Author	[Modern View]
north puller 11-19-2012 17:59:06 74.198.9.100 Report to Moderator	The yellow is the old tq curve posted yesterday. The pink is the new curve. The only change was to change the distributor advance springs from the lightest ones in a recurve kit to the heaviest ones. Also my base timming likely has changed - i didnt check it before i pulled off the dizzy. [Reply]   [No Email]
mlpankey 11-21-2012 06:14:04 98.68.182.143 Report to Moderator	Re: farmall m update in reply to north puller, 11-19-2012 17:59:06   Most delco tractor distributors were originally set up to have the advance all in at 800 rpms [Reply]  [No Email]
MLPANKEY 11-21-2012 06:05:01 98.68.182.143 Report to Moderator	Re: farmall m update in reply to Jeff(WC)(MI), 11-19-2012 17:59:06   Quoting Removed, click Modern View to see There is also one online from circle track magazine as well. It goes as deep as bending the reluctor taps to ensure the initial spark timing is the same for all the cylinders and just noticed number 1. [Reply]  [No Email]
MLPANKEY 11-20-2012 07:51:35 152.85.8.33 Report to Moderator	Re: farmall m update in reply to HammerTime, 11-19-2012 17:59:06   mlpankey said: (quoted from post at 08:46:41 11/20/12) I think more initial timimg would move the pink peak back to the yellow peak . If I wanted the peak to be on the 700 side and falling on the 300 side of graph I would retard the cam a few degrees from where it is now. Cause you have not shifted peak torque yet with spark timing you just lowered the peak torque with spark timing. Cause both peak the highest at the same pto rpm making me think its a direct link to the cam . What ever rpm the engines at between 375 pto rpm and 400 pto rpms is the engines peak torque This post was edited by MLPANKEY at 07:58:43 11/20/12 2 times. [Reply]  [No Email]
mlpankey 11-20-2012 06:25:55 152.85.8.33 Report to Moderator	Re: farmall m update in reply to north puller, 11-19-2012 17:59:06   Yes your ground speed is down and your ability to lug is the biggest factor. When you put stiffer spring in it now takes more rpm to sling the wieghts out and advance the timming . The dyno shows that your initial timming is low making the peak torque lower after the spring change . It also shows that when the rpms get higher requiring less initial advance timming the the torque runs flatter and higher. typical of needing less timing to pull on the top end of rpm range. hope this helps [Reply]  [No Email]
north puller 11-20-2012 07:08:33 68.171.231.82 Report to Moderator	Re: farmall m update in reply to mlpankey, 11-20-2012 06:25:55   Well I guess I'm gonna have to get the timming light out and start recording some numbers. So looking at what I have here, you think the low end rpm range needs more initinal timming? So in order to keep the same high end rpm timming I either need a stiffer spring yet or a distributor with less total advance. [Reply]  [No Email]
mlpankey 11-20-2012 07:46:41 152.85.8.33 Report to Moderator	Re: farmall m update in reply to north puller, 11-20-2012 07:08:33   I think more initial timimg would move the pink peak back to the yellow peak . [Reply]  [No Email]
MLPANKEY 11-20-2012 04:31:57 152.85.8.33 Report to Moderator	Re: farmall m update in reply to Lamont, 11-19-2012 17:59:06   north puller said: (quoted from post at 18:59:06 11/19/12) The yellow is the old tq curve posted yesterday. The pink is the new curve. The only change was to change the distributor advance springs from the lightest ones in a recurve kit to the heaviest ones. Also my base timming likely has changed - i didnt check it before i pulled off the dizzy. cogratulations on considerably droping the torque curve in the 300 pto rpms to 500 pto rpm range. This post was edited by MLPANKEY at 04:32:19 11/20/12. [Reply]  [No Email]
north puller 11-20-2012 05:45:01 68.171.231.83 Report to Moderator	Re: farmall m update in reply to MLPANKEY, 11-20-2012 04:31:57   Well the tq curve isn't perfect yet. I still have work to do. What I did manage to do was get rid of the erratic spike in the curve. Got any helpful sugestions? I have different springs to try, different base timming to try, and if I can dig one up, a different advance plate to try. Recomendations? I need to tune the ignition timming to get the highest tq above 540 (pink curve) and the highest tq below 540 (yellow curve). By the way, at 300 pto rpm my ground speed is cut in half and the pull is over at that point anyway. [Reply]  [No Email]
504 11-20-2012 18:18:12 199.127.54.155 Report to Moderator	Re: farmall m update in reply to north puller, 11-20-2012 05:45:01   There is a great article in MOPAR Action magazine this month on timing and distributors. Starts on page 40. You can find it at the Wal-Mart magazine rack. It may be on line too. [Reply]  [No Email]