Ausmini
It is currently Thu Mar 28, 2024 8:50 pm

All times are UTC + 10 hours




Post new topic Reply to topic  [ 51 posts ]  Go to page 1, 2, 3, 4  Next
Author Message
PostPosted: Mon May 29, 2017 3:07 pm 
Offline
998cc
998cc

Joined: Mon Dec 19, 2016 8:38 pm
Posts: 607
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


Top
 Profile  
 
PostPosted: Mon May 29, 2017 6:08 pm 
Offline
Yay For Hay!
User avatar

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15861
Location: Wodonga - Vic/NSW border
There's a great thread somewhere about cleaning them for storage, basically make a frame so you can pressurise them on the bench, then pump & release over and over till no more crap comes out

_________________
did I tell you that I won a trophy?


Top
 Profile  
 
PostPosted: Mon May 29, 2017 8:22 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri Oct 20, 2006 5:03 pm
Posts: 2727
Location: Out in the shed cleaning up my own mess.
I flushed mine out with metho. Took a few fills to get 'em clean. Probably only necessary if the old fluid has been contaminated with rust.

_________________
1967 Cooper S - ready for reg.
1965 Cooper S shell - all painted up, ready for fit out.
1969 Cooper S Mk2. Engine reco WIP
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.


Top
 Profile  
 
PostPosted: Mon May 29, 2017 8:52 pm 
Offline
848cc
848cc
User avatar

Joined: Tue Jun 14, 2011 12:21 am
Posts: 120
Location: Sydney - Ku-ring-gai
This is the most comprehensive post I have found, it answered all my questions.
ausmini
http://www.ausmini.com/forums/

Hydrolastosity
viewtopic.php?f=2&t=83658

_________________
1970 Mk2
1968 Mk1 project


Top
 Profile  
 
PostPosted: Tue May 30, 2017 8:29 pm 
Offline
1275cc
1275cc

Joined: Sat Feb 09, 2013 5:44 pm
Posts: 2176
Location: Camden
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!


Top
 Profile  
 
PostPosted: Tue May 30, 2017 11:09 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri Oct 20, 2006 5:03 pm
Posts: 2727
Location: Out in the shed cleaning up my own mess.
Bill B wrote:
Hydro fluid is an excellent rust prevention.


In my experience all hydro fluids are not created equal. I have seen fluid that looks like, and has the viscosity of, lime cordial.

I now use the Nulon concentrated cooling system stuff.

_________________
1967 Cooper S - ready for reg.
1965 Cooper S shell - all painted up, ready for fit out.
1969 Cooper S Mk2. Engine reco WIP
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.


Top
 Profile  
 
PostPosted: Wed May 31, 2017 8:19 am 
Offline
1360cc
1360cc
User avatar

Joined: Sun Apr 11, 2004 11:32 am
Posts: 12390
Location: Sthrn HiLoLands, NSW, Australia
Anyone ever used a "flooood" to flush each side of the system? Metho? bulk Carby Cleaner! Kero? (might leave a residue)

_________________
"Show me the Mini!"


Top
 Profile  
 
PostPosted: Wed May 31, 2017 8:48 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39621
Location: near Baulkham Hills, NSW
I would keep kero well away from the internals of rubber hydro displacers...

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


Top
 Profile  
 
PostPosted: Wed May 31, 2017 9:30 am 
Offline
1360cc
1360cc
User avatar

Joined: Sun Apr 11, 2004 11:32 am
Posts: 12390
Location: Sthrn HiLoLands, NSW, Australia
drmini in aust wrote:
I would keep kero well away from the internals of rubber hydro displacers...


Yep...its a cutting agent as well :roll:

https://en.wikipedia.org/wiki/Cutting_fluid#Liquids

Isopropyl Alcohol :?:

https://www.ebay.com.au/p/?iid=171801081359&&&chn=ps

_________________
"Show me the Mini!"


Top
 Profile  
 
PostPosted: Wed May 31, 2017 2:11 pm 
Offline
1360cc
1360cc
User avatar

Joined: Sun Apr 11, 2004 11:32 am
Posts: 12390
Location: Sthrn HiLoLands, NSW, Australia
Cleaning Vinegar :?: :!: :shock: :lol:

_________________
"Show me the Mini!"


Top
 Profile  
 
PostPosted: Thu Jun 01, 2017 3:47 pm 
Offline
848cc
848cc

Joined: Sat Oct 01, 2016 10:55 am
Posts: 209
Location: Melbourne. VIC
Bit off topic but is there much of a difference in stiffness between a Cooper 21A2008 hydro unit
and a Mk2 Cooper S 21A2012 hydro unit??


Top
 Profile  
 
PostPosted: Fri Jun 02, 2017 12:34 am 
Offline
1275cc
1275cc
User avatar

Joined: Fri Oct 20, 2006 5:03 pm
Posts: 2727
Location: Out in the shed cleaning up my own mess.
Read Bill's comments. Says it all really.

_________________
1967 Cooper S - ready for reg.
1965 Cooper S shell - all painted up, ready for fit out.
1969 Cooper S Mk2. Engine reco WIP
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.


Top
 Profile  
 
PostPosted: Fri Jun 02, 2017 12:43 am 
Offline
848cc
848cc

Joined: Sat Oct 01, 2016 10:55 am
Posts: 209
Location: Melbourne. VIC
AEG163job wrote:
Read Bill's comments. Says it all really.



I did read that and should have said it differently. I was more referring to is it very noticeable in ride/feel and handling between the two when in use?

If i need to replace one of my cooper S units (21A2012) for a standard unit (21A2008) due to Cooper S units being hard to find.


Top
 Profile  
 
PostPosted: Fri Jun 02, 2017 6:18 am 
Offline
848cc
848cc
User avatar

Joined: Mon Nov 02, 2015 12:05 pm
Posts: 425
Location: Sunshine Coast, QLD
when my front bag blew and i had to replace it, i built a vacuum system and pump
Refilled the system
Went for a drive
returned home and let the fluid out or more like mud
I did this procedure several times until the fluid looked clean coming out
Might even do it again soon to see how its all looks
And i replaced my fronts with Mini K bags and added shocks and the car feels great

_________________
1970 MK2 Cooper S


Top
 Profile  
 
PostPosted: Fri Jun 02, 2017 6:28 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39621
Location: near Baulkham Hills, NSW
I have S/GT bags in front of my 1970 car and stock bags in back. Lillee has stock bags all round in his K. Both cars ride and handle the same with front shocks and comp rear bumpstops. Both when running A008s.
(Edit) If you have 2 of each I would put S ones in front. Car sits more level.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 51 posts ]  Go to page 1, 2, 3, 4  Next

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 30 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.