[7T2]

Originally Posted by Daniel Barton

normally when I have done a head like this with no chamber in it they also dont have a plug hole located and we have done that last trying to get it as close to the center as possible.

i concur with the ford engineer-
adequate plug cooling requires careful consideration of surrounding liquid and solid thermal conductivity coefficients for proper cooling. per suggestion, arbitrary plug placement wont cut it in most castings, although SOME latitude of placement can be gained from proper thin wall design around said areas for air cooling. at best, it is a compromise.

jim

[Daniel Barton]

Originally Posted by 7T2

i concur with the ford engineer-
adequate plug cooling requires careful consideration of surrounding liquid and solid thermal conductivity coefficients for proper cooling. per suggestion, arbitrary plug placement wont cut it in most castings, although SOME latitude of placement can be gained from proper thin wall design around said areas for air cooling. at best, it is a compromise.

jim

Yes Jim, thats how we did it... we just threw the head in the bridgeport and wherever it landed that was where the plug bore went, our process was extremely arbitrary, more like a game of pin the tail on the donkey... all it was capable of was setting the national record in its competition eliminator class, doing well at the divisional level, winning a national event and running .72 under the index... I guess even a blind squirrel gets a nut every once in a while huh???? Nice try!

[7T2]

good for you!
a few short duration blasts and claimed performance trumps everything!
put that same logic on a street/strip car that sees mileage and accumulated heat, and youve got a warranty claim if youre a manufacturer!
perhaps i should respond to the guy whose spark plug threads are galled as you have me:

Originally Posted by Daniel Barton

Yes Jim, thats how we did it... we just threw the head in the bridgeport and wherever it landed that was where the plug bore went, our process was extremely arbitrary, more like a game of pin the tail on the donkey... all it was capable of was setting the national record in its competition eliminator class, doing well at the divisional level, winning a national event and running .72 under the index... I guess even a blind squirrel gets a nut every once in a while huh???? Nice try!

if he still demands restitution, then he obviously doesnt appreciate your "blind squirrel" technique- LOL
jim

[Daniel Barton]

Originally Posted by 7T2

good for you!
a few short duration blasts and claimed performance trumps everything!
put that same logic on a street/strip car that sees mileage and accumulated heat, and youve got a warranty claim if youre a manufacturer!
perhaps i should respond to the guy whose spark plug threads are galled as you have me:



if he still demands restitution, then he obviously doesnt appreciate your "blind squirrel" technique- LOL
jim

First off this is the race section, i thought I would remind you of this since it appears to have slipped your mind, we are speaking of "race" engines not some street car in your scenario. Secondly, I have not the slightest clue as to what or whom you are speaking about in your galled plug thread comment... are you drinking when you post???