[VB] Help! Locked Up Engine that Ran 2 Weeks Ago - Puzzler

[cdreike]

How did the stud jam things up? What was hitting the stud?Happy you figured it outChris64DD Kamper Kit71 Sunroof Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Tom Tarka <tommy at slackers.net> Date: 7/25/21  1:52 AM  (GMT-08:00) To: cdreike <cdreike at gmail.com> Cc: VintageBus at type2.com Subject: Re: [VB] Help! Locked Up Engine that Ran 2 Weeks Ago - Puzzler I figured it out!A couple of the case studs for the head had pulled out when I pulled the head.I installed them too deep when I put them back in….Thank you all so much for the ideas and support!      -Tom—“You can lead a horse to water, but you can’t cure stupid.” -T. Tarka> On Jul 25, 2021, at 12:29 AM, cdreike <cdreike at gmail.com> wrote:> > > Is there a gap between the case and the base of the 4 barrel?> If the ring came out of the barrel, the barrel should slide forward as you rotate the crank in either direction. > > Can you post a link to the samba forum post?> Did you post any photos of what you are seeing?> > Chris> > > > Sent from my Verizon, Samsung Galaxy smartphone> > > -------- Original message --------> From: Avocado Tom Tarka <avocadotom at gmail.com>> Date: 7/24/21 7:17 PM (GMT-08:00)> To: cdreike <cdreike at gmail.com>> Cc: VintageBus at type2.com> Subject: Re: [VB] Help! Locked Up Engine that Ran 2 Weeks Ago - Puzzler> > The cylinder head for cylinders one and two (right side of the engine, RIR) as opposed to the one on the other side (cylinders number 3 and 4).> >>> On Jul 24, 2021, at 10:08 PM, cdreike <cdreike at gmail.com> wrote:>>> >> >> What is a 1/2 head?>> >> Chris>> >> >> >> Sent from my Verizon, Samsung Galaxy smartphone>> >> >> -------- Original message -------->> From: Avocado Tom Tarka <avocadotom at gmail.com>>> Date: 7/24/21 5:43 PM (GMT-08:00)>> To: "<vintagebus at type2.com>" <vintagebus at type2.com>>> Subject: Re: [VB] Help! Locked Up Engine that Ran 2 Weeks Ago - Puzzler>> >> Following up...>> >> I looked at in a little more detail and it's binding between TDC and ~12>> ATDC, which would seem to point to something binding as the piston is>> coming back into the cylinder.  And the cylinder seems to be on there>> pretty well (no wiggle when I attempt to move it by hand).>> >> --->>   "We are MoTown.  We are professionals.  We're here to get the job done.">> >> >> On Sat, Jul 24, 2021 at 2:58 AM Avocado Tom Tarka <avocadotom at gmail.com>>> wrote:>> >> > Greetings Volks!>> >>> > I just found myself in a bit of a bind, where my engine which ran when I>> > pulled it two weeks ago will no longer turn over.>> >>> > I'll run through the whole saga for completeness but the basics are that I>> > pulled the engine to replace the transmission and ended up pulling the 3/4>> > head as well because the #4 spark plug broke off in the head.  I just>> > torqued the 1/2 head (I usually torque the heads when the engine's out if I>> > can), and when I went to set the valves: no go.  The engine doesn't turn>> > over by hand (with or without the rocker arm on).  The 3/4 head is still>> > off, as my plan was to put it on tomorrow.  Help?>> >>> >     - Tom>> > (full disclosure: I'm cross-posting this to thesamba because I'm a little>> > freaked about needing to get this engine back up and running)>> >>> > Full Story is as Follows:>> >>> > Background:>> > Bus is 1967 with stock transmission.  Engine is 1600 SP I rebuilt ~35,000>> > miles ago.>> >>> > My plan was to pull and replace the transmission on my 1967 bus.  I>> > figured I'd do a compression check before I pulled the engine, just to see>> > if I should be tackling anything else while the engine was out.  I recalled>> > that the compression on #4 might be low, but my notebook is currently MIA.>> >>> > Compression was good on cylinders 1-3 (115, 112.5, 115).  When removing>> > spark plug #4 to check the compression: it broke off.  Doh!>> >>> > [u]The Saga[/u]>> > 1. Pull engine.  Pull 3/4 head.  Remove broken spark plug base with>> > extractor.  Take head to the machine shop to check threads and valve guides.>> >>> > 2. Clean outside of engine and check endplay.  It's at 0.009" (no surprise>> > there, I knew it was off).>> >>> > 3. Attempt to remove gland nut: no go without the engine being in a more>> > stable place (instead of on blocks).  Decide to wait until the engine is>> > back to a longblock, then deal with it.>> >>> > 4. Clean off built up carbon from the top of the #3 piston.  Can't recall>> > if I did the #4 piston or not.  Currently, the #3 piston is close to TDC>> > with #4 all of the way in. (This seems like it could be important or could>> > be a red herring...unclear, but I thought I'd call it out.)>> >>> > 5. Pull the rocker arm from the 1/2 head and torque the head nuts, first>> > to ~7 foot-pounds using the initial sequence, then to 22.5 ft-lbs using the>> > second sequence.  None of the upper nuts move in either tightening>> > sequence.  The lower nuts, particularly the middle two, do tighten during>> > the second sequence.>> >>> > 6. Reinstall push rods and rocker arm after cleaning. Remove flywheel>> > lock.  Attempt to turn the engine over by hand from the pulley: engine>> > doesn't move more than 1/2 inch.>> >>> > 7. Remove rocker arm and push rods (in case I screwed something up) and>> > attempt to turn over engine.  Still no dice.>> >>> > I'm at a loss.  If I had adjusted the end play, I could see the engine>> > being locked up (I've had that happen before).  I can't imagine that>> > torquing the heads would have any impact though.>> >>> > My best guess is that the base of the #4 jug moved a little forward or>> > that somehow one of the rings on the #4 piston got caught on the edge of>> > the jug somehow.  It seems really unlikely that that might be the case, but>> > I just can't think of anything else?>> >>> > Any ideas?  Engine has oil in it, and like I said: it ran fine when I>> > pulled it, has decent compression (for a 7:1 ratio), etc.>> >>> > Thanks!>> >   Tom>> > --->> >   "We are MoTown.  We are professionals.  We're here to get the job done.">> >>> _______________________________________________>> vintagebus mailing list>> vintagebus at type2.com>> https://www.type2.com/lists/vintagebus_______________________________________________vintagebus/listinfo mailing listvintagebus at type2.comhttp://type2.com/cgi-bin/mailman/listinfo/vintagebus