Motor is tight when turning by hand |
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Motor is tight when turning by hand |
swood |
Nov 6 2004, 10:14 PM
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#1
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Senior Member Group: Members Posts: 1,839 Joined: 6-February 03 From: Strong Beach Member No.: 251 Region Association: None |
Ok, I've finally cut the p-rods and am loading them in and adjusting the valves. Right now it's on TDC for #1. I notice that when I turn the flywheel, at some point in the rotation there is a little tightness for a few degrees, maybe a 1/4 turn or so. My jugs were opened to 96mm with new KB's and hastings rings. Could this be just the rings on one of the pistons when down low in the cylinder? I don't know how free a new motor is to turn. The crank turned smooth as silk before connecting the rods, p&c's etc.
My hands hurt from the teeth on the flywheel so any thoughts would be great. |
newdeal2 |
Nov 7 2004, 10:35 PM
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#2
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Unregistered |
I don't think this is anything serious [imho]. I had a change once the pistons were loaded and the heads/rockers assembled but only at certain points which leads me to beleive it is just the riesistance of the pistons. I also notice a "puffing" sound with this and I am pretty sure it's the pistons forcing air.
Jake's video only says the engine should turn easily prior to installing the pistons. This is to be sure the bearings are set correctly. Any resistance and it's time to go back in and check. I know this because it happened to me. I almost killed one of the bearings! Perhaps you should crank the engine with the coil wire removed and check your compression before you do the start up. I plan on attaching a pressure gauge in the engine bay on start up day. |
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