what plugs would be reccomended for a 113
Yessir! Love'em, best plug I've used yet. I did notice my motor responded nicely to one step colder in heat range and has not fouled them out. In my small block Chevy racing days, I used to use like J-4's with 12:1 compression on the street. They would work great for a couple of days but then had insufficient heat to burnoff deposits. I was constantly changing plugs because I was addicted to the small bump up in performance.DEW2112 said:Tote, Are you using the DCPR8E on your 95" Twinkie?
A spark plugs heat range is determined by, among other things like design and materials, the amount of protrusion the electrode tip is into the combustion chamber. A minimum amount of heat is needed to keep the tip of the insulator clean enough to not foul out and cease working. It also has to be low enough in temperature that it does not cause pre-ignition by glowing orange hot. Something like, between 500C and 800C is the right range. What I've noticed is that by experimenting with different heat range plugs, you can see what combination your engine likes with the amount of fuel you are getting and the spark advance timing in relation to the amount of protrusion into the chamber and the resultant kernel of flame that starts from the spark gap and then extends out to a flame bubble that finally goes bang in a combustion chamber, hopefully reaching peak pressure around 16 - 18* ATDC. All these things interact and play together to give different results and through experimentation, you can figure out what is right for your situation.113DELUXE said:what benefit would i get from running a colder plug if any
Try the plain old DCPR8E first. Keep the cost of the experiment down, they should be under $2 each and set the gap at 0.040". Buy a set of 7E's & 9E's also and see how those react too. The DCPR7E is the standard heat range. Please report your findings, run them for awhile and see how they do.DEW2112 said:I will be experimenting with the DCPR8EIX this weekend.
Totenkopf said:Try the plain old DCPR8E first. Keep the cost of the experiment down, they should be under $2 each and set the gap at 0.040". Buy a set of 7E's & 9E's also and see how those react too. The DCPR7E is the standard heat range. Please report your findings, run them for awhile and see how they do.