KrisM Posted February 28, 2021 Share Posted February 28, 2021 Hi Has anyone sprayed 2k clear aerosol or similar over the cast aluminium turbo intake pipes? I just had mine vapor blasted and have come up looking great so rather than have them powdercoat want to clear protect them before they oxidise again. Recommended brand welcome. Cheers Quote Link to comment Share on other sites More sharing options...
Noz Posted February 28, 2021 Share Posted February 28, 2021 I'd keep it maintained with a weekly polish. If clear coating peels or cracks you'll have to remove it and repolish. From a maintenance viewpoint I think polishing it probably better. You can get clear anodising though. Maybe worth a look. Quote Link to comment Share on other sites More sharing options...
rider Posted March 1, 2021 Share Posted March 1, 2021 Agree with Noz here. I've seen old clearcoat on engine metal and it yellowed, misted and started to craze. Varnish doesn't always seem to hold up well long term on a vibrating surface sat in and around hot bits. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted March 3, 2021 Share Posted March 3, 2021 Not sure if its much use, but I sprayed a lacquer over my galv dipped subframe using a clear based primer and lacquer specifically for metals, however the primer has a slight blue hint to it. I'll get you the name of the brands. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted March 3, 2021 Share Posted March 3, 2021 the brand is called rustoleum Quote Link to comment Share on other sites More sharing options...
Wishieftrottle Posted March 3, 2021 Share Posted March 3, 2021 Hi Nathan, is it compatible with high temperatures? Thanks Quote Link to comment Share on other sites More sharing options...
baldy Posted March 5, 2021 Share Posted March 5, 2021 An alloy wheel sealant would be better Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted March 11, 2021 Share Posted March 11, 2021 On 3/3/2021 at 3:45 PM, Wishieftrottle said: Hi Nathan, is it compatible with high temperatures? Thanks sorry mate didn't see the reply. I'm not sure, you'd have to check the technical manuals. Quote Link to comment Share on other sites More sharing options...
evinX Posted March 12, 2021 Share Posted March 12, 2021 (edited) My rule of thumb for painting is. If it can be dried by air it can be penetrated by air and water. Not good enough to fight the elements. 2k epoxy primers and 2k clearcoats do the job well until a stone chips them. Powdercoat id use to dress up parts inside the enginebay. Edited March 12, 2021 by evinX (see edit history) Quote Link to comment Share on other sites More sharing options...
Iky Posted March 12, 2021 Share Posted March 12, 2021 From experience most clear or light colour paints in engine bay will yellow over time. Powder coat isn't great in teh bay either unless its away from the engine/turbos. You can get ceramic powder coats that'll cope better with heat but still not sure how long they'll last before the silvers go yellow. i don't think you'll find a decent clear that doesn't but best bet would be some of the VHT branded paints. I've used a silver one on my turbo heat shield and it still seems to be silver-ish. Quote Link to comment Share on other sites More sharing options...
evinX Posted March 12, 2021 Share Posted March 12, 2021 26 minutes ago, Iky said: From experience most clear or light colour paints in engine bay will yellow over time. Powder coat isn't great in teh bay either unless its away from the engine/turbos. You can get ceramic powder coats that'll cope better with heat but still not sure how long they'll last before the silvers go yellow. i don't think you'll find a decent clear that doesn't but best bet would be some of the VHT branded paints. I've used a silver one on my turbo heat shield and it still seems to be silver-ish. Powdercoating is great for the engine parts minus exhaust manifold areas. Great for heat exhange to. Quote Link to comment Share on other sites More sharing options...
Iky Posted March 13, 2021 Share Posted March 13, 2021 19 hours ago, evinX said: Powdercoating is great for the engine parts minus exhaust manifold areas. Great for heat exhange to. Standard powdercoat wont last long. Especially on cam covers/turbo alloy pipes. Probably look good for a few months to a year before it softens/blisters/cracks/discolours. If you can find a company that does ceramic/high temp type powders, theres one in coventry that I know of. Powder Lab I think it's called. That'll last much longer. Quote Link to comment Share on other sites More sharing options...
evinX Posted March 13, 2021 Share Posted March 13, 2021 19 minutes ago, Iky said: Standard powdercoat wont last long. Especially on cam covers/turbo alloy pipes. Probably look good for a few months to a year before it softens/blisters/cracks/discolours. If you can find a company that does ceramic/high temp type powders, theres one in coventry that I know of. Powder Lab I think it's called. That'll last much longer. Ive had powdercoated valve covers for around 3 years with no issues and have friends with other powdercoated engine parts longer than i have and still look great. Quote Link to comment Share on other sites More sharing options...
Iky Posted March 13, 2021 Share Posted March 13, 2021 2 hours ago, evinX said: Ive had powdercoated valve covers for around 3 years with no issues and have friends with other powdercoated engine parts longer than i have and still look great. We'll have to agree to disagree on that Kev, all the ones I've seen have shown signs of the finish degrading in roughly a year, including my own. If you look closely it'll have lost its sheen and become brittle and blister. Might look fine from a distance. Problem with alloy it that when it gets warm it 'gasses' out and starts blistering. That's why you need to preheat it before powder coating otherwise it comes out looking crap. Our engines run hot and constant heat cycling degrades it. I'd advise anyone that wants that super fresh painted look to last for a good few years, not to powdercoat cam covers and turbo pipes but find some other alternative coating that can handle high temps. It's fine for other odd brackets etc. I'm not too sure about NA cam covers as they're a magnesium alloy, I've not had any experience of powdercoating that. Just my opinion and advice of course. Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted March 14, 2021 Share Posted March 14, 2021 I'd have to disagree with that. Ive had my valve covers, inlet manifold and some other bits in the bay powdercoated for a few years now. Much better than any paint I've used, holds up well against the heat and is much more durable against scratches and such. These days, 2k paint or powdercoat/anodize is the way to go, everything else is a bit of a waste of time. From what I've seen nothing out there will give you a super fresh painted look after a few years unless the car is barely driven. It all turns to shit eventually. For OP, I've tried a few clear coats and such on fresh blasted parts before and its ok for intake side parts, but anything close to the exhaust turns a nice yellow/brown, so bit of a waste of time there. The best results I've had is to leave the parts bare after being vapor blasted, then use ACF-50 to keep it from corroding. Only problem is that if you drive the car enough you will have to apply new layers of ACF-50 on a somewhat regular basis to keep it protected, so bit of a ballache. 1 Quote Link to comment Share on other sites More sharing options...
KrisM Posted March 23, 2021 Author Share Posted March 23, 2021 (edited) Many thanks for the replies guys. Must apologise i never had an email alert to say anyone had responded so havent been on After considering the options i think a regular wipe with brake cleaner will do so I can stick with the raw aluminium look. (Will look into the acf50 though) If they become too much work then silver or black powdercoat maybe. Next job pull the intake manifold and get it done. Cheers Edited March 23, 2021 by KrisM (see edit history) Quote Link to comment Share on other sites More sharing options...
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