FBO springs

72SwingerJosh said
anyone know what the springs from FBO do for advance rate. I got the plate and springs along with a worthless book that is just propaganda for FBO and no real information. The springs came in a bag and no chart or description on what the combinations of springs do. The book is worthless and I recommend not ever buying it, the book is no help in recurving a distributor just a sales pitch. So any real information would be appreciated thanks.

If your not happy with the information in the book just return it for a credit.

Standard in the industry is Gold, Silver, Black the gold being the lightest.

If you have a problem with anything you have purchased from us our phone number is on all the paperwork and a business card is in every package, just pickup the phone and call us, I'm here Monday - Thursday 8AM to 3PM Pacific time and I answer the phone even if I'm not in the office at just about any reasonable time. You can also text to my number 24 hours a day and I'll get back to you.

A Mopar distributor spring rate is controlled by the tension of the spring and the pin adjustment. If it's a Mopar distributor then you rotate the pin and it will move .060 in each direction to fine tune the tension on the spring, if it's a Chinese copy then it may have a tab that can be bent to change the tension. A chart would be worthless unless you know where the pin is set or how far the tab has been bent. These distributors have been made by dozens of suppliers from China, Taiwan and others over the years and they all have different weight specs giving you different advance rates. Looking down from the top the flange on the spring pin should be a "D" shape which designates an eccentric elliptical design to move the pin in and out. Some of the import distributors use the "D" shaped flange to fool you into thinking it's a real Mopar distributor but you'll discover that the pin does not move.... but they're cheaper.....

Posting these types of technical questions on web boards will usually yield a dozen answers probably mostly all wrong.

Just pick up your phone.