what? has it changed that much? lol

 

I dont know. I just never heard of this formula. it doesnt factor in wall stiffness, tire profile etc obviously wont apply to every setup
what tires do you use for autox? maybe find the base pressure setting and adjust to your style

 

in street class? those were the rules not even 3years ago from what i recall - this is scca's street class, i ran a Mini in HS and an M3 in FS back then

 

oh i thought you were referring to tire pressures & inducing oversteering lol.
the rulebook is available on the SCCA website https://www.scca.com/pages/solo-cars-and-rules

 

Whats the effect on boiling point and/or heat transfer of super rusty water??

It was just water wetter and tap water in there for last few years.

Probably not helping the over heating issue with the slim fan. Just installed the CSF radiator and doing 3 flushes, then filling with coolant/water.

 

it plugs the radiator. just put a new radiator in last year after having cooling issue creeping up. same rusty water problem.

 

My car also ran hot (210-215*) on the CSF slim rad, big track in FL thought.
Put a stock rad and fan, flushed the system and now it’ll stay at 198-200 max.

 

CSF is not good quality IMO. I bought one for my X (for no dumb reason) and within a few months it leaked at a weld joint. Not sure if that means they even pressure tested it. I reached out and they said I was outside of warranty!

 

The CSF Slim radiator is the same thickness and capacity as stock. What you want is the "high performance" variant with more capacity part #3163 CSF HP Radiator. Mine with the stock fan still has plenty of room for larger turbo set ups as well but ymmv

 

I think stock is actually pretty good as far as radiators go - the only reason for replacement is to get rid of the plastic end tanks, from what I recall.

I use Sheepey's: https://sheepeyrace.com/products/she...ishi-evo-7-8-9

 

Thats not "Sheepy" its a CSF slim rad.

 

slim? thought it was full sized. never had cooling issue with it one way or another though

 

It's full size length/width. But it is a slim rad. CSF part number is 7075.

 

Personally I have the cheap CSF OEM radiator and it hasnt had any issues so far when I track my Evo with it.

I know there is an alternative with PWR. I have heard that ProAwe uses that radiator on their track Evo.

 

Cheapo CSF here too. I already overheated the motor when the serpentine belt quietly broke. Rad is fine, engine not so much