BLUE CPS tested NOT MY DATA!
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BLUE CPS tested NOT MY DATA!
Very interesting!
Jody did cylinder pressure testing on my truck Thursday and Friday with a new Black Motorcraft CPS and a new Blue International CPS.
This thing can now be laid to rest as I left with a black CPS in my truck.
Here are the hard facts.
Idle efficiency is 44.4 percent with the blue and 55.4 percent with the black.
Cylinder pressure at idle is 553 psi at 9 degrees ATDC with the blue and 572 psi at 8 degree with the black.
Combustion duration was only 35 degrees of crank rotation with the blue and 51 degrees of crank rotation with the black.
Torque at idle was 4.7 foot pounds per cylinder with the blue and 4.3 per cylinder with the black.
The testing was also done on the road and was along the same lines as the idle testing. It just compounded the numbers with RPMs. So there it is tested and graphed.
When you read the graph, the blue CPS doesn't have a clean curve. The black CPS gives a nice rise and fall on the graph with a nice rounded top. The blue CPS gives a rise sooner but has a divot in the top of the curve then falls off sooner.
Jody did cylinder pressure testing on my truck Thursday and Friday with a new Black Motorcraft CPS and a new Blue International CPS.
This thing can now be laid to rest as I left with a black CPS in my truck.
Here are the hard facts.
Idle efficiency is 44.4 percent with the blue and 55.4 percent with the black.
Cylinder pressure at idle is 553 psi at 9 degrees ATDC with the blue and 572 psi at 8 degree with the black.
Combustion duration was only 35 degrees of crank rotation with the blue and 51 degrees of crank rotation with the black.
Torque at idle was 4.7 foot pounds per cylinder with the blue and 4.3 per cylinder with the black.
The testing was also done on the road and was along the same lines as the idle testing. It just compounded the numbers with RPMs. So there it is tested and graphed.
When you read the graph, the blue CPS doesn't have a clean curve. The black CPS gives a nice rise and fall on the graph with a nice rounded top. The blue CPS gives a rise sooner but has a divot in the top of the curve then falls off sooner.
