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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-23-2012, 07:11 PM   #1
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Default Preventing the hood paint from cooking away

So I'm mostly finished with my turbo build, but with how high the turbo sits (the compressor housing sits less than an inch from the underside of the hood) I'm worried about cooking the paint on the hood. What temperature will the hood paint degrade at? And is a heatshield/blanket all I need to prevent it from cooking or will i have to line the hood? Right now I'm leaning towards just a turbo blanket since I'm not very handy with fabrication, so I'm not sure about making a heatshield myself.
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Old 09-23-2012, 07:29 PM   #2
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Just use sheet metal from the valve cover over to where the airbox used to be.
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Old 09-23-2012, 08:40 PM   #3
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They sell stick on heat barrier that I've used before under the hood. Works great.
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Old 09-23-2012, 09:50 PM   #4
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what manifold/turbo?
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Old 09-23-2012, 10:32 PM   #5
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Quote:
Originally Posted by Braineack View Post
what manifold/turbo?
1.6L HKS cast iron top mount manifold with a GT2560r. It's so close to the hood that that top bracket on the compressor housing won't clear the hood. I need to cut that down, haha.

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Old 09-24-2012, 12:09 AM   #6
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Nice downpipe

DEI tunnel-mat.
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Old 09-24-2012, 12:12 AM   #7
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I loved watching steam come off the hood in the rain back when I had the greddy kit. The HKS and Greddy manifolds both put the turbo extremely close to the hood. I never had problems with my paint and never ran any insulation to protect it either.
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Old 09-24-2012, 10:22 AM   #8
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The first time in rain with a turbo is a fun experience..I like the part where you panic from all the "smoke" and the relief when you realize it's just vapor. Good times. In fact, I remember when y8s called me once when driving his miata in the rain asking about "smoke" it must never rain in CA.
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Old 09-24-2012, 10:28 AM   #9
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That's not true.

It rains a whole 2 days out of the year
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Old 09-24-2012, 10:35 AM   #10
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he must not have driven it those days...maybe it was the weekend and he slept in.
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Old 09-24-2012, 11:41 AM   #11
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Quote:
Originally Posted by hustler View Post
Nice downpipe

DEI tunnel-mat.
Haha it's the ugliest downpipe ever...Pinch-bent, ugly welds, and a non-stock flange to exhaust. But it's enough to get me started. I see an ArTech DP in my future though


Quote:
Originally Posted by Bryce View Post
I loved watching steam come off the hood in the rain back when I had the greddy kit. The HKS and Greddy manifolds both put the turbo extremely close to the hood. I never had problems with my paint and never ran any insulation to protect it either.
It must help that it's aluminum so it doesn't localize the heating and wind wicks away the heat very quickly. It would probably be a bigger problem with a steel hood.

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Old 09-27-2012, 12:33 AM   #12
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same problem with my car, i propped the hood up but later on i cut into it so the hood would clear without being JDM propped
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