Changin my diff today from 2.92 to 3.38

[Pho3niX90]

The ring-gear should just bolt off from the whole "pumpkin" where the spider gears, and bearings are located

Sadly I dont trust myself to do this.
I have asked them if they would rather do this for me, but they refused.

So the ETA for the diff is Tuesday

Sent from my GT-N7105 using Tapatalk 4 Beta

 

[Fordkoppie]

If they don't even trust themselves with something so basic, you should immediately take your diff elsewhere

 

[Pfw28]

If they don't even trust themselves with something so basic, you should immediately take your diff elsewhere

+1

 

[Pho3niX90]

If they don't even trust themselves with something so basic, you should immediately take your diff elsewhere

Sadly I gave them the go ahead to order the parts so even if I wanted to I still need to pay for everything.

I think the main reason for them refusing is because it will mean that they don;t make any cash from parts and no warranty

 

[Pho3niX90]

So guys, you can probably hear in my voice :fencelook: that I am excited, shes is running again, got the diff back today and quickly fitted it. Everything is perfect again, total price, original cost 3500 + 90 oil + 550 flatbed + 3990 repairs + 90 oil. Once again overspent, shes in the garage now and needs a good wash.

Havent gunned it yet, so not sure of the performance increase

Sent from my GT-N7105 using Tapatalk 4 Beta

 

[Flash-Gordon]

glad she's running again! Congrats! :bravo:raise:

 

[Sankekur]

Glad to hear you got it sorted.

Havent gunned it yet, so not sure of the performance increase

Unfortunately you will find that it doesn't give any performance increase, the diff only exchanges engine speed for torque in equal amounts, and performance (ie power) is dependent on the product of engine speed and torque.

 

[Tareeq]

Glad you got your car sorted bud :thumbs:
Enjoy her :rollsmile:

 

[SP33DYV]

Glad you got it sorted. :thumbs:

 

[Fordkoppie]

Glad to hear you got it sorted.

Havent gunned it yet, so not sure of the performance increase

Unfortunately you will find that it doesn't give any performance increase, the diff only exchanges engine speed for torque in equal amounts, and performance (ie power) is dependent on the product of engine speed and torque.

+1

It will however feel faster which is all that matters

 

[Yuben]

:thumbs:

 

[sclass]

Glad to hear you got it sorted.

Havent gunned it yet, so not sure of the performance increase

Unfortunately you will find that it doesn't give any performance increase, the diff only exchanges engine speed for torque in equal amounts, and performance (ie power) is dependent on the product of engine speed and torque.

+1

It will however feel faster which is all that matters

So no actual gains? What about in-gear acceleration times, shouldn't these improve?

 

[moranor@axis]

there are gains depending on what ratio and what car...

 

[applehero]

By increasing the final drive ratio, there will be an increase in wheel torque. However the torque is available at lower speed.

Effectively what Sank means is that there is no power increase.

Power=Torque*Engine Speed

I can do a pretty graph if I can get some technical info on the car

 

[AdiS]

Glad to hear you got it sorted.

Havent gunned it yet, so not sure of the performance increase

Unfortunately you will find that it doesn't give any performance increase, the diff only exchanges engine speed for torque in equal amounts, and performance (ie power) is dependent on the product of engine speed and torque.

+1

It will however feel faster which is all that matters

So no actual gains? What about in-gear acceleration times, shouldn't these improve?

I was also hoping that someone could clarify exactly what the gains are and aren't. I get that there is no increase in resultant power, but what about the effects on acceleration?

 

[sclass]

By increasing the final drive ratio, there will be an increase in wheel torque. However the torque is available at lower speed.

Effectively what Sank means is that there is no power increase.

Power=Torque*Engine Speed

I can do a pretty graph if I can get some technical info on the car

So effectively you get better use of the available "power", at lower speeds?

 

[Pho3niX90]

Thanks guys :thumbs:

Well I have to say thus far I am really enjoying this mod, previously the wheels never chirped (Tyres are basically still brand new and grips like a bitch), but now she chirps like a mockingbird.

The acceleration definitely increased. and 100 to 160 has increased insanely (only tested i 6th).

 

[Andy1GP]

Nice one Shaun! It's done now at long last We can have a rematch when I'm back :thumbs:

 

[sunnyj]

So guys, you can probably hear in my voice :fencelook: that I am excited, shes is running again, got the diff back today and quickly fitted it. Everything is perfect again, total price, original cost 3500 + 90 oil + 550 flatbed + 3990 repairs + 90 oil. Once again overspent, shes in the garage now and needs a good wash.

Havent gunned it yet, so not sure of the performance increase

Sent from my GT-N7105 using Tapatalk 4 Beta

Sorry to hear of the problems but glad to hear you got it sorted. :thumbs:

 

[applehero]

By increasing the final drive ratio, there will be an increase in wheel torque. However the torque is available at lower speed.

Effectively what Sank means is that there is no power increase.

Power=Torque*Engine Speed

I can do a pretty graph if I can get some technical info on the car

So effectively you get better use of the available "power", at lower speeds?

If by better use you mean higher acceleration at lower speed, then yes...

The graph* below shows the difference that changing the final drive ratio makes.

The blue line is the production specification car. The graph is showing Acceleration versus Speed. The green line shows the effect of increasing the final drive ratio.

As can be seen, a larger acceleration is seen earlier in the vehicle speed. However the maximum theoretical speed will be lower.

*The graph only considers supply force, where the lines drop to zero is the maximum geared speed that can be achieved. The acceleration is a theoretical prediction with no allowance for traction limits.