Piston coatings?
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Re: Piston coatings? (JUAN J SANCHEZ)
Juan, contact Jim Barth (tpi 421 vette). He did a lot of coating on his motor and knows a shop real well. good luck! :cheers:
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Re: Piston coatings? (BAM92)
I run them...Makes a big difference. I use a reflective thermal barrier coating on the crowns and a PTFE based moly lubricant coating on the skirts. It does eliminate hot spots and heavily reduces octane sensitivity. My 434 uses coated components, runs pump gas and is 12.5:1 compression....
-Jeb
-Jeb
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Piston coatings? (jburnett)
Thanks guys! J-burnett where do I get these coatings you mentioned? I 've never used them and I'm considering it on my 406 before I assemble it. What about the chambers?
Advanced
Joined: Aug 2003
Posts: 88
Likes: 0
From: Yardley Pa
Re: Piston coatings? (JUAN J SANCHEZ)
http://www.swaintech.com/car1.html
Hope this helps! they are in NY maybe close to you from NJ
:steering: :chevy
Hope this helps! they are in NY maybe close to you from NJ
:steering: :chevy
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Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Re: Piston coatings? (RedyGo)
Yeah but shipping to Canada is a beyotch (more money that is) negating any savings... My coatings were done by a friend of mine who uses Calico Coatings... I've also used Swain Tech a lot on other motors; both are excellent products. I've seen some of the TechLine stuff at SEMA and it's gaining a good following for being a good product; plus you can buy a cheap Harbor Freight powder coater and do it yourself. I have a powder coater but my time's too damn valuable so I'd rather pay someone else to do it!! My pistons were about $250 for coating (crowns and skirts). My cylinder heads' combustion chambers and exhaust ports are also reflective coated as well as the valve faces. The valve stems have the same PTFE Moly coat on them that the skirts do and so do all my bearings. On top of all this my entire engine has been cryogenically processed (well, that IS my business). Pretty high tech piece in all...
-Jeb
-Jeb
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Piston coatings? (jburnett)
Thanks again guys! What would be the minimal things you would recommend to have coated. I'm considering the piston crowns and skirts , valve springs if the coating increases durability (also depending on the cost) and maybe the chambers. What does the coating do for bearings? I'm basically looking for ways to increase durability and combine coating,cam timing, Evans coolant, and piston and chamber design to increase CR and still run pump gas. :confused:
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Re: Piston coatings? (JUAN J SANCHEZ)
I would have the crowns and skirts coated, the bearings, the combustion chambers and valve heads... At the very least do the piston crowns and the combustion chambers with a reflective thermal barrier coating... Valvesprings? Send them to me and have them cryo treated...
-Jeb
-Jeb
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Piston coatings? (jburnett)
I'll send you the valve springs as soon as I pick them up. I'll send the heads , pistons and bearings to Swain coatings. Before or after I port the chambers? What will I gain from these coatings? Longevity is what I'm looking for . Will coating the springs give me longer longevity? Bearings?Should I approach my build up any different with these parts coated ? Thanks for the reply J-burnett! :confused:
Burning Brakes
Joined: Sep 2001
Posts: 1,013
Likes: 9
Re: Piston coatings? (jburnett)
Does anyone have a link for Calico coatings? I've sent things to swain and had great service, but always want to see what else is available.
[Modified by Mr6spd, 2:59 AM 9/27/2003]
[Modified by Mr6spd, 2:59 AM 9/27/2003]
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Piston coatings?
Dave Vizard highly recommends these coating, I'd like to do this someday. I'm wondering, if a car is a daily driver, will it last 50K miles? Any info on the life of these coatings? Anyone pulled their heads after a bunch of miles to see if it's still there?
Eric
Eric
Racer
Joined: Jun 2002
Posts: 428
Likes: 0
From: Dallas Tx
Re: Piston coatings? (silver & red CE)
Think thermally. Coat the parts in contact with the highest heat.
That would be the combustion chambers, piston top, valve faces, back side of the exhaust valve, and exhaust ports. Oil and water temps go way down, and sensitivity to detonation greatly reduced. Secondarily, might want to coat the bottom of the intake manifold and back of the intake valves to reduce intake charge temps.
For friction, think of the most rubbing. So anything that slides rather than rolls. Piston skirts, differential gear teeth, valve stems, valve springs, crank and con bearings, cam bearings more or less in that order of effect.
That would be the combustion chambers, piston top, valve faces, back side of the exhaust valve, and exhaust ports. Oil and water temps go way down, and sensitivity to detonation greatly reduced. Secondarily, might want to coat the bottom of the intake manifold and back of the intake valves to reduce intake charge temps.
For friction, think of the most rubbing. So anything that slides rather than rolls. Piston skirts, differential gear teeth, valve stems, valve springs, crank and con bearings, cam bearings more or less in that order of effect.
