Bosch spark plug question W250T1?

[larry]

hi i have a question about a set of plugs i have ,.,, I just bought a older elan twin however in the tool box i found these bosch spark plugs they look unused and new but old ,,
and i dont know they will work or not?
the number is W250t1
will they be ok to use in a elan twin or not
250 cc
Dont want to wreck the engine by puttimg the wrong plug in..

thanks larry

[olyman]

That plug wont hurt your engine. It cross references to an NGK B8HS www.bayshorecad.com/Sleds/SparkPlugIndex.html#BOSCH%20to%20NGK

I run that plug in my 70 399 tnt engine. Typically the smaller the engine the hotter the plug you run. So use 'em. If anything they might foul, but you won't hurt your engine.

Here's a chart showing what was recommended for some Rotax engines. I don't see yours, but you can see the pattern.
www.teshio.com/oldski-doosleds/enginesparkplug.htm

[larry]

right on thanks olyman
#01!