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Author Topic: best engine paint ?  (Read 9912 times)

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hotrodjon

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best engine paint ?
« on: November 26, 2010, 20:04:18 PM »
I have painted various engines over the years with a variation of results. I am rebuilding a 12V 2.8 V6 engine at the moment and would like to know what other people reckon, in the past I have used proper engine paint, VHT paint, cellulose, two pack and also cheap b&q paint.



Offline capri v8 driver

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best engine paint ?
« Reply #1 on: November 27, 2010, 08:33:35 AM »
i tryed all kinds off paint, from rattle cans to 2 pack. the key for keeping the paint on the block is the prep work and a good etch primer.
greetz Paul.

Capri V8 Driver.

hotrodjon

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best engine paint ?
« Reply #2 on: November 27, 2010, 18:35:15 PM »
hard work, I know short cuts do not pay off in the long run.

Offline TimoXr4i

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best engine paint ?
« Reply #3 on: November 27, 2010, 20:37:31 PM »
paul, what primer is etch primer, ive searched many paint shops, but, they dont have it, they normally do house paint, do you know a dutch shop? My block is going for a clean in a de greaser  and i want to paint it afterwards and start to re build it, it needs good paint! Cheers timo

hotrodjon

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best engine paint ?
« Reply #4 on: November 27, 2010, 21:30:40 PM »
Hi Timo, this is the sort of primer that will probably suit your needs : ebay item    180514813670

Offline capri v8 driver

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best engine paint ?
« Reply #5 on: November 28, 2010, 08:08:22 AM »
you have to go to a paint shop where they sell 2k car paint. normaly they have these primers.
greetz Paul.

Capri V8 Driver.

Offline Dave

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best engine paint ?
« Reply #6 on: November 28, 2010, 10:16:54 AM »

If you don't use primer with 2 pack it chips off easily.

I use either 2 pack or enamel paint, what ever I have lying around really.

Block does not get that hot, the heads you want to use a paint for hot temps like VHT etc !
Dave

Janspeedcapri

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best engine paint ?
« Reply #7 on: December 06, 2010, 13:01:25 PM »
Was watching American Hotrod last night - they painted a block/heads with car paint and it just flaked off - you see the late Boyd just pull a big peice off with his fingers  ...the paint guy said he didn't know why it did that but I suspect he didn't degrease the surfaces properly first - when they are stripping it, you see that most of it was stuck. Before, painting mine with VHT engine enamel, I washed the the thing thoroughly with thinners and its given a nice tough finish that doesn't scratch off - its VHT (very high temperature) engine enamel so shouldn't be affected by the heat of operations either.

edit - just remembered that I used silver brake caliper paint from halfrauds on my inlet manifold. It claims to have the same key properties as engine enamel - heat and chemical resistance so should be o.k.
« Last Edit: December 06, 2010, 13:03:59 PM by Janspeedcapri »

hotrodjon

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best engine paint ?
« Reply #8 on: December 06, 2010, 15:32:11 PM »
yes I think cleaning off with thinners must be the most important stage.

Offline capri v8 driver

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best engine paint ?
« Reply #9 on: December 06, 2010, 20:39:03 PM »
and what about sanding? iron blocks rust very fast, to get the rust layer away you need to sand or use a wire wheel to get it off and quikly put some primer on the cleaned surface. after cleaning the block i use etch primer, because this primer 'eats" into the metal. after that i spray a normale primer.

dont use thinner for cleaning, thinner still lieves resedu behindt.
greetz Paul.

Capri V8 Driver.

hotrodjon

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best engine paint ?
« Reply #10 on: December 07, 2010, 01:10:16 AM »
some very good points there, I intend to use thinners to remove the worst of the excess oil and any loose old paint etc followed by using rotary wire brushes and finally some 'panel wipe' before priming.

Janspeedcapri

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best engine paint ?
« Reply #11 on: December 07, 2010, 03:22:47 AM »
Paul, I did scrub the thing dry with a clean cloth before painting so hopefuly it minimized any residue. I'm pretty sure the rough finish of the block lets the enamel key to the the surface pretty well. I rubbed a few little bits back (that i did not mean to paint and forgot to mask properly) and the enamel did not come off easily - it came off as dust not flakes or peelings so I hope I got away with it. I googled and PPG do a degreaser for this very purpose so maybe thats best in future.

Offline Mik

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best engine paint ?
« Reply #12 on: December 07, 2010, 19:22:07 PM »
MIPA do a very good combined self etching aerosol primer. I've also found that heating the paint and the block prior to application aides adhesion, saves having to thin it down and gives a more durable coat. VHT brake paint is good but I've used hammerite and enamel without any problems. If the engine's stripped, its worth getting it chemically cleaned.

hotrodjon

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best engine paint ?
« Reply #13 on: December 07, 2010, 19:43:03 PM »
If I was completely stripping the engine I would have it vapourblasted, but I am just going to overhaul the cylinder heads and remove the sump and check the state or the bearings then hopefully just rebuild with new gaskets, core plugs etc. I used to use hammerite paint quite a lot but rarely use it now due poor adhesion qualities. I am sure they have changed the formula. I will start with a good etching primer before deciding which topcoat to use.

Offline Mik

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best engine paint ?
« Reply #14 on: December 07, 2010, 20:34:02 PM »
Hammerite does stick better when heated. usually leave it in a bowl of boiled water for 10 mins. They've probably changed the formula so not to kill so many bunny rabbits. Never mind going green, what about my garden railings?????????

hotrodjon

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best engine paint ?
« Reply #15 on: December 08, 2010, 11:10:30 AM »
I don't want to paint my bunny rabbit though LOL

 

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