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| | | | Joined: May 2011 Posts: 35 New Guy | | New Guy Joined: May 2011 Posts: 35 | Thought I would go ahead and do a tune up on the 1952 3100 I purchased a few weeks ago just so I would know when the parts were all replaced. After reviewing the specs for the engine ( a 1961 235), I ordered AC Delco R45 plugs however when I pulled the old ones, noticed they are R45S with a gap of 0.030". Also the end of the plug on the 45S is longer than on the 45's.
Should I go ahead and use the R45's gapped at the spec of 0.035" or get a set of R45S plugs and gap them the same as what is currently in the truck?
As always, many thanks for your help.
1952 3100
| | | | | Joined: Aug 2004 Posts: 1,418 ODSS Lawman | | ODSS Lawman Joined: Aug 2004 Posts: 1,418 | I think the R45 is a direct replacement for the stock R44 that came with the engine.
SWEET Sergeant At Arms: Old Dominion Stovebolt Society BUNS?!?!?!Where we're going, we don't need no buns.....1950 GMC 450 1951 Chevy 1/2-TonThe GreenMachineIn the Stovebolt Gallery | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | i just installed a set of E3 spark plugs and i believe it made a difference. i am using E3.52. i go them from Oreilly's at $6.00 a piece. i seem to be able to shift into a higher gear at a lower speed without lugging. i have a 54/235 with dual cars and exhaust.
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | Anything to get your money. | | | | | Joined: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | Been using R45 in my 235 since day one. Gap at .035. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Use the R45S. It is an extended tip plug & an improved version of the 44 or45 that came with it originally. These ext. tip plugs cannot be used in a flathead engine.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | Well ROY, it is my money and i do think it runs better.
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Jun 2008 Posts: 145 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2008 Posts: 145 | Our 54 came with R45's in it and the box of parts that was with it had R 43's in it so they got put in after I read they were meant more for highway driving as opposed to in town driving (different heat range) Not sure if that made any difference. I had trouble starting the truck this year so it now has rj8c champions in it as that was the only plug reference at out local parts supply.I think most of the problem was my points though.One of the guys at our auto parts place in an old chevy car guy and he knows his stuff which makes quite a difference. | | | | | Joined: May 2011 Posts: 35 New Guy | | New Guy Joined: May 2011 Posts: 35 | Many thanks to you all for your advice and suggestions.
I think I will just go ahead and instaall the R45's gapped at 0.035" and see if there is any difference in how the engine runs. Will also replace the points, condensor, cap and rotor so will hopefully end up with a smoother running engine.
1952 3100
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