Spark Plug Question !
Thread Starter
Instructor
Joined: Mar 2007
Posts: 183
Likes: 0
From: Corpus TX
Spark Plug Question !
Im tring to find sum desent plugs but i have gmpp bowtie heads and they call for a plug with a 3/8 reach or .3750 . I also like the ngk plugs but when i do a search on my model year the ngk # 2869 plug has a .460 reach which is longer .Is it ok to run a longer plug in my aplication ?Almost all the plugs out there are .460 reach would that much more make a differance .I called NGK and the only plug they have in a 3/8 reach is sum sort of plug you can use on chain saws and crap like that its a BPMR-6-F and its a 6 in the heat range which i think is too cold .
Drifting
Joined: Oct 2007
Posts: 1,458
Likes: 1
From: Collinsville MS
St. Jude Donor '08
I would be worried about a longer reach hitting the piston. You might have to do some measuring first with the engine at TDC.
Are they new heads, if not, what were the previous plugs?
I couldnt find an automotive ac plug with a reach less than 1/2".
Are they new heads, if not, what were the previous plugs?
I couldnt find an automotive ac plug with a reach less than 1/2".
Last edited by L82shark; Feb 14, 2008 at 04:27 PM.
Thread Starter
Instructor
Joined: Mar 2007
Posts: 183
Likes: 0
From: Corpus TX
No they arnt new heads i got them used but with no old plugs .Thats what im worried about it hitting the piston ! I just wonder how much room i have to play with before it does hit the piston ?
