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Modern Tractor Discussion Board Topic: 8310 manifold [Return to Forum] Author [expand] [Modern View] peanut80 10-11-2009 12:55:40 199.64.0.252 20899 Report to Moderator Our 8310 has blown the manifold gasket twice. It had about 1200 hrs. on it the first time the JD mechanic said it was probably a problem from factory assembly. He repaired it and said it should be fine. It has now happened again at 2200 hrs. It is a two piece assembly and has leaked on both ends both times. The local machine shop said use studs and torque at 35 ft/lbs. is this correct? Or is this a problem with these engines? [Reply]  [Send Email] JDTECH 10-11-2009 23:21:01 207.192.238.12 20903 Report to Moderator Re: 8310 manifold in reply to peanut80, 10-11-2009 12:55:40   Are the bolts breaking also or are the gaskets just blowing out? The ones we had probelems with, the bolts were breaking and then blowing out the gasket. There was a different manifold bolt that we used that was harder I believe. I don't remember the torque, but I believe that it was increased as well. We never used the studs, but then we never had any repeat failures either. Did you have the manifold planed? ould be that the ends are not true.   [Reply]  [No Email] peanut80 10-12-2009 18:08:51 199.64.0.252 20904 Report to Moderator Re: 8310 manifold in reply to JDTECH, 10-11-2009 23:21:01   The machine shop did take about .040 off the manifold. He was skeptical of the two piece design and maybe it was warping under the heat. It did break a couple of the bolts and when we ordered new ones from JD they sent the wrong ones and didn't say anything about an upgrade.   [Reply]  [No Email] JDTECH 10-13-2009 11:53:26 204.54.154.68 20907 Report to Moderator Re: 8310 manifold in reply to peanut80, 10-12-2009 18:08:51   We used the R523525 bolts and R73783 spacers that are shown on the 8020 series parts manual   [Reply]  [Send Email] JDTECH 10-13-2009 13:00:31 204.54.154.68 20909 Report to Moderator Re: 8310 manifold in reply to JDTECH, 10-13-2009 11:53:26   Torque them at 35 ft/lbs.   [Reply]  [No Email] peanut80 10-13-2009 17:38:52 199.64.0.252 20910 Report to Moderator Re: 8310 manifold in reply to JDTECH, 10-13-2009 13:00:31   Actually that is the bolts that they sent but did not include the spacers. They were too long and we needed to get the tractor back in the field so we got the studs from a local auto parts store. Thanks for the help. Hopefully we have it fixed this time.   [Reply]  [No Email] [Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply] Hop to: Another Forum Tractor Talk Tool Talk Restoration Tips Paint & Bodywork Implement Alley Tractor Transporting Allis Chalmers Case Combines Crawlers Farmall & IH Ford Ford 9N,2N & 8N Fordson John Deere MH & MF Harry Ferguson Minneapolis Moline Oliver & Cockshutt Garden Tractors Orphans Stationary Engines Today's Tractors Memorabilia Tractor Tales Using Your Tractor Tractor Pulling Site Comments Test Forum Buyer Seller Feedback Kountry Life Classic Trucks