Quote:
Originally Posted by Mazdabater
Haha yeah I wanted the brap brap wasn't for a power gain, was actually after more response and had a mate tell me that a bridge will help spool a bigger turbo. Guess I'll end up sticking with the extend port.
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spooling and when and how they make power are two different things, i have done lots of these things and even a bridge port with a small turbo like a GT35R or larger T04Z sill have poor mid range power, its due to the flat torque curve these engines make.
A stock port has massive mid range tq as does not so large street ports, they have a much fuller power band as a result. If you want to improve the response and take into account all the stuff I mentioned in the first post then smaller ports are always better, if your fixed with the block you have then turbine size is your only other option. There is other stuff you can do like shorter exhaust manifolds and smaller intercooler pipe lengths and intercooler volumes that will greatly increase response too.
Excessive Porting of the engine is one of the worst things, and anything you do to it in that race only category makes it much more sensitive to exhaust system pressure and we all know how rotaries hate that. Anyway don't want to come across as a know it all, but i have done lots of these cars with heaps of different set ups and power levels, street to full on drag animals running 160mph in 400m. Me and my friends who do the same talk about this stuff allot and all the old boys say pretty much the same, porting when you are talking turbocharged is one of the last things you should look at and the more you do of it the more sensitive and less usable the engine will become especially for anything driven on the street. The headaches are not worth the crap................. sorry brap hahahaha