Bob Engle Posted December 9, 2017 Share Posted December 9, 2017 Tinker needs a pushrod and rocker arm to get the car running to deliver Christmas presents. Pushrod is 11 1/4" long, 5/16" diameter with 1/4X28 tpi. Casting # for the rocker arm is 35187, photos below, any help would be appreciated. Merry Christmas to all Bob Engle Link to comment Share on other sites More sharing options...
Mark Shaw Posted December 10, 2017 Share Posted December 10, 2017 Bob, Are these parts missing? If they are just worn or bent, they should be repairable. The rocker may need some weld to replace wear, and the push rod could be annealed, straightened and case hardened to use it again... Link to comment Share on other sites More sharing options...
Bob Engle Posted December 10, 2017 Author Share Posted December 10, 2017 The rocker can be welded up on the face and ground down. The Push rod broke off about 1/4" of threads. The intake valves on this engine are about 5/16" shorter than the exhaust valves. With the short valve and the worn rocker, the adjustment was out on the end. The push rods have a centerdrill hole on the threaded end and the rod broke at the bottom of this drilled hole. I made a case hardened cap that I put on the valve stem to allow the damaged pushrod to be used. I was hoping to find a spare pushrod from someone. If I can't find one, I'll have a local machine shop make one for me. My lathe is not suitble for thread cutting. Modern alloy steels should work great and I can case harden the ball end. I don't see a need to harden the threaded end. Bob Engle Link to comment Share on other sites More sharing options...
Terry Wiegand Posted December 11, 2017 Share Posted December 11, 2017 Bob, I have quite a few 1916 style rocker arms. These arms do not have the oil wick on the pivot bushing, so they would not be correct for your car's engine. I have 6 NOS 1916/1917 pushrods. However, from the description that you gave of what you have they are not like yours. I will get some photos posted tomorrow to show what I have. I am wondering if the pushrods on your engine have been changed out at some point in time. Your photo doesn't look like what I have. Terry Wiegand South Hutchinson, Kansas 1 Link to comment Share on other sites More sharing options...
Bob Engle Posted December 11, 2017 Author Share Posted December 11, 2017 Terry, I'll weld up the rocker arm as it's a simple fix. I am not knowledgeable enough about these cars to see what's correct and what's been cobbled from other parts. I have not gotten a teens parts manual yet. My 1930 manual does list some parts back to 1918, but very few. If your push rods are round on one end and have 1/4X28 tpi on the other end and are 11 1/4" long I would be interested in one. I was planning to get one made, but I would want to make a correct correc one. I do have a photo of a 1916 engine and the push rods appear to look like mine. Bob Link to comment Share on other sites More sharing options...
Mark Shaw Posted December 11, 2017 Share Posted December 11, 2017 Bob, These push rods come with the adjustable ball and measure 11.5" to fit into the rockers shown. Let me know if you can use this combination to get your car going for Christmas deliveries. Link to comment Share on other sites More sharing options...
Brian_Heil Posted December 11, 2017 Share Posted December 11, 2017 Check with Dean Tryon too. He was having pedestals and rockers re-cast. Was looking for 'customers' to up the order, share the pain. Not sure where he is with the project. Link to comment Share on other sites More sharing options...
Terry Wiegand Posted December 11, 2017 Share Posted December 11, 2017 Bob, here are the photos as promised. Terry Wiegand South Hutchinson, Kansas Link to comment Share on other sites More sharing options...
Mark Shaw Posted December 12, 2017 Share Posted December 12, 2017 Looks like Terry has the right ones... Link to comment Share on other sites More sharing options...
Bob Engle Posted December 12, 2017 Author Share Posted December 12, 2017 Thanks Terry and Mark. I'll pass on your offers as my push rods are different than your shown. I am having some made to duplicate the ones in my engine. I am curious however to know if the 1917 D45 engine had different valve stem heighths. My Intake stems are about 5/16" shorter than the exhaust stems. I suspect that the valves were changed to aome modern altenative. The shorter stems cause the adjustment to be further out neer the end of the pushrods. Bob Engle Link to comment Share on other sites More sharing options...
Terry Wiegand Posted December 13, 2017 Share Posted December 13, 2017 Bob, the 1916 and 1917 engines shared the same intake and exhaust valve head diameters, stem diameters, and stem lengths on all valves. 1918 models was when things started changing. Terry Wiegand South Hutchinson, Kansas Link to comment Share on other sites More sharing options...
Bob Engle Posted December 14, 2017 Author Share Posted December 14, 2017 Thanks Terry. Looks like my valves were replaced with shorter stem ones. I have no plans to do anything with the valves as compression is good and consistent across all cylinders. I believe my push rods are not original also, but I will keep them for now. All 12 are the same. Bob Engle Link to comment Share on other sites More sharing options...
NudeAutoMall Posted September 21, 2018 Share Posted September 21, 2018 On 12/11/2017 at 9:19 AM, Mark Shaw said: Bob, These push rods come with the adjustable ball and measure 11.5" to fit into the rockers shown. Let me know if you can use this combination to get your car going for Christmas deliveries. Mark does your rockers have the oil wicks? Link to comment Share on other sites More sharing options...
Bob Engle Posted September 22, 2018 Author Share Posted September 22, 2018 Thanks for the offer, I made a replacement pushrod and am back in operation. I plan to take it to Hershey Oct 13, 2018. I wan tto get the 100 year medallion. I hope the weather is good as I only have an open trailor and won't go with rain. Bob Engle Link to comment Share on other sites More sharing options...
dibarlaw Posted September 23, 2018 Share Posted September 23, 2018 Bob: It will be good to see you and your car at Hershey. Link to comment Share on other sites More sharing options...
jscheib Posted September 24, 2018 Share Posted September 24, 2018 Bob, Don't forget the BCA 100 year award. John Link to comment Share on other sites More sharing options...
Larry Schramm Posted September 25, 2018 Share Posted September 25, 2018 12 hours ago, jscheib said: Bob, Don't forget the BCA 100 year award. John To get the 100 year Buick medallion you must bring your vehicle to a national meet according to the rules written by the board at the time of starting the program. Link to comment Share on other sites More sharing options...
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