Post by
positron1 »
https://forums.nicoclub.com/positron1-u27022.html
Sat Apr 26, 2008 3:14 am
I got a set of spark plugs in today, here's what I did.
Tools needed:Socket wrenchSpark plug extension16mm spark plug socket10mm socketCanned-airSpark plug gapper
Before I got serious about doing a SR swap I called myself buying up parts for the intended swap even before getting the engine....big mistake. I did no research, didn't know exactly what I needed and wound up with a couple of useless parts so anyone who plans on doing this who doesn't have a good understanding of auto mechanics, aka "shadetree mechanic" like me, make sure you do your research so you don't waste time and money on parts that you don't need. Because of my impatience....I now have two sets of plugs one of which is completely useless to me.BKR6EIX Stock#:6418-stock boost. Heat range=6BKR7EIX-Mild hp. Heat range=7BKR8EIX-Heavily modified, high hp. Heat range=8I'm planning to run a stock boost, stock engine setup so this is the set that I need. I got this set from FRSport.com and they come pre-gapped for a plug and play install.This is the set that I bought before. Came to find out that they are not what I'll need and they are gapped to .040. BKR5EIX-11 Stock#:5464????? Let's get started. Get a allen wrench to remove the spark plug/coil pack cover. There are six allen head bolts.Use a 10mm socket or a screwdriver to remove the coilpack bolts from the valve cover.Pull the coilpacks out one at a time. I think some people disconnect the harnesses from the coilpacks before pulling them.You can see the plugs deep down in the block.Take a can of compressed air and blow out the well to remove any debris that could get into the chamber once you take out your plugs.16mm spark plug socket and spark plug extension.Take your spark plug socket...and place it in the well.Remove the spark plug.Pull it out. Remove all four plugs.New plugs versus old plugs. I looked it up but I still can't judge the condition of these pulled plugs. From what I read they seem to be normal or maybe carbon fouled...I can't tell...anyone? Here's the breakdown.
NORMAL PLUG-Light tan or gray deposits on the firing tip.CARBON FOULED PLUG-Identified by soft, sooty black deposits, may indicate an improperly tuned vehicle. Check the air cleaner, ignition components and engine control system.PHYSICALLY DAMAGED PLUG-May be evidence of severe detonation in that cylinder. Continued detonation could not only damage that cylinder but the engine as well.OIL FOULED PLUG-Indicates an engine with worn piston rings and or bad valve seals allowing excessive oil to enter the chamber.EXTREMELY GAPPED DISTORTED PLUG-Has been left in the chamber for too long as indicated by an extreme gap. These could cause misfiring and stumbling accompanied by a noticeable lack of power.
Take the new plugs and insert it into the socket.In order to avoid crossthreading them I seated them by hand instead of using the socket. You can feel when they are properly threaded better this way. Once you get them in, use the socket to tighten them.Torque the plugs to 14-22ft.lbs.Installed.Install the other plugs the same way, reinstall your coilpacks and your spark plug/coil pack cover.
If you have to manually gap your plugs then you can do so with a spark plug gapping tool. You can get them at the parts store for like a buck.Spark plug gapping tool...also useful to check gapping.Like I said before, these came pre-gapped to .030 but I checked just in case and they were.I thought it was cool that these old plugs were NISMO so I decided to keep them. I even cleaned one up and made a keychain out of it.