bc.gold 3,403 #1 Posted February 13, 2019 (edited) No longer able to adjust ignition contact points to the proper gap leads me to believe that after 45 years the plunger has worn down. The plunger rod is made from a material called Spauldite which is a vulcanized cellulose British patent for vulcanized fiber was obtained in 1859 by the Englishman Thomas Taylor. New OEM Points Plunger made of Genuine T-537 Spauldite rod. Edited February 13, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #2 Posted March 7, 2019 (edited) Note to self, plunger worn .0005 both ends remained squared well within usable spec. The problem is that someone installed a cheap set of offshore ignition contact points and the tungsten pads when closed do not make full surface contact. When closed put to the light a huge gap is visible and dressing with a diamond file will not correct the problem as the anvil that holds the stationary contact is gimped right from the factory. No brand logo or part numbers visible. Tomorrow when I go to Napa for new contacts will take jewelers loupe to closely examine the new points. It's no fun having your snow blower quit half ways through a job. Edited March 7, 2019 by bcgold Share this post Link to post Share on other sites
Sarge 3,464 #3 Posted March 7, 2019 My great Uncle is a Master Machinist and is about the most detail-driven man I know. Watching him spend a couple of hours to "square" a brand new set of points is almost like watching paint dry - but after his work, you wouldn't have to touch that distributor/ignition system for a very, very long time. He built the 8,000 rpm Chrysler 458 big block for my Dad back in '72 - that car could run 10.68 in the quarter mile on the old slicks after being driven to the track, then driven home easily. Even brand new factory point sets are rarely ever all that close to closing squarely on the contacts - spend some time tuning them into each other after they are installed on the engine. Sarge Share this post Link to post Share on other sites
bc.gold 3,403 #4 Posted March 7, 2019 The quote below from our local small engine repair shop next village over blew me away, one to two weeks delivery Hmm maybe comeoing off eBay. Ignition parts for my Onan. Hi, I can order 2 of each for you. It'll take 1-2 weeks to receive Points $32.99ea Condensor $27.99ea tax not included shipping approx. $15-$20 Share this post Link to post Share on other sites
bc.gold 3,403 #5 Posted March 7, 2019 (edited) On 3/7/2019 at 3:44 PM, bcgold said: The quote below from our local small engine repair shop next village over blew me away, one to two weeks delivery Hmm maybe comeoing off eBay. Ignition parts for my Onan. Hi, I can order 2 of each for you. It'll take 1-2 weeks to receive Points $32.99ea Condensor $27.99ea tax not included shipping approx. $15-$20 March 08/19 telephone call to Cummins Sales and Service in Winnipeg. OEM price in Canadian currency. Breaker points, part number 160-0002 $22.44 Condenser part number 312-0069 $19.47 Edited March 9, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #6 Posted March 10, 2019 (edited) Breaker points, Made in the U.S.A.. Edited March 12, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #7 Posted March 11, 2019 (edited) Here is what I have in mind to trigger the magnetic pick up, Edited March 12, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #8 Posted March 11, 2019 (edited) Murphy's Law Edited March 12, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #9 Posted March 11, 2019 (edited) The Onan is the perfect candidate, Edited March 12, 2019 by bcgold Share this post Link to post Share on other sites
bc.gold 3,403 #10 Posted March 11, 2019 (edited) Since this thread has had no reply's had to take the discussion offsite. Edited March 12, 2019 by bcgold Share this post Link to post Share on other sites
