Spark plug question for a 1988 351 indmar

[pbgbottle]

Question guys I was just at Walmart today and grabbed some spark plugs I guess I was not paying much attention and in a rush ,I grabbed autolite
AP 24. Not just the 24. Will these
Platinum ones still work fine
I just noticed the difference as I went to gap them.



,,,,,,,

[east tx skier]

From my recollection, you want to run the copper ones. The platinum will "work," but the temperature is not optimum.

[pbgbottle]

thanks i guess i will try them now that i opened a pack i did a search on autolite's website .
for a ford 351 i think bronco and they recommend the plats .but also suggested the copper.

shouldn't they be the correct heat range . just the platinum ones would last longer .?

don't they both have copper core just different tips . oh well maybe someone else will have more input .

cheers

[east tx skier]

I can't recall the specifics, but I bought the platinum tips, asked about it on here, and based on the answer, returned them for the copper plugs. Good luck.

[Panda Cub]

Bought mine through skidim.

[pbgbottle]

thanks i will probably try them and just get the copper plugs also for next year after winterization

cheers i will report back on the plats , my mechanic buddy firgures the plat should be fine .

[TRBenj]

Copper is a better conductor, but platinum lasts a lot longer. The heat range on both is the same.

Next time, save your money and stick with copper... but I wouldnt hesitate to use the platinums since youve already got them on hand.

[pbgbottle]

The plat plugs are still cheap at Walmart.
Small update ran the boat with the plat plugs the last 5 outings and don't notice any difference. Boat ran great through out the full rpm range.