• Welcome to 28Q29U Plymouth Forum.
 

News:

NEW FORUM version is here. 
If you are experiencing any problems, contact chetbrz@aol.com
WELCOME Auto Registration is turned OFF. 
In order to register for this forum please contact chetbrz@aol.com to request access.

Main Menu

The Prodigal Son returns.

Started by chetbrz, April 05, 2019, 01:32:19 PM

Previous topic - Next topic

racertb

 Nice!  Hopefully we can hear it soon...

chetbrz

Quote from: racertb on April 19, 2019, 12:21:45 AM
Nice!  Hopefully we can hear it soon...

Hi Ted,  Nice to hear from you.  Rain and guests this weekend will slow things down a bit but will get to that ASAP. 

Enjoy the holidays.  Chet...
http://www.1948Plymouth.info           Web Master - Forum Administrator - AACA member

racertb


chetbrz

Below is a link to a video of my engine running without the knock.  I think we might have this one fixed.

  • Engine running for more than 30 minutes at slightly high idle. 
  • Highest radiator temperature was 190 degrees at the top and 109 degrees at the bottom.
  • Oil pressure 40psi.
  • Excellent vacuum without static timing.
  • Cylinder wall temperature between 150 to 175 across cylinders 2-3-4.  Cylinder 1 about 15 degrees higher.
    Possible reason for this is the output to the radiator is above cylinder 1.  Most likely the hottest point in the water system.   
  • I will retorque the head tomorrow before starting it up again.
Below is a video of the engine running.  Might take a couple of minutes to download.
Lots of noise but no knocks.  I will install the rebuilt RT-08 carburetor and tighten up the valve adjustment after 8-10 hours of run time.

http://www.1948plymouth.info/1929/images/IMG_1432.MOV

Cheers Chet...   :)
http://www.1948Plymouth.info           Web Master - Forum Administrator - AACA member

frankp

Chet, looks and sounds terrific!  Know you have much to do, but have to be smiling and proud of all you have accomplished.    frank
frank p

racertb


chetbrz

Quote from: racertb on April 26, 2019, 10:31:06 AM
Sounds awesome!

Thanks,  Ted

Ran a little over an hour yesterday and the valve tap quieted down. Oil pressure with vacuum port plugged was at 34psi at idle.  Adjusted spring to allow closer to 45 at high rpm. Only hitting 40 but adjustment was set to lower value from the first try before fixing oil circulation issues.

Looking good now.   Second time's the charm.
http://www.1948Plymouth.info           Web Master - Forum Administrator - AACA member

chetbrz

Worked on the motor a little today.  I have about 4 hours of runtime so I decided to redo the valve adjustment and install the newly rebuilt RT08 carburetor.  Had some minor issues with the rebuild so as usual I took it apart and re-did the float setting and fixed some leaks.  After I got everything setup and no leaks with the electric fuel pump.., I tried to start the engine.  Oh no, it just wouldn't start.  I was about ready to reinstall the old carb when I realized I didn't have the make shift ignition switch turned on.  My Bad !!  Once on.., the engine fired right up.  I ran it for about an hour with the carb set as lean as possible.  Without the cables hooked up I had to use a tie wrap to keep the chock arm in position for a stable idle stop.

Below is a link to some MP4 video.

http://www.1948plymouth.info/1929/images/MVI_1392.MP4

I guess back to body work...  Chet...
http://www.1948Plymouth.info           Web Master - Forum Administrator - AACA member