rallyace Posted January 29, 2017 Report Share Posted January 29, 2017 I'm guessing that this has been asked before but I could not find anything in the archives. I just picked up a 218 inch motor and I want to convert it to a 230. I know that a 230 has a longer stroke will require a crank from a 230. What other parts will I need. Are the pistons the same or is the wrist pin location higher on the 230? Thanks, Mike Quote Link to comment Share on other sites More sharing options...
DonaldSmith Posted January 29, 2017 Report Share Posted January 29, 2017 I'm guessing that the rods are shorter for increased stroke. The experts will chime in. Quote Link to comment Share on other sites More sharing options...
DJ194950 Posted January 30, 2017 Report Share Posted January 30, 2017 The crank And rods are both required. Pistons, etc. all the same. If you were closer to Ca., I could offer parts for sale- But the crank weights a ton !!, more than my old back will even lift now. They are out there even the probably best is to find an older 230 complete motor to get parts out of and will most likely the cheapest way to get 'er done. Best of Mopar to ya, DJ 1 Quote Link to comment Share on other sites More sharing options...
plyroadking Posted January 30, 2017 Report Share Posted January 30, 2017 What about the cam? I would assume that with a longer stroke the duration would be different? Quote Link to comment Share on other sites More sharing options...
martybose Posted January 30, 2017 Report Share Posted January 30, 2017 (edited) Don't forget that you need a different flywheel for the 230 crank! Marty Edited January 30, 2017 by martybose typo 1 Quote Link to comment Share on other sites More sharing options...
48ply1stcar Posted February 1, 2017 Report Share Posted February 1, 2017 Why? why not just rebuild the 218. Quote Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted February 1, 2017 Report Share Posted February 1, 2017 52 minutes ago, 48ply1stcar said: Why? why not just rebuild the 218. More cubes = more gitty up and go. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted February 1, 2017 Report Share Posted February 1, 2017 58 minutes ago, 48ply1stcar said: Why? why not just rebuild the 218. as I read it he is doing just that, only opting for a few cubes by stroking it as the factory did with the 230 crank and rods.. Quote Link to comment Share on other sites More sharing options...
48ply1stcar Posted February 1, 2017 Report Share Posted February 1, 2017 (edited) I bought a 230 as a temporary fix while I suppose to rebuild the 218. I ended up having the 230 rebuilt after I couldn't get it running. In the long run I just should have rebuilt the 218 and saved myself time and maybe money. Also I ended up modifying the bell-housing and transferring all of the 6 volt and external parts from the 218 to the 230. I had to re-plum the internal oil lines so that I could reuse the 218 oil-pan, because the 230 oil pan didn't fit in the engine compartment. This does NOT apply in your case. Just Sayin. Edited February 3, 2017 by 48ply1stcar Quote Link to comment Share on other sites More sharing options...
Los_Control Posted February 1, 2017 Report Share Posted February 1, 2017 On 1/29/2017 at 5:46 PM, plyroadking said: What about the cam? I would assume that with a longer stroke the duration would be different? I would like to have the larger 230 myself. Seems that plyroadking is correct in the came should be different. Changing the rotating assembly would give you the cubic inches, but not change the way it breathes to handle the new volume. But searching the part numbers may prove they were the same. But having 2 trucks and 4 218's Seems I will be staying with the more common 218. *sigh* Quote Link to comment Share on other sites More sharing options...
48ply1stcar Posted February 1, 2017 Report Share Posted February 1, 2017 (edited) Just check these out. Although no project is the same. It was the little things that got me. The length of the crank required a modification of the bell-housing. Edited February 1, 2017 by 48ply1stcar Quote Link to comment Share on other sites More sharing options...
greg g Posted February 2, 2017 Report Share Posted February 2, 2017 (edited) Currently the car has a Dodge 230 in that runs good but has an appetite for oil. He has a line on a Plymouth 218, so he should have all the pieces to make the swap to the longer stroke motor while returning a "P" block back into the car with upgraded internals. Edited February 2, 2017 by greg g Quote Link to comment Share on other sites More sharing options...
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