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LS3 steam vent routing

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Old 01-11-2018, 07:04 PM
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Default LS3 steam vent routing

Anyone bend tube to run their steam vent from radiator to steam tube on engine ?? I have the Entropy radiator with the steam vent drilled. I was thinking of bending some SS line instead of rubber hose.
Old 01-11-2018, 07:33 PM
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I've did and helped a few guys run the steam vents to a surge tank. That's the way i prefer to do it.
Old 01-11-2018, 08:15 PM
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Just keep in mind -- depending on how the engine is mounted -- the engine usually moves a bit and the radiator doesn't. So a hard connection between one thing that moves and another thing that doesn't usually causes problems. I just used coolant hose and tee'd the steam fitting to the coolant hose between my reservoir and the radiator.
Old 01-11-2018, 08:20 PM
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Just to over-generalize a bit, there should be NOTHING rigid between the engine/tranny and the rest of the car. Even with solid mounts, all cables, hoses, wire conduit, etc. should flex. Even the driveshaft telescopes and has U-joints in it. lol
Old 01-11-2018, 08:31 PM
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^^Ditto exhaust system bits....
Old 01-11-2018, 08:33 PM
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Originally Posted by Michael Yount
^^Ditto exhaust system bits....
Crap... I KNEW I forgot something! lol
Old 01-11-2018, 09:03 PM
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You were exhausted.
Old 01-12-2018, 07:05 AM
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Thanks guys, the final connection to the steam tube on the engine side would be a hose, maybe 4 inches long. Just to clarify, the majority of this line would be SS. I was thinking it would make for a cleaner install.
Old 01-12-2018, 08:44 AM
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Long as you have a way to let it flex with engine movement. If SS pumps sunshine up your skirt, go for it!
Old 01-12-2018, 11:10 AM
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On my last LS swap I used -3 braided stainless for the steam line line to the radiator. I think it looks better than just rubber hose.
Old 01-12-2018, 08:51 PM
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Originally Posted by JIMB
On my last LS swap I used -3 braided stainless for the steam line line to the radiator. I think it looks better than just rubber hose.
I agree.



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