gnx7

iTrader: (28)

I'm most likely buying some as cast TFS 220cc heads with some bowl work from TEA (for a 6.0 bore) and was planning on running Inconnel exhaust valves. I want to take the car to the 1 mile shootout events which means the motor will be under boost for extended periods. It is a forged iron 364ci GT88 setup in another Mazda FD RX-7 I have collecting dust.

Am I wasting my money on these parts? I heard they are not much more expensive vs. the standard s/s valves..... How much are they per valve?

The Beast

iTrader: (16)

I've got the Ferrea Super Alloy Inconnel exhaust valves in my car, since Lingenfelter suggested I go with Inconnel valves. I got them for $30 each.

gnx7

iTrader: (28)

Since s/s valves are around $10/valve that sounds fair enuf. Under $200 extra for Inconnel.

Any other input?

stevieturbo

For a turbo build, it would be a wise investment.

TFS fitted Inconel ex valves to mine when I got them rebuilt/repaired....although the fact I fucked all the old valves wasnt down to wrong material. That was just me lol

The intakes were by far the worst !!!!

OUTLAWZ RACING

iTrader: (9)

They would shed heat off the valve better than a standard valve, Thats a good deal for those long boosted runs.

DeltaT

iTrader: (5)

I sprung for them too, for a supercharged motor that's going to see some road racing, mile action and top speed runs at some point. Like Stevie said, good insurance.

Jim