Re-Gapping Plugs For New Coilpacks?

[T.D]

Hey, just a quick question, today I had my spark plugs replaced and gapped at 0.7mm hoping to fix my minor misfiring issue. It still hasn't made a difference so my next and final port of call are coilpacks (after checking everything else) so I was wondering if I got new coilpacks, am I still alright to keep the spark plugs and the gap of 0.7mm?

If it's not alright what sort of problems will I run into if I kept the gap?

Plugs are heat range 6, copper and 0.7mm.

Cheers.

[l0WRB]

spend $24 and put BK7RE in . pregapped .8 heat range 7.

[blind_elk]

Depends how much power you are making. If the engine is still basically stock, then gap the plugs to factory (1.1mm).

[T.D]

Thanks for the replies guys.

Sorry, I forgot to mention the car is making 194rwkw @ 12psi (standard turbo).

So should I get new plugs gapped to 0.8mm with a heat range 7 or am I ok to continue using the new ones I dropped in today?

Cheers.

[T.D]

BUMP?

[scotty nm35]

If they are new, just leave them and see how they go, they will be .8mm in a month anyway.

What coils are you going for? Most say new stock ones are the best.

[T.D]

Alright then, no worries.

I'm looking into the Yellow Jackets as they seem to have a pretty good rep and are good value for money. Yeah, I've read that the standard coils are excellent but cos abit over $1k though

So if I left it gapped at 0.7mm witht he new coilpacks, is there any sort of negative effects that I might induce (eg. fouled plugs, overheating coilpack etc.)?

[scotty nm35]

They aren't hard to remove and regap if you are worried.

I think you can get the stock ones for around $500 from the US.

[blind_elk]

Thanks for the replies guys.

Sorry, I forgot to mention the car is making 194rwkw @ 12psi (standard turbo).

So should I get new plugs gapped to 0.8mm with a heat range 7 or am I ok to continue using the new ones I dropped in today?

Cheers.

I'm running a 1mm gap @ 150AWkW & heat range 6 (I think) in my RB25DET, with Splitfire coils. Don't have any sort of problem with misfires or the like.

[T.D]

They aren't hard to remove and regap if you are worried.

I think you can get the stock ones for around $500 from the US.

Alright then, no worries. I just wasn't sure if they're is any negative effects on the car if I ran a close gap with a brand new set of coils.

I prefer something local so I'm pretty keen on the Yellow Jackets

I'm running a 1mm gap @ 150AWkW & heat range 6 (I think) in my RB25DET, with Splitfire coils. Don't have any sort of problem with misfires or the like.

Cheers for the info. What boost are you running?

[DVS JEZ]

The bigger the gap. The better the spark (if the coilpacks are strong enough) bigger gap can increase torque

[T.D]

The bigger the gap. The better the spark (if the coilpacks are strong enough) bigger gap can increase torque

Ooooo, I see. So let me see if I get this right:

- weak coilacks require a smaller gap so that there can be spark, but itsn't so good for performance (but can eliminate misfire)

- coilpacks with a strong punch can utilise a spark plug with a larger gap (due to being able to create a bigger spark over a larger distance) and can increase torque

- running a small gap (eg. 0.7mm) on a set of new coilpacks isn't "bad", but not doing myself any favours in terms of performance.

Correct?

[zoom]

yes! 0.7mm is ok but like you said you may loose a tiny bit of performance and your engine will idle/run not as smooth as with larger gaps.

In your case 12psi and stock turbo, heat range of 6 and 0.8mm should work fine.

[Justlikemusic]

spend $24 and put BK7RE in . pregapped .8 heat range 7.

Im gonna have to do this and try... siliconed up the coil packs today and not much change in the deadness zone after around 4000rpm+. I pulled the plugs out and cleaned them up while I was at it. (Battery went flat and I wanted something to do while it was charging). Will replace the plugs during the week... might have to try a $20 VN commodore wasted spark setup since I cant justify spending $400 on coil packs for a car im going to sell soon.