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Author Topic: Piston coating & manifold coating  (Read 4709 times)

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Offline TimoXr4i

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Piston coating & manifold coating
« on: May 03, 2010, 16:28:51 PM »
anyone done it before?

I want my pistons to be "bomb" proof, and I heard the coating really helps, and also helps a bit keeping the engine temperatures a bit lower, but does it really help?

and with the manifold coating the same, does it help, or should I just heat wrap it becouse that is better?

cheers!

Timo



Offline Mikey J

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Piston coating & manifold coating
« Reply #1 on: May 03, 2010, 20:12:58 PM »
My pistons are usually ordered with coatings on them. I think it helps but it won't make the piston bomb proof. They're aluminium after all so detonation will break them if bad enough.  I don't like heat wrap on turbo's or tubuler headers as it makes them rust very badly.

gengis

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Piston coating & manifold coating
« Reply #2 on: May 03, 2010, 20:52:56 PM »
www.zircotec.com are the people you want to talk to and yes it does work.

Offline capri v8 driver

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Piston coating & manifold coating
« Reply #3 on: May 03, 2010, 21:13:09 PM »
coating the headers and the exhaust is something i would do in a heartbeat. if the right coating is used, the temperature drop in the engine bay is big. i used this on the headers off my capri and its very good. money well spend. a side effect: they are on the engine for aroud 10 years now and they still look like new.

coating the pistons is done for a smoother running in the bore and to reflect heat back into the combustion chamber. but the opinions vary alote and its not always save to do. i have seen piston damage caused by the coating letting go off the piston.

if its done to make a stock piston stronger, its a waist off time and money. buy forced pistons.
greetz Paul.

Capri V8 Driver.

Offline TimoXr4i

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Piston coating & manifold coating
« Reply #4 on: May 04, 2010, 17:20:53 PM »
so, the manifolds are a very good idea, got my brakes and steering almost ON the turbo, and the less heat they take, the better. will still make an heat shield for the steering and braking, but, keeping the temps low seems to be better all the time!

the pistons i'm not sure about!

Timo

Offline Dave

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Piston coating & manifold coating
« Reply #5 on: May 06, 2010, 00:15:30 AM »
Anything to reduce heat in the engine bay is a good idea full stop.

As for internal bits well it all depends I think.

If your after every last bit of power then all the tricks in the book.

But not just for a few BHP but also so you can push the engine just a bit more before it goes bang!


I use Mikes pistons.

Ceramic tops so you can push the engine a bit more & teflon skirts to reduce drag.



I also use teflon coated shells for less drag & so on.


However saying that if your just after decent power for your money & not pushing then it's wasted money to be honest!

Hence why Mike does them uncoated also.
« Last Edit: May 06, 2010, 00:16:47 AM by Dave »
Dave

Offline TimoXr4i

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Piston coating & manifold coating
« Reply #6 on: May 06, 2010, 12:54:10 PM »
well, the thing is, i'm trying to built an 300 horses machine, and run it on 50 horses less, so, it won't break that easy. What I tought abouth this coating, was it would make the pistons better against detonation, a bit stronger, but, becouse I use a wideband lamda and all the other precoutions i can think of, it won't be that nessacary?

I'm going to get me the prices for coating the manifold, cross pipe, and the downpipe also, boiling brake fluid is very bad (had it once on the speedway machine, banged really hard in the sidewall on midsland circuit @ lelystad, but hell, it went like stink, got the overall first prize that weekend  )

cheers Timo

Offline cossiemk2

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Piston coating & manifold coating
« Reply #7 on: May 06, 2010, 14:34:11 PM »
One simple solution against detonation is polishing the top of the pistons and the combustion chamber in the heads.

I have a set of Mike's older type piston and they were nice and smooth.

I also tried it on the heads but didn't have a small enough brush for it so I left it.

Offline capri v8 driver

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« Reply #8 on: May 06, 2010, 18:44:52 PM »
+1^

a other way is retarding the ignition timing under boost. best way to do that is a controller or a aftermarked ecu.

like i said before: coating the pistons is done for a smoother running in the bore and to reflect heat back into the combustion chamber. its not done to make pistons stronger. the coated pistons break just as easy as the uncoated ones.

if you really want 300 hp out off that engine and keep it reliable, buy forced pistons.
greetz Paul.

