p7676 wrote:
I bought 4 hydro displacers from Jenks they look fine .Is there any way to clean inside the displacers. The displacers are 21A1477 I am fitting them to my 1970 cooper S. I have made new bundy tube for the hydro lines it would be good to have all the system clean. Making the tube is not an easy job I used 5 lengths to make 2 correct hydro lines. P7676
21A1477 is embossed into the rubber on the top of every displacer ever made - probably the mould used originally.
The actual displacer identification number is normally stamped into the side of the metal body. Colours were also used for quick identification.
1970 Ss had 21A2012 front (1 silver band on flex hose and body) and 21A2014 rear (2 silver bands on hose and a silver band on body). These were the stiffest rated displacers for Ss. These tend to be hard to find today.
Late DeLuxe, all Ks and early Leylands used 21A2008 front and rear (with green band colour) which gave a softer/comfortable ride. The ride can be stiffened/improved by using competition bump stops and standard shock-absorbers added to the front suspension.
Regarding cleaning: I have tried to flush them but not very successfully - just fit them and pump up the suspension. Hydro fluid is an excellent rust prevention. Pump up the suspension and drain it quickly a few times. to flush out the gunk.
Concur about bending bundy tubing!