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Marke,
Very cool updates!! Thanks for keeping us up to date.
Your plan to install R compound tires raises a possible red flag in my mind with respect to oil delivery.
I'll pass on a comment one of the instructors at the ARCA race school made.
"Turbocharged engines, sticky tires, and wet sump oil systems are a bad combination. It seems that engine parts often end up on the track."
Although this is just hearsay, it lines up with some other experiences that have been related by other reliable sources. The guys at XS Engineering posted a vid where their oil pressure dropped to zero during some corners and they credited those events with engine damage they sustained during that race.
I've heard some guys correlating problems with oil systems to high power engines, but to my thinking the problems follow this path....
1 - Wet sump oil system failure correlates to the pickup sucking air or foamy oil. This correlation may not be 100%, but I'll bet it's close enough for our applications.
2 - Low oil level at the pickup results from a combination of low oil level in the sump (more on that in a second) and both longitudinal and/or lateral accelleration.
Low oil level in the sump is caused by either not enough oil in the system (easily avoidable!) or oil pooling in the head and therefore not sitting in the sump. The restrictor orifice will help here, but free oil return from the head to the sump is a key for extented high rpm operation.
The sump baffle will delay the onset of accelleration related grief, but there are definately limits. I don't know what they are, but the laws of physics dictate that there's combination of accelleration magnitude and duration that will expose the oil pickup. The baffle will significantly raise the magnitude of the tolerable transient g force, but if you spend more than X seconds sustaining high g's the oil will still run past the baffle and ....
Please don't hear me telling you not to install R Compounds! I see you doing many of the things I'm doing, or plan to do with both build and application. I just want to share the concerns I've got for my own car so you've got the opportunity to think about it before rather than after the fact.
Cheers,
Dan
Very cool updates!! Thanks for keeping us up to date.
Your plan to install R compound tires raises a possible red flag in my mind with respect to oil delivery.
I'll pass on a comment one of the instructors at the ARCA race school made.
"Turbocharged engines, sticky tires, and wet sump oil systems are a bad combination. It seems that engine parts often end up on the track."
Although this is just hearsay, it lines up with some other experiences that have been related by other reliable sources. The guys at XS Engineering posted a vid where their oil pressure dropped to zero during some corners and they credited those events with engine damage they sustained during that race.
I've heard some guys correlating problems with oil systems to high power engines, but to my thinking the problems follow this path....
1 - Wet sump oil system failure correlates to the pickup sucking air or foamy oil. This correlation may not be 100%, but I'll bet it's close enough for our applications.
2 - Low oil level at the pickup results from a combination of low oil level in the sump (more on that in a second) and both longitudinal and/or lateral accelleration.
Low oil level in the sump is caused by either not enough oil in the system (easily avoidable!) or oil pooling in the head and therefore not sitting in the sump. The restrictor orifice will help here, but free oil return from the head to the sump is a key for extented high rpm operation.
The sump baffle will delay the onset of accelleration related grief, but there are definately limits. I don't know what they are, but the laws of physics dictate that there's combination of accelleration magnitude and duration that will expose the oil pickup. The baffle will significantly raise the magnitude of the tolerable transient g force, but if you spend more than X seconds sustaining high g's the oil will still run past the baffle and ....
Please don't hear me telling you not to install R Compounds! I see you doing many of the things I'm doing, or plan to do with both build and application. I just want to share the concerns I've got for my own car so you've got the opportunity to think about it before rather than after the fact.
Cheers,
Dan
8-) 
:bow down: 
:!: :!: :!: 
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