Diff Query

[tractorjames]

Does anybody know if I can fit a 3.45 crown wheel and pinion into my existing stag casing and diff rather than swapping the whole lot?

Also, has anyone got a 3.45 diff for sale?

Many Thanks,
James

[stagwingnut]

When I had my diff rebuilt by the well respected diff reconditioners in leatherhead surrey , think they are called Hardy Endineering , asked me if I wanted a 3.45 crown wheel put in ,which suggests u can do what u are asking !! Regards Graham

[Motorsport Micky]

Yes, I'm running a 3.45 diff, takes the edge off the acceleration and gives another couple of mpg on the fuel, with Strombergs I'm returning near enough the 30mpg depending upon the terrain (and if I get tempted).

Micky

[tractorjames]

Sounds good, just wasn't sure if the CW&P was interchangeable.

Thanks Graham and Micky

[Mike Stevens]

I think it will fit - the Stag casing is a little bit bigger than the saloon one so that should help.

Remember that fitting any different CWP into a casing will require both crown wheel and pinion to be shimmed to get the correct mesh.

Cheers,
Mike.

[mole42]

The part numbers are the same for the 3.7 CW/P whether it's Stag or 2000 - so it's a fair bet that the 3.45 will go straight in.

[tractorjames]

Thanks for the replies, sounds promising. Id rather keep the correct housing on the car. I believe heavier diff too? If that's correct then it seems advantageous to fit just the crown and pinion.

James

[mole42]

The other thing to watch is that you get a CW/P for the correct age of diff - the earlier ones were shim adjusted and have a castellated nut on the pinion input, the later were adjusted with a collapsible spacer and have a Nyloc nut on the input. The two types are not interchangeable, the pinion bearings are different and have different sized outers.