AC SR83P Plugs. Any good ?

[Scott M]

My core O290 came with 7 AC SR83P spark plugs. Are they any good ? Are they legal to use ? The Lycoming spark plug SI doesnt list them. The Champion REM38P are a cross reference but they arent on the approved list either.

[Glen Geller]

Many of us with Lycoming engines prefer the Tempest Spark Plugs.
You can search the website for Tempest to see several discussions.
Shop around, prices can vary.

Here's a link to the selector chart.
https://tempestplus.com/wp-content/u...pp_GuideV7.pdf

GG

[Steve Pierce]

If they cross reference to another plug that is called out for the engine I would replace them with a correct spark plug. They call out spark plugs for reach and heat range.

[Scott M]

Yes, I will likley go with a tempest UREM40. I was just wondering if platimum fine wire spark plugs were some kind of super duper plugs or something. They are very expensive. Wasnt sure if they had any real value.

[PACERGUY]

I run Tempest fine wire plugs in my 0320 160 hp cub. Over a thousand hours and doing great!! Very seldom do I have any lead fouling issues, easy to clean and expect to last at least 2,000 hours. Not cheap but having the best never is.
DENNY

[Steve Pierce]

I get 500 or so hours out of massive electrode plugs, 2000 hrs on fine wires. Pay now or pay later plus the benefits of fine wires.

[tnowak]

What would the benefits of fine wire plugs be (in an A65) over massive electrodes ?

Sent from my SM-S906B using ShortWingPipers.Org mobile app

[PACERGUY]

Same as other motors, less fouling, longer life buy one set and be done with it.
DENNY