[Rovernet] SD1 Rover brake servo compatibility

[Ben Saunders]

What gets me is that the 67 TC 2000 had the best braking system of all 
other normally marketed cars in the world and did not have that stupid 
valve in it. I wanted to do a similar system in a P6 3500S I had but 
ended up trading it off for some other Rovers. I did find out that the 
mount for the AC parts on the left inner fender of the P6 is a mirror of 
the right mount for the vacuum booster. I had planned to move the 
booster on the right to the left and find a slightly smaller booster to 
mount on the right for the rear brakes and use the same set up as the 
2000 TC NADA. which had a shorter braking distance of 30 feet (two car 
lengths) than the 3500. I was going to use the same TC 2000 brake 
cylinders on each booster. I found the problem with the 3500 system is 
the long distance natural rubber vacuum lines to the servo that in time 
would cause lots of problems. Sorry I did not get to do the system.

On 12/6/20 2:55 PM, Glen R Wilson via Rovernet wrote:
> Ben, that sounds like good advice to me. It's not rocket science to 
> someone who understands brakes and the cost of a custom installation 
> might be less than a bespoke NIS part.
>
> The other thing about SD1s to watch out for is that the proportioning 
> valve is designed so that the back brakes do next to nothing. I've 
> seen people post about taking the proportioning valve out, but would 
> not recommend it if you don't want to be driving backwards. I know it 
> was a good idea if you were building a race car, but not a driver.
>
> On 12/6/20 12:40 PM, Ben Saunders via Rovernet wrote:
>>
>> For what it is worth, having owned and driven Rover SD1's a lot, I 
>> found that the braking system was poor at best especially in the 
>> rain. When the front calipers got wet you were driving without brakes 
>> at all and yes my vacuum servo was working fine, just inadequate. I 
>> installed a Chevy servo that was larger in diameter and the brakes 
>> worked in the hardest rain so end of problem. This was done before 
>> the tandem servos were available so you might want to fry one of them.
>>
>> Ben Saunders
>>
>> PS: anybody interested in a 1960 Rover P4 100 let me know.
>>
>
>
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