Lotus Elan and Lotus Elan Plus 2 Forums

Sorry forgot to add, reaction piston, any tips on how you get this out, do i need to change it.

thanks

When I overhauled one a few years ago the reaction valve was also stuck, I got it out by screwing a tap into it and pulling it out.
They do get gummed up so I would recommend taking it out.
I presume you have read this link which describes how to rebuild a Lockheed servo.
http://www.triumph-spitfire.nl/servoimages.htm

I've just had a look at the Lockheed servo rebuild link above (which I'd never seen before, good information)

I only became aware of the difference between the 1.9:1 and 3:1 servos when one of the usual suspects supplied a 1.9 servo replacement for the 3:1 in the Plus 2 a long time back. Took me a while to find out why my brakes had gotten worse !

I was curious to see at the end of the item a table listing for a 4.25 ratio, LR 18230.

Has any experience of this version, I see it's available from Delphi.

What vehicles was it fitted in ?

Foxie wrote:What vehicles was it fitted in ?:)

This link shows an LR18230 for sale, at the bottom it lists an OEM number for a Rover but does not show which model.
https://www.autodoc.co.uk/delphi/1764040

Brian,

Thanks for that, but I am looking to hear from people who may have fitted the 4.25 servo, most likely in a Plus 2.

Delphi have it priced at ?272 incl vat, but out of stock at the moment.

I have emailed them re availability.

By the way, I have replaced the original Lotus brakes with the Spyder supplied Ford Sierra/Zetec kit, which has Willwood four pots/vented discs in front.

Be careful if the Brakes are too light or you will lock the front wheels easy on a wet road and slide into the car in front of you
Alan

alan.barker wrote:Be careful if the Brakes are too light or you will lock the front wheels easy on a wet road and slide into the car in front of you
Alan

I need to be able to lock my front wheels (Yokohama A048s) on dry tarmac at max pedal pressure. That means I have 100% availability of my brakes' capability. I can't do that with my present set-up.

Braking in the wet I can manage. ( As well as not tail-gating the car in front )

Foxie wrote:I've just had a look at the Lockheed servo rebuild link above (which I'd never seen before, good information)

I only became aware of the difference between the 1.9:1 and 3:1 servos when one of the usual suspects supplied a 1.9 servo replacement for the 3:1 in the Plus 2 a long time back. Took me a while to find out why my brakes had gotten worse !

I was curious to see at the end of the item a table listing for a 4.25 ratio, LR 18230.

Has any experience of this version, I see it's available from Delphi.

What vehicles was it fitted in ?

Fitted one in my Plus2 for a very short time...it was like fitting an on/off switch on the brakes..

John

john.p.clegg wrote:
Fitted one in my Plus2 for a very short time...it was like fitting an on/off switch on the brakes..

John

Thanks for that, John.

You have a certain genius for putting the matter into a nutshell !