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I've been watching the old Columbo shows on TV lately.
He always turns around and says "Just one more question"
It would be interesting to understand how a carb intake combo that flows about 265 cfm on a 300 cfm head losses 37 cfm (228 cfm) mounted on a 273 cfm head?
That 273 cfm head only flows 26 cfm less bare than the 300 cfm head, they aren't that much different.
Charlie has so many tests, I may not have the cfm's exactly right, but close.
Wonder what the gasket sizes are on both heads and the intake?
Is there a mismatch (oversized) between the RPM and the smaller head?
Not trying to be a $#@%^
Something to be learned by figuring that out
I know it's not directly related to the TPI intake results, just the comparison.
Where are you getting this 265 cfm from? He isn’t flowing the intake by itself.
Charlie’s tests are from carb to head. Everything bolted together which is the only number that counts.
Super got 208cfm all bolted together.
The article he posted from Dulcich got 216.
Like I said earlier in the thread, each component has a resistance to flow. They add up when bolted together. Custom porting is what mitigates that problem which is why the TPI system in this thread is over 230cfm total through the head while others have gotten a “whopping 187cfm” all bolted together even using aftermarket parts.
Are you tracking now?
I don’t consider anyone as being rude. My posts however probably seem more rude because I’m at work in a shop in Texas that’s 90+ degrees with a bunch of stuff going on. So I apologize for that if it comes off that way.
Where are you getting this 265 cfm from? He isn’t flowing the intake by itself.
Charlie has a lot of good videos to watch and learn from.
In one he tests this modified RPM on some 300cfm World Product Heads.
265 cfm is what it flows there.
Originally Posted by MrIROBZ
I’m at work in a shop in Texas that’s 90+ degrees
Close to 100 degrees and humid for two weeks up where I am, not use to it ... but we function OK
Originally Posted by MrIROBZ
Super got 208cfm all bolted together.
The article he posted from Dulcich got 216.
Like I said earlier in the thread, each component has a resistance to flow. They add up when bolted together
Ya ... I am SuperZZ4 (that's me) ... and SuperL98 over on the Corvette Forum.
I have a little understanding of this air flow stuff ... kind of what I do
Asking questions, questioning results (especially my own) is how we understand even more.
Spent a lot of time (to much) on TPI intakes.
Cool project and I always get a kick out of watching and learning from Charlie's videos.
06-25-2024, 08:19 PM
