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Engine Specific Info and Questions => IDI Engine => Topic started by: natty on April 06, 2006, 10:36:50 am

Title: coated prechambers
Post by: natty on April 06, 2006, 10:36:50 am

Hi, Has anyone here completed their rebuild with ceramic themal barrier coated prechambers? What results have been experienced if any? Whould this stop the cups cracking?

Title: coated prechambers
Post by: tylernt on April 06, 2006, 06:57:28 pm

Someone, Malone I believe, coated his prechamber inserts. I plan to coat not only my inserts but also the bowl in the cylinder head, as apparently doing just the inserts doesn't make much if any difference.

Title: coated prechambers
Post by: natty on April 08, 2006, 12:01:05 pm

Hi, I meant the whole prechamber not just the cup. Sorry if I wasn't clear on that :oops: .

Title: coated prechambers
Post by: tylernt on April 08, 2006, 12:02:48 pm

Yeah I'm not aware of anyone that's done the whole prechamber, insert and bowl yet. Wanna be the first?  :P

Title: coated prechambers
Post by: dirtytom on April 08, 2006, 12:58:20 pm

I'm game for coating it. How much would it cost???? I am about to rebuild me 1.6ltd and want to do some stuff to it in the rebuild. I was also thinking about couting the exhaust ports to prevent preturbine egt from being absorbed by the block.

Title: coated prechambers
Post by: tylernt on April 08, 2006, 01:01:12 pm

Quote from: "dirtytom"

I'm game for coating it. How much would it cost????

Somebody was quoted $300 to do the prechambers, exhaust ports, exhaust valve faces, and piston tops. So if you're just doing the prechambers, maybe $100 would be my guess.

Title: coated prechambers
Post by: jtanguay on April 08, 2006, 05:10:29 pm

Quote from: "tylernt"

Quote from: "dirtytom"

I'm game for coating it. How much would it cost????

Somebody was quoted $300 to do the prechambers, exhaust ports, exhaust valve faces, and piston tops. So if you're just doing the prechambers, maybe $100 would be my guess.

$300 seems quite reasonable.   I wonder how coating all of that would affect cold starts?

Title: coated prechambers
Post by: kyledallas on April 09, 2006, 05:07:52 pm

the barrier would improve cold starts... the heat from the glow plugs would be staying in the chamber instead of being absorbed by the metal..
  same as it stays in the exhaust gas when you thermo barrier the headers
 improving exhaust gas flow.. K :D