RPM's
Ok boys and girls. Here is what I did today..
First off I changed back to factory jets in the 670. I reinstalled the 65's, the carb guy gave me 69's.:prayer: I also pulled my dizzy and went to do the curving thing to it. Well my MP dizzy was a different style. I didnt have to weld up any slots, I had two set screws that allowed you to adjust a plate to limit the amount of mechanical advance. Hell ya, that was awesome. I then ran to the parts store and picked up the Mr. Gasket kit that had the springs in it. I installed the 2 black springs which seemed a little stronger than the pink springs that were originally in the dizzy. Reinstalled the dizzy into the car and proceeded to tune it.
So with the tuning, I did as in the one article that was posted. I used a vacuum gauge and found the best vacuum where the needle didnt bounce around. Took me some time because as I would turn the dizzy, the rpms would go up as would the vacuum, decided to check it and I was at about 45*:oops:
So backed it back down to about 10* and reset everything. I only had my idle at about 800 and it was rough, engine shaking and all that. So I bumped the idle up to 1000, then proceeded to twist the dizzy to find the highest vacuum. Whats that??? WOW the needle isnt bouncing any longer and I have about 15hg's of vacuum! :blob:I've never had vacuum this high at idle!:cheers: I grab the timing light and I was at about 22* initial. I decided to rotate a bit further to see if I could get it any higher. The vacuum gauge started to flutter so I reversed rotation and got it to smooth out. Yep 22* is the highest smoothest vacuum I could pull.
So I went to check total timing. I reved it up and I have 35* total. So 22* initial + 13* mechanical. Only thing I cant tell you is when its all in by. But it does come in slower than those pink springs. I didnt have anyone in the car to tell me what the rpms where.
I then moved on to the carb adjustment. Screwed the idle screws all the way in and it wants to run rough, yep thats what its suppose to do. Started backing them out at first a half turn, little by little I get the highest vacuum reading I could. Which was just over 15hg, (like a needle width over). Both screws are just shy of 1 full turn out.
Car is running smooth, so I decide to go take it for a drive. Mind you it was 90* today. I roll the windows down, and take off down the road. Watching the temp and all that. at first it held at 190*. Then I had a stop light. Crept to 200* Pulled into the gas station and filler it up. Heck with it, Im already 6 miles from home, might as well take the scenic route home. Highest the temp crept up to at a light was 210*. Now I dont have a shroud on this car but I will be looking for one at Mopars in the Park this weekend. Car seemed to run very good and very smooth. I kicked it down a few times to see what it would do. Only thing I noticed is that I have a delay/hesitation before the secondaries kick in (I have another post on that). Total distance driven was 18 miles today. Kicked it down about 4 times for a quarter mile or so and the gauge stayed put. It was still on full as I pulled in the garage... :blob:
So with that said. What do you guys think about what I have done? Think I nailed it?
Now