Golf R -v- Golf GTI

[dave_r]

Have your thought about putting a small hole in the sump, so you can get the true GTI experience of wondering where all your oil is going?

They might be onto something though, probably save a good 5kg over the front axles by running dry

[Corey_R]

They might be onto something though, probably save a good 5kg over the front axles by running dry

Actually, it's strategy that occurs in some forms of motor racing all the time. Not filling up the motor, gearbox, and diff oil completely. Not only do you save weight, but you reduce the drive train loss as the gears/whatever are "slapping" the oil bath rather than pushing through it (think of it as the difference between moving your arm touching the surface of a pool compared to underwater in a pool.

Of course, it's a risky thing to do, cause fill it slightly too low, and the parts aren't getting enough lubrication. Thus, it's mostly utilised only in qualification...

[team_v]

Actually, it's strategy that occurs in some forms of motor racing all the time. Not filling up the motor, gearbox, and diff oil completely. Not only do you save weight, but you reduce the drive train loss as the gears/whatever are "slapping" the oil bath rather than pushing through it (think of it as the difference between moving your arm touching the surface of a pool compared to underwater in a pool.

Of course, it's a risky thing to do, cause fill it slightly too low, and the parts aren't getting enough lubrication. Thus, it's mostly utilised only in qualification...

Same reason why you only fill up to 1/4 of a tank for the drag strip, easy 40kg weight saving there.

[adzy]

Actually, it's strategy that occurs in some forms of motor racing all the time. Not filling up the motor, gearbox, and diff oil completely. Not only do you save weight, but you reduce the drive train loss as the gears/whatever are "slapping" the oil bath rather than pushing through it (think of it as the difference between moving your arm touching the surface of a pool compared to underwater in a pool.

Of course, it's a risky thing to do, cause fill it slightly too low, and the parts aren't getting enough lubrication. Thus, it's mostly utilised only in qualification...

..... mainly in differentials and gearboxes as dry sump set ups are pretty common.

[orkers]

Have your thought about putting a small hole in the sump, so you can get the true GTI experience of wondering where all your oil is going?

Don't forget to prod the rattlesnake on the passenger seat when taking off to simulate the actuator rod...

[adzy]

Don't forget to prod the rattlesnake on the passenger seat when taking off to simulate the actuator rod...

Here we go lol.....

[ethosguy]

wow...a dry sump - no oil at all...imagine how much weight and wastefull splashing that'd save.
Spare me, please.
kids say the darndest things

[adzy]

wow...a dry sump - no oil at all...imagine how much weight and wastefull splashing that'd save.
Spare me, please.
kids say the darndest things

Sorry, what are you on about?

[sh|tbmxrider]

wow...a dry sump - no oil at all...imagine how much weight and wastefull splashing that'd save.
Spare me, please.
kids say the darndest things

Really?

You can't be that stupid....

[ethosguy]

Really?

You can't be that stupid....

Really, dry sump, don't you use light weight graphite powder in place of oil???

ummm, no! Well not usually anyway, I hope.

Nor would I suggest to run quali laps with low oil level to save weight and reduce oil churning power losses as an earlier post suggested by the inuendo'd 'kid'.

Competition work usually sees an increase to oil volume to protect against so many heavy use issues I couldn't help myself.
Too subtle it seems. Oh well. next time, maybe?