Dan Marx 8 Posted March 14, 2019 Share Posted March 14, 2019 (edited) This is a standard set of Light Six pistons, with bushings, that have been on the shelf for many years. Only one original box has survived, $200 plus postage. Contact Dan at 803-549-two one eight seven. Edited March 14, 2019 by Dan Marx added information. (see edit history) Link to post Share on other sites
Stude Light 288 Posted March 14, 2019 Share Posted March 14, 2019 For the Light Six in 1920-22 they used a 3 ring piston with an 11/16" piston pin and unbushed. Then sometime in 1922 they switched to a 4 ring piston with a bushed pin. In 1924 they changed to a larger diameter (7/8") piston pin. Rods and piston pins need to match pin bore size in pistons. Link to post Share on other sites
Dan Marx 8 Posted March 14, 2019 Author Share Posted March 14, 2019 OK, here's what I have; 4 ring piston, 3.5 in diameter; brass bushings, 1.0 in diameter. Light Six 1922-23? Thanks Dan Link to post Share on other sites
Dan Marx 8 Posted April 7, 2019 Author Share Posted April 7, 2019 btt Link to post Share on other sites
Dan Marx 8 Posted April 7, 2019 Author Share Posted April 7, 2019 The replies have indicated these may not be Light Six pistons, any one have an application for this piston set? As measured they are 4 ring pistons, 3.5 in diameter; brass bushings, 1.0 in ID. Thanks Dan Link to post Share on other sites
nzcarnerd 1,001 Posted April 8, 2019 Share Posted April 8, 2019 The bore of 3.5 " suggests the bigger earlier Light Six - 1919 on - which became the Special Six in 1920 when the 'new' Light Six came out. Link to post Share on other sites
stude24 9 Posted April 8, 2019 Share Posted April 8, 2019 The Erskine logo on the box indicates that these were likely made after the Erskine was introduced for the 1927 model year. By chance is there a part number on the box or a casting number inside the pistons? Link to post Share on other sites
Spinneyhill 1,430 Posted April 9, 2019 Share Posted April 9, 2019 Chiltons shows a piston 3.5" dia., 4 ring grooves 3/16" wide. Piston height is 411/16", centre of pin to top of piston 29/16", distance between bosses 1.25", no set screw hole and 1.000" diameter pins. Distance between bosses is the distance inside the piston between the pin bosses. That is for a 1927 EQ Special 6. This version of Chiltons begins at 1927 so if that engine was used earlier, those pistons may have been used then too. Looking above, @nzcarnerd's post might show it was used from 1919. Link to post Share on other sites
Dan Marx 8 Posted April 16, 2019 Author Share Posted April 16, 2019 Thanks for the reply and looking up the piston info. Yes these piston measurements are exactly what you stated. So, these fit an EQ Special 6, that may go back to 1919. On 4/8/2019 at 6:19 PM, stude24 said: The Erskine logo on the box indicates that these were likely made after the Erskine was introduced for the 1927 model year. By chance is there a part number on the box or a casting number inside the pistons? No part number or casting number. Thanks Dan Link to post Share on other sites
STUDE48 19 Posted April 20, 2019 Share Posted April 20, 2019 These are likely special six pistons, 19 to 26. In 19 the special six was called the light six and renamed in 1920 to the special six. As the new light six line was introduced in 1920. I believe the special six might have been exported as the light six also. Link to post Share on other sites
Stude Light 288 Posted April 22, 2019 Share Posted April 22, 2019 When it comes to the early vehicle names, sometimes it's just easier to use the vehicle models instead. Based on what has been discussed above these are part number 32100 and should fit: 1919-1921 EH 1922-1924 EL 1925-1927 EQ Depending on the year the EH model was called a Light Six or Special Six so its gets confusing. ELs and EQs were only called Special Six. Hopefully you find a buyer. Link to post Share on other sites
Dan Marx 8 Posted August 28, 2020 Author Share Posted August 28, 2020 btt Link to post Share on other sites
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