Put it all together
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More Turbo
Joined: Jun 2020
Posts: 554
Likes: 13
Put it all together
Well I have the engine and heads back from the machine shop, everything installed in the block, however I have an issue. I don’t know where tdc is at. I still have the heads off, all I have is the pistons and crank and rods assembled. I also have the lower timing gear on. I have the timing straight up to start.
now I don’t know if I have it at tdc on compression or on exhaust stroke. I don’t want to put the chain and cam gear on with the engine on the wrong stroke. Please help!
now I don’t know if I have it at tdc on compression or on exhaust stroke. I don’t want to put the chain and cam gear on with the engine on the wrong stroke. Please help!
Fleet Mechanic
Joined: Dec 2016
Posts: 1,255
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The compression stroke is determined by the phase of the cam. Until the chain is installed there really is only 1 tdc for the piston. It is neither compression or exhaust until the cam is linked via the chain. Gears should be positioned so that marks line up. Crank mark @ 12:00 and cam mark @ 6:00
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More Turbo
Joined: Jun 2020
Posts: 554
Likes: 13
Okay so I have the crank gear at 12 O’clock and the cam gear at 6 o’clock, with the chain on.
so thag should get me at the correct position to assemble the rest right? It’s my first time rebuilding a full size engine, learning a lot.
so thag should get me at the correct position to assemble the rest right? It’s my first time rebuilding a full size engine, learning a lot.
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