Leon Cupra R25
- Thread starter POPOV
- Start date
Differential
At the very end of this project I'll AWD convert to ensure grip is not an issue. The search for an AWD differential was initiated and I ended up ordering the Wavetrac version.
The concept of how the Wavetrac operates and the options of adjusting how aggressively the diff transfers torque from the wheel with less traction to the wheel where the determining reasons for selecting it.
More about the Wavetrac technology can be found in the attached links.
http://www.wavetrac.net/technical.htm
https://www.youtube.com/watch?v=ElaMcoO_drg
By fitting a AWD differential I'm able to mount the angle drive and convert the 02Q gearbox to a AWD version.
Alternatively I could have purchased a used 02Q AWD gearbox but it would not be logical as I already have a 02Q gearbox in good condition.
At the very end of this project I'll AWD convert to ensure grip is not an issue. The search for an AWD differential was initiated and I ended up ordering the Wavetrac version.
The concept of how the Wavetrac operates and the options of adjusting how aggressively the diff transfers torque from the wheel with less traction to the wheel where the determining reasons for selecting it.
More about the Wavetrac technology can be found in the attached links.
http://www.wavetrac.net/technical.htm
https://www.youtube.com/watch?v=ElaMcoO_drg
By fitting a AWD differential I'm able to mount the angle drive and convert the 02Q gearbox to a AWD version.
Alternatively I could have purchased a used 02Q AWD gearbox but it would not be logical as I already have a 02Q gearbox in good condition.
Last edited:
Update
Some of you might have been confused by my "AWD differential" statement, what is a AWD differential? Reason for me naming it an "AWD differential" is because it will enable me to fit the angle drive to the gearbox.
The outgoing axle from the differential connects to the angle drive and then to the CV shaft. The "2WD differential" has a different outgoing axle and spline design, thus not compatible with the angle drive.
At the moment the engine is being prepared for the jump back into the engine bay. In coming posts I'll share some pictures of the event.
I've been working on connecting all the electrical switches and sensors and now have it almost fully worked out. Not a plug and play task as switches and sensors are not wired the same way.
Comparing electrical schematics and finding the correct wires has been time consuming. Schematics are great assistance but unfortunately the wire color coding is not always correct, go figure...
Some of you might have been confused by my "AWD differential" statement, what is a AWD differential? Reason for me naming it an "AWD differential" is because it will enable me to fit the angle drive to the gearbox.
The outgoing axle from the differential connects to the angle drive and then to the CV shaft. The "2WD differential" has a different outgoing axle and spline design, thus not compatible with the angle drive.
At the moment the engine is being prepared for the jump back into the engine bay. In coming posts I'll share some pictures of the event.
I've been working on connecting all the electrical switches and sensors and now have it almost fully worked out. Not a plug and play task as switches and sensors are not wired the same way.
Comparing electrical schematics and finding the correct wires has been time consuming. Schematics are great assistance but unfortunately the wire color coding is not always correct, go figure...
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Engine progress
My engine mechanic has been taking pictures of the build process but I haven't manged to get them yet.
I manged to snap some pictures myself during the process.
Engine coolant feed and oil return being machined into the block. For details read my post regarding the engine block: http://www.seatcupra.net/forums/showpost.php?p=4632595&postcount=29
Manual balancing and check of the crank
Engine in almost ready state
My engine mechanic has been taking pictures of the build process but I haven't manged to get them yet.
I manged to snap some pictures myself during the process.
Engine coolant feed and oil return being machined into the block. For details read my post regarding the engine block: http://www.seatcupra.net/forums/showpost.php?p=4632595&postcount=29
Manual balancing and check of the crank
Engine in almost ready state
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Fliuds
Motul fluids ready to go in!
Motul fluids ready to go in!
- Motul 300V Power 5W-40
The 2.5 TFSI engine absorbs about 7 liter of engine oil
- Motul Gear 300 75W-90
Gearbox oil. Recommended by my differential supplier, Wavetrac.
- Motul RBF 600 Racing Brake Fluid
Dry boiling point 312 °C / 594 °F
Wet boiling point 205 °C / 401 °F
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