cylinder head

[lee]

hello all, i just wanted a bit of advice, i'm sending all of the brackets, sub frame and engine block for powder coating and was just wondering if it's ok to send the cylinder head as i've not seen anyone do this
thanks lee

[Mr Raider]

Cylinder heads are not normally powder coated mate, normally cleaned up so they are silver, - be good contrast to freshly painted block, brackets etc... ;)

[lee]

i just really feel like having it coated in red as i'm going to have the block coated black, i just wanted to make sure it wouldn't be damaged if i did this

[chris]

Por15 engine enamel paint it yourself comes out well

[lee]

i did think about painting it myself but it's the time it takes to degrease all the parts,
although just out of interest what sort of finish do you get from the por-15 and where can you buy

[Tony Walker]

theres quite a few areas on the head you wouldnt want paint on. valve spring seats, oil gallery combustion chambers and the face of the head that bolts to the block, all the threads for the waterpump end plate and the faces the rocker shaft sits on probably wouldnt want to coat the surface the rocker cover seals to either..... all in all you'll regret doing it when it screws your engine. Would look ace tho :D

[chris]

Yea theres loads of people on here that have used it i have my project thread it is called my first renault 5 gt turbo restoration take a look mines black block silver head

[lee]

i trust the guys to mask and stop the paint getting where it shouldn't as they paint all the bits where i work,

[Big Steve - Raider]

Isn't there something to be said for if the Cylinder head is painted then it will not be able to cool itself as it was designed to as the Aluminium is a better heat exchanger on it's own rather than when it's covered in paint?? :scratch:

[lee]

this is what i really wanted to know,

[chris]

Yes true but i am unsure how much diffrence it really makes tho probley not enough to worry about

[Mr Raider]

Isn't there something to be said for if the Cylinder head is painted then it will not be able to cool itself as it was designed to as the Aluminium is a better heat exchanger on it's own rather than when it's covered in paint?? :scratch:

hmm cylinder head is silver, heatshields have a silver foil like coating could be onto something there Steve :coffee:

[gtmatt]

Just shot blast it looks tip top then

[w35ty]

All i done is cleaned mine up with thinners and tooth brush jobby.. Then some aluminim high temp enamel spray from halfords.. Looks like new :D

[Alex]

I wouldn't go near the head or block with a shot/bead blaster - recipe for disaster for sure!

Personally I'd clean them up good and proper and give the block a few coats of something like smmoth Hammerite. Leave the head alone or perhaps a light coat of silver on the front only.

[lee]

so maybe i should just leave the cylinder head alone unless i can get hold of a good cheap head incase

[w35ty]

As alex said.. Just paint the front and i did the blanking plate side aswell il get a pic tomorrow does the job looks like new

[rs250nut]

Motorbike engines be it air or watercooled a lot of the time are painted top to bottom rev to the moon make silly hp per cc, just my 2 pence.

[James5]

This thread reminds me of the bloke on Bluntys renault 5 gtt facebook page whom has painted his cylinder head inside and out :rob: . Just do as other's have said Clean it up nicely and then just leave alone wouldn't bother with paint other than doing the block.


Shame the guy on facebook has some quiet good idea's for part's to make he recently made some custom rockers the ones that Big Steve has in his 5 and is looking into making better pushrod's aswell.

[Mr Raider]

Ive seen that too, they look good however really wouldnt paint inside the cylinder head as if that paint flakes it could cause problems/blockages :scared:

[chris]

No definatly not paint inside cylinder head lol

[Sol]

Can you anodise your head though if it is just aluminium? Would that not be a better idea than painting it?

[lee]

i like that idea if it's possible??