2nd Generation Specific (1986-92) | Forum profile

Mazda still has not fully alleviated this problem. The Rx-8's have their aux ports operated by a motor, and they still can stick from carbon buildup. Whatever new motor Mazda comes out with (16X is their current prototype) probably will not have secondary injectors in the LIM. That should help with the carbon buildup at least some. From the pics I've seen so far, there will be primary injectors directly in the rotor housing and then...

The Koyo made for an S4 has the extra fill location directly on top of the tank, rather than on a neck extending out. I actually just cut the thing off and had a plate welded over the hole, since I too have my filler on the thermostat cover.

We dont know, his tacometer is down.

^ that works too. Just follow the instructions on the RTV bottle. Some want you to tighten right away, some want you to go finger tight till it dries a bit and then torque it down.

Quote: Originally Posted by N3v well I guess I need one of those then. just to clarify though, an s4 coolant neck won't fit on an s5 pump housing? No, it won't. The plastic S5 thermostat housing has a three bolt mounting flange, the S4 unit has two bolts. You could make an adaptor, not sure it's worth the effort.

I say act on the clutch. Suspension? I let someone else answer that. I have kyb agx struts, but there's better to be had.

Are you using sealant? RTV Black or Hondabond ?

The assembly can be removed from the intake by taking out the two screws holding the plate on. Then you can use carb cleaner to dissolve all the gunk you can now access. Warm it up, shoot carb cleaner into the joint and then let it cool. The temperature changes will draw the cleaner in. The ports plug up for various reasons. Carbon buildup is a natural byproduct of burning a hydrocarbon fuel. The secondary injectors spray onto the aux port...

Find out if your model has the LSD diff, you should have that for drifting. Weight reduction, remove everything you can if you don't care how it looks.

Quote: Originally Posted by global247 What should the compression be on an s4 tii motor?? I know that forced induction is a lower compression motor.... so what should it be at, I am looking to buy one but don't know what is good and bad on a turbo moter. Before buying a car, read all three (including the non-turbo) buying guide links in the Frequently Asked Questions (FAQ) thread on this subforum....