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top end oiling

Engine, Fuel and Exhaust

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Old Jul 20th, 2013, 12:20 AM     #1
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top end oiling

I am having a problem with not getting enough oil to the rocker shafts. I have new oil pump and lifters and push tubes are open but it is so dry the top of valve is even wearing. I installed a new set of Comp. 850-1 and thought I had my problem fixed. I am going to try a Baisley spring but I was sure my pressure was ok before. Any suggestions? I also checked the breather hose for being open.
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Old Jul 20th, 2013, 10:50 AM     #2
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Re: top end oiling

Quote: Originally Posted by corrigon View Post
but I was sure my pressure was ok before.
I would start by measuring the oil pressure using a mechanical pressure gauge @ idle and higher RPM,, hot & cold.
It may be low.
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Old Jul 20th, 2013, 11:05 AM     #3
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Re: top end oiling

Quote: Originally Posted by Hoople View Post
I would start by measuring the oil pressure using a mechanical pressure gauge @ idle and higher RPM,, hot & cold.
It may be low.
Hoople has you started in right direction. Once you know that you have the oil pressure you need, then you can start looking at where the obstructions might be.
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Old Jul 20th, 2013, 01:30 PM     #4
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Re: top end oiling

I also believe there are tappet oil screens (taper cone) on your year engine.
May want to check them.
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Old Jul 20th, 2013, 01:51 PM     #5
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Re: top end oiling

Quote: Originally Posted by Hoople View Post
I also believe there are tappet oil screens (taper cone) on your year engine.
May want to check them.
If this is an EVO the tappet screen Hoople mentioned gets oil first before the tappet blocks do Check for trash in the screen, oil should rise out of the cavity if you have pressure that far, do this with the engine off
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Old Jul 20th, 2013, 01:52 PM     #6
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Re: top end oiling

Something like what is in this attachment. Someone like Jack would know for sure.
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File Type: rtf Tappet screen.rtf (3.21 MB, 23 views)
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Old Jul 21st, 2013, 12:13 AM     #7
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Re: top end oiling

I will install the new spring and then use a known good gauge to check pressure. Thanks people, hope this does it. Also I neglected to identify my motor, which is a 1999 twin cam. Sorry about that.
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Old Jul 21st, 2013, 04:58 PM     #8
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Re: top end oiling

Quote: Originally Posted by corrigon View Post
I will install the new spring and then use a known good gauge to check pressure. Thanks people, hope this does it. Also I neglected to identify my motor, which is a 1999 twin cam. Sorry about that.
curious have had a cam chain tensioner failure in the past? just wondering if a small piece of the tensioner made its way into your cam plate
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Old Jul 21st, 2013, 05:23 PM     #9
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Re: top end oiling

Quote: Originally Posted by HOLY DIVER View Post
curious have had a cam chain tensioner failure in the past? just wondering if a small piece of the tensioner made its way into your cam plate
Or maybe some damage to the oil pump? I really think that a master gauge needs to be used to determine the actual oil pressure. Even if there has not been any cam chain tensioner failure it does not mean that some material has not dislodged and caused damage or clogged something up.
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Old Jul 21st, 2013, 05:29 PM     #10
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Re: top end oiling

Quote: Originally Posted by HDDon View Post
Or maybe some damage to the oil pump? I really think that a master gauge needs to be used to determine the actual oil pressure. Even if there has not been any cam chain tensioner failure it does not mean that some material has not dislodged and caused damage or clogged something up.
i agree with the above^^^^^^
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