DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Welcome to the DeLorean Club Forum, this area is for general DeLorean chat

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby A Van » Mon May 02, 2011 7:48 pm

Phil Elmsley has also done a load of research into balljoints, he modified some Lotus Esprit joints to fit.

Hopefully Phil will chime in, as he has some good knowledge on this.

Another guy who has experienced failures and looked into it is John Dore, maybe he'll come in too.
Alistair V

Vin 11753 - B/Auto - Kuwait, painted black
Ex Vin 11766 - B/Auto - Dubai
Ex 11622, 6064

RIP Mike 'Bozzy' Bosworth 19/04/1969 - 31/12/2015


Official Spokesperson and Media Liaison Officer, and off road Buggy flipper
DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
User avatar
A Van
 
Posts: 7813
Joined: Fri May 29, 2009 6:33 pm
VIN #: 11753
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby Admin-bloke » Mon May 02, 2011 7:57 pm

Might be worthwhile investigating this sooner than later for a cross reference considering the circumstances.
Admin-bloke, "The D Whisperer"
Pie n Pint Northerner....
Vin #4068 - y'official "Mighty Auto" test car for Admin-bloke tuning.

https://www.justgiving.com/campnibble

Forum Founder [means I just installed it........] and Tech Help
DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
User avatar
Admin-bloke
 
Posts: 5300
Joined: Thu May 28, 2009 6:45 pm
VIN #: 4068
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby A Van » Mon May 02, 2011 7:59 pm

Well, I think DMCH will sort it for sure.
Alistair V

Vin 11753 - B/Auto - Kuwait, painted black
Ex Vin 11766 - B/Auto - Dubai
Ex 11622, 6064

RIP Mike 'Bozzy' Bosworth 19/04/1969 - 31/12/2015


Official Spokesperson and Media Liaison Officer, and off road Buggy flipper
DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
User avatar
A Van
 
Posts: 7813
Joined: Fri May 29, 2009 6:33 pm
VIN #: 11753
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby delorean12uk » Mon May 02, 2011 8:14 pm

it's all very well DMCH remanufacturing these ball joints to suit the Delorean, but DMCH cannot test these components as rigorously as Motor manufacturers can before they go out to the comsumer, naughty really!!!
Vin: Friday afternoon car, because the bastard thing likes to break all the time

Daily Maintenance a Certainty

Delorean Enthusiasts Love Official Reunions Especially At Norfolk


DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
User avatar
delorean12uk
 
Posts: 2314
Joined: Sun Jun 07, 2009 11:19 pm
Location: next door to Eubank in Ethics
VIN #: 4989

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby delorean12uk » Mon May 02, 2011 8:28 pm

Darren C wrote:Image

Image




Darren, are you sure that the blue colouration to the top of the ball joint casing isn't due to the heat treating process to 'case harden' the rim as to make this more wear resistant????
Vin: Friday afternoon car, because the bastard thing likes to break all the time

Daily Maintenance a Certainty

Delorean Enthusiasts Love Official Reunions Especially At Norfolk


DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
User avatar
delorean12uk
 
Posts: 2314
Joined: Sun Jun 07, 2009 11:19 pm
Location: next door to Eubank in Ethics
VIN #: 4989

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby Darren C » Mon May 02, 2011 9:35 pm

Interesting perspective.

Case hardening usually leaves the metal uniform in colour, and would be Very Very difficult to create localised blueing, so uniform around the diameter of the ball joint. You'd need to heat just the top half of the body and not the bottom. (Case hardening is usually done in an oven or crudely under a flame)
Also if you were to case harden you'd want it in the "cup" of the joint body so you would end up heating the whole thing evenly, and not just the top. Further you could also argue that if you case hardened you'd want it on the external spline too, making more of a case for whole uniform heating up of the joint.
For these reasons it can't be case hardening. Also the blueing is so perfect and neatly localised around the diameter of the ball joint it can only be from heat generated when machining the slots for the circlip, drilling the hole for the ball shaft and maybe machining the inside of the cup, without coolant (but to see the cup I'd have to cut it in half).
@classiccarguru1
Darren C
 
Posts: 1162
Joined: Wed Jul 22, 2009 8:55 pm
Location: In the garage, Emsworth. Hants
VIN #: 4532
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby bandit » Tue May 03, 2011 8:17 pm

Just checked mine the same way Darren they are bolloxed. They have done around 2500 miles & have had the split pins the 'correct' way since new. Have 'we' got any Arran?
User avatar
bandit
 
Posts: 2104
Joined: Tue Jul 14, 2009 11:22 am
Location: Derbys
VIN #: 7024
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby arranj » Tue May 03, 2011 8:46 pm

Well unfortunately due to Phil E's and Darren's complaints and observations about the SpecialTAuto ones (Hervey's quality control is not exactly brilliant) we decided it wasn't worth the hassle to stock them any more, plus we'd assumed (incorrectly) that we must have flushed out all the DMCH ones by now. When Kevin's DMCH ones failed last month it kinda highlighted that we were once again in the same situation that we'd tried to avoid all along by stocking certain parts - better to have something in stock that will get you through an MOT on next day delivery, than having the car in the garage waiting on Hervey. Kevin had to drive from MK to Manchester to get Dave Howarth's last set!

So, in short - no, you'll have to buy a set from Hervey: http://www.specialtauto.com/delorean-pa ... nsion.html - but it might be an idea for us to stock them on a non-advertised, no warranty and "we don't recommend you use them" kind of basis, just to help people out. I've got a set of Hervey ones and the quality doesn't bother me - sort of matches the rest of the car really! :dmcdoors:
Arran | DCUK 004 | VIN #1764 | Official DeLorean Club World Headquarters, Norfolk, UK

Das Webmeister
DeLorean Club

Image
User avatar
arranj
 
Posts: 7651
Joined: Fri May 29, 2009 6:19 pm
Location: DeLorean Club World Headquarters, Norfolk, UK
VIN #: 1764
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby Darren C » Tue May 03, 2011 8:48 pm

Hi Ju,

Glad I could be of service in posting a sure method of testing them for wear....may have saved your bacon!

As a point of interest when you get them out can you tell me if they are Blued and what state the grease is in.

Cheers
D
@classiccarguru1
Darren C
 
Posts: 1162
Joined: Wed Jul 22, 2009 8:55 pm
Location: In the garage, Emsworth. Hants
VIN #: 4532
Spaxed

Re: DMCH Lower ball joints IS THIS WHY THEY FAIL??????

Postby mnickels » Tue May 03, 2011 8:48 pm

May be worth giving Keith a shout Julian
Previous restoration progress on http://www.deloreaneurotec.co.uk/forum/ ... php?t=1069

Ireland Rep
DeLorean Club

The Future's Bright....
The Future's
DeLorean Club
mnickels
 
Posts: 960
Joined: Sun Jun 07, 2009 9:37 pm
VIN #: 2456
Spaxed

PreviousNext

Return to Welcome! ... General DeLorean chat

Who is online

Users browsing this forum: No registered users and 9 guests

About us

The DeLorean Club UK forum for European DeLorean owners and enthusiasts. The largest DeLorean forum in Europe.

Registration is FREE and all registered users get full access

cron