Plymouth Owners Club

General Category => Technical Discussion => Topic started by: vanbuskirk on December 20, 2005, 10:47:13 AM

Title: Head Plug Over #6 - Whassup?
Post by: vanbuskirk on December 20, 2005, 10:47:13 AM
Waht is the purpose of the plug in the head over cylinder #6? Is it a passage into the cylinder? Is the hole separated from the coolant? I am trying to find out if I have a 230 P-25 by measuring the stroke. The plug has been removed, but the hole is crusted shut. I want to be sure that a I can punch through without damage. Bob
Title: Re: Head Plug Over #6 - Whassup?
Post by: jd2ksilver on December 20, 2005, 11:47:10 AM
Others will have more info I am sure, but it is my understanding it is used to find top dead center of the piston for timing purposes. 
Title: Re: Head Plug Over #6 - Whassup?
Post by: jd2ksilver on December 20, 2005, 12:03:33 PM
Not sure if this will work or not, but here goes,
Title: Re: Head Plug Over #6 - Whassup?
Post by: Jim Benjaminson on December 20, 2005, 09:37:54 PM
Bob - what is the serial number on the engine block? (left front corner of the block, below the cylinder head, just above the generator mounting).  If there is a number there, I can I.D. the size of the engine for you.  If the serial number spot is blank, then it was a factory new engine sold aftermarket.  These engines had a tag riveted to the block to I.D. it but these tags were light duty brass and soon disappeared.  Jim Benjaminson
Title: Re: Head Plug Over #6 - Whassup?
Post by: vanbuskirk on December 22, 2005, 11:34:06 AM
Jim, P-25 432141 is the number. Thanks, Bob
Title: Re: Head Plug Over #6 - Whassup?
Post by: Jim Benjaminson on December 23, 2005, 11:41:25 PM
Bob - sorry for the delay in answering but I've spent two days putting up with people jammed in a shopping mall!  Merry Christmas to all!

Anyway, its a 230 cubic inch.  You should find what looks like a vertical diamond in front of the number.  Its a late '54 engine but serial number definately tells its a 230.....

JB
Title: Re: Head Plug Over #6 - Whassup?
Post by: vanbuskirk on December 24, 2005, 09:23:50 AM
Jim, Thaks for your research. Bob
Title: Re: Head Plug Over #6 - Whassup?
Post by: vanbuskirk on December 28, 2005, 10:22:33 AM
I'm sorry, I forgot to thank jd2ksilver for his response to my question. We drove the car 206 miles yesterday on a road trip to see the Lost River in Orange County,  Indiana. River disappears for 22 miles into underground caverns, before resurfacing at the Orangeville Rise. Car behaved well; got 16MPG with overdrive. But, it is not as much fun to drive as the P-15. Bob
(https://www.plymouthowners.club/talk/proxy.php?request=http%3A%2F%2Fimg.photobucket.com%2Falbums%2Fv136%2Fvanbuskirk%2F54front2.jpg%253Cbr%2520%2F%253E&hash=ac676aadbb6a6b4bd657d31a034f95ef29a49a7f)
Title: Re: Head Plug Over #6 - Whassup?
Post by: Jim Benjaminson on December 28, 2005, 10:41:01 PM
Bob - great looking '54.  Amazing - some years ago unless it was a woodie, nobody would look at a station wagon.  Now they're popping up slowly but surely and they look good!