of shops will only replace the entire radiator - very expensive. Found a couple of videos showing drilling it out and replacing with a brass threaded hose barb. I can do that myself. Any reason not to do that?

Hose barb with a NPT thread? Should work as long as you have enough meat to get a number of female threads when you tap it.

Definitely worth a shot. I mean, what's the downside to trying?

Year/model/engine? New radiator on Rock should be $150ish.

GrapevineAg said:

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Definitely worth a shot. I mean, what's the downside to trying?

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There is zero downside. Z E R O.

You need a radiator. Try the self fix first. No work? Get the Rock radiator... put it in yourself... save $300.

Yep, exactly what I was implying.

GrapevineAg said:

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Definitely worth a shot. I mean, what's the downside to trying?

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Nipple blows off in traffic, young driver doesn't notice, car overheats, engine blows?

I was lazy with a cooling system repair ~10 years ago and ended up with a $1500 tow bill when the water pump blew. I had a brand new one already sitting at the house I'd decided not to install after replacing everything else. I've been a bit more risk averse with cooling systems after that.

txyaloo said:

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GrapevineAg said:

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Definitely worth a shot. I mean, what's the downside to trying?

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Nipple blows off in traffic, young driver doesn't notice, car overheats, engine blows?

I was lazy with a cooling system repair ~10 years ago and ended up with a $1500 tow bill when the water pump blew. I had a brand new one already sitting at the house I'd decided not to install after replacing everything else. I've been a bit more risk averse with cooling systems after that.

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This is the 1/8" nipple in the neck near the radiator cap. That hose goes to the coolant return reservoir. So only a modest amount of coolant movement and under low pressure. Seems like minimal risk of overheating as long as he's attentive to the temp gage, no?