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Garage => Mechanicals => Topic started by: WGB on 29 September 2007, 09:28 AM

Title: 6.9 Plug Leads
Post by: WGB on 29 September 2007, 09:28 AM
Does anyone know if there is a difference between specification or cable lengths between the 450 and the 6.9 motors or whether they are interchangeable?

Bill
Title: Re: 6.9 Plug Leads
Post by: CraigS on 29 September 2007, 09:57 AM
I don't know about the length, as these are not indicated, but 450 SEL has a 117 part number and 6.9's have a 100 part number. If they were interchangeable, they would likely have the same part number.
Title: Re: 6.9 Plug Leads
Post by: WGB on 29 September 2007, 06:14 PM
Thanks guys,

One lead is cracked in the insulation and I will temporarily replace it with a 450 lead and measure the resistance on all the rest.

Bill
Title: Re: 6.9 Plug Leads
Post by: Bandolero on 29 September 2007, 06:27 PM
I had an old set of 6.9 leads on my 6.9, so I changed to a 450 Bosch set that fitted. The #4 is a little short but it will fit. (I think the new set was probably a little longer than an original 450 set).

There was no difference in performance. These 450 sets had 4ohms resistors.

Then the other day I received my new set of 6.9 leads (from AutohausAZ) with the 5ohm resistors and have now fitted them.

Again no difference in performance. (But at least the leads are longer.)
Title: Re: 6.9 Plug Leads
Post by: WGB on 29 September 2007, 07:00 PM
Thanks Bandalero for that information.

Bill

Title: Re: 6.9 Plug Leads
Post by: Bandolero on 29 September 2007, 07:41 PM
There is a guy in Melbourne that sells 280 plug leads (Bosch) on eBay.
If you ask him, he will sell you the 450 leads as well.
The 280s were about AU$100 and the 450s were about AU$130.
Title: Re: 6.9 Plug Leads
Post by: oscar on 30 September 2007, 02:41 AM
Interesting, the bosch ones I got for the 350 which are 450 ones are 1kΩ.  The original Beru set I had were 1kΩ though one stand in replacement had no markings and another had an orange suppressor with 5kΩ stamped on it.  My old rotor was 5kΩ too.

WGB, the Ω rating should be stamped on the suppressor.  Here's some suppressor markings I recorded to see if they match any of yours, 450 and 6.9.  Although the individual sets may have different part numbers on account of lead lenght and number, I've wondered whether they may share the same suppressors.  Later, I'll post the 280 ones I have too.

Original on the 350
BERU
W Germany
ZLE 121
1kΩ

The orange coloured suppressor
BERU
Germany
BAL 4/14/5p
It doesn't specifically mention resistance.

The single replacement that looked like the original apart from different suppressor markings and resistance.
BERU
W Germany
W BAK 4/14/5
5kΩ

Current Bosch ones
Bosch
K4
0356 301022
1kΩ
Title: Re: 6.9 Plug Leads
Post by: koan on 30 September 2007, 02:52 AM

Suppressors? My 6.9 leads don't have any, they appear to be the usual resistive leads.

They are a bit old and dirty but I know they are OK, I decided that when a dealership said a set would cost around $2000.

Non dealers have the big plug ends, distributor ends and resistive wire, a set could be made up for much less.

koan
Title: Re: 6.9 Plug Leads
Post by: CraigS on 30 September 2007, 04:33 AM
Not for 6.9's but useful for others, and reasonably priced - well, sort of compared to the dealer price.

http://cgi.ebay.com.au/Mercedes-Spark-Plug-Leads-Set-Bosch-NEW-for-M110_W0QQitemZ140163391069QQihZ004QQcategoryZ72454QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Title: Re: 6.9 Plug Leads
Post by: Bandolero on 30 September 2007, 04:54 AM
Yes, this is the guy that I bought my 280 plug leads from.
I also bought a set of 450 leads that just fitted my 6.9.
Since then I bought some from AutohausAZ but I didn't notice any difference in performance.
If you ask him, he will sell you a set for a 450 for about $130.
Title: Re: 6.9 Plug Leads
Post by: WGB on 30 September 2007, 07:35 AM
Thanks Guys,

I have replaced the one damaged lead temporarily with a bright blue 32 inch "top-gun" one ($5) and have ordered a new set from Autohausaz at USD$102 plus $35 postage.

The picture on their site shows them in the same protective plastic sleeves as the (presumably) originals that were on my car with cylinder numberings. We'll see what arrives. The original cables, sleeves and cable clips are very brittle and break up on the slightest movement.

Given that Chris recently spent $2,000 on a full service and that he had had some rough running problems the lead with exposed copper cables and wrapped in red (and somewhat obvious) tape (which did not actually cover the exposed copper) is an indictment on the shop that did the service.

Are the plastic cable holders on the cam-covers still available as they are brittle and I have already broken one.

They appear superficially the same as the ones on the 117 motor but positioned differently. I will check my EPC later and see if they are still listed and what their numbers are.

Bill
Title: Re: 6.9 Plug Leads
Post by: CraigS on 30 September 2007, 07:57 AM
There is quite a story behind these. The short answer is NO. They have been replaced by a 6 wire holder, not 4.

Quote from: WGB on 30 September 2007, 07:35 AM


Are the plastic cable holders on the cam-covers still available as they are brittle and I have already broken one.


