3rd Gen F.A.Q.'s Post Common Issues, Installtions, Repairs and more pertaining to 3rd Gen RX-7's.

13b Cosmo

Old 04-06-2004, 10:05 PM
Junior Member
Join Date: Oct 2003
Posts: 28

I looked at the turbos today. They are smaller, and the exhaust port opening of the turbos are actually smaller than the 13B REW, but that just means that the width of the metal surrounding the opening is thicker. This leads me to believe that the system would lose boost more slowly when de-accelerating. Wouldn't that also mean that the wastegate would be less susceptible to heat cracking that the 13B?
rkg8188 is offline  
Old 06-23-2004, 04:27 PM
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Join Date: Oct 2002
Location: St. Louis
Posts: 276

From what ive heard they restricted the exhaust pathways of the 13B cosmo to increase torque
boostdfd3s is offline  
Old 12-26-2004, 11:33 PM
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Join Date: Dec 2001
Posts: 19

Has anyone actually obtained hard numbers for the swap? Obviously the ports and runners flow more. It would be nice to have a hybrid with RE intake housings and REW exhaust housings.
the_glass_man is offline  
Old 12-27-2004, 08:00 AM
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Join Date: May 2002
Location: Okinawa, Japan
Posts: 4,928

I believe I am one of the first (to my knowledge) that has done the swap (RE manifolds with REW exhaust housings and ported FD primary/secondary ports port matched).

No numbers with the street port but I will be going T88/Bridgeport in the near future (3 ~ 4 Months).
jspecracer7 is offline  
Old 05-16-2007, 08:55 AM
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Join Date: Aug 2006
Location: Lancaster, PA
Posts: 2

I'm sorry but does anyone happen to have these parts at all, i'm about to have my engine rebuilt it would be nice to have these parts for the rebuilt. Please let me know thanks alot guys.
doduong11 is offline  
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