Valves hit pistons,help me figure out why.
Originally Posted by SPRAYED 01
Okay here is a thought. The crane springs are specifically designed for an ls1. So would it be safe to assume that they are meant to be used at stock ls1 height?
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Okay just heard back from the machine shop. At an installed height of 1.78 i had between 115-120 of spring pressure. This was the height i had it at. Is a difference in spring pressure okay?
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Valve springs return the valve to the closed position when not being opened by the cam. If the springs where the issue your valves would lag in the open position and static compression wouldnt occur during start up. The culprit is do to cam timing.
Cam sprocket, timing chain or crank sprocket. Check the alignment. You should have degreed the cam. As well as check TDC of the piston to valve clearance.
Get out of this valve spring idea. Also you can check valve seal with a air cukc and custom made sprak plug to air chuck to pressurize the head.
Cam sprocket, timing chain or crank sprocket. Check the alignment. You should have degreed the cam. As well as check TDC of the piston to valve clearance.
Get out of this valve spring idea. Also you can check valve seal with a air cukc and custom made sprak plug to air chuck to pressurize the head.
formerly silverbrick (changed 02/17/2013)
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From: Pasadena, Tx
Originally Posted by neoakira3
Valve springs return the valve to the closed position when not being opened by the cam. If the springs where the issue your valves would lag in the open position and static compression wouldnt occur during start up. The culprit is do to cam timing.
Cam sprocket, timing chain or crank sprocket. Check the alignment. You should have degreed the cam. As well as check TDC of the piston to valve clearance.
Get out of this valve spring idea. Also you can check valve seal with a air cukc and custom made sprak plug to air chuck to pressurize the head.
Cam sprocket, timing chain or crank sprocket. Check the alignment. You should have degreed the cam. As well as check TDC of the piston to valve clearance.
Get out of this valve spring idea. Also you can check valve seal with a air cukc and custom made sprak plug to air chuck to pressurize the head.
