is it normal to have a brownish color in the exhaust manifold?? i just did the lower intake manifold and noticed this brownish color inside if the turbo manifold.

 

cast iron is usually brown. I think its the white stuff your talking about. I have it in my manifold too, plus all down the exhaust right to the tip. I think its caused by a slightly lean mixture, but then again i could be talking out of my ***.

 

what could cause it to run lean?? i bought the car from a older man (4? yrs) and it is all stock and he is the only owner. any ideas??

 

Looks good (OK) to me.

 

cool, if its looks good then i can put everything back together. thanks for your guys help

 

Yeah I had the same thing.

I run Mobil 1 and mostly Sunoco Ultra 94, what do you use?

Dave

 

Mine looked the same way when I took it apart:

 

thanks for the pics, it helps me know that it is normal. this is the first time i took off the turbo on a rotary

 

Great reference pics guys.

 

Yep, mine looked like that too. Trust me, I do *not* run lean (I guess it's normal).

 

I have those white ash on my DP too. No body really know what cause that?

BC

 

White on the exhaust is from running hot/lean exhaust... kinda normal for the rotary.. if its really really white.. i'd be worried.. a little white is pretty normal.. have yet to run across any that haven't.