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Old 10-01-2015, 02:35 PM   #1
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Cat delete pipes heat shields?

I have cat (secondary) delete pipes on my 2.7.
Just wondering if anyone has used or made heat shields to protect the drive shaft boots and keep the trunk cooler. Not sure if there is as much heat coming of the pipes as there was with the cats (which had heat shields), maybe shields not necessary?
I must say these pipes make the muffler (standard but drilled) sound really good!
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Old 10-01-2015, 03:09 PM   #2
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Cats create majority of the heat but to be as cool as possible have exhaust components ceramic coated.
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Old 10-01-2015, 08:55 PM   #3
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I'll go along with BY - if you want to reduce the heat, have the pipes ceramic coated - just make sure they are coated inside & outside to get the full benefit.

I took my pipes off after my boots suffered heat stress after 20,000 km and required replacing.

They are cleaned and lying in the garage ready for coating when I get round to it.....
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Old 10-02-2015, 12:51 AM   #4
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There's that pipe wrap motorcycles use. Seems to work.
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Old 10-02-2015, 01:32 PM   #5
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I am thinking of this:
DEI Titanium Pipe Shield with LR Technology 010454 - Free Shipping on Orders Over $99 at Summit Racing
I like the fact it is held off the pipe so air can circulate.
I was thinking of making my own alum. shield but I guess sometimes they can vibrate or cause resonance.
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Old 10-20-2015, 08:41 AM   #6
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Found a spray-on ceramic product called Lizardskin, made by Mascoat. Pricey at $90/gal. and $90for a spray kit, but claims to adhere to most anything. No respirator required, but a mask is recommended. Anyone seen or heard of this? On the waiting list for the next batch of TS cat delete pipes, and comments on cat delete pipes and melting rubber boots has generated some concern.
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Old 10-20-2015, 08:57 AM   #7
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Pipe wrap is always the coolest looking.

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Old 10-20-2015, 02:32 PM   #8
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A heat-related issue may be that heat rising from the headers damages the coils ? I fabricated my own heat shields for this reason. It was easy to do with the engine out but may have been tedious otherwise. I had seen heat shields on some versions of the M96 in 996 cars. There are very convenient threaded holes to receive bolts to attach heatshields. Perhaps they are standard on some other P-cars?
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Old 10-20-2015, 03:55 PM   #9
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Heat will also damage the rear motor (tranny) mounts.
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Old 10-20-2015, 04:31 PM   #10
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Those heat shields from Summit or ones like that work very well. I installed a remote oil filter on my 912 and needed on like this to shield the new oil adaptor and hoses. It worked really well and is super easy to install.
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