8th Generation Honda Civic Forum - View Single Post - INSIDE OF K20- cam gear,cam shaft,retainers,valves/springs,rocker arm (Merged)

skittleslegend · 01-14-2007, 01:10 PM

Um...ok. I don't think you really caught what I was saying. You're looking at a fairly significant loss in top-end power swapping those intake manifolds. The K20Z3 was designed specifically for the RBC manifold. The torque gain you're looking at is neglible. It's a high-revving 2.0L Honda block...you're not going to see any significant change in torque output anyway. People dump the TSX manifold for the RBC during K-swaps.

But I suppose if you're really set on using the TSX IM, then go for it. It'll fit. You should still be able to use the Si's throttle body, but from what John at Hytech has said, the TSX TB will swap over too.

01-14-2007, 01:10 PM	#48 (permalink)
skittleslegend Senior Member Member Join Date: Sep 2005 Location: Stowe, Vermont Age: 27 Posts: 7,824	Um...ok. I don't think you really caught what I was saying. You're looking at a fairly significant loss in top-end power swapping those intake manifolds. The K20Z3 was designed specifically for the RBC manifold. The torque gain you're looking at is neglible. It's a high-revving 2.0L Honda block...you're not going to see any significant change in torque output anyway. People dump the TSX manifold for the RBC during K-swaps. But I suppose if you're really set on using the TSX IM, then go for it. It'll fit. You should still be able to use the Si's throttle body, but from what John at Hytech has said, the TSX TB will swap over too.