Brake servo?

[bennygoodman]

Should my GT6 MK3 have a brake servo, if it should I can't find it in the boxes of bits.

[Sheepy]

Quoted from the book "triumph spitfire and gt6" a guide to originality.

"the other key change, but which only occurred at KE20,000 was the standard figment of a girling 'power stop' brake servo to combat complaints of heavy brake pedal. Note the correct routing of the brake pipes and the T-piece added immediately in front of the servo.


So depending on your chassis number, then yes it should be.
Hope that helps.

[bennygoodman]

says ke4083 in the log book.

[Sheepy]

So according to the info from the book, it would have been an option then on yours.

If you can't find it in any of your boxes, then perhaps there was not one fitted) did you not take any photos when you got the car?
So you can leave it off, or fit one! Up to you!

[bennygoodman]

I bought the car as a stripped down shell with everything in boxes and bags so I didn't know what was with the car or not, now I am putting it back together I am finding missing bits as I go along.

[MadMitch82]

Any odd holes in the shelf near the master cylinders? (from where the bracket would attach)

[hypoid53]

Only the very last GT6's (Feb '73 to Nov '73), ie the non-rotoflex ones with sundym glass had servos fitted from the factory, and they only worked on the front brakes as the rear drums were larger and with the dreaded self-adjusters. Yours sounds like an early Mk3 (1970-71), should be rotoflex and does not have, or need, a servo. It is modern car usage that gets people so used to them that they feel everything should have them! ;D

[bennygoodman]

hypoid53 wrote:

Only the very last GT6's (Feb '73 to Nov '73), ie the non-rotoflex ones with sundym glass had servos fitted from the factory, and they only worked on the front brakes as the rear drums were larger and with the dreaded self-adjusters. Yours sounds like an early Mk3 (1970-71), should be rotoflex and does not have, or need, a servo. It is modern car usage that gets people so used to them that they feel everything should have them! ;D

Yes it is a very early one but still a 1972, I won't be fitting one then.

[cook1e]

The genuine workshop manual shows how to fit the factory kit to the earlier models. My 71 Rotoflex model had one fitted but Having had it reconditioned once and then failing again (admidtedly after about 50K miles/15 years of use) I replaced it with a Lockheed kit as it was cheaper to buy the Lockheed kit brand new than have the Girling Powerstop reconditioned. The Lockheed is also superior as it has a higher level of boost.

You don't actually need a servo, it wont improve stopping power but it reduces how hard you have to press the pedal and if you drive modern cars this can be advantageous as modern cars need a lot less pedal pressure and it can be a bit disconcerting when you apply the same pressure as you would on your modern and the brakes barely come on!


Pictures below show both types of servo as fitted to my car. Top picture with servo mounted longitudally is the original Girling Powerstop fitted as per the workshop manual instructions for the factory extra kit. Bottom Picture is the more modern Lockheed version, mounted crossways and at a slight angle.