another spark plug question
Thread Starter
Pro
Joined: Mar 2004
Posts: 610
Likes: 8
From: bellflower ca
another spark plug question
I was using NGK TR6 with 125 shot of nitrous, but just bumped it up to 150. Do I keep the same plug or go up to thr TR7s? What's the gap for the TR7s if that's what I need? Thanks
Drifting
Joined: Jun 2006
Posts: 1,702
Likes: 1
Run the TR7's @.035 and pull a minimum of 5* timing to be safe. The TR6's have the extended tip...not recommended for nitrous applications.
Drifting
Joined: Jun 2006
Posts: 1,702
Likes: 1
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
I learned the best way to choose a plug is to go with the coldest plug that doesn't cause you problems as opposed to the most aggressive plug you can get away with.
The non-projected tip #7 (3346) are the way to go with any significant boost or nitrous with a #8 (1049) in the #7 cylinder position for good measure.
Melting Slicks
Joined: Mar 2008
Posts: 2,412
Likes: 4
From: Houston/Dayton Texas
Getting away with it and it being a wise decision to do are 2 totally different things. Not trying to be a smart @ss, but trying to get my point across.
I learned the best way to choose a plug is to go with the coldest plug that doesn't cause you problems as opposed to the most aggressive plug you can get away with.
The non-projected tip #7 (3346) are the way to go with any significant boost or nitrous with a #8 (1049) in the #7 cylinder position for good measure.
I learned the best way to choose a plug is to go with the coldest plug that doesn't cause you problems as opposed to the most aggressive plug you can get away with.
The non-projected tip #7 (3346) are the way to go with any significant boost or nitrous with a #8 (1049) in the #7 cylinder position for good measure.
Pro
Joined: Jul 2008
Posts: 612
Likes: 17
From: Coatesville PA
Getting away with it and it being a wise decision to do are 2 totally different things. Not trying to be a smart @ss, but trying to get my point across.
I learned the best way to choose a plug is to go with the coldest plug that doesn't cause you problems as opposed to the most aggressive plug you can get away with.
The non-projected tip #7 (3346) are the way to go with any significant boost or nitrous with a #8 (1049) in the #7 cylinder position for good measure.
I learned the best way to choose a plug is to go with the coldest plug that doesn't cause you problems as opposed to the most aggressive plug you can get away with.
The non-projected tip #7 (3346) are the way to go with any significant boost or nitrous with a #8 (1049) in the #7 cylinder position for good measure.
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Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
It runs safer. This is only catering to high-boost motors that need to play it conservative with the hot #7 cylinder. It's a known fact that #7 is this way. I would run all 8's but they foul much more easily due to the lack of heat, so I keep one in #7 only and the rest get 7's.
Pro
Joined: Jul 2008
Posts: 612
Likes: 17
From: Coatesville PA
It runs safer. This is only catering to high-boost motors that need to play it conservative with the hot #7 cylinder. It's a known fact that #7 is this way. I would run all 8's but they foul much more easily due to the lack of heat, so I keep one in #7 only and the rest get 7's.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
If you properly read your plugs using a magnifier and see any signs of detonation whatsoever on #7, then buy an 8 plug and stick it in there. I don't really think it's necessary on a 150 shot, but if you get froggy and jump to a 250, don't even bother asking. 
Pro
Joined: Jul 2008
Posts: 612
Likes: 17
From: Coatesville PA
Melting Slicks
Joined: Nov 2007
Posts: 2,197
Likes: 2
From: Niagara Falls NY
St. Jude Donor '08-'09
Hey Smartass.Don't be getting froggy till that knee heals.
