Distributor Springs Again
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Junior User
Joined: Nov 2003
Posts: 70
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From: California
Distributor Springs Again
Well I ordered the Crane distributor kit, and that solved the performance problem completely.
My question is what is the practical performance difference between the range of spring combinations in the Crane Kit, and should i be using the weakest springs or strongest ones, According to the instructions the springs allow a 700 rpm range to full advance, 3100 to 3800 rpm's. I used springs that put me into the middle some place to get on the road again. Most of my driving is short commutes to work and moving around in 3rd gear on gravel mountain roads.
My question is what is the practical performance difference between the range of spring combinations in the Crane Kit, and should i be using the weakest springs or strongest ones, According to the instructions the springs allow a 700 rpm range to full advance, 3100 to 3800 rpm's. I used springs that put me into the middle some place to get on the road again. Most of my driving is short commutes to work and moving around in 3rd gear on gravel mountain roads.
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
In a perfect world, you want as much timing in as the motor will take(without pinging and such). The lighter the spring, the sooner it will come on. As long as you don't have detonation, you're good to go.
Larry
Larry
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Junior User
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From: California
thanks Frieghtrain
Thats what seemed logical, for my driving but I picked someplace in the middle, but i think I will go to the lighted combination after driving it. You helped me with my 73 f100 4X I bought new, with a 360 stroked out to a 390 , I also have a 70 Bronco; a work in progress.
Posting Guru
Joined: Jul 2003
Posts: 2,232
Likes: 1
From: Colville, Washington
My 428 has a stock dizzy with two light stock springs. One is adjusted to be slightly stretched at rest and the other has some slack in it. I have had good luck with running lots of advance in my motors, but don't get into detonation!
Putt
Putt
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From: California
Distributor Advance
When i opened the dizzy the light spring looked OK and Larger spring had some slack, not having looked before i had nothing to compare. With just Centrifical there was supposed to be 13.5 degrees @2K, but I had that at 1200, and I was off the scale before I reached 2K. After I replaced the springs I not longer had the huge dead spot in the lower RPM range. I had a slight hesitation for sometime that i couldn't correct with carb adjust, aditives, and all the normal tune-up fixes.
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