michel88 Posted June 3, 2014 Share Posted June 3, 2014 I put new spark plugs in my 1951 Ford about 25 years ago when I bought it from the original owners family. I put in Champion H-10 which is what the shop manual specified. I think it's about time to change them but I am confused on what plugs to use. The Champion H-10's do not seem to be available. When I go to websites for spark plugs they list plugs like NGK which would be fine but I am concerned if they are the correct heat range etc. I don't want to do any damage to the flathead V8 engine. Can anyone give me guidance? Thanks! Link to comment Share on other sites More sharing options...
Waldren Posted June 3, 2014 Share Posted June 3, 2014 Earl Brown has the H-10 I just got them for my V-12 Link to comment Share on other sites More sharing options...
michel88 Posted June 3, 2014 Author Share Posted June 3, 2014 Thanks so much for this info. I called Earl Brown but got his voice mail and left a message. I will order the H-10's from him. Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 3, 2014 Share Posted June 3, 2014 There was some discussion a few weeks ago about spark plugs. The consensus is, Champion plugs aren't what they used to be. Most people have switched to some other make. Link to comment Share on other sites More sharing options...
Dave Henderson Posted June 5, 2014 Share Posted June 5, 2014 I have a set of 8 2-rib "coke bottle" blued-base Champion H10's. I believe this version was produced only up to 1947, thus is probably the only correct H10 plug for cars of that year and prior. They appear as new with electrodes showing no erosion, but are boxed under the "NU-LIFE" brand. Box says "The plug in this container has been serviced by Nu-Life Spark Plug Service of Pittsburgh". PM me if interested in acquiring. Link to comment Share on other sites More sharing options...
michel88 Posted June 5, 2014 Author Share Posted June 5, 2014 Thanks Rusty, I saw that discussion but am hoping for the best on the Champions. I was concerned that the newer brands of plugs like NGK may not be the correct heat range. I am having a hard time getting the old plugs out. I have used PB Blaster penetrating oil but am having a hard time breaking them loose. I have 3 out and once they break loose they unscrew smoothly. I guess I was stronger 25 years ago. Any suggestions? Link to comment Share on other sites More sharing options...
skyler Posted June 9, 2014 Share Posted June 9, 2014 too late for this, but I always put a small amount of never seize on plug threads and you could leave them in there for more than 25 years and they will come out easier than yours are now. sometimes you can try tightening a stuck item a little bit and if it moves ever so slightly it will then loosen up to remove. capt den Link to comment Share on other sites More sharing options...
michel88 Posted June 9, 2014 Author Share Posted June 9, 2014 Good news, the old plugs are out, and it worked by tightening then loosening. taping with a hammer on a breaker bar. The champions made the car run much stronger. I put a small amount of anti seize compound on the threads. Skyler thanks for your advice. Link to comment Share on other sites More sharing options...
skyler Posted June 10, 2014 Share Posted June 10, 2014 you are welcome. simple tricks that I learned from my grandfather, a wiser and more patient man than me. capt den Link to comment Share on other sites More sharing options...
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