Painting cast alloy inlet manifolds

Technical info not specifically 1st gen RX7 related.
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ian65
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Painting cast alloy inlet manifolds

Post by ian65 » Sun Jan 01, 2017 7:15 pm

I want to paint the inlet manifolds on my engine. I can't be bothered to polish them and if I clean them back to clean alloy they will just oxidise again so I reckon painting is the way to go...

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I want something pretty durable and tough.... thinking of something like this...

http://www.frost.co.uk/automotive-paint ... -15oz.html


any thoughts?
1986 Series 3 13B Turbo II
http://rx7fb.com/viewtopic.php?f=2&t=2400
1992 Peugeot 205 1.9 GTI
1975 Honda SL125 Street Scrambler

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DKWW2000
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Location: English Riviera - South Devon

Re: Painting cast alloy inlet manifolds

Post by DKWW2000 » Sun Jan 01, 2017 7:21 pm

Does it suggest any sort of acid etch primer first?
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

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DKWW2000
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Location: English Riviera - South Devon

Re: Painting cast alloy inlet manifolds

Post by DKWW2000 » Sun Jan 01, 2017 7:39 pm

It seems to be OK as you won't exceed those temps, so should be fine. You will have a lot of prep to do.
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

666widebodiedride
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Joined: Mon Aug 24, 2015 3:48 pm
Location: Birmingham west midlands

Re: Painting cast alloy inlet manifolds

Post by 666widebodiedride » Sun Jan 01, 2017 7:48 pm

Hi Ian POR15 always good stuff to use should do the trick, while i'm on the subject of POR15 which i like everybody else on the forum favours as the no1 choice in rust prevention i was looking at a R33 gtst on ebay that a chap had restored and he is using bulk container marine paint has all the same properties as POR15 apparently but comes in many colours and is a hell of a lot cheaper and their is a company in wolverhampton that make it i am going to go over in the new year to check this out as i like everbody else could go through litre of the stuff in my resto work on all cars ive restored and yet have to will put up a posting if its any good.

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ian65
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Re: Painting cast alloy inlet manifolds

Post by ian65 » Sun Jan 01, 2017 8:06 pm

Hi Martin,
I'd be interested to know how you get on with that.... Wolves isn't far from me... POR15 is good stuff but the cost is very high, especially when the bleeding stuff goes off the second you open the tin.
1986 Series 3 13B Turbo II
http://rx7fb.com/viewtopic.php?f=2&t=2400
1992 Peugeot 205 1.9 GTI
1975 Honda SL125 Street Scrambler

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ian65
Posts: 5653
Joined: Wed Mar 30, 2011 12:11 am

Re: Painting cast alloy inlet manifolds

Post by ian65 » Sun Jan 01, 2017 8:17 pm

DKWW2000 wrote:It seems to be OK as you won't exceed those temps, so should be fine. You will have a lot of prep to do.
I'll use trade alloy wheel cleaner..... an acid solution to clean the manifolds back Pete.... this will get rid of the crud and etch the surface for paint at the same time.... the dirt and oxidisation just drops of using this stuff.
They were like this yesterday...

Image

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and after 20 minutes they looked like they do in the pictures in my previous post. I could just clean them back with wheel cleaner and top coat them with lacquer but I don't know how that would stand up.
Whatever I end up coating them with I'll have to clean all the crud off them first.
1986 Series 3 13B Turbo II
http://rx7fb.com/viewtopic.php?f=2&t=2400
1992 Peugeot 205 1.9 GTI
1975 Honda SL125 Street Scrambler

666widebodiedride
Posts: 32
Joined: Mon Aug 24, 2015 3:48 pm
Location: Birmingham west midlands

Re: Painting cast alloy inlet manifolds

Post by 666widebodiedride » Sun Jan 01, 2017 8:59 pm

Hi Ian have just found this company on ebay dont know how to put up ebay link so item no is 141706912120 £19.79 a litre this is chassis enamel, POR15 always remined me of enamel paint i used to paint my airfix models with as a kid!!! they do free P&P so i'm going to get some and try it out will let you know what i think of it!! Its a much cheaper than POR15

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ian65
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Re: Painting cast alloy inlet manifolds

Post by ian65 » Sun Jan 01, 2017 9:02 pm

666widebodiedride wrote:Hi Ian have just found this company on ebay dont know how to put up ebay link so item no is 141706912120 £19.79 a litre this is chassis enamel, POR15 always remined me of enamel paint i used to paint my airfix models with as a kid!!! they do free P&P so i'm going to get some and try it out will let you know what i think of it!! Its a much cheaper than POR15
Thanks.... here's the link....

http://www.ebay.co.uk/itm/CHASSIS-PAINT ... SbjqrNp5pw
1986 Series 3 13B Turbo II
http://rx7fb.com/viewtopic.php?f=2&t=2400
1992 Peugeot 205 1.9 GTI
1975 Honda SL125 Street Scrambler

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gt_james
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Joined: Sun Apr 06, 2014 4:10 pm
Location: Pershore, Worcester UK

Re: Painting cast alloy inlet manifolds

Post by gt_james » Fri Jan 06, 2017 4:56 pm

Might not be the look you're going for but I love the look of red crinkle finish VHT

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Hobbawobba
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Location: Worcester - UK

Re: Painting cast alloy inlet manifolds

Post by Hobbawobba » Fri Jan 06, 2017 5:12 pm

What about powder coating? It was fairly cheap when I took that whole lot to get done. I was really surprised aye. Could get a few bits done at the same time? I believe there is a chrome type colour if you want shiney :lol: . They do all the work also :D

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