spark plug question
Thread Starter
Advanced
Joined: May 2014
Posts: 81
Likes: 1
From: Washington nj
spark plug question
Hello all,
I have a 74 l82 that was modified to a 383 stroker. I have no specs on the motor as thats how I purchased the car. I changed the plugs and removed r44t plugs, r45ts were shown for the car assumably for the original motor. The tips of the new plugs looked to be a few mm's longer, really not that much longer. I now know the "s" is extended tip. Should the additional length be a concern with clearance issues inside because of the modified engine?
Thanks for the input.
I have a 74 l82 that was modified to a 383 stroker. I have no specs on the motor as thats how I purchased the car. I changed the plugs and removed r44t plugs, r45ts were shown for the car assumably for the original motor. The tips of the new plugs looked to be a few mm's longer, really not that much longer. I now know the "s" is extended tip. Should the additional length be a concern with clearance issues inside because of the modified engine?
Thanks for the input.
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
Plug tip length could be an issue in a motor with higher compression especially when using domed pistons. Without knowing your engine's specs, I would install the same type of plug that you removed, especially if the old plugs look good and the engine runs well.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
You should have all kinds of clearance with those plugs unless tour engine is a radical compression....The T means tapered seat...no washer is needed. Also the gap is best at .035.....irregardless the ignition system your using
