|
|
Expert
Posts: 1530
  
Location: ZH, Switzerland | I need to change the spark plugs in my Chryslis 354 Firepower. What types are the best or what do you use?
The spark plugs inserted into spark plug tubes. These spark plug tubes recommend a small socket. What socket do you use?
The socket I'm using for the 318 Poly (Plymouth) engine in my truck is a 13/16" socket,
outside diameter: 1.110 inch (28.2 mm).
I'll appreciate your answer. Big thank you in advance.
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 3433
 
Location: Chestertown, NY ( near Lake George) | Autolite 66 works well in my 55 331, a normal thin wall plug socket 13/16 works fine. |
|
| |
|
Expert
Posts: 3068
Location: N.W. Fla. | Remember to take the washers off the plugs. |
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | I guess I'll take a set of Autolite #65. According the table at Autolite the #66 is for the '55 331 and the #65 is for the '56 354 Firepower.
Did I understand it correct? Prior to mount the new spark plugs I have to remove the washer at the spark plug?
Thanks a lot for your answer.
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 3433
Location: Chestertown, NY ( near Lake George) | Correct on the washers, the 65 plug is a little colder heat range, 66 works great in my car. |
|
| |
|
Expert 5K+
Posts: 5139
Location: cornpatch county, Southwest IOA | di_ch_NY56 - 2011-04-03 1:40 PM
I guess I'll take a set of Autolite #65. According the table at Autolite the #66 is for the '55 331 and the #65 is for the '56 354 Firepower.
Did I understand it correct? Prior to mount the new spark plugs I have to remove the washer at the spark plug?
Thanks a lot for your answer.
Happy motoring!
Dieter Yes, your aluminum spark plug tube seals the sparkplug instead of a washer. It was recommended that new tubes be installed when tje ends got damaged from plug tightening. I would expect you will have oil inside your tubes when yo remove the plugs. The tubes are also supposed to seal out the oil. Use a 13/16 plug socket with a rubber insert to hold the plug in the socket.......................MO |
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | MOPAR-TO-YA - 2011-04-03 9:21 AM
Yes, your aluminum spark plug tube seals the sparkplug instead of a washer. It was recommended that new tubes be installed when tje ends got damaged from plug tightening. I would expect you will have oil inside your tubes when yo remove the plugs. The tubes are also supposed to seal out the oil. Use a 13/16 plug socket with a rubber insert to hold the plug in the socket.......................MO
Uuuhhh - where to get new tubes if the existing ones are damaged at the end as you precdict? I found some in the PAW catalog, but they fit only /w a custom valve cover. I want to keep the stock appearance.
The socket I got loooong ago is a Stahlwille 13/16 /w rubber and magnet inside. I'll try if it's thin wall enough or if I have to buy a new one.
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 3068
Location: N.W. Fla. | di_ch_NY56 - 2011-04-04 4:23 AM
MOPAR-TO-YA - 2011-04-03 9:21 AM
Yes, your aluminum spark plug tube seals the sparkplug instead of a washer. It was recommended that new tubes be installed when tje ends got damaged from plug tightening. I would expect you will have oil inside your tubes when yo remove the plugs. The tubes are also supposed to seal out the oil. Use a 13/16 plug socket with a rubber insert to hold the plug in the socket.......................MO
Uuuhhh - where to get new tubes if the existing ones are damaged at the end as you precdict? I found some in the PAW catalog, but they fit only /w a custom valve cover. I want to keep the stock appearance.
The socket I got loooong ago is a Stahlwille 13/16 /w rubber and magnet inside. I'll try if it's thin wall enough or if I have to buy a new one.
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 3068
Location: N.W. Fla. | Mopar1 - 2011-04-04 5:15 AM
di_ch_NY56 - 2011-04-04 4:23 AM
MOPAR-TO-YA - 2011-04-03 9:21 AM
Yes, your aluminum spark plug tube seals the sparkplug instead of a washer. It was recommended that new tubes be installed when tje ends got damaged from plug tightening. I would expect you will have oil inside your tubes when yo remove the plugs. The tubes are also supposed to seal out the oil. Use a 13/16 plug socket with a rubber insert to hold the plug in the socket.......................MO
Uuuhhh - where to get new tubes if the existing ones are damaged at the end as you precdict? I found some in the PAW catalog, but they fit only /w a custom valve cover. I want to keep the stock appearance.
The socket I got loooong ago is a Stahlwille 13/16 /w rubber and magnet inside. I'll try if it's thin wall enough or if I have to buy a new one.
Happy motoring!
