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| Rotating effort? https://slantsix.org/forum/viewtopic.php?t=67968 |
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| Author: | Rick Covalt [ Wed Oct 30, 2024 9:05 am ] |
| Post subject: | Rotating effort? |
Have any of you guys that are assembling your own engines ever checked the force needed to rotate the crankshaft with the bearings installed? I remember my only"professionally" built engine and how little effort it took to spin it. So I decided to check mine. I am rebuilding my back up engine and just installed the crank and main bearings. Once moving it takes only 11-15 inch pounds to spin the crank. Not very much. Will do the same once I get the pistons and rod bearings installed. Just one more reference point. |
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| Author: | slantzilla [ Wed Oct 30, 2024 9:59 am ] |
| Post subject: | Re: Rotating effort? |
Just the crank there should not be much of any drag on a straight main bore block. The rings will be what add the most drag. Until the valvetrain is installed. |
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| Author: | Rick Covalt [ Wed Oct 30, 2024 11:26 am ] |
| Post subject: | Re: Rotating effort? |
Yeah, I figured I'd just start keeping track a little and see what everything does when it is installed. |
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| Author: | Dart270 [ Wed Oct 30, 2024 12:04 pm ] |
| Post subject: | Re: Rotating effort? |
I remember with my K1/Wiseco setup for the 64 Dart motor it took about 6-8 ft-lbs to rotate it, before breakin and with no head, cam, chain... Your crank number sounds good. Lou |
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