Every once in a while I see a note that someone has "oiled" a threaded fastener. Care should be taken to adjust (lower) applied torque to fasteners with lubed threads. There must be many references on the net, but I found this one easily and it looks rather comprehensive: http://raskcycle.com/techtip/webdoc14.html Not quite New Years in CA, yet-but Happy New Year to all. I'm going to get slightly lubricated myself so g'nite. C300K'ly, Rich Barber The "real" Brentwood, CA 1964 Chrysler 300K MOTORCYCLE BOLTS AND TORQUE SPECS Always use the proper grade fastener. You should use at least grade 5 fasteners on almost everything on your motorcycle. Bolts are graded by tensile strength and are easily identified by the number of slash marks on the head of the bolt. The more marks the higher the quality. Hardware store bolts with no markings on top are usually soft, mild steel, grade 2 quality and should be avoided like the plague. Another thing to watch is torque specs. A bolt that has been over tightened can be just as lethal as one that hasn't been tightened enough. A bolt that has been tightened beyond recommended torque specs can easily break in service. In other words, the soft grade 2, 5/16-18 hardware store bolts that are attaching the bottom of your sissy bar to the back legs of your rigid frame are shaky enough to begin with, they get downright lethal when you tighten them up as tight as you can get them with a couple of 10" wrenches. Keep in mind that torque specs will be less for bolts that have oil or lubrication on them than for clean, dry bolts. Use the following tables to determine what grade of bolt you are working with and how tight to torque it. U.S. BOLT GRADES SAE 2 SAE 5 SAE 7 SAE 8 2 5 7 8 SOCKET HEAD CAP SCREW I.D. Marks No markings 3 lines 5 lines 6 lines Allen head Material Low carbon Medium-carbon, tempered Medium-carbon, quenched & tempered Medium-carbon, quenched & tempered High-carbon, quenched & tempered Tensile strength (Minimum) 74,000 psi 120,000 psi 133,000 psi 150,000 psi 160,000 psi U.S. BOLT TORQUE SPECIFICATIONS Torque in pounds-foot 2 2 5 5 7 7 8 8 Socket head cap screw Socket head cap screw Bolt Dia. Thread per inch Dry Oiled Dry Oiled Dry Oiled Dry Oiled Dry Oiled 1/4 20 4 3 8 6 10 8 12 9 14 11 1/4 28 6 4 10 7 12 9 14 10 16 13 5/16 18 9 7 17 13 21 16 25 18 29 23 5/16 24 12 9 19 14 24 18 29 20 33 26 3/8 16 16 12 30 23 40 30 45 35 49 39 3/8 24 22 16 35 25 45 35 50 40 54 44 7/16 14 24 17 50 35 60 45 70 55 76 61 7/16 20 34 26 55 40 70 50 80 60 85 68 1/2 13 38 31 75 55 95 70 110 80 113 90 1/2 20 52 42 90 65 100 80 120 90 126 100 9/16 12 52 42 110 80 135 100 150 110 163 130 9/16 18 71 57 120 90 150 110 170 130 181 144 5/8 11 98 78 150 110 190 140 220 170 230 184 5/8 18 115 93 180 130 210 160 240 180 255 204 3/4 10 157 121 260 200 320 240 380 280 400 320 3/4 16 180 133 300 220 360 280 420 320 440 350 7/8 9 210 160 430 320 520 400 600 460 640 510 7/8 14 230 177 470 360 580 440 660 500 700 560 1 8 320 240 640 480 800 600 900 680 980 780 1 12 350 265 710 530 860 666 990 740 1060 845 BOLT TORQUE FACTORS LUBRICANT OR PLATING TORQUE CHANGES Oil Reduce torque 15% to 25% Dry Film (Teflon or moly based) Reduce torque 50% Dry Wax (Cetyl alcohol) Reduce torque 50% Chrome plating No change Cadmium plating Reduce torque 25% Zinc plating Reduce torque 15% Baseline torque is calculated for a non-lubricated, un-plated bolt <http://raskcycle.com/techtip/webdoc14.html#top> p From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Michael Moore mmoore8425@xxxxxxx [Chrysler300] Sent: Thursday, December 31, 2015 4:29 PM To: Ryan Hill <ryan_hillc300@xxxxxxxxxxx> Cc: Chrysler300 <chrysler300@xxxxxxxxxxxxxxx> Subject: Re: [Chrysler300] 300H Intake manifold gasket replacement Thanks Ryan, That pretty well describes what I did except that I followed the Felpro procedure and put sealer on the bottom of the valley gasket first and from head to head on the front and rear of the valley, installed the gasket, installed and snugged the front and rear clips, put sealer around the intakes on the top of thegasket, then installed the intake manifold. I had previously cleaned all mating surfaces thoroughly with carb cleaner and emery cloth, had blown out all holes with brake cleaner, hand brushed the screw threads, checked screw length on all screws to make sure none would bottom out and oiled them. I also did a dry assembly to make sure I had everything. The directions are to have all bolts tight within 5 minutes of starting with the sealer.I did my best and maybe made it, although I