 benifit of ceramic coating, is it worth it? |
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| crash914 |
 Dec 24 2019, 03:57 PM
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its a mystery to me  Group: Members Posts: 1,828 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region  |
is ceramic coating of pistons worth the effort?
what about doing only the piston tops and not the combustion chamber? I am getting a new set of pistons and can have them supplied with the ceramic coating... I would have to clean up and send out the heads to have them done..looking for forum wisdom. |
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| Mark Henry |
Dec 24 2019, 05:01 PM
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I did it on my 3.0, no idea if it actually works.
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| Mikey914 |
Dec 24 2019, 05:48 PM
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#3
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The rubber man Group: Members Posts: 12,741 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None 
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I would do valve heads, piston tops, and the exhaust. The idea is to get the heat out of the head. The 951 used alucil to slave the piston, but they didn't use a thermal coating on the block. With the cylinder head of the 951 having ceramic liners it did increased the efficiency of the turbo, but did remove heat from the head also.
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| ConeDodger |
Dec 24 2019, 06:02 PM
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Apex killer! Group: Members Posts: 23,853 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California
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The engine builder for my Datsun says it’s a 10/10ths thing. He said only do it if you’re going for the championship or your budget is unlimited.
This makes 300HP where the original engine only made 150. Attached image(s) 
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| HAM Inc |
Dec 24 2019, 06:43 PM
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#5
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Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
I have direct experience of it preventing damage and warpage to T4 heads.
In one particular extreme case a customer with data acquisition recorded sustained 1450*EGT's for a double weekend of vintage racing. It got so hot it eroded the exposed section of exhaust guides, which was why the customer sent me the heads to check out. Zero warpage or detonation damage and no loss of valve seal to the seats. I've been recommending it for all of my bus customers for several years now. I can't speak to power gains, but it does help prevent heat related damage to the heads. Merry Christmas! |
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| BeatNavy |
Dec 24 2019, 07:45 PM
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Certified Professional Scapegoat Group: Members Posts: 2,944 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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I've been running a set of T4 heads for a couple of months now that Len built for me. I had him ceramic coat them based on his recommendation. I know he's done a bunch for others here on the World. From my standpoint they run significantly cooler than anything else I've had.
Len is the man (IMG:style_emoticons/default/beer.gif) |
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| Andyrew |
Dec 25 2019, 03:50 AM
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#7
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Spooling.... Please wait Group: Members Posts: 13,377 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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QUOTE(ConeDodger @ Dec 24 2019, 04:02 PM)  The engine builder for my Datsun says it’s a 10/10ths thing. He said only do it if you’re going for the championship or your budget is unlimited. This makes 300HP where the original engine only made 150. (IMG:style_emoticons/default/agree.gif) Race engine or street engine pushing the known limits? Sure... I did a lot of research before I determined my money was better spent elsewhere, like coated bearings, balancing the rotating assembly, and better valve materials... This was on a water cooled 1.8L motor that I built the motor to handle 600hp....... |
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| Tdskip |
Dec 25 2019, 08:32 AM
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#8
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Advanced Member Group: Members Posts: 3,702 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(ConeDodger @ Dec 24 2019, 07:02 PM) The engine builder for my Datsun says it’s a 10/10ths thing. He said only do it if you’re going for the championship or your budget is unlimited. This makes 300HP where the original engine only made 150. @ConeDodger - tasty! |
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| Mark Henry |
Dec 25 2019, 12:43 PM
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#9
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(Mikey914 @ Dec 24 2019, 06:48 PM) I would do valve heads, piston tops, and the exhaust. I've found ceramic and DFL don't adhere well to steel, they get a better bite into aluminum. Even with aluminum the ceramic doesn't like sharp corners like valve recesses etc. On my 3.0 I used DFL on the skirts and bearings, I DFL coated my rocker pads, most of it wore off, but you can still see a bit in the "pores". The ceramic coating I used on the piston tops and the head chambers and ports, it took me several tries till I got the process down pat. BTW it isn't the same stuff as on ceramic headers, it's a very dull finish. |
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| crash914 |
Dec 25 2019, 04:53 PM
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#10
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its a mystery to me Group: Members Posts: 1,828 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Hmm, if Len can do the coating, it might be the thing to do. Pistons are 6 weeks out anyway
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