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Can I mail these to you? or is there an easier way?
Cheerz
Moderator: John_Heard
It's not excessive I don't believe. Probably wouldn't want to put much more in it than you already have. At this point you might want to check all of them and see if they're about the same before you add even a degree.Urinemachine wrote:So the timing is acceptable?
8 degrees sounds quite reasonable for a 10:1 motor I think. They are all the same really. Does the ground strap look normal? All of the images I see on the net (which look like they're mostly from pushrod motors) are a brown color or something while mine is like a grey color. It looks like plugs pulled from my other stock BMW, but I don't know if it should look different.Beyond wrote:It's not excessive I don't believe. Probably wouldn't want to put much more in it than you already have. At this point you might want to check all of them and see if they're about the same before you add even a degree.Urinemachine wrote:So the timing is acceptable?
Here's the pic...Nitrous_1.3 wrote:I realize that you guys are all running high power engines that are well beyond the scope of my little 1.3 liter but I was wondering if you may have some insight into my plug. The car is a Suzuki Swith with a 1.3L engine. Nitrous is a wet system 55 shot (n2o jet 0.032 and fuel 0.017) activated at 3500RPM through to 7200RPM. I do have an aftermarket ignition (Mallory Hyfire). Mods are filter/headder/exhaust. Timing is set at stock...I didn't back it off for the 55 shot but once I get into the larger ones (plan is to end up spraying 125) it will definetly happen. There are no funky cam gears to change timing there either. Fuel is Sunocco 94 with no octane boosters. AF gauge (one wire...no $$ for wideband just yet) is showing rich through the entire run. I see what may be some peppering on the insulator and I believe the ground strap colour is from the Cadmium burning off. Plug is an NGK BP7ES (one range cooler than stock). The picutre is a 3-4 pull. Unfortunately I wasn't able to pull the plugs out right away because the car needed to be driven home. If its absolutely necessary I do have another new set I could do it with. Any insight you may have would be greatly appreciated.
John wrote:From what I can see on your plug, it appears you might be able to add
another degree, maybe two of timing. The timing mark can move further out
towards the bend. I don't see any signs of detonation on the porcelain at
this point, but it might need some better fuel with the extra timing. Might
want to only go 1 degree at a time extra. Now on the fuel we need to look
down in side the plug, I can't see that from your pic. I would say it's
burning fine at idle and part throttle and that your using a plenty hot
enough plug as there are no fuel deposits on the top half. The color of
the plug base doesn't show much fuel either, so my guess is you're either a
bit lean or pretty darn close on the fuel mixture.. Disregard your A/F
meter, if it's not a wideband it can't measure what we're looking for
anyway. That plug is not showing that it's fat at all, but if we could see
down inside that would tell more. At this point I'd say put a little more
fuel in it if and when you advance the timing any.
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