chopperchappie
Member
Hi
I am embarking on a ground up rebuild of a Ex-MoD 110 V8
For a number of reasons I'm keen to use an auto box and have a newish ZF 4HP 22
I am also looking to use rear discs because of an increased BHP output (target 250-300 ish)
So I have acquired an ex-Wolf rear Salisbury with discs, and hoping to secure this ZF box.
What I don't understand enough about is how I get the right ratios end to end?
I get the theory at a high level - e.g. Engine turns at 3000 rpm ratios applied wheels turn at xxxxrpm rolling radius is yyy cm for 285/16 tyres therefore in 1st gear speed will be zz mph at 3000 rpm
What I don't get is if the bits I have are correct to bolt together and produce that combo - for example I don't know what ratio the Salisbury diff is and I don't know what the ratios are in the ZF/transfer box
Also assuming the bits are ok I want to get the axle refurbished but can't find someone that is a Salisbury diff expert (seen JamesMartin mentioned ) so need to check it is ok ratio wise before I start
I'd like to do the Salisbury rebuild myself but think it's too complicated and I don't have the tools
I also don't get how I make the box work in terms of telling it to change gear/kick down and even which gear selectors I can use (I'd love something electronic like a RR Sport/Disco rather than a gear lever like a RR classic)
Thanks
CC
I am embarking on a ground up rebuild of a Ex-MoD 110 V8
For a number of reasons I'm keen to use an auto box and have a newish ZF 4HP 22
I am also looking to use rear discs because of an increased BHP output (target 250-300 ish)
So I have acquired an ex-Wolf rear Salisbury with discs, and hoping to secure this ZF box.
What I don't understand enough about is how I get the right ratios end to end?
I get the theory at a high level - e.g. Engine turns at 3000 rpm ratios applied wheels turn at xxxxrpm rolling radius is yyy cm for 285/16 tyres therefore in 1st gear speed will be zz mph at 3000 rpm
What I don't get is if the bits I have are correct to bolt together and produce that combo - for example I don't know what ratio the Salisbury diff is and I don't know what the ratios are in the ZF/transfer box
Also assuming the bits are ok I want to get the axle refurbished but can't find someone that is a Salisbury diff expert (seen JamesMartin mentioned ) so need to check it is ok ratio wise before I start
I'd like to do the Salisbury rebuild myself but think it's too complicated and I don't have the tools
I also don't get how I make the box work in terms of telling it to change gear/kick down and even which gear selectors I can use (I'd love something electronic like a RR Sport/Disco rather than a gear lever like a RR classic)
- So is there a simple test I can do on the axle to check axle ratio
- Who can refurb Salisbury
- What are the right ratios (and how can I get the right ones like by serial number of transfer box)
- What about the control of the auto box
- Anyone live near Hitchin that needs a project to help on
Thanks
CC