Labor Day Putting down your wrenches or time for
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| | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | I have a 1942 Chevy truck with a 235 engine in it, on may way to store it for the winter a loud rumble and vibration started to happen. I put in the clutch and shut it down right away. Check the driveshaft and u-joints all was ok. Put in the clutch and restarted the engine and the rumbling and vibration came back. I pulled the plugs and found all pistons moving up and down normal. Went under and pulled the flywheel cover and found if I turn the engine over by hand with the flywheel it moves about 1/2" before the harmonic balancer starts to move. Any ideas of what could be wrong???????? Would like to talk to someone over the phone if possible but will take any suggestions you may have. Thanks!!!!!!!!Send me your number 1-262-392-2989 or [email protected] Marv. | | | | | Joined: Feb 2004 Posts: 29,740 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,740 | Check your IM inbox.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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| | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | Your phone number does not go though. | | | | | Joined: May 2010 Posts: 42 'Bolter | | 'Bolter Joined: May 2010 Posts: 42 | From what you've described, it sounds like possibly a broken crankshaft to me.
Daryl
| | | | | Joined: Nov 2010 Posts: 430 'Bolter | | 'Bolter Joined: Nov 2010 Posts: 430 | Sounds like a broken crank.... | | | | | Joined: Mar 2013 Posts: 186 'Bolter | | 'Bolter Joined: Mar 2013 Posts: 186 | Move flywheel rapidly back and forth within the half inch it takes the balancer.what you want to listen for is the clunk and to determine location of it, yes you may have a broken crank, but you may also have a loose flywheel.if it is possible to look up between oil pan and flywheel you may be able to see the end of crank when you move flywheel back and forth and see if moves at all.if not drop oil pan.then you will see what is going on for sure. | | | | | Joined: Aug 2011 Posts: 687 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 687 | I was going to say, why not just drop the pan? I see that's already been suggested.. | | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | Will see how things go this week I may be able to get another look at it and decide for sure what to do. Thanks to all so far trying to help!!!!!!! Will keep you posted.
Marv. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | I think the balancer is loose & wallered out on the crank.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | Removed the oil pan and found the crank broken, now what??????????? Do I find a crank,find a later model engine or rebuild the one I have and see if any one has up dated a 1942 235 engine to a high pressure system and how it could be done. If I can rebuild the old engine to a high pressure and the cost not to much I would like to go that way. Thanks to all for trying to help!!!!!!!
Marv. | | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | I don't know how much it would cost to machine the thrust journals in the block, but I do know crower cams (the crankshaft division) drilled my 216 crank for full pressure oiling for $180, the shipping however was just almost as much. So if you use a splash oiler crank, you won't have to get new rods, or do the machine work on the thrust journals. It is all up to you, there are several ways to go about this. You can make a full flow oil filter, full pressure oiling, or both. Once you decide how you want to proceed, then we can give you proper direction. As there are a few things that will hang you up with each of the paths you may follow. | | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | Why are there two different threads on this?
Last edited by Roy Rodgers; 11/04/2013 1:21 PM.
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Roy, cause someone has not alerted the Moderator to bring them together.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
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| | | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | One was move from another forum.
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