left off all the brackets, let it cure overnight, then removed bolts as few at a time as possible, installed brackets and torqued bolts. One handy tool which was made to my Jaguar shop manual is a precision ground hardened stainless steel 3/8 dia rod with one rounded (spherical). It is a jewel for aligning manifold bolts, especially the one on my car which has two brackets and a carb spring anchor stacked on top. I wrestled with that for a few minuted until I remembered the Jaguar tool, and it was perfect. A gentle tap and things moved quickly into alignment.I tightened the other bolts , removed the tool and easily installed the last bolt. Thanks again Mike PS-I attribute this failure to: 1. The two center bolts in each side of the manifold were not at tight as they should be. I do not know why. 2. Although all the high ribs on the old gasket were flattened, whenI installed this back in 82, I doubt if I used any sealer based on looking at the old valley gasket. Tomorrow I'll start it. On Dec 31, 2015, at 3:31 PM, Ryan Hill <ryan_hillc300@xxxxxxxxxxx <mailto:ryan_hillc300@xxxxxxxxxxx> > wrote: Mike, I've had a lot of experience installing intake manifolds on B/RB Mopars but have very little experience with Ram manifolds specifically. At one point I had a 383 'problem' engine that had been decked and shaved and goofed around with so much it would regularly start leaking internally between the runners and the lifter valley. I ended up having to add additional gaskets on either side of the valley tray, basically shims...long story. Anyway, after that I started to over think all my installations for a number of years before realizing most engines require very little thinking at all. Just make sure the surfaces are clean, apply a liberal amount of gasket sealer in the corners, place the tray down followed immediately by the manifold. Start the bolts to align everything, then torque it down from the middle outward. If you use silicone on the mating surfaces, I found it helps to not quite complete the torque sequence until the sealer has set. Unless your heads and intake are not mating well, you shouldn't have a problem at all. Happy New Year everyone! Ryan Hill _____ CC: Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300@xxxxxxxxxxxxxxx> To: mmoore8425@xxxxxxx <mailto:mmoore8425@xxxxxxx> From: Chrysler300-noreply@xxxxxxxxxxxxxxx <mailto:Chrysler300-noreply@xxxxxxxxxxxxxxx> Date: Thu, 31 Dec 2015 07:16:53 -0800 Subject: [Chrysler300] 300H Intake manifold gasket replacement This is an FYI for all the folks who offered help how to make sure this intake manifold remains sealed. My problem is there was no obvious problem, so I missed something the last time I replaced it. (Around 1988, while coming back from a show in Victoria BC, we developed a bad case of valve recession causing a guide failure, hot exhaust coming out of the valve cover etc. We got to Ray Doern's home in Portland and in his back yard, pulled both heads that night. We got the heads to a machine shop at 10 pm. We picked them at noon next day, painted them and installed them wet. It was running that afternoon and we left at 7 the next morning. Needless to say, I may have overlooked something back then.) One of the issues which Jeff Carter raised was using gasket sealer on the intake manifold valley gasket. There was one in particular he favored, but I have been unable to raise him over the holidays. I asked here and got a lot of good information. I went to my local NAPA store yesterday and checked on the suggested sealers available, but remained undecided. I checked the directions on each of them and, they all had one or more of the following issues: 1. Specified to be NOT fuel resistant. 2. Specified to be hardening and permanent. 3. Not heat resistant. I settled on a Powermatex product but did not use it. But then I carefully read the directions on the tiny tube which came with the Felpro gasket set. I noticed the application instruction drawings looked like my intake and block, so I used it instead. By using a small bead, there is just enough in that tiny tube to do exactly what they instruct you to do (ends of valley head to head, underside intake ports, install gasket, tops of intake ports. We will see. I hope to have it running soon.Thanks for all the suggestions. Mike Moore 300H [Non-text portions of this message have been removed] ------------------------------------ Posted by: "Rich Barber" <c300@xxxxxxx> ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! 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