What paint have you guys used for spraying the alloy bits? Looking to paint the

Inlet & throttle body - Thermostat housing - Engine mount arms etc, I’m looking for something as close as a natural aluminium colour as possible.

I used Halfords high temp paint for the alternator because of it’s close proximity to the turbo but as you know the high temp stuff isn’t that good a finish even when heat cured.

 

Aluma blast mate ..top stuff.

 

How does it stand up to the heat Mat?
I’m not even sure what the surface temp of parts like the thermostat housing etc get to, have used rust-oleum hard hat in the past but it’s heat range is only up to 100°

 

I've used it in past on cosworth inlet ..alternator and gearbox and rear diff mate and it's really good ..im using it now on my s2 built also as I was happy with it before .

 

That looks nice mate
I just looked it up on YouTube and they recommend an etch primer and there 2k Matt lacquer did you go down this route? If not how does it hold up in the long term as it will end up quite expensive doing it that way.

 

No mate I etch prime with Halfords etch primer and the aluma blast ..thats all that's needed mate ..and all mine as lasted the lenth of time ..hence thats why I'm happy to keep on using it on the builds.

 

Cheers pal thanks for your advice, I just have one more question and then I will stop pestering you, Is the etch primer from Halfords heat resistant? I have used Upol #8 in the past which is great stuff but never used it on hot areas.

 

Ask away mate anytime ..im not sure ill take a pic of the can tomorrow ..how much heat are you wanting to put it through ?

 

I’m not sure if I’m honest! I just want to Err on the side of caution as I don’t know what surface temp of things like the inlet and other alloy parts get to that are in contact with the engine block & head,
I guesstimate around 130° but probably way off.

 

I've used it on ..alternators , thermostat housings ..gearboxes and inlets and never had any with heat damage if that helps mate .

 

thats good enough for me then that’s all I need to hear, will get a couple of cans ordered up.

Cheers again mate for your input, much appreciated.