05-28-2012, 10:06 AM
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#1 (permalink)
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master modder
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what is the best intake temp? hot/cold?
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05-28-2012, 11:00 AM
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#2 (permalink)
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I'm shooting for 140 F.
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05-28-2012, 12:17 PM
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#3 (permalink)
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I've seen 180ºF specified, but that seems awfully HOT ! ! !
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05-28-2012, 12:17 PM
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#4 (permalink)
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EcoModding Lurker
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Quote:
Originally Posted by t vago
I'm shooting for 140 F.
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Why not 120 or 160? |
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05-28-2012, 09:17 PM
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#5 (permalink)
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Quote:
Originally Posted by tortoise
Why not 120 or 160?
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Because?
Right now, I can reach 120 if it's about 65 F or so outside. The past few days, outside temp's been around 90 F during the day, so I have hit 140 fairly easily.
However, my engine has no knock sensor, and I am somewhat afraid to push my engine to the point where pre-ignition could take hold. Besides, that's about at the upper temperature where they test these production models before the models get released for sale to the general public. So... Not much more than 140 F.
Last edited by t vago; 05-28-2012 at 09:23 PM..
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05-29-2012, 07:53 AM
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#6 (permalink)
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The best intake temperature will vary depending on engine design mainly and alternatly many many other conditions (load probably being one of the biggest ones).
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The Following User Says Thank You to Daox For This Useful Post:
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05-29-2012, 08:37 AM
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#7 (permalink)
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GM and the others were shooting for a near-constant 115F in the early seventies with those crude emission control devices. A constant temp meant other parameters were more easily tuned. And WOT was unaffected, overall, as a cold air intake could feed the carburetor secondaries (which were not part of emissions tuning).
My last carb'd car (big block Chrysler) used this method, but isolation for the carb mount was used to try to avoid heat soak of the unit itself.
Hot oil and hot coolant seems do-able . . hot intake air seems a little more difficult to get just right.
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05-29-2012, 09:20 AM
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#8 (permalink)
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master modder
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Quote:
Originally Posted by Daox
The best intake temperature will vary depending on engine design mainly and alternatly many many other conditions (load probably being one of the biggest ones).
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that makes sense
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05-30-2012, 04:20 AM
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#9 (permalink)
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EcoModding Apprentice
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my engine pings somewhere past 70c(158f) intake temp. at idle
Last edited by baldlobo; 05-30-2012 at 04:27 AM..
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05-30-2012, 05:39 AM
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#10 (permalink)
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I have seen up to 180'F on my camaros under hood intake and air cleaner air back when I tested it in the summer of 2010. 160'F was pretty normal.
On cool mornings the air temp could swing from 60 to almost 160 so I decided the air from the out side was a lot more consistant.
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