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Wanted Servo for BN4 has to be original 1957 or before any condition considered.

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Wrovert

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I am renovating a Austin Healey 100/6 Bn4 I would like to fit a break servo bit it has to be original 1957 or before. The car is being prepared so that I can enter the Italian 1000 Miele race so every thing has to be original or as could have been fitted up until 1957. I would be happy to refurbish ,or one already refurbished, a unit and will consider any condition.
 
BN4s did not have brake servos.
 
Yes I know but for 1000- Mile race you can have upgrades as long as they are age related. so the
keep the original front brake drums I was hoping to uprate the efficiency of the braking system. May be just to ambitious so I will stay with original setup.
Thanks for your reply though it was helpful.
 
An age related upgrade would be disc brakes.
 
I converted my 100 6 to disk brakes, it was a great improvement in braking power. I think it was an option available for the cars so would be period correct.
 
100S's had disc brakes. It is period correct.
 
thanks for your help and you are all right disc brakes on the front was an age related upgrade for the 1957 BN4
 
Early 3000 disc brakes (Girling) are a direct bolt on to a BN4. I believe the 100S disc brakes were Dunlop. And those are unobtainium.
 
Wrovert said:
I am renovating a Austin Healey 100/6 Bn4 I would like to fit a break servo bit it has to be original 1957 or before. The car is being prepared so that I can enter the Italian 1000 Miele race so every thing has to be original or as could have been fitted up until 1957. I would be happy to refurbish ,or one already refurbished, a unit and will consider any condition.
Click to expand...
I might have found my own answered to this? The BN1 seal is 2.3/4 inches for all other cars it states on the suppliers sites BN4 To BJ7 2,7/8 inch I measured mine and it is actually 2.3/4 inch so even though it a a BN4 car it still uses a BN1 Oil seal.
I know that the can was and early BN4 Longbridge built car, so may be this is the reason ?
 
John Turney said:
Four-wheel disc brakes were an option on the BN4. I believe they were the same as on the 100S.
Click to expand...
100-Six optional Dunlop disc brakes were not the same as the 100S. A quick way to recognise the difference is the 100-Six has a two bolt fixing on the calliper where a 100S has four.
 
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