From owner-fsj-digest-at-digest.net Fri Jan 28 21:05:06 2011 From: fsj-digest fsj-digest Saturday, January 29 2011 Volume 01 : Number 3693 Forum for Discussion of Full Sized SJ Series Jeeps Brian Colucci Digest Coordinator Contents: RE: fsj: New Rear axle wheel bearings benefits Re: fsj: New Rear axle wheel bearings benefits fsj: Bearings on Model 20 rear end fsj: 304 vs Stroker 6 FSJ Digest Home Page: http://www.digest.net/jeeps/fsj/ Send submissions to fsj-digest-at-digest.net Send administrative requests to fsj-digest-request-at-digest.net To unsubscribe, include the word unsubscribe by itself in the body of the message, unless you are sending the request from a different address than the one that appears on the list. Include the word help in a message to fsj-digest-request to get a list of other majordomo commands. ---------------------------------------------------------------------- Date: Thu, 27 Jan 2011 08:42:14 -0800 From: Jim Blair Subject: RE: fsj: New Rear axle wheel bearings benefits Sounds like they used a Timken Set 10. Definitely the way to go in wheel bearings. It takes away the in/out slop of the old style bearings. Mileage gain will be in the long-term once you get past the heavy foot test of the throttle. Jim Blair, Lynnwood, WA '87 Comanche, '83 Jeep J10, '84 Jeep J10 > Date: Thu, 27 Jan 2011 08:33:08 -0800 > Subject: fsj: New Rear axle wheel bearings benefits > From: michelbalea-at-gmail.com > To: fsj-digest-at-digest.net > > I managed to replace the rear wheel bearing on the AMC 20 as I was getting > too much rattle from the bearings.... A shop pressed them. > > The main drag was a driver's side stuck drum, which after some overnight pb > blaster was still stuck.... but a little blue wrench on the drum by the > axle, but not the axle with monitoring by a infrared thermometer not to go > over 200F was successful, a little pop when the metal expanded, a little > 2lbs hammer on the outward edge of the drum and it came off. > > The race was a bit more challenging as the tool loaner from the zone did not > fit, so I installed a large and thin washer on the slide hammer to extract > the race(s). I must say that I was willing to keep the old race(s) as they > looked good enough... but the bearings pressed by the shop looked sealed and > closed.... while the old ones were "separated" from the race -It is normal?, > I do no remember how it was on the dana 44 that I did 3 years ago- > > The main result is that the wheel is spinning so freely that it kept on > going after giving a little spin for an extra second.... while the old > bearing were so "used" that the wheel stopped as soon as you stopped > spinning it. I was expecting some mileage gain... but no.... well.... it has > a lot more power and driving felt like having an extra 20 hp..... I could > feel it on city streets... and noticed that I had to use the brakes more > often.... so I really enjoyed the twisty roads of the sierras, a little push > on the right foot..... yielded a noticeable acceleration.... no pedal to the > metal necessary... > > Let's see how long it will last. > > Michel > 74 wagoneer > 85 Gwag ------------------------------ Date: Thu, 27 Jan 2011 09:01:41 -0800 (PST) From: john Subject: Re: fsj: New Rear axle wheel bearings benefits excellent. ----- - ------------------------------------------------------------------------ Snohomish, Washington -o|||||o- where Jeeps don't rust, they mold http://AMSOIL.com/redirect.cgi?zo=283461 si vis pacem, para bellum http://johnmeister.com http://wagoneers.com http://fotomeister.us - ------------------------------------------------------------------------ On Thu, 27 Jan 2011, Michel Balea wrote: # I managed to replace the rear wheel bearing on the AMC 20 as I was getting # too much rattle from the bearings.... A shop pressed them. # # The main drag was a driver's side stuck drum, which after some overnight pb # blaster was still stuck.... but a little blue wrench on the drum by the # axle, but not the axle with monitoring by a infrared thermometer not to go # over 200F was successful, a little pop when the metal expanded, a little # 2lbs hammer on the outward edge of the drum and it came off. # # The race was a bit more challenging as the tool loaner from the zone did not # fit, so I installed a large and thin washer on the slide hammer to extract # the race(s). I must say that I was willing to keep the old race(s) as they # looked good enough... but the bearings pressed by the shop looked sealed and # closed.... while the old ones were "separated" from the race -It is normal?, # I do no remember how it was on the dana 44 that I did 3 years ago- # # The main result is that the wheel is spinning so freely that it kept on # going after giving a little spin for an extra second.... while the old # bearing were so "used" that the wheel stopped as soon as you stopped # spinning it. I was expecting some mileage gain... but no.... well.... it has # a lot more power and driving felt like having an extra 20 hp..... I could # feel it on city streets... and noticed that I had to use the brakes more # often.... so I really enjoyed the twisty roads of the sierras, a little push # on the right foot..... yielded a noticeable acceleration.... no pedal to the # metal necessary... # # Let's see how long it will last. # # Michel # 74 wagoneer # 85 Gwag # ------------------------------ Date: Thu, 27 Jan 2011 22:59:49 -0500 From: Mark Wallace Subject: fsj: Bearings on Model 20 rear end Michel - how long did your original bearings last on your model 20 rear end? I think mine went at about 220,000 miles. What I found with mine is that I could grab the tire with the Jeep jacked up and have maybe 1/4 inch of play. At the time my roommate had access to a full machine shop at work so he pressed the new bearings on for me and I recall that the new bearings were also single piece things. This was a decade ago. Totally different design from the factory ones. When I worked to put it back together I broke a lug stud, then I broke another lug stud, and then I broke a third lug stud (all without air tools) at which point I decided to replace every lug stud on the Jeep. I don't remember how I got the races out. I know I do have a substantial selection of press plates and pullers all of which I made myself, but I made those later when I had to rebuild the rear differential and shortly thereafter had to do the transfer case and made a few more. Definitely had the brake drums rust on a time or two as well. Anyway after it being too cold and then me being too sick it's time to get back into the car projects. I need to get this Ford 390 off my work bench and then I can start making floor templates. Has anybody done significant floor replacement on one of the Wagons? any pics? Any pitfalls? Mark Wallace 81 Wag ------------------------------ Date: Fri, 28 Jan 2011 22:42:19 -0600 From: Kim Tesar Subject: fsj: 304 vs Stroker 6 Hi all, Jim, I remember you suggested considering a 304 as a replacement in the J10, instead of a stroker 6 build. This has got to have some merit. It seems most people spend time trying to get these motors to breathe. The sixes and eights have the same size valves, 1.94/1.5. Good stroker builds show about 265 hp, maybe 290 lb-ft, but the sixes have the longer stroke. Which have to move slightly more air per cylinder: 360/8 = 45 cu in,, 282/6 = 47 cu in (stroker 4.6) Getting bigger valves in a 6 cyl head, there are some on ebay with raised ports and beautiful machining for $1600, um, I don't think so. And by the time you're at that level, you're thinking roller cam = $1100. This is starting to get silly. The 304 must be more efficient at moving air, right out of the box, if it uses the same heads as the 360 with an undersquare bore/stroke ratio... 304/8 = 32.5 cu in per cylinder. And you get the cross flow head with better intake runner design, and more cubic inches out of the box than the stroker. Less money would need to be invested in head work to improve the flow relative to the size of the motor. There's a 304 on Craigslist in San Antonio for sale, in good shape, for 800, maybe that's a better go. Any other thoughts on this? - - Landon ------------------------------ End of fsj-digest V1 #3693 **************************