Dieter They show up on EBay fairly often. |
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | Mopar1 - 2011-04-03 12:17 PM
Mopar1 - 2011-04-04 5:15 AM
di_ch_NY56 - 2011-04-04 4:23 AM
MOPAR-TO-YA - 2011-04-03 9:21 AM
Yes, your aluminum spark plug tube seals the sparkplug instead of a washer. It was recommended that new tubes be installed when tje ends got damaged from plug tightening. I would expect you will have oil inside your tubes when yo remove the plugs. The tubes are also supposed to seal out the oil. Use a 13/16 plug socket with a rubber insert to hold the plug in the socket.......................MO
Uuuhhh - where to get new tubes if the existing ones are damaged at the end as you precdict? I found some in the PAW catalog, but they fit only /w a custom valve cover. I want to keep the stock appearance.
The socket I got loooong ago is a Stahlwille 13/16 /w rubber and magnet inside. I'll try if it's thin wall enough or if I have to buy a new one.
Happy motoring!
Dieter They show up on EBay fairly often. hot heads also.
Thank you very much for your hint, George. I just ordered and got an answer "Thank you for your order" from Hot Heads. So I guess they got my order and are processing it.
The spark plugs I bought are 3/4" reach. The Service Manual addresses 3/8" reach for the dual rocker shaft engine and 3/4" reach for the single rocker shaft engine. When I look at the cut through drawings of both engines I think the wall - where spark plug thread is is - taller at the dual rocker shaft engine. Could it be that the red Service Manual is wrong?
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 1730
Location: Michigan | I have 3/4 inch length plugs sitting on my bench that were from my 354 and 331 hemi's These were Marine hemis and were lower compression engines. R45J Acniter. My Poly manual says the shorter length was used in the poly engines only. Using the longer length on the poly engine would damage the engine. I think your manual is wrong as you suspect. |
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | Yep, I guess so. It's a red covered "Chrysler C-71 Windsor, C-72 New Yorker, C-300B Chrysler, Service 1956 Manual, C-73 Imperial, C-70 Crown Imperial" manual I bought from Bishko. It's issued by Chrysler Division, Chrysler Cooperation, Detroit 31, Michigan. Litho in U.S.A., 12M-ESS-5-56
Could be that the Division issued some wrong information in the service manual.
Thanks for your confirmation.
Happy motoring!
Dieter |
|
| |
|
Expert
Posts: 3068
Location: N.W. Fla. | The 51-3 round ex port Chr Hemis use short reach plugs also. |
|
| |
|
Expert
Posts: 1730
Location: Michigan | Mine is the 1955 C-67,68,69,70 Chrysler Service Manual of the same publisher.
 (scan0007.jpg)
Attachments
----------------
 scan0007.jpg (123KB - 190 downloads)
|
|
| |
|
Expert 5K+
Posts: 5139
Location: cornpatch county, Southwest IOA | I am not happy with Bishko repair manuals and parts books. For less money you can buy an actual Chrysler issued shop manual on e-bay. Used but true info..............................MO |
|
| |
|
Expert 5K+
Posts: 5139
Location: cornpatch county, Southwest IOA | I am not happy with Bishko repair manuals and parts books. For less money you can buy an actual Chrysler issued shop manual on e-bay. Used but true info..............................MO |
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | Mark, I just scanned the page of my Service Manual and reviewed the picture and the text. The information in the text below the picture is correct for 1956 engines: short reach for Spitfire- long reach for Firepower engines.
I'm sorry - I didn't know that earlier Hemi engines (/w round port heads) uses short reach spark plugs as well.
Thin wall socket: Wednesday I'll go to the post office - today I got a note that a parcel is waiting for me. I assume the new spark plug tubes.
Happy motoring!
Dieter
 (ServiceManual_p117.jpg)
Attachments
----------------
ServiceManual_p117.jpg (80KB - 223 downloads)
|
|
| |
|
Expert
Posts: 1530
Location: ZH, Switzerland | Today I got the spark plug tube set from Hot Heads. I tried my Stahlwille 13/16" socket with a spark plug I already removed the gasket ring: it works. I could put the spark plug to the bottom of the tube and there is still air around the socket. I'm happy, it's slim/thin wall enough.
Happy motoring!
Dieter
Edited by di_ch_NY56 2011-04-13 3:12 PM
|
|
| |
|
Expert
Posts: 1730
Location: Michigan | Looking at my manual again I have the Chrysler issue. Old and battered a bit but intact and perfect for the shop.  |
|
| |
331/354/392 spark plugs / spark plug socket