Capri V8 Driver.

Offline Dave

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Piston coating & manifold coating
« Reply #9 on: May 07, 2010, 23:15:18 PM »

I would assume you have forged pistons  

300bhp well I would forget any piston coatings, not worth it at that power level.
Dave

Offline capri v8 driver

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Piston coating & manifold coating
« Reply #10 on: May 08, 2010, 08:32:11 AM »
if i remember correctly, he wants to use the stock pistons.
greetz Paul.

Capri V8 Driver.

Janspeedcapri

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Piston coating & manifold coating
« Reply #11 on: May 08, 2010, 10:19:00 AM »
Quote from: capri v8 driver
if i remember correctly, he wants to use the stock pistons.
No, he has the scorpio pistons I was going to use before I bought used forged pistons off gengis. his c/r should drop to 8-1 or there abouts. When I was going to use them, I was not going to push them too hard, no way near 300bhp  

Offline capri v8 driver

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Piston coating & manifold coating
« Reply #12 on: May 08, 2010, 10:30:28 AM »
i did not know he is gone use scorpio pistons. the reason i tought he was gone use the stock pistons is because he ask a question about milling the stock pistons, some time ago. i have seen a topic where gengis offerd him those forced and coated pistons.

but 2.9 pistons are also not reliable at 300 hp. even boa pistons get into trouble above 300 hp.
greetz Paul.

Capri V8 Driver.

Janspeedcapri

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Piston coating & manifold coating
« Reply #13 on: May 08, 2010, 12:51:49 PM »
Quote from: capri v8 driver
i did not know he is gone use scorpio pistons. the reason i tought he was gone use the stock pistons is because he ask a question about milling the stock pistons, some time ago. i have seen a topic where gengis offerd him those forced and coated pistons.

but 2.9 pistons are also not reliable at 300 hp. even boa pistons get into trouble above 300 hp.

no, timo was not a member here when I bought those pistons off gengis - you are remembering old threads where I was asking about the same things   DAVE told me they were for sale in thread where you and dave were giving me the same advise you are now giving timo
« Last Edit: May 08, 2010, 12:53:01 PM by Janspeedcapri »

Offline capri v8 driver

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Piston coating & manifold coating
« Reply #14 on: May 08, 2010, 13:13:31 PM »
i may forget alote off things, comes with age, i guess.....    

this was the topic i was thinking about and after using the search function, i found it back:

http://www.fordpower.org.uk/forum/index.php?showtopic=6731&hl=pistons]http://www.fordpower.org.uk/forum/index.ph...&hl=pistons
greetz Paul.

Capri V8 Driver.

Janspeedcapri

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Piston coating & manifold coating
« Reply #15 on: May 08, 2010, 16:01:51 PM »
Ah, my mistake, it looks like they could well be the same set - offered to timo before I bought them
« Last Edit: May 08, 2010, 20:47:22 PM by Janspeedcapri »

Offline cossiemk2

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Piston coating & manifold coating
« Reply #16 on: May 09, 2010, 00:18:46 AM »
Quote from: capri v8 driver
but 2.9 pistons are also not reliable at 300 hp. even boa pistons get into trouble above 300 hp.


True.....

I fried my piston rings on my blown BOA at 320 hp

Offline TimoXr4i

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Piston coating & manifold coating
« Reply #17 on: May 18, 2010, 13:26:26 PM »
Quote from: cossiemk2
Quote from: capri v8 driver
but 2.9 pistons are also not reliable at 300 hp. even boa pistons get into trouble above 300 hp.


True.....

I fried my piston rings on my blown BOA at 320 hp


sorry, I do use the 2.9 pistons.

I won't drive the engine at 300 horses, for road use it wil run about 250 horses, and an after market KDFI ECU. I just was wondering if the coating helped that much. I will coat the manifolds becouse of the heat matter, and I'm saving money for forged pistons, but, they are expensive, and there are still many, quite expensive parts to buy...

cheers Timo

 

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