Thread: Diff lockers and cost comparison

Originally Posted by Redback

Roverlands $2750 was the cheapest quote i got for the DII, which didn't include the new rear shaft and spacer to suit.

The Maxidrive and axles from Mal at Maxidrive was $2500 without fitting if i bought them myself.

Baz.

Hmmmm .... may be dearer for D2 than D1... I dunno ... i'd better go and dig out the invoice to make sure my memory is right.

Well just checked ..... $1831.50 for the Maxi Drive locker/axle kit .... fitting $656 ...sundries $12.50 ... total $2500
But that was August 2005 .. sounds like Mal's upped his price since.

Originally Posted by waynep

Hmmmm .... may be dearer for D2 than D1... I dunno ... i'd better go and dig out the invoice to make sure my memory is right.

Well just checked ..... $1831.50 for the Maxi Drive locker/axle kit .... fitting $656 ...sundries $12.50 ... total $2500
But that was August 2005 .. sounds like Mal's upped his price since.

I would say the price hike was around that time, cause that's when i got mine, i think you may have been lucky and Range Rov had old stock from Maxidrive.

Baz.

Originally Posted by Redback

I have a Maxidrive & axles in the rear.

Price for the kit from Maxidrive $2,500 fitted $3,700 at B Davis, could of had it supplied and fitted at Roverland for $2750 but the drive down and back + accomadation would have made it more.

This was the cheapest i could find in Sydney.

How does it work, well it's good if i remember to use it.

George130, is your Maxi differant, the reason i ask is i thought they were vacuum operated not air, mine works off the aircon pump.

Baz.

No mine is vacuum operated. I snapped the the T piece in the brake line where they took the feed to the locker.

Originally Posted by isuzurover

Maxi-Drive are designed to be vacuum operated, but can be air operated just by switching the pipes around.

I have no vacuum system on my IIA, so mine is operated by an on-board (air con) compressor. The supply for the locker is regulated to 15psi, as Mal said that is the equivalent vacuum pressure, and any higher than 20psi would bend the actuator fork.

All internal combustion engines have a vacuum system just diesels produce too much for things like boosters so they run a vac pump normally on the alternator on most cars but on the side of the motor on Tdi's.

Air con compressors unless significantly modified are not a reliable compressor as they rely on oil passing through with the gas to lubricate them.

I don't see any reason that running comp air for the maxi's instead of vacuum would be a problem, not a bad idea actually.

Has any one tried Lokka or Lock right or the like, I think they are a bit like a detroit but a little less aggressive and expensive.

Also does anyone know if they make them for a disco 1?

Originally Posted by mcrover

All internal combustion engines have a vacuum system just diesels produce too much for things like boosters so they run a vac pump normally on the alternator on most cars but on the side of the motor on Tdi's.

Air con compressors unless significantly modified are not a reliable compressor as they rely on oil passing through with the gas to lubricate them.

I don't see any reason that running comp air for the maxi's instead of vacuum would be a problem, not a bad idea actually.

Most diesel engines produce far too little vacuum to be effective for brake boosters etc, that's why they have vacuum pumps. Tdis especially spend much of their time on boost, producing positive manifold pressure, not vacuum.

Air con compressors do make excellent on board air systems, the mods are straightforward and pretty well documented, finding the spare room in the engine bay is likely to be the biggest challenge.

As has been mentioned before, Maxidrives can be operated on low air pressure rather than vacuum, but on anything like the 80 odd psi that ARBs use will result in an expensive bill from Maxidrive

Paul

Originally Posted by Defender200Tdi

Most diesel engines produce far too little vacuum to be effective for brake boosters etc, that's why they have vacuum pumps. Tdis especially spend much of their time on boost, producing positive manifold pressure, not vacuum.

Air con compressors do make excellent on board air systems, the mods are straightforward and pretty well documented, finding the spare room in the engine bay is likely to be the biggest challenge.

As has been mentioned before, Maxidrives can be operated on low air pressure rather than vacuum, but on anything like the 80 odd psi that ARBs use will result in an expensive bill from Maxidrive

Paul

I was about to write the same thing

Originally Posted by mcrover

All internal combustion engines have a vacuum system just diesels produce too much for things like boosters so they run a vac pump normally on the alternator on most cars but on the side of the motor on Tdi's.

Most diesels produce very little manifold vacuum as the don't have a throttle butterfly. The throttle butterfly is what causes the pressure drop - pistons going down with inlet valve open sucks, butterfly prevents air from entering, therefore lower pressure (vacuum) is the result. No butterfly, no airflow impediment, no vacuum.