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On my second set of Bosch plugs with no issues whatsoever, converted to 1.8t coils a while back now and no issues at all on the ts chips running 388 bhp.
Does your Rev counter ever go to zero momentarily at all when the hiccup happens ? Or do you just drive through it ?
On my second set of Bosch plugs with no issues whatsoever, converted to 1.8t coils a while back now and no issues at all on the ts chips running 388 bhp.
Does your Rev counter ever go to zero momentarily at all when the hiccup happens ? Or do you just drive through it ?
That's good to know. I haven't really driven the car since it started happening but tbh I can't say I noticed the Rev counter doing funny things.
Russ I have a pair of good POS units you are welcome to borrow for testing should you need to.
If you need any help installing new OEM coils give me shout. We can improve on the OEM wiring protection under the cover, and use the correct crimp terminals rather than soldering
Another option is using LS coils and keeping your 20v turbo cover
Alex, that would be much appreciated mate. When we spoke about options previously I was leaning towards the LS conversion but having looked in the engine bay I can't see where they could be located without looking out of place. It's a real dilemma as if I go away from OEM coils I'll lose the natural appearance in the engine bay which I want to avoid if possible. That said, is a coil conversion an accepted step away from pure OEM considering the cost and availability of the original coils? I would like to think so but wouldn't want that to devalue the car in any way.
Russ, I gave you 2x working POS units - they're the brown matchbox sized things on one of your shelves
I have the NGK plugs. They need gapping to 0.6mm for our cars and I can't report on them at full throttle yet, as I'm running the thing in but on part throttle, they're fine.
30 mins to swap.
Cheers'en, AndyC
1994 ABY Coupe - Projekt Alpinweiss
Russ, I gave you 2x working POS units - they're the brown matchbox sized things on one of your shelves
I have the NGK plugs. They need gapping to 0.6mm for our cars and I can't report on them at full throttle yet, as I'm running the thing in but on part throttle, they're fine.
30 mins to swap.
Ha! I thought I'd seen some in there! I'm going to have to find time this weekend to have a bit of a play around. Need to get her running by Xmas. I'll grab some plugs anyway even if they hang around as spares.
Ok, so I've ordered some NGK BKR7E-IX but I have to ask, what's all this 're-gapping' all about? I'll be honest and say this is the first time I've heard of this and really don't understand the reasoning behind it. Up until now I've just bought a set of plugs, fitted them and that's it. Can someone provide a layman's explanation?
One thing I did read in the thread link that Alex provided was that the plugs could also cause lifter ticking?? Popdemonic mentioned it on the first page of the thread? I only ask as I had some lifter ticking but can't see how the plugs would cause this??
Ok, so I've ordered some NGK BKR7E-IX but I have to ask, what's all this 're-gapping' all about? I'll be honest and say this is the first time I've heard of this and really don't understand the reasoning behind it. Up until now I've just bought a set of plugs, fitted them and that's it. Can someone provide a layman's explanation?
Modified engines require smaller gap settings to account for the amount of power you're putting through the engine. General rule of thumb: the more power, the smaller the gap. Our 20VT engines seem to be happiest with a gap of 0.6mm
A properly gapped spark plug is necessary for a properly functioning engine. The gap size affects the spark plug's firing temperature, which has a direct relationship to the combustion of fuel and air in the engine. Opening the gaps...
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
0.6 mm is what you want. Wider and the spark is less intense and gets "blown out". Narrower and there isn't enough spark to fire the mixture. 0.6 mm is the compromise. The Bosch F5DP0Rs came at 0.6 mm out of the box because they are the OE 20VT plug.
The NGKs are more universal and might be gapped differently than 0.6 mm out of the box.
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
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I just ordered these Russ seamed like a good deal. 
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