obehave· Mini Mod
An increase in runner cross section will slow intake charge velocity. Also roots blower are dependent on resistance to generate boost. A larger volume will take longer to develop boost.CooperSAZ said:Maybe I am going above and beyond but follow me on this one...
When installing a larger TB onto the intake manifold, wouldn't one want to also increase the size of the intake manifold to match the TB? Do we know if the MINI IM is sized to the stock TB or is it larger? And, when the TB is installed, will the IM be bored out a little.
I only ask, we used to do this with our Civics. It just seemed like one went with the other. Maybe a bit overkill, but if/when I get mine, I will probably do the same. Doesn't pay to increase the TB without increase/matching the size of the intake manifold. I wonder if this is why people only say there is an increase in throttle response as opposed to an actual power increase??? Without making the IM bigger, there is still a "bottleneck" present!
Anyone else have any thoughts on this?
BUt honestly I don't know how much of a volume change it would take to make a difference. It would almost certainly move your power increase farther up the rev band.
Randy Webb is offfering Extrude Honed intake and IC runner pieces.
I'll be doing that before I get a TB, if I even get a TB.
This very much depends on if the polished parts give anything below 3K rpm.
High rpm driving is not something I do.
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