Recurve Duraspark

[falcon cobra]

Hey kenny, thats just what they need to know, I use to set dist. on the old sun machine's years ago, my 327 chev was set at about 12 to 14 at idle and was full in by 2600, by changing the springs and adding to the weights or shaving some off to get what you want...I still have access to a dist.machine at transmission kellys,where I worked a few years ago, good luck, and how much do they want for this service??

[redfalken]

He's going to it for $60. I've got the springs and tried to do it with Jeff's dial back timing light but the MSD was causing some pretty funky readings.

After the timings down I can finally move on to tuning the Weber!

[pbrown]

Kenny,

I would suggest have all the mechanical timing in a bit earlier. Shoot for 2500RPM.

[redfalken]

Thanks Pat. So what's the thought process to figure that out? I've tried reading through threads on other forums to see what others have done but it seems to be all over the place.

[pbrown]

Generally speaking, getting the advance in earlier will improve your throttle response and accelerate quicker. Getting it in too early will cause detention. Getting all of the mechanical advance in as early as possible without causing detonation is the goal. Mine is all in by 2200 RPM. Of course mine was set from the comfort of my sofa with a laptop.

[redfalken]

Picked up the DS II today. Hopefully I can install it tomorrow and go for a spin...weather permitting. I peeked in through the holes on the base plate and noticed he had flipped it to the 13R slot and replaced both springs with the Mr. Gasket kit springs which are lighter. I've heard some say to only swap one of the springs We shall see!

Here are the specs he emailed:

Advance begins at 800 rpm
22 deg of mechanical @ 2300
14 deg of vacuum advance
36 deg of total all in at 2560 rpm

[MacDee]

I did the "replace-only-one-spring" thing to mine, and I have to zing it pretty high, way more than 2500 rpm, I think, to get full advance. (Need to tee off the tach wire from the Street Fire box so I can use my test tach under the hood!) I really think I need install the other Mr. Gasket spring. My throttle response still sucks....