F430 Header Blanket Creation DIY

mike32 · Jun 9, 2017

FTA said: ↑

FWIW, your temp readings are off. On my 2001 E320, the factory headers (with 184k miles on them) 'read' at between 450 and 550 degress when the car is running -- and these are with the encapsulation /heat shields that comes standard on every factory header I've ever seen in modern cars (whether its my E320 or my 360). My AP headers are usually in the 600s and sometimes get to the 700s. I imagine that if I peeled off the encapsulation of the mercedes headers and 'shot' the headers themselves, they would also be reading in the 600-700 range.

I personally think the factory heat shields have more to do with bringing the cats up to temp faster so the emissions will pass certain testing procedures. The heat shields trap the heat in the headers and helps them get up to temp more quickly. I think all this other stuff about engine bay temps and exhaust gas velocity is a very small part of it, but its just speculation on my part.
Click to expand...

You are right here about the temps being a lot higher, a steel exhaust glows cherry red at 620C, 400 F is more like very light load.
In the end the insulation effect is due to the air trapped around the pipes by the blankets

FlyingHaggisRacing · Jun 9, 2017

I can suggest a source of materials that will do the job...

High Temperature Heat and Flame molten splash weld slag splatter spark Resistant Silica Fabrics

Conversations

Alerts

F430 Header Blanket Creation DIY

mike32 F1 Veteran

FlyingHaggisRacing Formula 3

Share This Page