Any idea what would cause the Valley Plate to have a bu

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Re: Any idea what would cause the Valley Plate to have a bu [Re: Dduster] #1646838 07/16/14 06:59 PM 07/16/14 06:59 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Quote: Quote: Absolutely not. Causes. Plugged breather valve Excessive ring blowby. Blown head gasket passing gasses into crankcase. Cracked piston. Only X amount of ways to pressurize the crankcase. What do you think would be the leakdown values for a cylinder with excessive blow-by to create crankcase pressure? 100% perfect, what is the leakdown magnitude (%) for 'not good'? I've gotten different answers for this question before so i'm just trying to see where the average 'no good' value falls? Any engine will create positive crankcase pressure. Unless its got a vac system. But if your looking for leak down No good value numbers, your right that can vary. For a race engine over 10% no good, some will say over 5% no good. "No good meaning, your not getting the Most from your Motor" Anything over 20% can indicate more then Just rings. As in burnt valves ,head gasket, piston issues etc. 30% 50% no question. "No good meaning, something may be broke Alice" Last edited by Sport440; 07/16/14 07:00 PM.

Entire Thread
Subject	Posted By	Posted
Any idea what would cause the Valley Plate to have a bu	Bratt Racing	07/15/14 04:01 PM
Re: Any idea what would cause the Valley Plate to have a bu	MR_P_BODY	07/15/14 04:24 PM
Re: Any idea what would cause the Valley Plate to have a bu	Al_Alguire	07/15/14 04:59 PM
Re: Any idea what would cause the Valley Plate to have a bu	CompWedgeEngines	07/15/14 05:27 PM
Re: Any idea what would cause the Valley Plate to have a bu	Sport440	07/15/14 06:26 PM
Re: Any idea what would cause the Valley Plate to have a bu	CompWedgeEngines	07/15/14 07:00 PM
Re: Any idea what would cause the Valley Plate to have a bu	Bratt Racing	07/16/14 01:59 AM
Re: Any idea what would cause the Valley Plate to have a bu	Sport440	07/16/14 02:16 AM
Re: Any idea what would cause the Valley Plate to have a bu	Dduster	07/16/14 10:03 PM
Re: Any idea what would cause the Valley Plate to have a bu	Sport440	07/16/14 10:59 PM
Re: Any idea what would cause the Valley Plate to have a bu	sr4440	07/17/14 01:30 AM
Re: Any idea what would cause the Valley Plate to have a bu	69dart	07/17/14 02:04 AM
Re: Any idea what would cause the Valley Plate to have a bu	Bratt Racing	07/16/14 02:22 AM
Re: Any idea what would cause the Valley Plate to have a bu	a493demon	07/16/14 02:37 AM
Re: Any idea what would cause the Valley Plate to have a bu	MR_P_BODY	07/16/14 02:58 AM
Re: Any idea what would cause the Valley Plate to have a bu	RapidusMaximus	07/16/14 03:41 AM
Re: Any idea what would cause the Valley Plate to have a bu	Sport440	07/16/14 03:57 AM
Re: Any idea what would cause the Valley Plate to have a bu	RapidusMaximus	07/16/14 10:50 AM
Re: Any idea what would cause the Valley Plate to have a bu	sr4440	07/17/14 01:13 AM
Re: Any idea what would cause the Valley Plate to have a bu	Bratt Racing	07/16/14 01:57 AM
Re: Any idea what would cause the Valley Plate to have a bu	Sport440	07/15/14 05:06 PM

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