Lotus Elan and Lotus Elan Plus 2 Forums

hello lotusians ,
On the Elan Sprint LHD I have a "duo" brake master cylinder, the one with the reservoir attached from below.
It is defective and has the reference G646 765 970 32 I find it in the parts book, page JD= Parts n° 2.
I can't find any! except the gasket kit but incomplete!
So can we swap good dealer addresses in Girling.
Thanks for sharing
geni

Hello Gérard,

would that be a 0.75" bore diameter (as for a Plus2 with booster) by any chance ? you may then find your reference under Girling 64676597 ...

Hello,
It seems to me that the gasket kit fits the Girling SP2610? what do you think?
I have to say that my Sprint doesn't have a servo.
So if you have any good addresses in Girling, please share.
geni

Hello Gérard,

first you should try to make sure what the exact type of your master cylinder is (you can then find out the bore from the internet without taking it out and measuring) - if unsure you should take it out, dismantle it, inspect it (making sure it's not corroded to a point making it unsafe for road use), and measure it to order the proper dimension rubber kit... For instance I believe SP2610 would be for 0.70" bore while the MS number discussed prior was 0.75" diameter...

Hello,

I have dismantled my master cylinder, and it corresponds to 0.7" = 11/16 or 17.80m/m .
But where do you find the info to know the reference to the master cylinder number indicated?
I do not know all these details, knows why I ask this question.
geni

Hello Gérard,

short of a photo showing the cast number, I just tried to guess from your previous post :

[quote="geni"
It is defective and has the reference G646 765 970 32 I find it in the parts book, page JD= Parts n° 2.
I can't find any!
geni[/quote]

then searched on the internet for Girling master cylinder numbers...

if you aready have the master cylinder out of the car, once checked for corrosion etc it should be relatively easy to order seals according to the dimension as measured (if stock no servo should be smaller than 0.75" and 64676597 does point to 0.70" bore so the kit you mentionned would fit )

Girling SP2610 is the right service kit for a 0.700" Dual circuit master cylinder.