FA20 Engine Oiling, Bearings, and Starvation

[dp1]

Originally Posted by texasbound972

So you're saying that 0w40 gives you worse gas mileage than 5w30?

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Not my words but I clearly interpreted the comment that way

[Calum]

Originally Posted by dp1

Another private answer I got from a trusted source is that I can mix Motul 300V 5w30 and 0w40 oils on a tracked car, with some hit on gas mileage with w40. Thank you all

0w40 is often nothing but marketing, SAE J300 states that they can have the same viscosity and shear rate at engine operating temperatures. The range of viscosities that are allowed to be labeled as 0w40 can be more viscous than oils labeled as 5w30, but they don't need to be. I highly doubt you would ever be able to measure a mileage difference between the two in a real world test.

http://www.viscopedia.com/viscosity-...cosity-grades/

[Calum]

Originally Posted by texasbound972

So you're saying that 0w40 gives you worse gas mileage than 5w30?

Sent from my SAMSUNG-SM-N920A using Tapatalk

The higher number should indicate a more viscous oil, which would cause the engine to work harder to pump the oil. But the differences at operating temperatures are often negligible, if they exist at all.

[ajc209]

It definitely does exist and its one of the reason our car runs such a low pressure; fuel economy.

Bare in mind a thicker oil will generate a bit more heat too. The extra energy used to pump the thicker oil round has to go somewhere.

[Calum]

Originally Posted by ajc209

It definitely does exist and its one of the reason our car runs such a low pressure; fuel economy.

Bare in mind a thicker oil will generate a bit more heat too. The extra energy used to pump the thicker oil round has to go somewhere.

If you're comparing 0w40 to 5w30, than I disagree, for the reasons I stated above. If you're comparing 0w20 to either of the other two, that I'll agree with. Though the difference isn't going to be anything huge, I'd estimate a percentage or two for highway driving.

[derek1ee]

This may be totally off the topic, but I'm curious what this is?

[DocWalt]

Originally Posted by derek1ee

This may be totally off the topic, but I'm curious what this is?

Fire extinguisher nozzle

[derek1ee]

Originally Posted by DocWalt

Fire extinguisher nozzle

Thanks!

[Gear_One_Performance]

it responds to the "oh shit" handle

[Element Tuning]

I know it's been forever since I've updated anything or even been on the forums. Honestly we have just been busy with engine building, client builds, and new projects. We also had been racing with the same FA20 successfully for over 1.5 years. Great photo by @JonAthanboppenheim



Our number one goal for our engine package was to get reliable oil pressure under racing conditions for higher power and also for our 9k rpm head package. As you can see these bearing could just go right back into the motor!



What nobody knew was that were were also testing WRX DIT parts in our engine as a means to further develop that platform without having to build another WRX race car. With the lower compression pistons and downright beefy ringlands we decided it was worth seeing how these engines held up. Now these do not drop into the BRZ motor so don't get any bright ideas but we broke multiple track records with this motor over the last 1.5 years.

If you've never seen this FRS Time Attack car in action, it's absolutely mental! Here's a record run and a win at Gridlife Atlanta. Even in 100 degree weather I was able to match my best ever lap there of 1:30.3

[ame="https://www.youtube.com/watch?v=2gr9ma_vFCw"]Another record lap at Gridlife Road Atlanta in the Time Attack FRS - YouTube[/ame]

That wasn't good enough for the racer in me and I wanted a sub 1:29 as I knew the car and me had it in us. As we all know that transmission is on the brink at 400 whp and so we've always raced it there and even detuned it more in 4th gear. My car has made over 500 whp on race fuel however and I wanted to risk it but even on E70 my fuel system was barely adequate for 400 whp. Given I would only turn it up in 5th and 6th I decided to risk a couple more psi even though I knew it would run lean. As I approached the last turn it let go and I coasted across the line with a 1:30. So close and so not worth it. Hahahaha! The carnage of what's left of the OEM cast piston.




Even with such massive destruction (it let go at 120 mph) you can still see how effective the oiling and engine mods were in our car. Now this is the major downside to a cast piston! Even though this piston handled over 500 whp on the street, and 400 whp racing for 1.5 year, when things go wrong the piston shatters in spectacular fashion. A forged piston would never do this so it's it's well worth the upgrade cost even though these FA pistons are a huge improvement over the EJ pistons.

Thanks,
Phil Grabow

[GsxrMe]

Are those sexy king bearings I see?

[Element Tuning]

Originally Posted by GsxrMe

Are those sexy king bearings I see?

OEM bearings actually.

[StraightOuttaCanadaEh]

How much labour are you looking at if you want to replace your pistons for forged items? Just curious how long it takes

[Element Tuning]

Originally Posted by StraightOuttaCanadaEh

How much labour are you looking at if you want to replace your pistons for forged items? Just curious how long it takes

You have to split the cases so as long as a full build which is about 27 hours.