AeroNautical Posted December 19, 2014 Share Posted December 19, 2014 Months ago I did something stupid and hydrolocked my engine. Rymanrph was there to record it all, he could tell the story better than I could. I knew once we got it running again on the trail that I was on borrowed time with the ol 4.0. Well, the time has come. I'm burning a quart of oil every few hundred miles, don't need to do a compression test to know the cylinder walls are scored to hell from the muddy water that filled em. I'm on the look out for a functional, preferably Renix 4.0. Junkyard would be a last resort, because I know many of you probably have a couple collecting dust. I'm posting this in the Pub because I'm not quite ready to jump on a purchase yet, but I suppose it's more to share your stories about required engine swaps. And to tell me the MJ "ain't a gosh dang submarine". Link to comment Share on other sites More sharing options...
Incommando Posted December 19, 2014 Share Posted December 19, 2014 The air inlet on the XJ/MJ is poorly located. You are far from the first to hydrolock one. Link to comment Share on other sites More sharing options...
mikejenn2 Posted December 19, 2014 Share Posted December 19, 2014 I don't have a 4.0 but I do have a 4.2 collecting dust, trying to decide if I want to use it for stroker parts or get new parts and get rid of the motor Link to comment Share on other sites More sharing options...
AeroNautical Posted December 20, 2014 Author Share Posted December 20, 2014 Yeah, i'd heard the air box placement was bad, it's one of the first things in the engine bay to submerge. Is the 4.2 the same as a 4.0, just a larger displacement? Link to comment Share on other sites More sharing options...
Minuit Posted December 20, 2014 Share Posted December 20, 2014 The 4.2 is what came before the 4.0 and is carbed in stock form. Its crankshaft is the starting point for a stroker. Link to comment Share on other sites More sharing options...
cruiser54 Posted December 20, 2014 Share Posted December 20, 2014 The 4.2 is what came before the 4.0 and is carbed in stock form. Its crankshaft is the starting point for a stroker. Crankshaft and rods. Link to comment Share on other sites More sharing options...
cruiser54 Posted December 20, 2014 Share Posted December 20, 2014 Too bad you're so far away. http://prescott.craigslist.org/pts/4792392872.html Link to comment Share on other sites More sharing options...
mikejenn2 Posted December 20, 2014 Share Posted December 20, 2014 if I understand what I have read, all I have to do is replace crank and rods. no other mods needed correct? Link to comment Share on other sites More sharing options...
cruiser54 Posted December 20, 2014 Share Posted December 20, 2014 Kinda sorta. search "junkyard stroker" Link to comment Share on other sites More sharing options...
Lowly Posted December 20, 2014 Share Posted December 20, 2014 Sorry to hear that. Back this summer I did the same thing with my 4 banger. I flushed it out only to have it throw a rod about 1000 miles later. Once you submerge them they really are never the same. Just completed my engine swap with another 4 banger back in Oct. its running well again. I hope you find something that works well for you! Link to comment Share on other sites More sharing options...
AeroNautical Posted December 24, 2014 Author Share Posted December 24, 2014 Yep, just did her final oil change with a heavy additive that's supposed to improve compression by rehydrating the piston rings or something. Hopefully I'll burn a little less oil with it until I get my next powerplant. Link to comment Share on other sites More sharing options...
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