Hi guys!
We finally got our final flow data on the UCE head, and I thought you might like to see it.
I'm just going to post the intake numbers here today, and the exhaust flow numbers are ported to a corresponding percentage of the intake numbers in the UCE Ported Head that we did.
First, here is the flow chart from the stock UCE head as it comes from the factory.
The stock cam only lifts to .300", but it was flow tested to .400" where it flattened off.
STOCK HEAD:
Lift--------CFM
.050".....35.9
.100".....65.3
.150".....89.09
.200"....111.74
.250"....126.84
.300"....135.9
.350"....141
.400"....142.5
Here's a photo of the UCE head on the flow test bench.
And this is the flow from our UCE Ported Head.
This head was flow tested to .500" because we will be adding more lift than stock.
PORTED HEAD:
Lift--------CFM
.050".....28.72
.100".....52.414
.150".....86.07
.200"....113.25
.250"....135.9
.300"....156
.350"....174
.400"....189
.450"....195
.500"....198
We can immediately notice that the flow numbers on the UCE Ported Head are more oriented to better flow at the medium and higher lifts, and that the low lift flow is slightly reduced, compared to the stock head flow. This is part of porting practices to get most flow where it counts, and limit intake flow losses out the exhaust valve during overlap period.
The UCE Ported Head was ported to take advantage of the higher lifts that it will be seeing in our application.
The peak flow rate is increased very significantly, and it compares quite closely with the flow seen in the Ace Fireball 535 kit which we make for the Iron Barrel Bullets.
We expect this to do very well.
Here's a pic of the exhaust port outlet where the header pipe connects, for you guys with header questions. The exhaust port is not exactly round, and it is done that way intentionally, so don't be concerned that it isn't perfectly round.
Graph of flow comparisons, stock UCE vs Ace UCE attached below.