Thermal barrier coatings, and oil squirters.

[Valvebounce]

Hey team,
Two questions in one really.
I'm thinking about doing the whole thermal barrier coating for a CA18DEZ I'd like to build. It'll be cobbled together using parts of a few motors. I have a four port head too. As I see it' tere can be no real drawback in having the pistons, combustion chambers, valves, and exhaust ports coated with a thermal barrier coating.
From what Iunderstand it has the ability to keep much of the heat from conducting into the rest of the engine.

This being the case, is not the whole premise of oil squriters to ry and soak some of the heat from the pistons? The drawback of this being greatly increased oil windage, and lost power. So with the TBC, surely the squirters wont be anything like as critical as in a standard (uncoated) motor. I've heard that with forgies the squirters are also no longer required also.
Given my pool of parts, i'm leaning toward a DE block purely for the sake of it being cheaper than giving the DET block at my disposal a line bore which it needs.


What do you fullas reckon?

[sjbsuperman1425]

I dont really have any experience with TBC or going any deeping into this engine than replacing the head gasket but heres my .02.

If you are using forged pistons I'd try and go with CP since they allow the oil squirters to be retained, and also retain the oil squirters. My idea behind it is even with the TBC, you mind as well have the extra assurance of having the squirters there doing the job there are intended to do, even if the TBC allows you to not run them or if forged pistons dont "require" them to be there. A little extra insurance never hurt you know?

[Buddyworm]

If you're building it with parts you got laying around I say build it and run it through the ringer for a year then take it apart and see how it looks. An experienced mechanic should be able to tell you a thing or two about it, no? I mean, what have you got to lose? Some valves, pistons, crank and conrods? If it lets go just grab a new block and revise!

[Valvebounce]

This is it Buddy.
That TBC isn't that expensive. And a bloke I know reckons that it's better valve for money than forged pistons.

[bentvalves]

those coatings work wonders. i would however be weary of DIY kits where you apply the coatings yourself. an exhaust manifold or downpipe is one thing if you want to DIY. but coating engine internals is something you want to leave to pros. Id look into zircotech if your serious.

[Valvebounce]

I wouldn't do it myself.
I had the pistons in my supercharged datsun coated, and they've not cucccumb yet.