Honda and Acura Car Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
108 Posts
Discussion Starter #1
I got a quick question for anyone that can help me. I got a crx with a b18b1 and i wanna get a aftermarket throttle body and later an intake manifold, well for the throttle body what is a good size (65mm? 68mm? 70mm?) and what are the difference in power between diff. sizes?
 

·
Registered
Joined
·
9,111 Posts
naha_music said:
so what are the advantages or disadvantages between different sizes?
the larger you go, you will need to port match to your IM and you cannot port match a 70mm TB because there is not enough material on the stock IM, also the larger you go you need to have a cam profile that can support that much flow, 70mm you would need a cam that makes power upwards of 10k rpm, you will also hurt the flow going that large, you will basically have too much air in the plenim of the IM, so much air that it cannot all fit in the runners in time and this will give you turbulence, which will cause a loss of power, not to mention the loss of low end power you will get by just installing this, like i said, no larger then 65mm
 
1 - 8 of 8 Posts
Top