ceramic coating of a turbo manifold?

[bazil]

can i beleive the sales pitch of reduced temps? will it have any benifit? or am i just wanting it to look pretty?

anyone know anything on ceramic coating?

this is one of the companies i found online, anyone heard of them?
http://www.zircotec.com/index.php (http://www.zircotec.com/index.php)

this be the fanimould, its never been used so should be fine for the process.

http://i790.photobucket.com/albums/yy181/Bazil_2468/gsi/fb4dd2f1.jpg

[GDN16v]

Zircotec are a very good company do alot of work for F1 teams Manifolds etc. Check them out on youtube there's a couple of vids of them doing there stuff!!;):thumb:

My brother is looking to have his 4 branch manifold coated by them!!

[bazil]

i seen they have a channel, i'll have a wee look at the vids, the main issue for me was being told that these courtney manifolds can and have suffered failures due to cracking, something i dont want happening and i would also like to try and keep an OE look where possable.

[MattBrown]

How much boost you going for bazil?

With it being cast, extreme heat will eventually kill it.

[bazil]

i know matt, i looking for 200bhp, if i can avoid high boost then thats all the better but ive got a feeling i'll need to run more than 10 psi anyway,

[MattBrown]

Its gonna be seeing over 250 degrees then,

If im bored in work friday, ill work out how many heat cycles it will take to crack, and a what temps etc.

[bazil]

well i know fook all about what you just said lol, im just putting bits together till someone says '' eh that wont work son '' lol

[MattBrown]

http://www.springerlink.com/content/hcubc7rnj0rg45bk/

That looks a good read lol

http://en.wikipedia.org/wiki/Thermal_cycling

Also, people are "bumming" of "cryogenic freezing" atm, saying it doubles tooling life etc, maybe look into it?

[MattBrown]

http://pecongress.org.pk/images/upload/books/Paper677.pdf

That will explain it, although I imagine yours is cast carbon steel? Or manganeese steel?

[Paul]

Dont bother. Spend your money elsewhwre.

[MK999]

it will only help it retain more heat and crack faster anyway.

[bazil]

it will only help it retain more heat and crack faster anyway.

so the external temp may be reduced but internal will be hotter?

not what i need lol

[MK999]

so the external temp may be reduced but internal will be hotter?

not what i need lol

exactly, it can't make the heat disappear, it just contains it, same as wrapping etc, it's to keep bay and therefore intake temperatures down.

[Edd]

I can't really see how any money can be justified in doing it

I'll just put my Courtenay manifold on as it is for my 1300

[Stuart]

Its gonna be seeing over 250 degrees then,

If im bored in work friday, ill work out how many heat cycles it will take to crack, and a what temps etc.



flol, you do know exhaust gases are in the region of 950deg C, granted the manifold shouldnt get that hot but its a huge temp delta over the cast.


I'd get the inside coated (if its cheap enough) and leave the outside well vented to try and keep it evenly warm/cool.

[scott.parker]

I read some where once the use of coating/wrapping manifolds is so they retain heat as the hotter it is the quicker it expels the gas from it and into the cooler part of the system???

[GDN16v]

I read some where once the use of coating/wrapping manifolds is so they retain heat as the hotter it is the quicker it expels the gas from it and into the cooler part of the system???

:thumb:

[Bubba]

I read some where once the use of coating/wrapping manifolds is so they retain heat as the hotter it is the quicker it expels the gas from it and into the cooler part of the system???

simple heat transfer stuff lol although ive forgotten the name of it

[MARTIN KELSON]

I did get a quote year or so back from Zircotec to do my XE manifold.

Damn expensive. I couldnt justify the cost so wrapped it instead.

[MK999]

I'd get the inside coated (if its cheap enough) and leave the outside well vented to try and keep it evenly warm/cool.

Getting the inside coated sounds interesting, bet it's a fortune though lol

[GDN16v]

£230 + vat to powder coat an evo manifold! Not to bad in the grand scheme of things!!:thumb:

[moffat]

bazil pm wilson, he had his courtenay mani done

[Gareth_C]

simple heat transfer stuff lol although ive forgotten the name of it

Its called convection mate. :thumb:

[craig green]

You want to keep the heat inside the manifold, that = more energy to the turbo, likewise having the exhaust ports of the head done (ceramic coating) would be a wise move if you were taking the engine to 'that' kind of spec.

Personally though I'd be inclined to not bother at all & put the funds toward a more important aspect of the engine like management perhaps?

[bazil]

This will be in addition to management CG, it's not sensible to plough money into this kind of engine but it's the route I want to go,

Pretty much want to over spec the old 8V to see how much I can get out the old girl,

It will have low comp pistons, steel rods, omex or DTA, headwork, etc etc but heat management will need to be looked at for the sake of reliability IMO

The other option would be to have a custom stainless manifold made but that would probably cost more than the ceramic coating,

as I said before it's still a learning curve for me and I'm happy to draw from others opinions and experience.

[Stuart]

What you might (WILL) want to consider is making a brace setup to take the weight of the turbo OFF the manifold to reduce the chances of it cracking due to heat+load

[gunny]

If your going for massive spec/pushing the boundaries personally I'd say its definitely worth looking in to, though if you are thinking of really pushing it I'd look at a better manifold, not doubting the courtenay ones at all but I'm sure you see what I'm getting at

[bazil]

What you might (WILL) want to consider is making a brace setup to take the weight of the turbo OFF the manifold to reduce the chances of it cracking due to heat+load

Stuart that's a very valid point!!!!

I've seen YBT engines with that and never actually thought about it, but after lifting the fanimould and turbo it's Bloody heavy, I'll need to weigh it now to see the actually weight lol

[Mike]

Where I/we get ours done in Birmingham charge £30+vat per linear foot.

[MattBrown]

flol, you do know exhaust gases are in the region of 950deg C, granted the manifold shouldnt get that hot but its a huge temp delta over the cast.


I'd get the inside coated (if its cheap enough) and leave the outside well vented to try and keep it evenly warm/cool.

Doesnt steel go plyable, cherry red even at just under 700?

So if the manifold got anywhere near 900, it would simply flop like a donkeys knoblol

[MK999]

Doesnt steel go plyable, cherry red even at just under 700?

So if the manifold got anywhere near 900, it would simply flop like a donkeys knoblol

About that yes...
http://image.motortrend.com/f/roadtests/coupes/8303786+w200/112_0605_pvtg_21z+porsche_vtg_turbocharger+white_h ot_housing.jpg

There's a white one for you, how hot you reckon that is? lol