FA20 Engine Oiling, Bearings, and Starvation

[Wayno]

Originally Posted by Guillaume

It will. Even without oil cooler. Having an extra 10°C on your water will affect your oil temp. Don't trust me, trust your oil temp gauge. In effect, the A/C will keep your water below 100°C thanks to the 2ndary fan and thus keep the oil a tad cooler.

And your water will only rise above 92C at idle NA, so fans are useless on track for most people. Also, if you run the fans on full the Coolant won't drop below about 90.

[keen as]

Did I miss the update about the external oil cooler (and no aircon?)
Any pressure data?
Thanks for great thread/info/pics.

[Element Tuning]

Originally Posted by keen as

Did I miss the update about the external oil cooler (and no aircon?)
Any pressure data?
Thanks for great thread/info/pics.

Do you mean external oil pump or cooler?

The external oil pump didn't work in the configurations we tried so we had to put it back the way it was to race this past weekend. Here are a couple short clips. Enjoy.

Drag racing a C7 Z06 on the front straight https://instagram.com/p/0nSUzqtvWx/

Blazing up the esses https://instagram.com/p/0loX-tNvXs/

Then the transmission exploded again

[gramicci101]

Originally Posted by Element Tuning

Then the transmission exploded again

Do you just keep spares on hand now so you can swap them at the track?

[EAGLE5]

Originally Posted by Element Tuning

Do you mean external oil pump or cooler?

The external oil pump didn't work in the configurations we tried so we had to put it back the way it was to race this past weekend. Here are a couple short clips. Enjoy.

Drag racing a C7 Z06 on the front straight https://instagram.com/p/0nSUzqtvWx/

Blazing up the esses https://instagram.com/p/0loX-tNvXs/

Then the transmission exploded again

You totally failed to extend your middle finger while passing that Z06. I am disappointed. I'm also beginning to think it's time to invest in a Hollinger or something.

[Guillaume]

Originally Posted by Wayno

And your water will only rise above 92C at idle NA

Sitting in traffic by 25°C, coolant will reach 100°C easy peasy. Unless the A/C is on.

[Element Tuning]

Originally Posted by jsimon7777

You totally failed to extend your middle finger while passing that Z06. I am disappointed. I'm also beginning to think it's time to invest in a Hollinger or something.

While we're aren't racing with crazy power I think I'm way more abusive than most given the heat, extended wot running, and curb hopping. Serious lube and a cooler is your best friend!

Yes I'm going to have to bring a spare transmission to each major race if I choose to race at 400 hp or less. More than that will require a different gearbox.

[cdrazic93]

Originally Posted by Element Tuning

Yes I'm going to have to bring a spare transmission to each major race if I choose to race at 400 hp or less. More than that will require a different gearbox.

I smell Hollinger....maybe PPG? Everyone loves a good throw-your-head-back-for-some-whiplash-dogboxes

[sam69]

Originally Posted by Element Tuning

While we're aren't racing with crazy power I think I'm way more abusive than most given the heat, extended wot running, and curb hopping. Serious lube and a cooler is your best friend!

Yes I'm going to have to bring a spare transmission to each major race if I choose to race at 400 hp or less. More than that will require a different gearbox.

Have you thought about getting the gearbox cryoed to see if that would make it strong enough ??

[AJPG]

Originally Posted by Element Tuning

Do you mean external oil pump or cooler?

The external oil pump didn't work in the configurations we tried so we had to put it back the way it was to race this past weekend. Here are a couple short clips. Enjoy.

Drag racing a C7 Z06 on the front straight https://instagram.com/p/0nSUzqtvWx/

Blazing up the esses https://instagram.com/p/0loX-tNvXs/

Then the transmission exploded again

Nice indeed!

So sorry for the gearbox misfortune. Out of curiosity, each time that break is the same or it fails at different things?

[Darryljr11]

Time for some experimenting to make the stock gearbox stronger, like a new stronger tooth pattern for fourth gear and carbon syncros.

[Element Tuning]

Yeah it's almost always the same set of difficulties, power, and how I drive. As mentioned a pump, cooler, and butch fluid goes a long way under track conditions. Cushioning and lubrication to the gears is super important to reducing stress and heat.

What happens is that I start missing shifts due to a "sticky" shift feeling into 4th and usually 6th. Then it usually breaks when I pull the trigger on a fast lap as I'm usually crashing the curbs and catching air.

At this point a really expensive gearbox doesn't make much sense as the engines oil pressure is right at limit along with the gearbox. I feel we need to lick the oil pressure issue first so we can race at 450-500 HP.

John Hotchkis and one of his engineers took a liking to our FRS at VIR and we chatted a long time about oiling etc as he worked on a NASCAR team. A lot of what he said also jives with the engineers at Joe Gibbs who talked to me at the UTCC race. The bottom line is oil volume and cooling. Given our Pro Comp engine can deliver enough oil pressure when temps are in control I'm inclined to follow their lead but not sure I can run 6 gallons of oil and an oil cooler the size of my radiator.

I might hit Perrin up to either supply a "race" size oil cooler or even double up on what we have from them.

[D K]

There is a much cheaper trans alternative on the horizon.
Just be patient guys.

[cdrazic93]

Originally Posted by Element Tuning

Yeah it's almost always the same set of difficulties, power, and how I drive. As mentioned a pump, cooler, and butch fluid goes a long way under track conditions. Cushioning and lubrication to the gears is super important to reducing stress and heat.

What happens is that I start missing shifts due to a "sticky" shift feeling into 4th and usually 6th. Then it usually breaks when I pull the trigger on a fast lap as I'm usually crashing the curbs and catching air.

At this point a really expensive gearbox doesn't make much sense as the engines oil pressure is right at limit along with the gearbox. I feel we need to lick the oil pressure issue first so we can race at 450-500 HP.

John Hotchkis and one of his engineers took a liking to our FRS at VIR and we chatted a long time about oiling etc as he worked on a NASCAR team. A lot of what he said also jives with the engineers at Joe Gibbs who talked to me at the UTCC race. The bottom line is oil volume and cooling. Given our Pro Comp engine can deliver enough oil pressure when temps are in control I'm inclined to follow their lead but not sure I can run 6 gallons of oil and an oil cooler the size of my radiator.

I might hit Perrin up to either supply a "race" size oil cooler or even double up on what we have from them.

Other than the front of the car, where else would you put an oil cooler that size? I mean at this point do you need headlights because that could free you up some airflow... Off the top of my head I'm thinking under the car? But I dont think it would get enough air to pass over it, plus rocks and debris...