Question: Old intakes had the rear water passages tapped for the steam pockets I believe is the reason. Is that still a thing or an old wives tail?
Should I tap the TR water passages ?

Did that work ?

is this possibly a new design?

https://www.cpperformance.com/p-8014...ve-covers.aspx

I took out 3-4 exhaust valves on my old Merlin heads. 30 seconds on plane each time. Vowed to always have them flow water. Dyno'd new EFI setups (Dart heads) and forgot to drill new EFI intakes. Didn't have a problem, but probably going to do it over the winter.

I figured, better safe than sorry.
Thanx


btw here some cheap 2 piece valve covers


https://www.summitracing.com/parts/rnm-r400

Looks like a time capsule OR a coffin for Gates, Zuckerberg, soros, etc!!!! 😂. Nahhhh just a coffin.

When they come, post up measurement of port opening CSA at head and at plenum, the numbers listed on summit are clearly incorrect at 2.36 x 1.68 or you'd be grinding for weeks

Those 2 piece covers are the original Keith Eickert design that Hardin/CP now own the patent to and sell. If you want the new redesigned covers that KE sells you have to go directly to their web site and order directly. KE Auto and Marine. The easiest way to tell them apart is the two bolts that hold the cover on are outside of the gasket sealing surface. I have not had a chance to run my new ones yet, but I see no reason why they would not work well just looking at the design.

Thanks for info.
Here is link
Two Piece Valve Cover - KE Automarine by Keith Eickert

Keith has them in stock. Keith claims they have not had the leak issues with the new design. You can reach him at 386-283-0885.

How much. 2 bolts really nice! Personally I don’t really care for the looks rather the purpose.