I think I've decided against the ssautochrome stainless jobbie, since some people have had issues with them. I've found the HKS FD mani, but not for the FC. Anybody?

HKS doesn't make an SS manifold for the fc. It only makes a cast one. The one from ssautochrome is new. The one everyone has had problems with was meant for the 3rd gen.

I'm fine with a cast one. I heard it can take the heat better than stainless.



Nevertheless...

Anybody have something good to say about the ssautochrome one for the FC?

you can always try asking one of the members in japan to pick a used one up

Does it matter that the ssautochrome mani is not divided? Is the HKS cast mani divided? I'm guessing not?



What are the benefits of divided vs. undivided?

Does anybody have a picture of this HKS mani?



17141-121188 MAZDA RX-7 1987-1991 Turbo ; Engine Code: 13BT TO4 Internal $340.00

Now for my third attempt at this(keep getting interupted). Divided manifolds flow better producing faster spool and have less restrictions than cast manifolds. The HKS cast manifold isn't divided. I believe the ssautochrome manifold is divided but I don't thinkit is equal length.

just wait til 9base3 gets done fabricating a manifold

HKS manifoldssautochrome manifold

Niether manifold is divided, but the ssautochrome offers the ability to use an external wastegate for better boost control and is cheaper. I found the HKS one at the "evil store".net and the ssautochrome one on ebaymotors.

What's the diff. between "standard" wastegate and "external" wastegate? I'm presuming "internal" means it's built into the mani, because the price is so much higher. If the cast HKS mani has no provision for an external wastegate, and doesn't include one, how is boost controlled? With a wastegate built into the turbo like the TII stocker? https://www.nopistons.com/forums/pub...1047683561.gif