r43ts vs r45ts
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Joined: Apr 2007
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From: Rockford Illinois
r43ts vs r45ts
I've got a 79 with a 350, 10 to 1 compression, comp cams 268 194 world products heads. The stock 350 uses r45ts, would I be better off going with the colder r43ts"s?
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From: Corsicana, Tx
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Only the plug can answer that question. How does it look? *Reading* plugs is a little bit of an art......but if you do a little research it can truly give you a *window* into the inside of your motor.
I usually run relatively hot plugs 99% of the time. Plugs in my 540 stay clean....and last forever. I've never had issues even though I have a fair sized cam and a Dominator carb. They show to be a little warm when I'm dyno playing or at the track..but I usually leave them in there anyway. They never miss from being fouled out.
JIM
I usually run relatively hot plugs 99% of the time. Plugs in my 540 stay clean....and last forever. I've never had issues even though I have a fair sized cam and a Dominator carb. They show to be a little warm when I'm dyno playing or at the track..but I usually leave them in there anyway. They never miss from being fouled out.
JIM
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Joined: Aug 2005
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From: West Central Florida
The colder plug will not fire as easily with higher compression, and will foul quickly if you idle alot or cruise at low rpm alot. Also, with more compression you need a smaller gap. Where 79 stock required .045 gap, you'll probably need .035 gap to fire across the distance.
Le Mans Master
Joined: Apr 2007
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From: Graceland in a Not Correctly Restored Stingray
The colder plug will not fire as easily with higher compression, and will foul quickly if you idle alot or cruise at low rpm alot. Also, with more compression you need a smaller gap. Where 79 stock required .045 gap, you'll probably need .035 gap to fire across the distance.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Found something that may be of interest on this topic...
http://www.nhra.com/dragster/1999/is...echnology.html
http://www.nhra.com/dragster/1999/is...echnology.html
