I have an later e88 with SUs and ZX dizzy, e12-80 on my 240. I've read a lot of different stuff on the plug gap. Half say go with the motor and the other half say go with the ignition. Motor says protruding with .035ish gap. Ignition for '79 says non protruding .044ish gap.

I like to think it has the strong spark at .035 protruding for carbs. I opened them up to .042 on bpr6es-11 and it didn't run too good. What do you all think? I also read that a closer gap on the 1.1mm would angle the tip downward too much and you don't want that. I think I should buy these instead of the 1.1mm

https://shop.advanceautoparts.com/p/ngk-standard-nickel-spark-plug-bpr6es-reliable-oe-performance-4008/18090163-p?product_channel=local&store=6668&adtype=pla&product_channel=local&store_code=6668&&&&&gclsrc=aw.ds&gad_source=1&gad_campaignid=16396150477&gclid=CjwKCAjw6vHHBhBwEiwAq4zvA_2SIcXPfpN8WAkuS9dMgo6W_K-pa5oGWg56uecTiat8BKKgmfmKTRoCxtAQAvD_BwE

Thank you for any input.

Hi, I always use the standard BPR6es-11 on my standard ignition with nos contact points. I think it will depend on what ignition coil your using i would go with the bpr6es-11 sparkplugs when you have a orig. coil.

Btw, the 280zx i got has that orig dizzy, and uses also the same plugs runs great with -11 plugs. (1,1 mm Gap.)

You could buy those 0,9mm plugs and if it does not run right open them up to 1 mm or so..

(If you have the 123 ignition coil.. my opinion? throw it in the BIN! and get yourself a orig. coil.. ;-) )

I'm using a Crane/Fast PS20 Fireball with 1.4 OHM coil, no ballast resistor. I wanted all that old stuff gone, I've never fooled with points except file down the contact point on my go-kart. Cool little file too.

It starts missing with the wider gap up high but from what I remember I've always ran the wider gap? Grasping at straws, the easy ones.

What's the tach needle doing when it's missing? Those E12-80's are all old, or if they're not they're probably aftermarket. Maybe it's failing.

Everything looks good. I just need to start over with the basic tune up. The dizzy I have says 17 and 34 with full advance. I used that excel spreadsheet someone made for all the distributors. My markings show it to be a '79 dizzy.

It's ran great until I pulled the plugs and "cleaned them". The car has sat since my knee surgery almost a year now. I haven't done anything since but trying to get back to normal but I admit my priorities have changed.

I'm going to get a set of bpr6es and leave that big ZX gap out of it. I read a pretty sensible thread on keeping the gap to the head not the distributor. So I'll try .035 to start then see what that does. I know carbs need protruding tips so I'll go with that.

Thank you for the help!

Walter Moore is the one that did the work.

Distributor advance curves revision 1-2.xls

10 hours ago, siteunseen said:

It's ran great until I pulled the plugs and "cleaned them".

Maybe your cables are to old? They get little cracks inside (after you took them off) and the resistance changes to too high?

Also use some fresh gasoline because todays fuel is really... sh*t.. I always now use 96 overhere.. my 240z runs 15! km/hr faster on the good stuff! And no problems with older fuel.. (Yeah i know you don't have 96 fuel but your country has different numbers, just use higher number in cars that don't drive daily.

19 hours ago, siteunseen said:

Crane/Fast PS20 Fireball with 1.4 OHM coil, no ballast resistor. I wanted all that old stuff gone

No ballast resistor... could make that new coil to hot?

The old stuff gone, haha, i drive a 240z with a 54 year old coil, it's still running strong.. in the WINTER it's my daily driver!

Lastly, i don't know the "newer" stuff like those "fireball" stuff but i don't ....... wouldn't want that sh** under MY bonnet.. oh sorry.. HOOD! ;-) 😆

I'm with you on older is better but when my "newer" "fireball" coil goes to sh**...I'll be walking home on my brand new artificial knee. I ran the old one for 55 years and that SOB just quit.

26 minutes ago, siteunseen said:

I ran the old one for 55 years and that SOB just quit.

Are you talking the old knee... 😁