Cosmo Vs T2 Rx7
#3
The 13b Cosmo engine also had a larger intake surge tank. look in the porting section, someone was nice enough to post some pictures of the 13b cosmo intake ports in comparison to another (not sure if it was FC or FD) The engine mounting is different as well
#4
Ive got a 13b-re cosmo...The ports are way bigger...same size as 20b 3 rotor...and the intake runners are much larger too.. and its a stock twin turbo...and the best part is you can use 2nd and 3rd gen parts on it.. like a 3rd gen turbo manifold and some of the block off plates for a 3rd gen too. you can also use a 3rd gen flywheel on it.
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