Just went through this thread. Good luck on the build Cosmo.

I am skipping most of the coatings and using WPC on all internals instead. Then Calico CT-2 Thermal Barrier Coating on Piston tops and Calico CT-5 oil-shedding coating on crankshaft counterweights, rods, windage tray and oil pain. Just in case you want to look into that as well.

Well I got a call today from bobby telling me the pistons should ship out next week from CP. After that the build should take about 2 weeks give or take since they are cryo treating everything but the pistons.

This Saturday the motor will be removed and will post pics..

I managed to get a little more work done on the car today. As I was taking off the plenum I heard metal fragments rolling around inside. My question now is how to clean the inside of the plenum since it does not come apart.. I know I could blow it out with some compressed air but that's still no guarantee it would all come out. If anything is left behind it will destroy my new motor..

Wow... Jeezus... Maybe with water too? Or some liquid to carry the metal out?

Mail it in to Z1 and use it as a core for their super secret manifold mod?

I wonder how well they'll hold 15-18PSI though with that much plastic taken off

I doubt they remove that much material, but they're being unnecessarily secretive. I'm pretty sure its a light cleanup inside.

I debated on the water method but just didn't want to have it air dry to possibly get contaminates inside.. This is the first time hearing about the z1 secret surprise. The last time I was there my secret surprise was a blown motor.. No more surprises for me!!! lol

If you know someone with a parts washer tank you could go flush it out there.

Get some tape, roll it up into a long tube and shove it into the plenum. THen you can shake it or use the compressed air and blow it inside till it all sticks on the tape.

Now that sounds like a cool idea but still no way of knowing its is all out... Just one little metal fragment could scar the cylinder wall.. I believe I read somewhere that the stock plenum could be opened but it wasn't easy. Wish we had more options on aftermarket plenums...

Can't open it unless you have a hot knife... A few days out in the sun will dry it out for sure. And/or I bet you can put it in the oven for a decent amount of time at 200-250 degrees then blow it out. Maybe repeat once or twice?

Buy a new plenum?

$300+/-

Kinda sucks, there is a guy selling one though