Throttle body size...

[OPAKRACING]

For a turbo b18c1, whwat size throttle body should i get?

[Jazn671]

70mm would be best...

[OPAKRACING]

Originally posted by Jazn671
70mm would be best...

well, if its too big, then i'll lose back pressure and that means i lose low end torque....so are you sure a 70mm would be best for a turbo b18c1?

[AzCivic]

Originally posted by OPAKRACING
well, if its too big, then i'll lose back pressure and that means i lose low end torque....so are you sure a 70mm would be best for a turbo b18c1?

You'll lose velocity not backpressure, but with a small fast spooling turbo it wouldnt matter too much anyway. I wouldnt even bother switching it out.

[Jazn671]

too big? i'd say it's too big for factory compression for a naturally aspirated honda but for a turbocharged honda, you'd want a 70mm throttle body streetable... you'd see up to 85 mm on 25+psi drag hondas...

[OPAKRACING]

Originally posted by Jazn671
too big? i'd say it's too big for factory compression for a naturally aspirated honda but for a turbocharged honda, you'd want a 70mm throttle body streetable... you'd see up to 85 mm on 25+psi drag hondas...

i see...thanks.

[Boosted3g]

I make quite a bit on a 65mm and it revs to 10.5K. If you want more Edelbrock will release a 70 and 75mm with an adapter in June