Bill
Title: Re: 6.9 Plug Leads
Post by: WGB on 30 September 2007, 08:10 AM
I thought I remembered this discussion just as I felt the plastic go click.

I take it they were not continued on the 126 motors.

Bill
Title: Re: 6.9 Plug Leads
Post by: WGB on 08 October 2007, 08:35 AM
A shiny new set of plug leads and coil lead  arrrived today from the U.S of A - They have caps that say Beru 5 K Ohm and cost US$133.53 which included Freight of US$32 - Part No 100 150 01 19

I will fit them when I replace the gasket in my right hand Cam Cover.

I have also set the Parts Manager at Diesel motors to work to see what he can find for the plastic cable clips that break very easily (I've got to get something out of him for the cost of the gasket)

Bill
Title: Re: 6.9 Plug Leads
Post by: koan on 08 October 2007, 08:49 AM
Quote from: WGB on 08 October 2007, 08:35 AM

A shiny new set of plug leads and coil lead  arrrived today from the U.S of A - They have caps that say Beru 5 K Ohm and cost US$133.53 which included Freight of US$32 - Part No 100 150 01 19


Nice!

Are these identical to the originals with the metal plug ends and right angle distributor ends?

Which US supplier did you get them from?

koan

Title: Re: 6.9 Plug Leads
Post by: Big_Richard on 08 October 2007, 08:51 AM
Quote from: WGB on 08 October 2007, 08:35 AM
A shiny new set of plug leads and coil lead  arrrived today from the U.S of A - They have caps that say Beru 5 K Ohm and cost US$133.53 which included Freight of US$32 - Part No 100 150 01 19

I will fit them when I replace the gasket in my right hand Cam Cover.

I have also set the Parts Manager at Diesel motors to work to see what he can find for the plastic cable clips that break very easily (I've got to get something out of him for the cost of the gasket)

Bill

you should of got them at autohouse, they are about a dollar each there
Title: Re: 6.9 Plug Leads
Post by: WGB on 08 October 2007, 09:59 AM
Quote from: koan on 08 October 2007, 08:49 AM

Nice!

Are these identical to the originals with the metal plug ends and right angle distributor ends?

Which US supplier did you get them from?

koan



(http://gallery.w116.org/dl/15061-3/New+Plug+leads.jpg)

Hi Koan,

I took a picture of them on the floor just to prove to you that they were bright and shiny and they had shiny metal caps on them.

They came from Autohause AZ



Quote from: Patrick Bateman on 08 October 2007, 08:51 AM
Quote from: WGB on 08 October 2007, 08:35 AM
A shiny new set of plug leads and coil lead  arrrived today from the U.S of A - They have caps that say Beru 5 K Ohm and cost US$133.53 which included Freight of US$32 - Part No 100 150 01 19

I will fit them when I replace the gasket in my right hand Cam Cover.

I have also set the Parts Manager at Diesel motors to work to see what he can find for the plastic cable clips that break very easily (I've got to get something out of him for the cost of the gasket)

Bill

you should of got them at autohouse, they are about a dollar each there

I assume Patrick that you are talking about the clips being a dollar each - unfortunately I broke the clip after I had ordered the new leads.

Bill
Title: Re: 6.9 Plug Leads
Post by: koan on 08 October 2007, 10:30 AM
They are really nice and shiny WGB!

Now the clips, do you mean the ones that slip into the two holes in the cam boxes ?

If so I would be interested to know what you come up with (as oscar would be too).

The updated number supplied to me was different in that the projections on the back are a different distance apart and as a result they don't fit.

koan
Title: Re: 6.9 Plug Leads
Post by: CraigS on 08 October 2007, 11:19 AM
We've been through this Koan, and the correct ones are not available. The ONLY ones available are a 115 part number. Only thing you can do is to try and make them fit, or go to a wrecker and salvage some good ones - if possible.
Title: Re: 6.9 Plug Leads
Post by: koan on 08 October 2007, 05:04 PM
Quote from: CraigS on 08 October 2007, 11:19 AM

We've been through this Koan, and the correct ones are not available.


I know we been through it, but occasionally an experienced parts guy can come up with another number - and the correct part.

koan
Title: Re: 6.9 Plug Leads
Post by: OzBenzHead on 08 October 2007, 05:21 PM
I bought a set of three (x 6) plug-lead holders for an M110 from MB Spares for less than $20.  They were ex stock; didn't have to wait for them to be imported.
Title: Re: 6.9 Plug Leads
Post by: koan on 08 October 2007, 05:31 PM

WGB, I am most impressed by your (shiny) plug leads, so I have ordered my own set.

OzBenzHead, V8s need the 4 slot wire holders which appear to be NLA.

koan

Title: Re: 6.9 Plug Leads
Post by: Big_Richard on 08 October 2007, 07:30 PM
Quote from: koan on 08 October 2007, 05:31 PM

WGB, I am most impressed by your (shiny) plug leads, so I have ordered my own set.

OzBenzHead, V8s need the 4 slot wire holders which appear to be NLA.

koan



I have the auto house 6 wire holders, they fit straight into my 6.9s valve covers without problem.

I dont see what all the fuss is about.
Title: Re: 6.9 Plug Leads
Post by: koan on 09 October 2007, 02:35 AM

I misunderstood OzBenzHead's post, read it as three wire holders and assumed two were used on a six.

koan.