Preliminary PRC Ported Dart Pics & Results!!-->
11-19-2005 | 11:15 AM
#62
TECH Fanatic
Joined: Oct 2002
Posts: 1,842
Likes: 0
From: Dallas, North Mexico
id agree based on what bret said.
The more and more i learn about cylinder heads and fluids- the more i realize how stupid it is to measure anything on the engine based on cfm
the I.C.E. is a constant volume pump. Power product is based on mass flow rates. CFM is nothing more than velocity through the head with equal cross sections. Why CFM at a single pressure point?
IMO, CFM is only useful as a data point, not data results. But my opinion lacks creditials to hold much water.
The more and more i learn about cylinder heads and fluids- the more i realize how stupid it is to measure anything on the engine based on cfm
the I.C.E. is a constant volume pump. Power product is based on mass flow rates. CFM is nothing more than velocity through the head with equal cross sections. Why CFM at a single pressure point?
IMO, CFM is only useful as a data point, not data results. But my opinion lacks creditials to hold much water.
12-02-2005 | 01:26 PM
#63
Originally Posted by Jason 98 TA
They started life as a 225 Dart casting.
Off The Shelf ready to install Flow Info:
.300 196
.400 239
.500 276
.600 296
The port we are on right now is 229cc runner
I haven't seen the 205 version of the head yet so I have no idea what they flow.
Off The Shelf ready to install Flow Info:
.300 196
.400 239
.500 276
.600 296
The port we are on right now is 229cc runner
I haven't seen the 205 version of the head yet so I have no idea what they flow.interesting cast results. that is substantially lower than what dart advertises.
-3 @ 300
-15 @ 400
-14 @ 500
-5 @ 600
kinda dissapointing.
not bad ported numbers though.