HT leads

[A900ss]

Are the HT leads for all Chimaeras the same regardless of engine size?

Likewise, to assist my local motor factors, are they they same as range rover 4.6? (Or even any other rover V8)

Thanks

Edited by A900ss on Friday 27th December 10:06

[A900ss]

PS - is the the right kit for dizzy cap, rotor arm and leads? Seems very good value and looking back on PH, no bad comments about Powerspark.

PS - I've a 450 Chimaera

http://www.ebay.co.uk/itm/TVR-V8-Blue-Distributor-...

[Oggs]

Buy genuine Lucas rotor and cap if you can.
I have that kit and got a missfire :

[blitzracing]

Your basic Range Rover 3.9 lead kit will give you all the Distributor to plug leads you need. The lead from the Dizzy to the coil might not fit, so you may need to buy one lead on its own to add. Go for decent OEM stuff (I like the Bosch ones), and avoid any sort of low resistance "power" leads.

[Richard 858]

Mark, in that case do you advise avoiding the Magnecor leads ? On a general note I have a set of Powerspark leads fitted at present on my 450 and its giving me 275 hp at the flywheel with the only modifications being full decat & ACT smooth bore induction hose.

[Colin L]

I have that set on mine its a 450 and no problems either and I cause they are so cheap got a spare set.

Had a set on for 3 years no problem and just refreshed them last year with a new coil.

Powerspark do work great.

Colin L

[SILICONEKID346HP]

Richard 858 said:

Mark, in that case do you advise avoiding the Magnecor leads ? On a general note I have a set of Powerspark leads fitted at present on my 450 and its giving me 275 hp at the flywheel with the only modifications being full decat & ACT smooth bore induction hose.

I would say Magnecor are good leads but they are very over priced ..

[Richard 858]

Yes Colin, forgot to mention I also have their coil, only really bought them as I fancied a red set of leads & a shiny coil, but also very pleased with results so far.

[blitzracing]

The issue with low resistance leads is they cause high voltage glitches in the coil primary that spikes the cars wiring system. The 14CUX is pretty tough against this, but it can cause the Tacho to glitch, and can upset any more sensitive electronics. The magnecore red leads are pretty low resistance and highly over engineered for an RV8 system- the blue or preferably black range would be better for this application. Its all to do with the total lead / cap /plug resistance, so you could run low resistance leads with resitive plugs or suppressor caps without problems, but stock leads work just fine with stock plugs without the expense. If you want them because they are red, and nothing is getting gliched then be my guest, but you wont get any more power.

Edited by blitzracing on Friday 27th December 20:54

[carsy]

I used to use the Powerspark leads and have to say never had a problem. I have since made up a set of Moroso blue max 8mm leads from,

http://www.avrosystems.co.uk/realsteel/section9.pd...

The quality is outstanding and worlds apart from the powerspark stuff.

[Pupp]

blitzracing said:

The issue with low resistance leads is they cause high voltage glitches in the coil primary that spikes the cars wiring system. The 14CUX is pretty tough against this, but it can cause the Tacho to glitch, and can upset any more sensitive electronics. The magnecore red leads are pretty low resistance and highly over engineered for an RV8 system- the blue or preferably black range would be better for this application. Its all to do with the total lead / cap /plug resistance, so you could run low resistance leads with resitive plugs or suppressor caps without problems, but stock leads work just fine with stock plugs without the expense. If you want them because they are red, and nothing is getting gliched then be my guest, but you wont get any more power.

Edited by blitzracing on Friday 27th December 20:54

Which, presumably, is why Magnecor are not (and are expressly not marketed) as being 'low resistance' leads

[blitzracing]

Thats not a bad page technically- but its all relative. The Magnecors use a system that generates a back emf when a high voltage spike is applied from the coil- this opposes the pulse from the coil, so it controls its discharge rate. This effect disappears as the rate of discharge slows, so you can always get every last bit of energy from the coil. If you measure the DC resistance of a Magnecore, its very low, but this is not the same "resistance" that the coil sees when it discharges. However clever this system is, it still does not reach the same type of "resistance" levels found in conventional leads, so you still get larger primary spikes- that's what glitches the tacho'. The worse case that Magnecore describe is simple low resistance leads that have no back EMF. This is the worse of all worlds, so much if you use straight copper HT leads it doubles the primary spikes from around 300 volts to nearer 600!