Lloyd Elliot 243 stage 1 flow numbers
09-09-2014, 06:23 PM
#24
Never said they were the same. Y'all are way over thinking this. I'm not fixated on flow numbers. I will build this car and see what exactly it will do. By your theory maybe cam profiles aren't worth discussing or intake flow, etc. It was just a simple comparison.
09-09-2014, 06:59 PM
#25
You are going too far with your counter analogy. A cam profile is easily completely in detail measured.
A cylinder head is flowed at a steady opening which is NOTHING like what it sees in the running engine and the elastic nature or air and all that starting and stopping has a BIG impact.
Heads can be ported to flow more air on a flowbench but make a car slower, it can and does happen. Not saying you will see any such thing, I am sure what you have is a meaningful improvement, just saying a flowbench is not the measure of a head.
Flowbenches are easily manipulated too, us a larger radius on the clay at the inlet or maybe play with exhaust pipe length/diameter, or bore the head is flowed on. I have seen some "reputable" companies flow heads on bores that aren't readily available for the engine the heads go on. AFR even advertises flow numbers for one of it's LT1 heads flowed on a 4.125" bore, 4.060 is RARELY done on those with 4.030 usually considered the max.
Flow numbers are for advertising.
There are games to be played and they are played
A cylinder head is flowed at a steady opening which is NOTHING like what it sees in the running engine and the elastic nature or air and all that starting and stopping has a BIG impact.
Heads can be ported to flow more air on a flowbench but make a car slower, it can and does happen. Not saying you will see any such thing, I am sure what you have is a meaningful improvement, just saying a flowbench is not the measure of a head.
Flowbenches are easily manipulated too, us a larger radius on the clay at the inlet or maybe play with exhaust pipe length/diameter, or bore the head is flowed on. I have seen some "reputable" companies flow heads on bores that aren't readily available for the engine the heads go on. AFR even advertises flow numbers for one of it's LT1 heads flowed on a 4.125" bore, 4.060 is RARELY done on those with 4.030 usually considered the max.
Flow numbers are for advertising.
There are games to be played and they are played
09-09-2014, 07:06 PM
#26
You are going too far with your counter analogy. A cam profile is easily completely in detail measured.
A cylinder head is flowed at a steady opening which is NOTHING like what it sees in the running engine and the elastic nature or air and all that starting and stopping has a BIG impact.
Heads can be ported to flow more air on a flowbench but make a car slower, it can and does happen. Not saying you will see any such thing, I am sure what you have is a meaningful improvement, just saying a flowbench is not the measure of a head.
Flowbenches are easily manipulated too, us a larger radius on the clay at the inlet or maybe play with exhaust pipe length/diameter, or bore the head is flowed on. I have seen some "reputable" companies flow heads on bores that aren't readily available for the engine the heads go on. AFR even advertises flow numbers for one of it's LT1 heads flowed on a 4.125" bore, 4.060 is RARELY done on those with 4.030 usually considered the max.
Flow numbers are for advertising.
There are games to be played and they are played
A cylinder head is flowed at a steady opening which is NOTHING like what it sees in the running engine and the elastic nature or air and all that starting and stopping has a BIG impact.
Heads can be ported to flow more air on a flowbench but make a car slower, it can and does happen. Not saying you will see any such thing, I am sure what you have is a meaningful improvement, just saying a flowbench is not the measure of a head.
Flowbenches are easily manipulated too, us a larger radius on the clay at the inlet or maybe play with exhaust pipe length/diameter, or bore the head is flowed on. I have seen some "reputable" companies flow heads on bores that aren't readily available for the engine the heads go on. AFR even advertises flow numbers for one of it's LT1 heads flowed on a 4.125" bore, 4.060 is RARELY done on those with 4.030 usually considered the max.
Flow numbers are for advertising.
There are games to be played and they are played
Haha in other words....marketing tactics
09-09-2014, 10:41 PM
#27
I understand that but my heads were flowed by a friend, not where I bought them from and both were flowed under the exact same conditions. It is a comparison on flow. I will post up when I get HP and e.t. slips. Almost all of the test equipment we use is influence able. You keep stating things that most everyone here knows. I am just saying you shouldn't make a mountain of a mole hill.
11-20-2014, 07:19 PM
#28
I'd like to resurrect this, if I can. I had a few questions.
codyvette, are the heads installed yet ? Did you happen to take any photos of the ports ? What was LLoyd's treatment of the swirl ramp ? Were the heads milled ? Do you know what machine was used to cut the valve seats ? Is it a multi-angle cut or a radius cut ?
codyvette, are the heads installed yet ? Did you happen to take any photos of the ports ? What was LLoyd's treatment of the swirl ramp ? Were the heads milled ? Do you know what machine was used to cut the valve seats ? Is it a multi-angle cut or a radius cut ?
11-21-2014, 10:53 AM
#32
If anybody here ever had a LT1 car you would see 9/10 times the AI stuff runs faster at the track over the LE stuff. I never owned either, but this is what I noticed over the years with the LT1 crowd. Not sayin LE stuff does not perform, but again AI heads/cam setups seem to go faster.
