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I will guess you have the valves adjusted wrong. (bent valves)
Pistons in wrong. (again bent valves now.)
Pull the heads and see if it will tun over by hand .
Remove heads. Use washers etc (clear of bore) to hold barrels down and turn it over. Do pistons stick up past bore? As Scott above said , if pistons are in wrong spot then clearances for valves will be wrong too. Go backwards check everything again. If you have your old parts measure them and compare.
hey Hotrod i put the Andrews EV27 cam in, and guessing the old one was OEM (there is not 1 marking on it except an "N" on last lobe) but no differance AT ALL with the EV27. looks brand new too.
And King the pistons werent making it to the top, must have been hitting piston skirts on the cranks balancers, heavy round part (cant remember the name) I know the Cometic head gaskets are a certain thickness .030 i think and i didnt want to put torquqe on it with washers on to measure them, when the pistons were hitting on the bottom end. I ended up putting the old Jugs/pistons in they were in pretty good shape, still cross pattern of hone in the cyl's. they will be fine for a year or more. It runs perfect, good compression with the old ones and must have been rebuilt not that long ago. so i gave up on the 10:1 ones i bought. was just wondering if they are good for another motor or i can use them down the road. would hate to junk good ones with new parts i put into them.
Ya King, pistons were in right valves adjusted good. i had pics and double checked everything. there was reasons i needed to pull the engine, The clutch hub key broke metal in the primary oil a whole -nother long thread hahah
Last edited by Tat2carson; Oct 20, 2018 at 01:38 PM.
Okay just so you know the Pistons need to be installed properly. If you look in this picture...
Notice the valve reliefs, their situated to accommodate intake and exhaust valve which would indicate front cylinder or rear cylinder placement... Now if you look at the next picture
you will see that there are no reliefs in the skirts. It is impossible for the skirts to hit the wheels with this configuration....
You will also notice in the first picture where the Dome has a straight edge on the left side, that is because the cylinder head combustion chamber is designed in the shape of a D, with this configuration the Piston dome can fit up into the cylinder head to raise the compression.
So either one of two things happened here. The Piston dome shelf (straight edge) was on the right side allowing the Piston to make contact with the cylinder head... Or the front Piston was in the rear cylinder and the rear in the front which at this point would not give the proper clearance for the valves to the valve reliefs in the Piston. Notice the difference size reliefs? And one more thing changing from the stock N grind cam to an EV27 would not cause any clearance issues.. It's a bolt in cam...
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