Jerry B Posted December 18, 2017 Report Share Posted December 18, 2017 Can a internal bi pass engine be converted to external? I am putting a 1955 Plymouth 230 engine in my 1946 WC 1/2 ton pick up, and want to use the original thermostat housing. Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted December 18, 2017 Report Share Posted December 18, 2017 If you can plug the coolant port at the front of the block, or in the head, then you would eliminate the internal bypass. Quote Link to comment Share on other sites More sharing options...
martybose Posted December 18, 2017 Report Share Posted December 18, 2017 Or simply change the back plate on the pump to the one from your old waterpump. You'll see that there is one less hole on the plate from the old pump, and it will seal off the internal bypass passage. Be sure to use the gasket from the new pump so it will seal the passage to the back plate. Marty 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.