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brandon350
12-20-2004, 06:51 PM
I have a qestion reguarding the quads piston rings, I have a 93 HO and last year I replaced the timing chain guides bearings and when installing a piston I bent a ring so I went out and purchased a set of speed pro rings, When I put the motor back together the motor seemed loose to me, I never really built a quad before I checked all of my tolerances and they were good, the motor was so loose that i can turn the crank by hand when the head was off by just grabbing the snout of the crank. Anyways I put the motor back together, it runs fine but smokes increadibly bad when it first starts and when I rev it, I did a compression test and I had around 160 psi as an average. I tore it down again this weekend and there is oil on top of the pistons, either I am leaking down my valve guides which I doubt or the oil rings arent sealing and I am getting blow by. My question is does the quad have a tapered oil ring and I installed it upside down, like i said my ring gaps are correct and everything it to spec, the car even ran fine except for the smoke. Also does this sound right that the motor is that free, is this motor that well balanced? when the head is on and spark plugs are in the motor still turns over easy I need to put a wrench on the crank bolt but I can turn it over with little effort, but I had 160 psi doesnt make sense to me? can anyone help me please?

ligardo420
01-27-2005, 09:09 PM
I know that the rings have a special mark on them to tell you wich way is up. I know that you can have oil come up but not have air go down therefor resulting in oil on the piston but good compression. The rings are eather upside down or they didnt seat right. Thats whati think.