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> Thinking about painting my intakes, any reason not to do it..
JOE M
post Aug 2 2009, 01:49 PM
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I am almost done putting my engine back together.I had it out so I decided to repaint my tins and fan housing. It looked like crap so I said what the heck. I kind of like the way the engine looks but the intakes for the carbs look horrible in my oppinion. They are cast and have an unfished look. Is there any reason why I would not want to paint them. I am thinking about flat black. In my oppinion it would be a cool conbtrast to the blue engine tin.Le t me know what you think!!!


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Rand
post Aug 2 2009, 09:29 PM
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This is a context sensitive issue. Yes, without question, black absorbs more heat.

My question is, when intake air is rushing through there at the velocity it does, how much is it really going to get heated up in the time it takes to pass through those few inches? Just from the difference in temp created by the coating? I suppose it is possible under some extreme situations to measure a difference in performance, but you aren't going to notice it on this motor in a 914.

Cheap paint is just going to look worse in short order. Some powdercoats will hold up. Anodizing is interesting. Smooth and polish? I would just clean them up and leave them be. That looks pretty good. Goes with the carbs.
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SirAndy
post Aug 2 2009, 10:49 PM
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QUOTE(Rand @ Aug 2 2009, 07:29 PM) *

My question is, when intake air is rushing through there at the velocity it does, how much is it really going to get heated up in the time it takes to pass through those few inches? Just from the difference in temp created by the coating? I suppose it is possible under some extreme situations to measure a difference in performance, but you aren't going to notice it on this motor in a 914.

I'm more concerned about heat soak at idle or low rpm.

At high rpm, the venturies in the carb make the carbs and runners cold to the touch, but at idle there's just not enough velocity to keep things cool.
That's when you get heat soak.

(IMG:style_emoticons/default/shades.gif) Andy
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Posts in this topic
JOE M   Thinking about painting my intakes   Aug 2 2009, 01:49 PM
SirAndy   I am thinking about flat black. Anything but flat...   Aug 2 2009, 02:37 PM
JOE M   ahhhh, Thats too bad because the flat black would ...   Aug 2 2009, 02:40 PM
r_towle   Joe, you can paint them.... Use high temp paint, ...   Aug 2 2009, 02:51 PM
JOE M   Joe, you can paint them.... Use high temp paint,...   Aug 2 2009, 02:58 PM
r_towle   Joe, you can paint them.... Use high temp paint...   Aug 2 2009, 03:08 PM
jsayre914   i once used the high temp spraypaint from flaps, l...   Aug 2 2009, 02:59 PM
roadster fan   found this on a quick google search, hope it helps...   Aug 2 2009, 03:18 PM
orange914   found this on a quick google search, hope it help...   Aug 2 2009, 08:28 PM
Gint   Bead blasted aluminum powder coated clear looks pr...   Aug 2 2009, 05:37 PM
Mark Henry   If it's rattle can it will be gone if it ever ...   Aug 2 2009, 06:07 PM
Cap'n Krusty   Porsche used a black coating of some kind on the i...   Aug 2 2009, 06:17 PM
JOE M   Porsche use a black coating of some kind on the i...   Aug 2 2009, 07:13 PM
Mikey914   I would probably have them anodized. They have sta...   Aug 2 2009, 09:14 PM
Rand   This is a context sensitive issue. Yes, without qu...   Aug 2 2009, 09:29 PM
ghuff   This is a context sensitive issue. Yes, without q...   Aug 2 2009, 10:45 PM
SirAndy   My question is, when intake air is rushing throug...   Aug 2 2009, 10:49 PM
orange914   anywhere you gain 1 or 2 ponys on an 80 h.p. motor...   Aug 2 2009, 10:51 PM
Rand   anywhere you gain 1 or 2 ponys on an 80 h.p. moto...   Aug 2 2009, 11:52 PM
JOE M   At this point I`m going for cool looking not r...   Aug 3 2009, 05:43 AM
Rand   Joe, their concern is that you might lose performa...   Aug 3 2009, 10:39 AM
SirAndy   Joe, their concern is that you might lose perform...   Aug 3 2009, 11:11 AM
6freak   I am almost done putting my engine back together....   Aug 3 2009, 03:34 PM
markb   I am almost done putting my engine back together...   Aug 3 2009, 04:00 PM
jhadler   Get 'em ceramic coated in the chrome finish. B...   Aug 3 2009, 05:08 PM
JOE M   O.K I think I will leave them for now.Thanks for a...   Aug 3 2009, 06:40 PM
r_towle   so....is it done? Wanna drive to Wesport CT on sun...   Aug 4 2009, 11:25 PM
JOE M   so....is it done? Wanna drive to Wesport CT on su...   Aug 5 2009, 04:57 AM


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