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Timing cover seal size??? HELP (fixed pics) |
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rickyboada 
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Joined: Nov/07/2018 Location: Miami Status: Offline Points: 9 |
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 Topic: Timing cover seal size??? HELP (fixed pics)Posted: Nov/07/2018 at 10:25am |
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Hey everyone, I just recently signed up but have been coming here for advice and reading for years so thank you all for the knowledge so far.
I'm rebuilding the 304 that came in my '77 Jeep CJ5. I cant seem to find the right front crank seal. By application the outside diameter is 2.74 and the opening I have is 2.36. Part number I have now is 710447. Its way bigger than what I previously had. Machine shop took it off so I dont have the old one for reference :( Does anyone know if these brought different sizes at one point? Or a part number I should be looking at? I've attached some pictures of my engine for reference. Thank you in advance for the help.        Edited by rickyboada - Nov/14/2018 at 11:29am |
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304-dude
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Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Nov/07/2018 at 11:16am |
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The proper seal size comes with a timing cover kit, also the kit comes with a balancer sleeve for the balancer to seal well against the seal.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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rickyboada
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Joined: Nov/07/2018 Location: Miami Status: Offline Points: 9 |
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Posted: Nov/07/2018 at 11:24am |
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My timing cover was in really good shape and didn't want to get a new one with the horror stories on here.
Engine is already all put together and complete just missing this last piece to get rolling 
ANYONE?? Edited by rickyboada - Nov/08/2018 at 2:05pm |
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rickyboada
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Posted: Nov/13/2018 at 8:36pm |
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Bump..... still having no luck with this
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304-dude
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Posted: Nov/13/2018 at 8:53pm |
Go to rock auto and select 79 amc AMX with a 304. Go to engine and look for timing cover seal. They fit all amc gen 2 and gen 3, just late covers install from the front, while 60s and 70s install from the rear of the cover. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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303Y03
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Joined: Oct/12/2018 Location: NY Status: Offline Points: 45 |
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Posted: Nov/13/2018 at 8:55pm |
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Can not see picture of your timing cover.
Seal may have to be installed first from back,before timing cover is put on the engine? |
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tufcj
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Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Online Points: 4097 |
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Posted: Nov/13/2018 at 8:59pm |
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I'm pretty sure the seal goes in from inside the cover on a 77. Some of the late production covers could be inserted from the outside. If the cover was installed without the seal, it will need to be removed. As far as I know, there is only one seal size for every Gen2 and Gen3 V8 from 66-91. I just opened a new Fel-Pro complete gasket kit, and the seal is a National 710447. The seal you have is correct. Bob tufcj
Edited by tufcj - Nov/13/2018 at 9:15pm |
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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PHAT69AMX
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Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5926 |
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Posted: Nov/13/2018 at 9:02pm |
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I slept at the Green Lite on the Tree and tufcj beat me by "this much"...  On RockAuto it also list a TIMKEN Brand Seal Number 472341 for the Timing Cover to Crank. On the Timken site it shows 2.748 O.D. for that Seal.... uh.... wait a minute... "Early" Timing Chain Covers have a "Lip" and require the Crank Seal to go in from the INSIDE... the Seal can NOT be removed or driven in from the Front / Outside... because of the "Lip"... iirc at some point AMC did make a change so the Seal could be changed with engine assembled... and some folks remove the outer "Lip" on "old" Covers to allow the same... So... is it that you've installed the Timing Cover and it has the "Lip"... and unfortunately you'll have to remove it to install the Crank Seal from the Inside... ? Bummer dude, not a major bummer, but a bummer none the less...  Edited by PHAT69AMX - Nov/13/2018 at 9:07pm |
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needafasterAMX
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Posted: Nov/13/2018 at 9:45pm |
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I don't see the oil slingger
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74 AMX, 401
Viper spec T56 6 speed trans Hydroboost brakes with rear disks from a Avenger 3:73 TG rear,now Trutrac with 3:15 A Turbo is in my future. |
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Buzzman72
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Joined: Sep/15/2009 Location: Southern IN Status: Offline Points: 2726 |
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Posted: Nov/14/2018 at 5:54am |
I'm pretty sure the dude was talking about a timing cover GASKET AND SEAL kit...not buying a new timing cover just for the seal. |
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Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
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rickyboada wrote: