Holley Accelerator Pump Tuning

deafwish · **Posted:** Sat Mar 01, 2014 5:20 pm

From memory with 2 stroke plug chops, the tip of this electrode is looking ok?

neutron · **Posted:** Sat Mar 01, 2014 5:57 pm

Looks lean to me

pickledboater · **Posted:** Sat Mar 01, 2014 6:33 pm

Looks lean to me too Daz. Should have some color of a cup of hot chocolate on the white part of the electrode.
(ps. I really like the swim platform. Still looking for one off of a salvage wakeboard boat to modify.)

deafwish · **Posted:** Sat Mar 01, 2014 6:46 pm

Going by this, I'm looking rich on the base ring?!

http://www.wallaceracing.com/plug-reading-lm.html

<edit>
Am I wasting my time doing plug readings with the detergent levels in today's hi octane fuels?

neutron · **Posted:** Sat Mar 01, 2014 7:58 pm

How many hours on that plug

pickledboater · **Posted:** Sat Mar 01, 2014 8:02 pm

You may have a point. I know that Cheveron gas here has some additive they call mmt. It makes the plugs look like they have rust on them. Also, the air fuel ratio will be somewhat different at idle, midrange and wot, because of the different circuits in the carb or the delivery of the injectors at different rpm and load, so a plug reading for each range would be different. IMHO, if it isn't pinging under load, not running hot, and seems to run better with the new adjustments, I'd go with it.

neutron · **Posted:** Sat Mar 01, 2014 8:10 pm

pickledboater wrote:

You may have a point. I know that Cheveron gas here has some additive they call mmt. It makes the plugs look like they have rust on them. Also, the air fuel ratio will be somewhat different at idle, midrange and wot, because of the different circuits in the carb or the delivery of the injectors at different rpm and load, so a plug reading for each range would be different. IMHO, if it isn't pinging under load, not running hot, and seems to run better with the new adjustments, I'd go with it.

You are right if its running fine leave well enough alone.

If I do a plug reading I use new plugs and run the engine at normal cruise speed then shut off engine without letting it idle long then pull a few plugs from the center cylinders

deafwish · **Posted:** Sat Mar 01, 2014 9:02 pm

The plugs have around 10 hours on them and this picture was from a WOT shutdown/ chop.
Timing is at 9 BTDC and never pings anywhere through the RPM or load range.
Throttle response is brilliant now the accelerator pump nozzle size was increased and she never over-heats.
I think I'll leave it as-is, thanks guys!

JohnnyMarlin · **Posted:** Sat Mar 01, 2014 9:33 pm

Put a bit of anti-seeze paste on those threads.........You'll be glad you did!

deafwish · **Posted:** Sat Mar 01, 2014 11:10 pm

My work manufactures a copper based anti seize & I assure you that every plug already has it on there! :wink:

LVChris · **Posted:** Sun Mar 02, 2014 12:44 am

deafwish wrote:

It was from Lake Mead...

Wow it came all the way from the desert of Las Vegas to Australia! That's some trip.

deafwish · **Posted:** Sun Mar 02, 2014 2:59 am

I've even found 3 pennies in the bilge, to date!

pickledboater · **Posted:** Sun Mar 02, 2014 5:50 pm

That's ric's 2 cents worth and a small tip.

ric · **Posted:** Sun Mar 02, 2014 9:13 pm

pickledboater wrote:

That's ric's 2 cents worth and a small tip.

Love you.

www.iFourWinns.com

Holley Accelerator Pump Tuning

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