Moe Greene

iTrader: (2)

Hi guys,

Is there a difference between the FD center iron and the FC center iron?

Moe Greene

j9fd3s

iTrader: (3)

yes. the important one is that the intake ports are in a different place

Moe Greene

iTrader: (2)

Would you happen to have photos of the difference in intake port? I'm buying a center iron but Im worried that its a FC center iron and not a FD.

DaleClark

iTrader: (55)

This shows the end irons, but the port difference and placement is significant.

https://www.rx7club.com/rotary-car-p...-boost-966709/

Easiest would be to compare to the iron that you have in pictures. It should be pretty obvious based on the port design.

Dale

BLUE TII

iTrader: (9)

Most distinctive feature of the FD center side housing to me as an FC guy is that the FD housing has a big rectangular groove/slot above the intake ports' face and below the LIM center bolt hole for the injector air bleed feed and the FC just has 2 little holes alongside the LIM center bolt hole for the bleeds.

Banzai-Racing

iTrader: (11)

huge difference

BLUE TII

iTrader: (9)

Do NA FCs not even have the center lower intake manifold bolt?

I never noticed that, but it sure explains why almost all the Holley 4150 style intake manifolds lack provision for the center bolt...

Banzai-Racing

iTrader: (11)

correct. no bolt.

Moe Greene

iTrader: (2)

Thanks everyone! This was extremely helpful! Now I can finish my rebuild and hopefully drive again.