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A growing number of you all are buying Legends because of their depreciated value and wanting to swap TYPE II engines or parts from it to make it more powerful well, i have news for you all, it may not entirely be worth your while. I pioneered the TYPE II setup back in 99' so my credentials speak for themselves.
The TYPE II is a bit better on paper, but the 30hp more the manufacture claims is hardly that. I like the TYPE II because the manifold is cleaner with less vacuum sensors and such, however when compared to the RL manifold its the RL that is cleaner.This obviously has nothing to do with HP. As for airflow, there should be no doubt that a port and polish on any of these manifolds will do just fine. The RL again comes up supreme in my opinion because of the way the manifolds runners are radiused. Also completely removing the VIS is an option for top end power on any of the manifolds. More info on that as i get more driving in my car. As for the heads the TYPE II are the best, but by a very small margin vs. the TYPE I. 1mm bigger fuel valves, better exhaust manifolds,and a bigger fuel rail is about it, not much considering the level of work.
Comparing the componets that matter the bottom end is identical vs TI & TII.
Bottom line if you have to replace the entire engine because of necessity by all means go TYPE II, but if your looking for HP there are way better mods out there to give it to you such as, intakes, exhausts, ECU upgrades etc.
Anytime you go porting this engine out expect to lose TQ, and on a car like this that may not be something you’re willing to lose unless you go all out.
~TRu Hybrid
The TYPE II is a bit better on paper, but the 30hp more the manufacture claims is hardly that. I like the TYPE II because the manifold is cleaner with less vacuum sensors and such, however when compared to the RL manifold its the RL that is cleaner.This obviously has nothing to do with HP. As for airflow, there should be no doubt that a port and polish on any of these manifolds will do just fine. The RL again comes up supreme in my opinion because of the way the manifolds runners are radiused. Also completely removing the VIS is an option for top end power on any of the manifolds. More info on that as i get more driving in my car. As for the heads the TYPE II are the best, but by a very small margin vs. the TYPE I. 1mm bigger fuel valves, better exhaust manifolds,and a bigger fuel rail is about it, not much considering the level of work.
Comparing the componets that matter the bottom end is identical vs TI & TII.
Bottom line if you have to replace the entire engine because of necessity by all means go TYPE II, but if your looking for HP there are way better mods out there to give it to you such as, intakes, exhausts, ECU upgrades etc.
Anytime you go porting this engine out expect to lose TQ, and on a car like this that may not be something you’re willing to lose unless you go all out.
~TRu Hybrid