drive pressure
#4
#6
If you have 35 psi boost on the intake side and 35 psi drive pressure ( exhaust manifold pressure ) then thats good. Thats what they mean by 1 to 1 ratio. I bet my H1C with a 16 cm and a 60 mm GDS is not near 1 to 1. I am putting out 45 psi and I bet my drive pressure is much higher. A good turbo with a 4 inch outlet and a waste gate should be closer to the 1 to 1 ratio. There is much more involved that is way over my head, but, that is the basics as I understand them. So, in short, drive pressure is the PSI that is backed up in the exhaust manifold or pre turbo on the hot side.
#8
#9
Quick explination...
Drive pressure should ideally be 1;1 when against boost pressure. Pretty much what you are measuring is the efficiency of your turbo. When your drive pressure go up way above 1:1 you are trying to push the turbo to hard and its out of its map. You pretty much have a backup of gasses that is hurting things like head gaskets and turbo parts.
#10
If that's all the cyl pressure you have you wont have a running truck..
Quick explination...
Drive pressure should ideally be 1;1 when against boost pressure. Pretty much what you are measuring is the efficiency of your turbo. When your drive pressure go up way above 1:1 you are trying to push the turbo to hard and its out of its map. You pretty much have a backup of gasses that is hurting things like head gaskets and turbo parts.
Quick explination...
Drive pressure should ideally be 1;1 when against boost pressure. Pretty much what you are measuring is the efficiency of your turbo. When your drive pressure go up way above 1:1 you are trying to push the turbo to hard and its out of its map. You pretty much have a backup of gasses that is hurting things like head gaskets and turbo parts.