The V8 Owners Forum -

Posted: **Mon May 21, 2012 12:09 pm**

I have been given a set of these -they have been used, just as a spare set to get my VDP EFi running as the ones in the car get wet with the cranking of the engine.

However, I have noticed that the electrode is longer than the Denso W20EPR-U plugs that I currently have in the car. I assume they should be ok as the person I got them off breaks engines / parts.

Any advice appreciated.

Posted: **Mon May 21, 2012 1:21 pm**

Hi
How much longer? it could be an issue!
Mike

Posted: **Mon May 21, 2012 4:08 pm**

Another question to add to Mike's.

Is it the threaded section that's longer or just the electrodes.

Denisl

Posted: **Mon May 21, 2012 9:05 pm**

Just the electrode - threaded portion is the same.

Posted: **Mon May 21, 2012 10:09 pm**

Unlikely to be a problem unless you have domed pistons.

However, these plugs would not ideally suit a tuned performance motor.

Denis

Posted: **Sun May 27, 2012 3:55 pm**

Will these be ok in a 9.75:1 compression engine? I believe the pistons are different.

The V8 Owners Forum -

Champion N12YC Plugs

Champion N12YC Plugs