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Lycoming Sparkplugs doubt

A

ALMARTON

Well Known Member
Hello there,

I've got a RV7A with a Lycoming 180 hp type YIO-360-M1B HORIZONTAL INDUCTION

which sparkplugs is best for that engine? Champion UREM38E, UREM40E or UREM37E?

Thanks in advance
 
I am a fan of the UREM37BY as it is designed to minimize lead fouling problems. It requires the smaller caps on the harness though.

Larry
 
lr172 said:
I am a fan of the UREM37BY as it is designed to minimize lead fouling problems. It requires the smaller caps on the harness though.

Larry
Click to expand...

+1 on the UREM##BYs...

Flew with them in the Mooney 205 and the bottoms of the old RV-7 before I switched to LSE P3 & all automotive..
 
Ok tks but I don't want to do any modifications. And I operate LOP so it does not carbonize as much.
 
Fine wire, UREM38S, last longer and not subject to lead fouling like the std plugs.
 
Walt said:
Fine wire, UREM38S, last longer and not subject to lead fouling like the std plugs.
Click to expand...

Hi what you mean with "fine wire" I'm Brazillian don't get slangs...

Another question is the UREM38S will fit where goes a UREM38E with no modifications only advantages? My current issue with this engine is that it is hard to start. A spark plug gap adjustment was made and it got much better but I will still change all sparkplugs and do a magneto setting

Only asking opinions on which is the best sparkplug to go without modifications
 
ALMARTON said:
Hi what you mean with "fine wire" I'm Brazillian don't get slangs...

Another question is the UREM38S will fit where goes a UREM38E with no modifications only advantages? My current issue with this engine is that it is hard to start. A spark plug gap adjustment was made and it got much better but I will still change all sparkplugs and do a magneto setting

Only asking opinions on which is the best sparkplug to go without modifications
Click to expand...

Looks like the price has gone up a bit since last time I purchased:

https://www.aircraftspruce.com/catalog/eppages/temptestplugs12.php?clickkey=10263
 
lr172 said:
I am a fan of the UREM37BY as it is designed to minimize lead fouling problems. It requires the smaller caps on the harness though.

Larry
Click to expand...

I'm using the REM37BY with no modifications to the harness.
 
Walt said:
Looks like the price has gone up a bit since last time I purchased:
Click to expand...
WOW! You ain't a kiddin' Like a 50% increase in 24 months.

But regarding mtx Walt, do you ever find you have to clean or re-gap fine wire plugs?

George
 
BlndRvtr said:
WOW! You ain't a kiddin' Like a 50% increase in 24 months.

But regarding mtx Walt, do you ever find you have to clean or re-gap fine wire plugs?

George
Click to expand...

Maybe a little cleaning on the bottoms but nothing like the gobs of lead found in the massive electrode, never had to gap them and on avg will last about 1K hrs compared to about 500 avg on massive. When the gap goes out of limits is when I call it worn out.
 
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