Twincam no oil to top end / rockers.
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Joined: May 2010
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From: Riverside Ca
Twincam no oil to top end / rockers.
So I replaced the Cam plate and oil pump in my Deuce with the SE cam plate and oil pump. Its a 95ci, had new springs installed to account for higher lift cams so I had the heads off.
She will fire up and run but I noticed a lot of noise in the rocker boxes. double checked my push rod adjustment (SE adjustable) and still a lot of noise. Replaced the lifters with some stockers out of my 10 street glide I had replaced with low miles. Still no luck.
Decided to see if I was getting oil in the rocker boxes and when I removed them I noticed no oil in them.
I installed a oil pressure gauge and it reads 40 psi at idle. Checked oil return and I am seeing Oil return to the tank. I removed the push rods again and looked at the lifters. There was oil in the galley and there was a good amount of oil on top of them and around them when I pulled them out. I removed the Cam cover and from what I have read a expected amount drained out.
So now I dont know what to check for next. Any suggestions would be appreciated.
She will fire up and run but I noticed a lot of noise in the rocker boxes. double checked my push rod adjustment (SE adjustable) and still a lot of noise. Replaced the lifters with some stockers out of my 10 street glide I had replaced with low miles. Still no luck.
Decided to see if I was getting oil in the rocker boxes and when I removed them I noticed no oil in them.
I installed a oil pressure gauge and it reads 40 psi at idle. Checked oil return and I am seeing Oil return to the tank. I removed the push rods again and looked at the lifters. There was oil in the galley and there was a good amount of oil on top of them and around them when I pulled them out. I removed the Cam cover and from what I have read a expected amount drained out.
So now I dont know what to check for next. Any suggestions would be appreciated.
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From: Riverside Ca
No suggestions so far so I have done some research. I took the push rods out and they are clear and nothing blocking the passages.
Possible suspects so far.
1. Oil Filter. Some have seen a bad oil filter cause this. Does the oil leaving from the oil filter return to the cam plate or does it go to the straight to the lifters?
2. Pressure relief valve. The valve could be stuck open part ways. Would i have over 40 PSI if the valve is stuck open?
3. Oil pump. Would I see good flow back to the oil tank and good pressure if the oil pump was not working correctly?
Possible suspects so far.
1. Oil Filter. Some have seen a bad oil filter cause this. Does the oil leaving from the oil filter return to the cam plate or does it go to the straight to the lifters?
2. Pressure relief valve. The valve could be stuck open part ways. Would i have over 40 PSI if the valve is stuck open?
3. Oil pump. Would I see good flow back to the oil tank and good pressure if the oil pump was not working correctly?
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Joined: May 2010
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From: Riverside Ca
I believe I did. I installed the pump to the case and bolted the cam plate to the pump finger tight, rotated the motor, tightened, rotated the motor some more, and tightened.
Followed the directions here and from other forums.
http://www.jpcycles.com/instructions/pdf/433-803.pdf
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From: san antonio
Originally Posted by f4dennis
1. Oil Filter. Some have seen a bad oil filter cause this. Does the oil leaving from the oil filter return to the cam plate or does it go to the straight to the lifters?
Originally Posted by f4dennis
2. Pressure relief valve. The valve could be stuck open part ways. Would i have over 40 PSI if the valve is stuck open?
Originally Posted by f4dennis
3. Oil pump. Would I see good flow back to the oil tank and good pressure if the oil pump was not working correctly?
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From: Riverside Ca
Thanks djl
Looks like it could be a pain to remove the valve. Assuming best bet is to remove the plate from the bike to inspect or remove?
Looks like it could be a pain to remove the valve. Assuming best bet is to remove the plate from the bike to inspect or remove?
Oil flows from the filter back to the cam plate.
The pressure relief valve should open when pressure reaches 35psi. The valve could be sticking and requiring more pressure to open and it could be opening partially. From what I have read, it is not unusual for those valves to stick in the upgrade kits and it is good practice to remove and "polish" the valve before installing the cam plate. I would be looking at the PRV as the offender.
No
The pressure relief valve should open when pressure reaches 35psi. The valve could be sticking and requiring more pressure to open and it could be opening partially. From what I have read, it is not unusual for those valves to stick in the upgrade kits and it is good practice to remove and "polish" the valve before installing the cam plate. I would be looking at the PRV as the offender.
No
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From: N Texas
I had an aftermarket oil pressure relief valve stick open after my engine build, but you should not be getting a 40 psi reading, more like zero.
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From: san antonio
Once out, use some steel wool or 1500 grit emery cloth to smooth the plunger until it drops in and out of the bore from it's own weight.
Personally, once out, I would replace the plunger with the Axtell bypass. It's a bit pricey but does what it is intened to do and will never stick. JMHO, your call.
http://www.axtellsales.com/Bypass-System/
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Joined: Jun 2006
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From: san antonio
Still have no explanation for why the OP is not seeing oil up top but I am thinking he just hasn't run the motor long enough. With pressure registering 40psi, he should see oil up top but it does take a while. The oil up top will dribble out, it will not squirt out like one sees on a small block Chevy rocker.
Last edited by djl; May 15, 2014 at 12:06 PM.
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From: Riverside Ca
If the valve is open, oil pressure should read +/-35psi; the valve is designed to open at 35psi and excess oil bypasses and flows back to the feed side of the pump. However, if the valve is stuck closed, there is no way for the excess oil flow to bypass and return to the feed side of the pump. Remember that the OP has installed the SE plate with the high capacity pump so the pressure reading could show 40psi if the valve is stuck closed.
So, million dollar question
.. would this prevent oil from getting to the top end?I would think a stuck valve that is closed and 40+ psi should be pumping oil into the lifters and up the push rods into the rockers with out problems.
I appreciate the responses guys. Been racking my head over this.