Removing crankshaft 85
Pro
Joined: May 2001
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From: New Jersey
Safety Car
Joined: Nov 2008
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From: Seattle Washington
Sure, it probably could be done. But what are we trying to do ? New bearings can be rolled in with out removing it. If the Crank needs to be ground then the rest of the Engine probably needs to be gone threw anyway.
Pro
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From: Liliha Bakery stuffing my face with coco puffs!
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Melting Slicks
Joined: May 2014
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From: New Port Richey FL
I have changed a crank while in a C-4 L-98(on a lift), to do it trans is out, front of motor off timing chain removed. After that it's nuts and bolts to remove the crankshaft.
So now the down side of doing it This way.
One, crankshafts are heavy and odd shaped hard to get a controlled grip on.
Next with said above you don't want to bang/mark it up trying to get it into the Journals and this is also is a possible hand cutter (8 stitches) from block.
you're next question is can you get the piston in from bottom I'm going with a No SBCs don't have flat piston liners like in Detroit Diesels where it can be done.
So in hindsight would I do it again No not my first choice, with all you need to remove your just a couple of bolts from out, and working in proper light with nothing in your way and don't have a Harry Potter Lighting Bolt scar on your hands and fingers
So now the down side of doing it This way.
One, crankshafts are heavy and odd shaped hard to get a controlled grip on.
Next with said above you don't want to bang/mark it up trying to get it into the Journals and this is also is a possible hand cutter (8 stitches) from block.
you're next question is can you get the piston in from bottom I'm going with a No SBCs don't have flat piston liners like in Detroit Diesels where it can be done.
So in hindsight would I do it again No not my first choice, with all you need to remove your just a couple of bolts from out, and working in proper light with nothing in your way and don't have a Harry Potter Lighting Bolt scar on your hands and fingers
Last edited by s carter; Jul 23, 2023 at 12:42 PM.
Race Director
Joined: Apr 2003
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From: moraga ca
If the tranny is out and the timing cover is off, you are very close to having the motor out, a couple of hours at the most. Do it right and put the motor on a stand. Having oil dripping all over your face and eyes is not fun. The more corners you try to cut the worse the outcome will be.
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Trannys not coming off. Im putting a new timing set on it. Oil pans been off for 2 weeks. Its dry inside. Its on custom wood ramps where the bottom of the block is 2 ft up from the ground. Using a floor jack to lift and hold one side while i get the main caps started on the other side and work my way down. Some of that foam shipping stuff wrapped around it on the jack to keep it protected.
Last edited by sturmmorser2000; Jul 23, 2023 at 01:15 PM.
Melting Slicks
Joined: May 2014
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From: New Port Richey FL
Even with the torque converter slide back I don't think you're going to have enough room to dip the tail end to slide out without hitting TC nor will there be enough to slide it straight down before the front hits the K member and get hung on TC
If you can pull it off great
If you can pull it off great
Race Director
Joined: Apr 2003
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From: moraga ca
How are you going to get the flywheel bolts or flex plate bolts without removing the tranny? If manual, the import shaft snout goes into the pilot bushing in the crankshaft. If auto, the torque converter seats inside the flex plate recess. Good luck.
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Instructor
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Looks like ill have to invest in one of these
450 lb. Low Lift Transmission Jack (harborfreight.com)
450 lb. Low Lift Transmission Jack (harborfreight.com)