1.7 Rebuild First Start Up Advice, 1.7 Start Up on stand |
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1.7 Rebuild First Start Up Advice, 1.7 Start Up on stand |
Robroe |
Jul 4 2024, 05:15 PM
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#1
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Member Group: Members Posts: 76 Joined: 10-August 21 From: Wenatchee, WA Member No.: 25,793 Region Association: Pacific Northwest |
Have 73 1.7 bought in pieces. Engine has been rebuilt and ‘souped up’ however I don’t know what internals were installed. New crank, cam, pistons, rods and heads. but I don’t know which ones. Weber 44 idf carbs. Never had oil in it and been stored unstarted for 10 yrs in climate control. I’ve added oil by slow dripping 2 quarts through the oil pressure sensor hole. Oil dripped out of the rockers so I’m pretty sure it got some oil as pre lube. It’s on a home built test stand with the transmission mounted with the starter.
I’m trying to turn the engine over by hand with the plugs out. Have squirted oil in each plug hole. I’m able to turn the engine by hand about 45 degrees and it gets harder to spin so can’t go any further. Would it be a good idea to pull the rocker arms to see if the builder installed some wild cam without checking valve/piston clearance? It doesn’t feel like internals are hitting each other but who knows? Would hate to pull the heads if I don’t have to. Any thoughts before I break something? Rob Roe Newbie |
emerygt350 |
Jul 5 2024, 05:01 AM
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#2
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Advanced Member Group: Members Posts: 2,403 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
You could remove the rockers and give it a go, if it turns freely you know that either your hitting or you have some crazy powerful springs ...
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Robroe |
Jul 6 2024, 12:02 AM
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#3
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Member Group: Members Posts: 76 Joined: 10-August 21 From: Wenatchee, WA Member No.: 25,793 Region Association: Pacific Northwest |
You could remove the rockers and give it a go, if it turns freely you know that either your hitting or you have some crazy powerful springs ... Removed the rockers and push rods. Could turn the engine by hand by gripping the fan. I’m considering cranking the starter with the rockers and push rods removed to see if it builds enough oil pressure to turn off the oil warning light. If I get that far, then was considering reinstalling the push rods and rockers and adjust the valve clearance very loose and try to turn it over again by hand. With luck, there will be no valve/piston interference and I can turn the crank by hand. Not sure what valve springs I have. They are doubles but that’s all I know. I assume the springs can be heavy enough to make it harder to turn by hand. But sounds like it should be turntable by hand unless there is clearance issue. Going very slow and cautious. Thanks for your thoughts. Please keep your suggestions coming! I might just get an endoscope camera to look inside. I can see numbers on the pistons through the spark plug holes but can’t read the numbers. |
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