Header Install Help
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Absolutely no need to drop motor, but yes, time and experience will be crucial for a solid install. Some exhaust heatshields may need cutting, bending, or uninstalling.
Advise to:
Replace existing exhaust manifold gaskets with new ones.
Get headers coated with a TRUE ceramic coating, especially if you will track car to reduce heat and increase exhaust gas scavenging. Personally can recommend Swain Tech's White Lightning.
One member recommends contacting shop foreman Barrett at Sonic Motorsports in Mountain View/San Jose area.
Best of luck
Last edited by MBNRG; Jan 10, 2018 at 10:52 PM.




+1 on the ceramic coating too. I ceramic coat all aftermarket headers. Going from the stock log-style manifolds (which iirc are double-walled for noise) you will be increasing your under-hood temps.
Last edited by G_Money; Jan 11, 2018 at 12:00 AM.
I stupidly paid someone to do it and watched them it's the same as any header install just a bit more fiddly and a few more parts to remove and they needed access to the engine bay and underneath
when I remove mine to sell I will change them myself
It's easier to tighten the manifold nuts with LTH as there is more clearance between the runners as the tubes extend out from the flange and do not block the studs like how the stock log manifold does. I'm a mechanical engineer that wrenches a lot and found installing the headers on a C63 to be a major pain. Would I do it again?, probably as I like being self sufficient but thought during the install "why didn't I just pay someone to install these for me?" lol. Also, like other have said, ceramic coat the headers. I was going to go with Swain Tech but didn't feel like waiting 3 weeks and dealing with shipping my headers back and forth. I ended up going with Tech Line Coatings Turbo X Satin Black coating from a local powder coating shop, which took only a week to finish.
Last edited by quaalude; Jan 12, 2018 at 04:03 PM. Reason: Fixed post
+1 on the ceramic coating too. I ceramic coat all aftermarket headers. Going from the stock log-style manifolds (which iirc are double-walled for noise) you will be increasing your under-hood temps.
Patience with waiting for them to be coated is worth it.
take your time, it’s just a long job but rewarding.
You've got it right just be patient. Removing the header bolts is an extremely tedious process due to the cramped and awkward engine bay space. I didn't want to remove my heat shields and I managed to get my headers on while keeping them on. I also dropped the steering rack just be sure to make a couple of marks to make sure you reinstall it properly. Also - make sure you know which bolt releases the steering column, there's a fixed nut /spring assembly on the column that a forum member damaged while trying to remove the column.
Other than that, there was nothing more satisfying than firing it up for the first time and thinking "holy ****". You can feel the rumble in your seats








