Good Lower Profile Spark Plug

[Treyfer]

I installed a 100cc 2 stroke on a newer aluminum Schwinn frame . Everything is good but I can't use a normal size NGK plug due to a smaller clearance between the top frame and angle of it , to the top of the plug itself . I can barely get the plug boot on . Can anyone please suggest a shorter profile spark plug of NGK or Champion brand to cross reference ??

 

[DieselTech]

I installed a 100cc 2 stroke on a newer aluminum Schwinn frame . Everything is good but I can't use a normal size NGK plug due to a smaller clearance between the top frame and angle of it , to the top of the plug itself . I can barely get the plug boot on . Can anyone please suggest a shorter profile spark plug of NGK or Champion brand to cross reference ??

Maybe a ngk B4-LM might work or a #3410 or like a j17-lm or j19-lm

 

[Triplehelix]

I run a NGK chainsaw plug. They are much shorter.

 

[Freddy Snottgrass]

Be careful with the shorter plugs. I ran a stubby type plug and it overheated on long runs.

Can your head be flipped around? I mean, if your plug is pointing to the rear, try rotating your head 180 degrees and point the plug forward.

 

[motoredjosh]

post a picture of the bike you may be able to adjust the lower mounts and trim the boot if it's the hard plastic kind

 

[Carcher]

post a picture of the bike you may be able to adjust the lower mounts and trim the boot if it's the hard plastic kind

Good idea on the plug reversal Zac lol flipping the head