Ht leads

Post Fri Jul 12, 2013 9:44 pm

Hi guys. I'm in need of a set of new ht leads for my 325 cabby. Where is a good place to get some on a Saturday locally in Bedfordshire anyone ? Also any to steer clear of ?

Post Fri Jul 12, 2013 9:53 pm

gingerrusta wrote: Also any to steer clear of ?

Yes! Anything except the genuine items from BMW.
It's very unusual to find a genuine lead that has deteriorated from new, except where some idiot has been yanking the caps off of the plugs by the wires, so the best route is to obtain a second hand set, which will have the ident sensor fitted to lead #6, unlike most aftermarket stuff.

Post Fri Jul 12, 2013 10:00 pm

Any ideas where I can get a good set on a Saturday ?

Post Fri Jul 12, 2013 10:04 pm

Quick ad. in 'parts wanted', or a trip to a local scrappy.
What's happened to the ones you have?

Post Fri Jul 12, 2013 10:14 pm

It's a bit weird but at weekend she was running a dream then Sunday started missing. Disconnected battery thinking it might of picked up some fault and was trying to compensate for it over fuelling. Started her tonight and checked the leads and 1 -2 didn't seem to be sparking as well as they should . I put new plugs in as well as the old ones ( which weren't that old ) were black.
My mechanic man said probably best to get another set of leads.

Post Fri Jul 12, 2013 10:16 pm

Are the 320 the same as 325 leads ?

Post Fri Jul 12, 2013 10:26 pm

Post Fri Jul 12, 2013 10:30 pm

When I say 1 and 2 they were the leads nearest the dizzy cap. I have a set off a 320 so could try swapping the baddies .
If you are at any of the shows Brian moooore I would like to buy you a beer for your help. You are a true e30 guru

Post Fri Jul 12, 2013 10:31 pm

yes get genuine, mine had aftermarket on, I replaced them with after market twice after developing misfires over time (one set lasted a week) before putting on a set of original 1986 ones off my e28, still running like a dream

Get yoyrself down the scrappy!

Post Fri Jul 12, 2013 10:38 pm

Are they a lot from BMW ?

Post Fri Jul 12, 2013 10:46 pm

A lot more than aftermarket....
I had a similar experience. I measured the resistance of my leads and was shocked to find them over 6500ohms. Then when I took them off I realised they were aftermarket

Post Fri Jul 12, 2013 10:56 pm

I'm going to BMW tomorrow so will get a price . Will try replacing the leads in question to see if I can get by then. Going to Surrey Sunday so wanting her to be ok for the run.

Post Fri Jul 12, 2013 11:04 pm

Morat wrote:A lot more than aftermarket....
I had a similar experience. I measured the resistance of my leads and was shocked to find them over 6500ohms. Then when I took them off I realised they were aftermarket

As long as they are below around 10,000 ohms, they should be OK to use.

Post Sat Jul 13, 2013 3:04 pm

Speedtouch wrote:
Morat wrote:A lot more than aftermarket....
I had a similar experience. I measured the resistance of my leads and was shocked to find them over 6500ohms. Then when I took them off I realised they were aftermarket
As long as they are below around 10,000 ohms, they should be OK to use.

This is true 6,500 ohms is not a problem...unless you are using these leads with resistive end caps which I have seen before!

Post Sat Jul 13, 2013 8:14 pm

I'm pretty sure this is the part number > 12 12 1 720 529

If so, then it comes up at £267.42 at BMW Cooper.

I've got aftermarket leads made by BBT, bought from GSF. Around 90 quid, I think. No complaints so far, but I had them for less than a year.