Unsupressed plug extenders

[Naybr]

Has anybody tried using these? Any problems?

They seem much more readily available than the supressed ones which I gather were the original fit.

I would have assumed that most modern HT leads would include enough supression resistance anyway ...?

[Mark_S_24]

I don't think you can buy new Resistive extenders anymore.
I got some new ones in conjunction with new HT Leads.
I found out these were non-resistive & now my rev counter jiggles all over the place.
So, I'm gonna get some new new HT leads that are resistive as standard, as opposed to the super dooper ones I bought

HTH

Mark

[SILICONE KID]

Racetech sell Resistive Bosche plug extenders.They look better quality ..

[BrianMillar]

I recently wrote to Beru asking about the availability for the Spark plug extenders.
The part numbers I used were taken from the ones fitted to my 98 Chim 500

Manufacturer: BERU
Description: Spark Plug Connector 5Kohm
BERU Order No: 0 300 372 304
Beru Code: ZLE 317

The reply I received was:

BERU said:

28 October 2010

Hello Brian

We regret, but part is deleted without replacement.
We will cancel product information from our homepage.

We apologize for any inconvenience in this matter.

Mit freundlichen Grüßen / Best regards

Michaela Kühn
Export Sales and Administration Aftermarket

BorgWarner BERU Systems GmbH
Mörikestrasse 155
71636 Ludwigsburg / Germany
Phone: [phone]
Fax: [phone] / 132-752
www.beru.com

I also contacted several parts suppliers in Germany and eventually found two who said they had some in stock. It turned out that they had four in stock each, so I now have a spare set. However, the suppliers also commented they could not get further supplies.

They were originally fitted to Opel Kadett's but aparently they now use the Bosch ones. (Opel Part No. 1784388 - I think)

So it looks like we may be stuck with either the unsupressed ones or the Bosch ones in future.


There was another part number I came across that appears to be the same supressed extender:

BERU Order No: 0300302303
BERU Code: ZLE302

I haven't had time to investigate this though.

[ITVRI]

Will these work?
http://www.moss-europe.co.uk/Shop/ViewProducts.asp...

[BrianMillar]

ITVRI said:

Will these work?
http://www.moss-europe.co.uk/Shop/ViewProducts.asp...

They are not quite the same angle as the originals but if you could get hold of one and try it on each plug for clearance it should do the job. The plastic/bakelite may not hold up as long as the metal ones though. The fact they are fitted directly to the cables also means one less joint in the system.

[martinbg]

Hi there, I've joined the forum because of this topic in particular. Someone did mentioned the Opel Kadett here and actually I have one in the moment. Mine is Kadett E, but this isn't important. Here in BG the 0300372304 BERU extenders are for sale with product number ZLE 317, these are with the 5 kOm mark, and they are the suppressed ones as I understand. The unsuppressed ones are with number 0300302303, they doesn't have the 5 kOm mark. The product code is ZL 302, but I've seen pictures of the plug extenders with the 0300372304 number stamped on, but designated as ZL 302, which is pretty confusing. I actually have only one unsupressed and two suppresed, and I want to fit them back to the car, because I'm about to buy new ignition cabels which are the same as the original ones, and they used to fit with the extenders together. I'm not aware about the particular type of the fourth extender, but I'm going to buy one as well. So, I would like to ask those of you, that used to aquire the hole plug extenders kit, if there are 4 equal types of the mentioned ones or 2 supressed and 2 unsupressed. I'm asking that, because as I mentioned earlier, I have only 3 of 4 which are different and I wonder what is the 4-th plug extender type. I came across this document which explains that the ignition cabel plus the plug extender should have equal resistance for every spark plug. So, I thought that the 5 kOm extenders fit to 3-rd and 4-th cylinder because of the shorter cabels (less resistance) and probably the others, with 0 kOm resistance (unsupressed ones) fit to 1-st and 2-nd because of the higher resistance of the cables there. Ofcource I'm not sure about that, and so I wonder what you think about it?

PS: sorry for my english ;-)

Edited by martinbg on Wednesday 30th March 00:22

[BrianMillar]

If you can get the original extenders then you should fit a set of four.

As I understand, Only one component of the spark circuit should be resistive. Either, the leads, the extenders or the spark plugs.

It would be interesting to know where the original extenders can still be obtained, They must be old stock, and if it is possible to get some by mail order.

[blitzracing]

Its all getting a bit too over analytical. All that is needed is a reasonable amount of resistance between the coil and each plug to control the rate the coil discharges at. If the overall resistance is too low you end up with large voltage glitches on the coil primary that can make the rev counter erratic, and at worse could damage the ignition amp, or if the path resistance is too high the spark will become weak, but there is a pretty wide resitance range between these 2 limits. As the resistance of the plug leads depends on how long they are, its going to be almost impossible to match the resistances for each spark path, and certainly not worth the effort of trying to ballance the resistances by switching about resistive or non resistive plug caps. If you use non resistive extenders, and the Rev counter does stange things, then you can simply switch to resistive plugs, or add an extra resistive inline suppressor (assumming you can still get them??)to the king lead from the coil.

[450Nick]

I recently ran my car with unsurpressed plugs & extenders and the car developed some significant ignition & ECU problems. I would not recommend it in the slightest. If you do buy unsurpressed extenders, at least put in surpressed plugs.

[Naybr]

As an update, I did indeed buy the unsupressed extenders which I am using with very good quality supressed leads.

The car is running more smootly as a result, but there is a little ignition noise interference on some radio stations.

[EggsBenedict]

had all my extenders replaced at Dan Taylor's. Fitted Magnecor suppressed leads, no problems at all, but I don't have a working radio anyway

[Pupp]

EggsBenedict said:

had all my extenders replaced at Dan Taylor's. Fitted Magnecor suppressed leads, no problems at all, but I don't have a working radio anyway

And you neighbours prolly haven't got any TV reception either