Putting a set of catless headers in. Do I need to ceramic coat or wrap the headers? Will it make any difference as far as heat/longevity?
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Wrapping isn't really going to do much here. Ceramic coating will stop corrosion long term but neither are needed. Almost no one does either. There are two heat shields covering engine bay from headers. Save yourself the headache. When you do put them on, I suggest pulling that from metal coolant pipe off. It's only two bolts and you will be able to get to cylinder #1 much better. You have to drain expansion tank so this is a perfect time for a coolant flush also.This is my Unbuild Journal and why we need an oil thread
https://nam3forum.com/forums/forum/m...nbuild-journal
"Do it right once or do it twice"
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Don’t wrap.
Coating... eh. I did it (swaintech), because any reduction in under hood temps is good for the longevity of everything... and maybe some tiny power perk... but in no way would I say it’s necessary. Small upside, I don’t know of any downside, so I did it.
2005 IR/IR M3 Coupe
2012 LMB/Black 128i
2008 Black/Black M5 Sedan
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Originally posted by Obioban View PostDon’t wrap.
Coating... eh. I did it (swaintech), because any reduction in under hood temps is good for the longevity of everything... and maybe some tiny power perk... but in no way would I say it’s necessary. Small upside, I don’t know of any downside, so I did it.This is my Unbuild Journal and why we need an oil thread
https://nam3forum.com/forums/forum/m...nbuild-journal
"Do it right once or do it twice"
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Originally posted by Arith2 View Post
The time and money required to do it on top of buying the headers. Spray can stuff is basically useless. How much was it to get it professionally done?
^what I got.
2005 IR/IR M3 Coupe
2012 LMB/Black 128i
2008 Black/Black M5 Sedan
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Jet-Hot Extreme 1300 coating was $355 to coat CPI headers and Swain Tech White Lightning was $352 to coat SS V1's. All prices inclusive of shipping to VA and are as 2019/2020'05 M3 Convertible 6MT, CB/Cinnamon, CSL Airbox&Flap, PCSTuning, Beisan, Schrick 288/280, SS V1's & 2.5" System, RE Stg 1&SMF, KW V2, CB PS, Apex EC-7R
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The Jet-Hot was more effective as thermal barrier than competitors or outsiders would have you believe. Of course, Swain Tech is also effective.'05 M3 Convertible 6MT, CB/Cinnamon, CSL Airbox&Flap, PCSTuning, Beisan, Schrick 288/280, SS V1's & 2.5" System, RE Stg 1&SMF, KW V2, CB PS, Apex EC-7R
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Originally posted by jbfrancis3 View PostThe Jet-Hot was more effective as thermal barrier than competitors or outsiders would have you believe. Of course, Swain Tech is also effective.Last edited by digger; 07-03-2020, 02:44 PM.
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$350?! NOT worth it in my opinion. These things are already super corrosion resistant. You probably will only develop rust on the bolts and brackets anyways. Soak the bolts in some lemon juice concentration every few years if it matters. Or go get some Rustoleum header paint. Couple spray paint for corrosion and then wrap to really insulate. Get the best insulation along with some corrosion resistance for much much less money.This is my Unbuild Journal and why we need an oil thread
https://nam3forum.com/forums/forum/m...nbuild-journal
"Do it right once or do it twice"
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Originally posted by Arith2 View Post$350?! NOT worth it in my opinion. These things are already super corrosion resistant. You probably will only develop rust on the bolts and brackets anyways. Soak the bolts in some lemon juice concentration every few years if it matters. Or go get some Rustoleum header paint. Couple spray paint for corrosion and then wrap to really insulate. Get the best insulation along with some corrosion resistance for much much less money.
For $350 I get additional corrosion protection on the headers and greater longevity for all my under hood (plastic) components, without any tradeoff in exchange. For the price of a tire, that seems worth it to me. Any power increase that exists is just a perk.
2005 IR/IR M3 Coupe
2012 LMB/Black 128i
2008 Black/Black M5 Sedan
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Originally posted by Obioban View Post
As a long term owner, header wrap was a non starter for me. Over time it does cause corrosion-- not just with the hardware, but with the headers themselves. In 10/20/30 years, I don't want to have to be replacing my headers because I wrapped them. Similarly, over time header wrap loosens (as the headers expand/shrink/expand/shrink with heat), so you have to redo it-- not an issue if you only have the car for a couple of years and move one, but not something I want to be doing routinely.
For $350 I get additional corrosion protection on the headers and greater longevity for all my under hood (plastic) components, without any tradeoff in exchange. For the price of a tire, that seems worth it to me. Any power increase that exists is just a perk.
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